man page updates for tip

60 files changed, 16445 insertions, 232 deletions

diff --git a/man/tip/index.html b/man/tip/index.html
index 83262e62..afa001b9 100644
--- a/man/tip/index.html
+++ b/man/tip/index.html
@@ -440,6 +440,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <li><a href="#_section_3_library_functions">Section 3: Library Functions</a></li>
 <li><a href="#_section_3compat_compatible_library_functions">Section 3compat: Compatible Library Functions</a></li>
 <li><a href="#_section_3http_supplemental_http_functions">Section 3http: Supplemental HTTP Functions</a></li>
+<li><a href="#_section_3supp_supplemental_functions">Section 3supp: Supplemental Functions</a></li>
 <li><a href="#_section_3tls_supplemental_tls_functions">Section 3tls: Supplemental TLS Functions</a></li>
 <li><a href="#_section_5_macros_and_types">Section 5: Macros and Types</a></li>
 <li><a href="#_section_7_protocols_and_transports">Section 7: Protocols and Transports</a></li>
@@ -573,6 +574,30 @@ callable by applications.</p>
 <td class="tableblock halign-left valign-top"><p class="tableblock">close socket</p></td>
 </tr>
 <tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_close.3.html">nng_ctx_close(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">close context</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_getopt.3.html">nng_ctx_getopt(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">get context option</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_open.3.html">nng_ctx_open(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">create context</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_recv.3.html">nng_ctx_recv(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">receive message using context asynchronously</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_send.3.html">nng_ctx_send(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">send message using context asynchronously</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_setopt.3.html">nng_ctx_setopt(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">set context option</p></td>
+</tr>
+<tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_device.3.html">nng_device(3)</a></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">send message</p></td>
 </tr>
@@ -789,10 +814,18 @@ callable by applications.</p>
 <td class="tableblock halign-left valign-top"><p class="tableblock">sleep asynchronously</p></td>
 </tr>
 <tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_strdup.3.html">nng_strdup(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">duplicate string</p></td>
+</tr>
+<tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_strerror.3.html">nng_strerror(3)</a></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">return an error description</p></td>
 </tr>
 <tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_strfree.3.html">nng_strfree(3)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">free memory</p></td>
+</tr>
+<tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_sub_open.3.html">nng_sub_open(3)</a></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">create sub socket</p></td>
 </tr>
@@ -1114,6 +1147,88 @@ that are available.</p>
 </div>
 </div>
 <div class="sect1">
+<h2 id="_section_3supp_supplemental_functions">Section 3supp: Supplemental Functions</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This section documents supplemental functions that are available.
+These functions are not intrinsic to building applications with
+this library, but their presence may facilitate writing portable applications.</p>
+</div>
+<table class="tableblock frame-all grid-all spread">
+<colgroup>
+<col style="width: 37.5%;">
+<col style="width: 62.5%;">
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_clock.3supp.html">nng_clock(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">get time</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">allocate condition variable</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_free.3supp.html">nng_cv_free(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">free condition variable</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_until.3supp.html">nng_cv_until(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wait for condition or timeout</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_wait.3supp.html">nng_cv_wait(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wait for condition</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_wake.3supp.html">nng_cv_wake(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wake all waiters</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_wake1.3supp.html">nng_cv_wake1(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wake one waiter</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_msleep.3supp.html">nng_msleep(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">sleep milliseconds</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">allocate mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_free.3supp.html">nng_mtx_free(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">free mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_lock.3supp.html">nng_mtx_lock(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">lock mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">lock mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_opts_parse.3supp.html">nng_opts_parse(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">parse command line options</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_random.3supp.html">nng_random(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">get random number</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_thread_create.3supp.html">nng_thread_create(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">create thread</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_thread_destroy.3supp.html">nng_thread_destroy(3supp)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">reap thread</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+</div>
+<div class="sect1">
 <h2 id="_section_3tls_supplemental_tls_functions">Section 3tls: Supplemental TLS Functions</h2>
 <div class="sectionbody">
 <div class="paragraph">
@@ -1178,6 +1293,10 @@ that are available.</p>
 <td class="tableblock halign-left valign-top"><p class="tableblock">asynchronous I/O handle</p></td>
 </tr>
 <tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx.5.html">nng_ctx(5)</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">protocol context</p></td>
+</tr>
+<tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_dialer.5.html">nng_dialer(5)</a></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">dialer</p></td>
 </tr>
diff --git a/man/tip/libnng.3.html b/man/tip/libnng.3.html
index 645e7d70..3758d308 100644
--- a/man/tip/libnng.3.html
+++ b/man/tip/libnng.3.html
@@ -517,7 +517,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <li><a href="#_asynchronous_operations">Asynchronous Operations</a></li>
 <li><a href="#_protocols">Protocols</a></li>
 <li><a href="#_transports">Transports</a></li>
+<li><a href="#_protocol_contexts">Protocol Contexts</a></li>
 <li><a href="#_url_object">URL Object</a></li>
+<li><a href="#_supplemental_api">Supplemental API</a></li>
 <li><a href="#_http_support">HTTP Support</a></li>
 <li><a href="#_tls_configuration_objects">TLS Configuration Objects</a></li>
 </ul>
@@ -569,10 +571,18 @@ intended to solve common communication problems in distributed applications.</p>
 <td class="tableblock halign-left valign-top"><p class="tableblock">free memory</p></td>
 </tr>
 <tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_strdup.3.html">nng_strdup()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">duplicate string</p></td>
+</tr>
+<tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_strerror.3.html">nng_strerror()</a></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">return an error description</p></td>
 </tr>
 <tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_strfree.3.html">nng_strfree()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">free string</p></td>
+</tr>
+<tr>
 <td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_version.3.html">nng_version()</a></p></td>
 <td class="tableblock halign-left valign-top"><p class="tableblock">report library version</p></td>
 </tr>
@@ -1050,6 +1060,47 @@ Only a single asynchronous operation may be associated with an
 </table>
 </div>
 <div class="sect2">
+<h3 id="_protocol_contexts">Protocol Contexts</h3>
+<div class="paragraph">
+<p>The following functions are useful to separate the protocol processing
+from a socket object, into a separate context.
+This can allow multiple contexts to be created on a single socket for
+concurrent applications.</p>
+</div>
+<table class="tableblock frame-all grid-all spread">
+<colgroup>
+<col style="width: 50%;">
+<col style="width: 50%;">
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_close.3.html">nng_ctx_close()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">close context</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_getopt.3.html">nng_ctx_getopt()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">get context option</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_open.3.html">nng_ctx_open()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">create context</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_recv.3.html">nng_ctx_recv()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">receive message using context asynchronously</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_send.3.html">nng_ctx_send()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">send message using context asynchronously</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_ctx_setopt.3.html">nng_ctx_setopt()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">set context option</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+<div class="sect2">
 <h3 id="_url_object">URL Object</h3>
 <div class="paragraph">
 <p>Common functionality is supplied for parsing and handling
@@ -1077,6 +1128,86 @@ universal resource locators (URLS).</p>
 </table>
 </div>
 <div class="sect2">
+<h3 id="_supplemental_api">Supplemental API</h3>
+<div class="paragraph">
+<p>These supplemental functions are not intrinsic to building
+network applications with <em>NNG</em>, but they are made available
+as a convenience to aid in creating portable applications.</p>
+</div>
+<table class="tableblock frame-all grid-all spread">
+<colgroup>
+<col style="width: 50%;">
+<col style="width: 50%;">
+</colgroup>
+<tbody>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_clock.3supp.html">nng_clock()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">get time</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_alloc.3supp.html">nng_cv_alloc()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">allocate condition variable</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_free.3supp.html">nng_cv_free()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">free condition variable</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_until.3supp.html">nng_cv_until()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wait for condition or timeout</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_wait.3supp.html">nng_cv_wait()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wait for condition</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_wake.3supp.html">nng_cv_wake()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wake all waiters</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_cv_wake1.3supp.html">nng_cv_wake()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">wake one waiter</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_msleep.3supp.html">nng_msleep()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">sleep for milliseconds</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">allocate mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_free.3supp.html">nng_mtx_free()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">free mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_lock.3supp.html">nng_mtx_lock()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">lock mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">unlock mutex</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_opts_parse.3supp.html">nng_opts_parse()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">parse command line options</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_random.3supp.html">nng_random()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">get random number</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_thread_create.3supp.html">nng_thread_create()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">create thread</p></td>
+</tr>
+<tr>
+<td class="tableblock halign-left valign-top"><p class="tableblock"><a href="nng_thread_destroy.3supp.html">nng_thread_destroy()</a></p></td>
+<td class="tableblock halign-left valign-top"><p class="tableblock">reap thread</p></td>
+</tr>
+</tbody>
+</table>
+</div>
+<div class="sect2">
 <h3 id="_http_support">HTTP Support</h3>
 <div class="paragraph">
 <p>The library may be configured with support for HTTP, and this will
diff --git a/man/tip/nng.7.html b/man/tip/nng.7.html
index f412f39f..c3685bac 100644
--- a/man/tip/nng.7.html
+++ b/man/tip/nng.7.html
@@ -646,53 +646,94 @@ other languages please check the <a href="http://nanomsg.org/">website</a>.</p>
 <h2 id="_conceptual_overview">Conceptual Overview</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p><em>nng</em> presents a <em>socket</em> view of networking.  The sockets are constructed
-using protocol-specific functions, as a given socket implements precisely
-one <em>nng</em> protocol.</p>
+<p><em>nng</em> presents a <em>socket</em> view of networking.
+The sockets are constructed using protocol-specific functions, as a given
+socket implements precisely one <em>nng</em> protocol.</p>
 </div>
 <div class="paragraph">
 <p>Each socket can be used to send and receive messages (if the protocol)
-supports it, and implements the appropriate protocol semantics.  For
-example, <a href="nng_sub.7.html">nng_sub(7)</a> sockets automatically filter incoming
+supports it, and implements the appropriate protocol semantics.
+For example, <a href="nng_sub.7.html"><em>sub</em></a> sockets automatically filter incoming
 messages to discard those for topics that have not been subscribed.</p>
 </div>
 <div class="paragraph">
 <p><em>nng</em> sockets are message oriented, so that messages are either delivered
-wholly, or not at all.  Partial delivery is not possible.  Furthermore,
-<em>nng</em> does not provide any other delivery or ordering guarantees;
-messages may be dropped or reordered.  (Some protocols, such as
-<a href="nng_req.7.html">nng_req(7)</a> may offer stronger guarantees by
-performing their own retry and validation schemes.)</p>
+wholly, or not at all.  Partial delivery is not possible.
+Furthermore, <em>nng</em> does not provide any other delivery or ordering guarantees;
+messages may be dropped or reordered
+(Some protocols, such as <a href="nng_req.7.html"><em>req</em></a> may offer stronger
+guarantees by performing their own retry and validation schemes.)</p>
 </div>
 <div class="paragraph">
 <p>Each socket can have zero, one, or many "endpoints", which are either
-<em>listeners</em> or <em>dialers</em>. (A given socket may freely choose whether it uses
-listeners, dialers, or both.)  These "endpoints" provide access to
-underlying transports, such as TCP, etc.</p>
+<em>listeners</em> or <em>dialers</em>.
+(A given socket may freely choose whether it uses listeners, dialers, or both.)
+These "endpoints" provide access to underlying transports, such as TCP, etc.</p>
 </div>
 <div class="paragraph">
-<p>Each endpoint is associated with a URL, which is a service address.  For
-dialers, this will be the service address that will be contacted, whereas
-for listeners this is where the listener will bind and watch for new
-connections.</p>
+<p>Each endpoint is associated with a URL, which is a service address.
+For dialers, this will be the service address that will be contacted, whereas
+for listeners this is where the listener will accept new connections.</p>
 </div>
 <div class="paragraph">
-<p>Endpoints do not themselves transport data.  They are instead responsible
-for the creation of <em>pipes</em>, which can be thought of as message-oriented,
-connected, streams.  Pipes frequently correspond to a single underlying
-byte stream&#8201;&#8212;&#8201;for example both IPC and TCP transports implement their
-pipes using a 1:1 relationship with a connected socket.</p>
+<p>Endpoints do not themselves transport data.
+They are instead responsible for the creation of <em>pipes</em>, which can be
+thought of as message-oriented connected streams.
+Pipes frequently correspond to a single underlying byte stream.
+For example both IPC and TCP transports implement their
+pipes using a 1:1 relationship with a connected operating system socket.</p>
 </div>
 <div class="paragraph">
-<p>Endpoints create pipes as needed.  Listeners will create them when a new
-client connection request arrives, and dialers will generally create one,
-then wait for it to disconnect before reconnecting.</p>
+<p>Endpoints create pipes as needed.
+Listeners will create them when a new client connection request arrives,
+and dialers will generally create one, then wait for it to disconnect before
+reconnecting.</p>
 </div>
 <div class="paragraph">
 <p>Most applications should not have to worry about endpoints or pipes at
 all; the socket abstraction should provide all the functionality needed
 other than in a few specific circumstances.</p>
 </div>
+<div class="paragraph">
+<p><a id="raw_mode"></a>
+=== Raw Mode</p>
+</div>
+<div class="paragraph">
+<p>
+Most applications will use <em>nng</em> sockets in &#8220;cooked&#8221; mode.
+This mode provides the full semantics of the protocol.
+For example, <a href="nng_req.7.html"><em>req</em></a> sockets will automatically
+match a reply to a request, and resend requests periodically if no reply
+was received.</p>
+</div>
+<div class="paragraph">
+<p>There are situations, such as with <a href="nng_device.7.html">proxies</a>,
+where it is desirable to bypass these semantics and simply pass messages
+to and from the socket with no extra semantic handling.
+This is possible using &#8220;raw&#8221; mode sockets.</p>
+</div>
+<div class="paragraph">
+<p>Raw mode sockets are generally constructed with a different function,
+such as <a href="nng_req_open.3.html"><code>nng_req0_open_raw()</code></a>.
+Using these sockets, the application can simply send and receive messages,
+and is responsible for supplying any additional socket semantics.
+Typically this means that the application will need to inspect message
+headers on incoming messages, and supply them on outgoing messages.</p>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+The <a href="nng_device.3.html"><code>nng_device()</code></a> function only works with raw mode
+sockets, but as it only forwards the messages, no additional application
+processing is needed.
+</td>
+</tr>
+</table>
+</div>
 <div class="sect2">
 <h3 id="_urls">URLs</h3>
 <div class="paragraph">
@@ -745,6 +786,23 @@ slash (<code>/</code>) separators are removed from the path.</p>
 them is believed to improve both the usability and security of <em>nng</em>
 applications, without violating RFC 3986 itself.</p>
 </div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+Port numbers may be service names in some instances, but it is recommended
+that numeric port numbers be used when known.
+If service names are used, it is recommended that they follow the naming
+conventions for C identifiers, and not be longer than 32 characters in length.
+This will maximize compatibility across systems and minimize opportunities for
+confusion when they are parsed on different systems.
+</td>
+</tr>
+</table>
+</div>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_aio_stop.3.html b/man/tip/nng_aio_stop.3.html
index bed7b404..126f1ce3 100644
--- a/man/tip/nng_aio_stop.3.html
+++ b/man/tip/nng_aio_stop.3.html
@@ -541,9 +541,28 @@ associated with <em>aio</em> by aborting with <code>NNG_ECANCELED</code>, and th
 for it to complete or to be completely aborted.</p>
 </div>
 <div class="paragraph">
-<p>This is logically the equivalent of <a href="nng_aio_cancel.3.html"><code>nng_aio_cancel()</code></a>
-followed by <a href="nng_aio_wait.3.html"><code>nng_aio_wait()</code></a>, except that the asynchronous
-I/O handle may not be used for any further operations.</p>
+<p>If an operation is in progress when this function is called, that operation
+is canceled and the callback function is <em>not</em> allowed to run.</p>
+</div>
+<div class="paragraph">
+<p>If the callback function is already running when this function is called,
+then it is allowed to complete before returning to the caller.</p>
+</div>
+<div class="paragraph">
+<p>No new operations will be started on this <em>aio</em>.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Calling this function means that the operation may be aborted without
+completing its callback function.
+</td>
+</tr>
+</table>
 </div>
 <div class="admonitionblock tip">
 <table>
diff --git a/man/tip/nng_alloc.3.html b/man/tip/nng_alloc.3.html
index d73217df..5f8e7a7e 100644
--- a/man/tip/nng_alloc.3.html
+++ b/man/tip/nng_alloc.3.html
@@ -546,11 +546,11 @@ case it can be directly passed to <a href="nng_send.3.html"><code>nng_send()</co
 the flag <code>NNG_FLAG_ALLOC</code>.  Alternatively, it can be freed when no
 longer needed using <a href="nng_free.3.html"><code>nng_free()</code></a>.</p>
 </div>
-<div class="admonitionblock warning">
+<div class="admonitionblock important">
 <table>
 <tr>
 <td class="icon">
-<i class="fa icon-warning" title="Warning"></i>
+<i class="fa icon-important" title="Important"></i>
 </td>
 <td class="content">
 Do not use the system <code>free()</code> function to release this memory.
@@ -566,20 +566,17 @@ to a crash or other undesirable and unpredictable behavior.
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>This function returns a pointer to the allocated memory on success,
+and <code>NULL</code> otherwise.</p>
 </div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_errors">ERRORS</h2>
 <div class="sectionbody">
-<div class="dlist">
-<dl>
-<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
-<dd>
-<p>Insufficient free memory exists.</p>
-</dd>
-</dl>
+<div class="paragraph">
+<p>No errors are returned, but a <code>NULL</code> return value should be
+treated the same as <code>NNG_ENOMEM</code>.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_bus.7.html b/man/tip/nng_bus.7.html
index 54adf490..4c4342d3 100644
--- a/man/tip/nng_bus.7.html
+++ b/man/tip/nng_bus.7.html
@@ -530,9 +530,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/bus0/bus.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_bus0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/bus0/bus.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -590,7 +588,7 @@ the more likely that message loss is to occur.
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <a href="nng_bus_open.3.html"><code>nng_bus0_open()</code></a> call creates a bus socket.
+<p>The <a href="nng_bus_open.3.html"><code>nng_bus0_open()</code></a> functions create a bus socket.
 This socket may be used to send and receive messages.
 Sending messages will attempt to deliver to each directly connected peer.</p>
 </div>
diff --git a/man/tip/nng_bus_open.3.html b/man/tip/nng_bus_open.3.html
index 09b02fe8..e8aee826 100644
--- a/man/tip/nng_bus_open.3.html
+++ b/man/tip/nng_bus_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/bus0/bus.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_bus0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_bus0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_bus0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -540,13 +542,18 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <p>The <code>nng_bus0_open()</code> function creates a <a href="nng_bus.7.html"><em>bus</em></a> version 0
 <a href="nng_socket.5.html">socket</a> and returns it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_bus0_open_raw()</code> function creates a <a href="nng_bus.7.html"><em>bus</em></a> version 0
+<a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode, and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_clock.3supp.html b/man/tip/nng_clock.3supp.html
new file mode 100644
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@@ -0,0 +1,608 @@
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_clock(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_clock - get time</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-k">typedef</span> <span class="tok-kt">uint64_t</span> <span class="tok-n">nng_time</span><span class="tok-p">;</span>
+
+<span class="tok-n">nng_time</span> <span class="tok-nf">nng_clock</span><span class="tok-p">(</span><span class="tok-kt">void</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_clock()</code> returns the number of elapsed milliseconds since some
+arbitrary time in the past.
+The resolution of the clock depends on the underlying timing facilities
+of the system.
+This function may be used for timing, but applications should not expect
+very fine grained values.</p>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+The reference time will be the same for a given program,
+but different programs may have different references.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+This function is intended mostly to help with setting appropriate
+timeouts using <a href="nng_cv_until.3supp.html">nng_cv_until(3supp)</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Milliseconds since reference time.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_sleep_aio.3.html">nng_sleep_aio(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_cv_until.3supp.html">nng_cv_until(3supp)</a>,
+<a href="nng_msleep.3supp.html">nng_msleep(3supp)</a>,
+<a href="nng_duration.5.html">nng_duration(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_ctx.5.html b/man/tip/nng_ctx.5.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_ctx(5) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_example">EXAMPLE</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_ctx - protocol context</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-k">typedef</span> <span class="tok-kt">uint32_t</span> <span class="tok-n">nng_ctx</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>An <code>nng_ctx</code> is a handle to an underlying &#8220;context&#8221; object,
+which keeps the protocol state for some stateful protocols.
+The purpose of a separate context object is to permit applications to
+share a single socket, with its various underlying
+<a href="nng_dialer.5.html">dialers</a>,
+<a href="nng_listener.5.html">listeners</a>,
+and <a href="nng_pipe.5.html">pipes</a>,
+while still benefiting from separate state tracking.</p>
+</div>
+<div class="paragraph">
+<p>For example, a <a href="nng_req.7.html"><em>req</em></a> context will contain the request ID
+of any sent request, a timer to retry the request on failure, and so forth.
+A separate context on the same socket can have similar data, but corresponding
+to a completely different request.</p>
+</div>
+<div class="paragraph">
+<p>All contexts share the same socket, and so some options, as well as the
+underlying transport details, will be common to all contexts on that socket.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Not every protocol supports separate contexts.
+See the protocol-specific documentation for further details about whether
+contexts are supported, and details about what options are supported for
+contexts.
+</td>
+</tr>
+</table>
+</div>
+<div class="paragraph">
+<p>Protocols that make use of contexts will also have a &#8220;default&#8221; context
+that is used when the socket global operations are used.
+Operations using the global context will generally not interfere with
+any other contexts, except that certain socket options may affect socket
+global behavior.</p>
+</div>
+<div class="paragraph">
+<p>
+Historically, applications wanting to use a stateful protocol concurrently
+would have to resort to <a href="nng.7.html#raw_mode">raw mode</a> sockets, which bypasses
+much of the various protocol handling, leaving it to up to the application
+to do so.
+Contexts make it possible to still benefit from advanced protocol handling,
+including timeouts, retries, and matching requests to responses, while doing so
+concurrently.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+<a href="nng.7.html#raw_mode">Raw mode</a> sockets do not support contexts, since
+there is generally no state tracked for them, and thus contexts make no sense.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+Contexts are an excellent mechanism to use when building concurrent
+applications, and should be used in lieu of
+<a href="nng.7.html#raw_mode">raw mode</a> sockets when possible.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock warning">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-warning" title="Warning"></i>
+</td>
+<td class="content">
+Use of file descriptor polling (with descriptors
+obtained using the
+<a href="nng_options.5.html#NNG_OPT_RECVFD"><code>NNG_OPT_RECVFD</code></a> or
+<a href="nng_options.5.html#NNG_OPT_SENDFD"><code>NNG_OPT_SENDFD</code></a> options) while contexts
+are in use on the same socket is not supported, and may lead to unpredictable
+behavior.
+These asynchronous methods should not be mixed on the same socket.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_example">EXAMPLE</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The following program fragment demonstrates the use of contexts to implement
+a concurrent <a href="nng_rep.7.html"><em>rep</em></a> service that simply echos messages back
+to the sender.</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span>
+<span class="tok-k">struct</span> <span class="tok-n">echo_context</span> <span class="tok-p">{</span>
+    <span class="tok-n">nng_ctx</span> <span class="tok-o">*</span><span class="tok-n">ctx</span><span class="tok-p">;</span>
+    <span class="tok-n">nng_aio</span> <span class="tok-o">*</span><span class="tok-n">aio</span><span class="tok-p">;</span>
+    <span class="tok-k">enum</span> <span class="tok-p">{</span> <span class="tok-n">INIT</span><span class="tok-p">,</span> <span class="tok-n">RECV</span><span class="tok-p">,</span> <span class="tok-n">SEND</span> <span class="tok-p">}</span> <span class="tok-n">state</span><span class="tok-p">;</span>
+<span class="tok-p">};</span>
+
+<span class="tok-kt">void</span>
+<span class="tok-nf">echo</span><span class="tok-p">(</span><span class="tok-kt">void</span> <span class="tok-o">*</span><span class="tok-n">arg</span><span class="tok-p">)</span>
+<span class="tok-p">{</span>
+    <span class="tok-k">struct</span> <span class="tok-n">echo_context</span> <span class="tok-o">*</span><span class="tok-n">ec</span> <span class="tok-o">=</span> <span class="tok-n">arg</span><span class="tok-p">;</span>
+
+    <span class="tok-k">switch</span> <span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">state</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+    <span class="tok-k">case</span> <span class="tok-nl">INIT</span><span class="tok-p">:</span>
+        <span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">state</span> <span class="tok-o">=</span> <span class="tok-n">RECV</span><span class="tok-p">;</span>
+        <span class="tok-n">nng_ctx_recv</span><span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">aio</span><span class="tok-p">);</span>
+        <span class="tok-k">return</span><span class="tok-p">;</span>
+    <span class="tok-k">case</span> <span class="tok-nl">RECV</span><span class="tok-p">:</span>
+        <span class="tok-k">if</span> <span class="tok-p">(</span><span class="tok-n">nng_aio_result</span><span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">aio</span><span class="tok-p">)</span> <span class="tok-o">!=</span> <span class="tok-mi">0</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+            <span class="tok-c1">// ... handle error</span>
+        <span class="tok-p">}</span>
+        <span class="tok-c1">// We reuse the message on the ec-&gt;aio</span>
+        <span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">state</span> <span class="tok-o">=</span> <span class="tok-n">SEND</span><span class="tok-p">;</span>
+        <span class="tok-n">nng_ctx_send</span><span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">aio</span><span class="tok-p">);</span>
+        <span class="tok-k">return</span><span class="tok-p">;</span>
+    <span class="tok-k">case</span> <span class="tok-nl">SEND</span><span class="tok-p">:</span>
+        <span class="tok-k">if</span> <span class="tok-p">(</span><span class="tok-n">nng_aio_result</span><span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">aio</span><span class="tok-p">)</span> <span class="tok-o">!=</span> <span class="tok-mi">0</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+            <span class="tok-c1">// ... handle error</span>
+        <span class="tok-p">}</span>
+        <span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">state</span> <span class="tok-o">=</span> <span class="tok-n">RECV</span><span class="tok-p">;</span>
+        <span class="tok-n">nng_ctx_recv</span><span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-n">ec</span><span class="tok-o">-&gt;</span><span class="tok-n">aio</span><span class="tok-p">);</span>
+        <span class="tok-k">return</span><span class="tok-p">;</span>
+    <span class="tok-p">}</span>
+<span class="tok-p">}</span></code></pre>
+</div>
+</div>
+<div class="paragraph">
+<p>Given the above fragment, the following example shows setting up the
+service.  It assumes that the <a href="nng_socket.7.html">socket</a> has already been
+created and any transports set up as well with functions such as
+<a href="nng_dial.3.html"><code>nng_dial()</code></a>
+or <a href="nng_listen.3.html"><code>nng_listen()</code></a>.</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#define CONCURRENCY 1024</span>
+
+<span class="tok-n">echo_context</span> <span class="tok-n">ecs</span><span class="tok-p">[</span><span class="tok-n">CONCURRENCY</span><span class="tok-p">];</span>
+
+<span class="tok-kt">void</span>
+<span class="tok-nf">start_echo_service</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-n">rep_socket</span><span class="tok-p">)</span>
+<span class="tok-p">{</span>
+    <span class="tok-k">for</span> <span class="tok-p">(</span><span class="tok-kt">int</span> <span class="tok-n">i</span> <span class="tok-o">=</span> <span class="tok-mi">0</span><span class="tok-p">;</span> <span class="tok-n">i</span> <span class="tok-o">&lt;</span> <span class="tok-n">CONCURRENCY</span><span class="tok-p">;</span> <span class="tok-n">i</span><span class="tok-o">++</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+        <span class="tok-c1">// error checks elided for clarity</span>
+        <span class="tok-n">nng_ctx_open</span><span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-p">[</span><span class="tok-n">i</span><span class="tok-p">].</span><span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-n">rep_socket</span><span class="tok-p">)</span>
+        <span class="tok-n">nng_aio_alloc</span><span class="tok-p">(</span><span class="tok-n">ec</span><span class="tok-p">[</span><span class="tok-n">i</span><span class="tok-p">].</span><span class="tok-n">aio</span><span class="tok-p">,</span> <span class="tok-n">echo</span><span class="tok-p">,</span> <span class="tok-o">&amp;</span><span class="tok-n">e</span><span class="tok-p">[</span><span class="tok-n">i</span><span class="tok-p">]);</span>
+        <span class="tok-n">ec</span><span class="tok-p">[</span><span class="tok-n">i</span><span class="tok-p">].</span><span class="tok-n">state</span> <span class="tok-o">=</span> <span class="tok-n">INIT</span><span class="tok-p">;</span>
+        <span class="tok-n">echo</span><span class="tok-p">(</span><span class="tok-o">&amp;</span><span class="tok-n">ec</span><span class="tok-p">[</span><span class="tok-n">i</span><span class="tok-p">]);</span> <span class="tok-c1">// start it running</span>
+    <span class="tok-p">}</span>
+<span class="tok-p">}</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="libnng.3.html">libnng(3)</a>,
+<a href="nng_ctx_close.3.html">nng_ctx_close(3)</a>,
+<a href="nng_ctx_open.3.html">nng_ctx_open(3)</a>,
+<a href="nng_ctx_getopt.3.html">nng_ctx_getopt(3)</a>,
+<a href="nng_ctx_recv.3.html">nng_ctx_recv(3)</a>,
+<a href="nng_ctx_send.3.html">nng_ctx_send(3)</a>,
+<a href="nng_ctx_setopt.3.html">nng_ctx_setopt(3)</a>,
+<a href="nng_dialer.5.html">nng_dialer(5)</a>,
+<a href="nng_listener.5.html">nng_listener(5)</a>,
+<a href="nng_socket.5.html">nng_socket(5)</a>,
+<a href="nng_options.5.html">nng_options(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_ctx_close.3.html b/man/tip/nng_ctx_close.3.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_ctx_close(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_ctx_close - close context</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_close</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_ctx_close()</code> function closes the context <em>ctx</em>.
+Messages that have been submitted for sending may be flushed or delivered,
+depending upon the transport and the setting of the
+<a href="nng_options.5.html#NNG_OPT_LINGER"><code>NNG_OPT_LINGER</code></a> option.</p>
+</div>
+<div class="paragraph">
+<p>Further attempts to use the context after this call returns will result
+in <code>NNG_ECLOSED</code>.
+Threads waiting for operations on the context when this
+call is executed may also return with an <code>NNG_ECLOSED</code> result.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Closing the socket associated with <em>ctx</em>
+(using <a href="nng_close.3.html"><code>nng_close()</code></a>) also closes this context.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This function returns 0 on success, and non-zero otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
+<dd>
+<p>The context <em>ctx</em> is already closed or was never opened.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_ctx_open.3.html">nng_ctx_open(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_ctx.5.html">nng_ctx(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_ctx_getopt.3.html b/man/tip/nng_ctx_getopt.3.html
new file mode 100644
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_ctx_getopt(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a>
+<ul class="sectlevel2">
+<li><a href="#_forms">Forms</a></li>
+</ul>
+</li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_ctx_getopt - get context option</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_getopt</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">void</span> <span class="tok-o">*</span><span class="tok-n">val</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">valszp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_getopt_bool</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">bool</span> <span class="tok-o">*</span><span class="tok-n">bvalp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_getopt_int</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">int</span> <span class="tok-o">*</span><span class="tok-n">ivalp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_getopt_ms</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-n">nng_duration</span> <span class="tok-o">*</span><span class="tok-n">durp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_getopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">zp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_getopt_string</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">char</span> <span class="tok-o">**</span><span class="tok-n">strp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_getopt_uint64</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">uint64_t</span> <span class="tok-o">*</span><span class="tok-n">u64p</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>
+The <code>nng_ctx_getopt()</code> functions are used to retrieve option values for
+the <a href="nng_ctx.5.html">context</a> <em>ctx</em>.
+The actual options that may be retrieved in this way vary.
+A number of them are documented in <a href="nng_options.5.html">nng_options(5)</a>.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Context options are protocol specific.
+The details will be documented with the protocol.
+</td>
+</tr>
+</table>
+</div>
+<div class="sect2">
+<h3 id="_forms">Forms</h3>
+<div class="paragraph">
+<p>In all of these forms, the option <em>opt</em> is retrieved from the context <em>ctx</em>.
+The forms vary based on the type of the option they take.</p>
+</div>
+<div class="paragraph">
+<p>The details of the type, size, and semantics of the option will depend
+on the actual option, and will be documented with the option itself.</p>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+Generally, it will be easier to use one of the typed forms instead.
+</td>
+</tr>
+</table>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_getopt_code"><code>nng_ctx_getopt()</code></h4>
+<div class="paragraph">
+<p>This function is untyped and can be used to retrieve the value of any option.
+The caller must store a pointer to a buffer to receive the value in <em>val</em>,
+and the size of the buffer shall be stored at the location referenced by
+<em>valszp</em>.</p>
+</div>
+<div class="paragraph">
+<p>When the function returns, the actual size of the data copied (or that
+would have been copied if sufficient space were present) is stored at
+the location referened by <em>valszp</em>.
+If the caller&#8217;s buffer is not large enough to hold the entire object,
+then the copy is truncated.
+Therefore the caller should check for truncation by verifyng that the
+returned size in <em>valszp</em> does not exceed the original buffer size.</p>
+</div>
+<div class="paragraph">
+<p>It is acceptable to pass <code>NULL</code> for <em>val</em> if the value in <em>valszp</em> is zero.
+This can be used to determine the size of the buffer needed to receive
+the object.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_getopt_bool_code"><code>nng_ctx_getopt_bool()</code></h4>
+<div class="paragraph">
+<p>This function is for options which take a boolean (<code>bool</code>).
+The value will be stored at <em>ivalp</em>.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_getopt_int_code"><code>nng_ctx_getopt_int()</code></h4>
+<div class="paragraph">
+<p>This function is for options which take an integer (<code>int</code>).
+The value will be stored at <em>ivalp</em>.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_getopt_ms_code"><code>nng_ctx_getopt_ms()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve time <a href="nng_duration.5.html">durations</a>
+(such as timeouts), stored in <em>durp</em> as a number of milliseconds.
+(The special value <code>NNG_DUR_INFINITE</code> means an infinite amount of time, and
+the special value <code>NNG_DUR_DEFAULT</code> means a context-specific default.)</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_getopt_size_code"><code>nng_ctx_getopt_size()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve a size into the pointer <em>zp</em>,
+typically for buffer sizes, message maximum sizes, and similar options.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_getopt_string_code"><code>nng_ctx_getopt_string()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve a string into <em>strp</em>.
+This string is created from the source using <a href="nng_strdup.3.html"><code>nng_strdup()</code></a>
+and consequently must be freed by the caller using
+<a href="nng_strfree.3.html"><code>nng_strfree()</code></a> when it is no longer needed.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_getopt_uint64_code"><code>nng_ctx_getopt_uint64()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve a 64-bit unsigned value into the value
+referenced by <em>u64p</em>.
+This is typically used for options related to identifiers, network
+numbers, and similar.</p>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>These functions return 0 on success, and non-zero otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_EBADTYPE</code></dt>
+<dd>
+<p>Incorrect type for option.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
+<dd>
+<p>Parameter <em>s</em> does not refer to an open socket.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_EINVAL</code></dt>
+<dd>
+<p>Size of destination <em>val</em> too small for object.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory exists.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
+<dd>
+<p>The option <em>opt</em> is not supported.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_EWRITEONLY</code></dt>
+<dd>
+<p>The option <em>opt</em> is write-only.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_ctx_setopt.3.html">nng_ctx_setopt(3)</a>,
+<a href="nng_strdup.3.html">nng_strdup(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_strfree.3.html">nng_strfree(3)</a>,
+<a href="nng_duration.5.html">nng_duration(5)</a>,
+<a href="nng_ctx.5.html">nng_ctx(5)</a>,
+<a href="nng_options.5.html">nng_options(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_ctx_open.3.html b/man/tip/nng_ctx_open.3.html
new file mode 100644
index 00000000..20b582cd
--- /dev/null
+++ b/man/tip/nng_ctx_open.3.html
@@ -0,0 +1,629 @@
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_ctx_open(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_ctx_open - create context</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_open</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-o">*</span><span class="tok-n">ctxp</span><span class="tok-p">,</span> <span class="tok-n">nng_socket</span> <span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_ctx0_open()</code> function creates a separate context to be used with
+the socket <em>s</em>,
+and returns it at the location pointed by <em>ctxp</em>.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Not every protocol supports creation of separate contexts.
+</td>
+</tr>
+</table>
+</div>
+<div class="paragraph">
+<p>Contexts allow the independent and concurrent use of stateful operations
+using the same socket.
+For example, two different contexts created on a <a href="nng_rep.7.html"><em>rep</em></a>
+socket can each receive requests, and send replies to them, without any
+regard to or interference with each other.</p>
+</div>
+<div class="paragraph">
+<p>
+TIP: Using contexts is an excellent way to write simpler concurrent
+applications, while retaining the benefits of the protocol-specific
+advanced processing, avoiding the need to bypass that with
+<a href="nng.7.html#raw_mode">raw mode</a> sockets.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Use of contexts with <a href="nng.7.html#raw_mode">raw mode</a> sockets is
+nonsensical, and not supported.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This function returns 0 on success, and non-zero otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory is available.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
+<dd>
+<p>The protocol does not support separate contexts, or the socket was opened in raw mode.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_ctx_close.3.html">nng_ctx_close(3)</a>,
+<a href="nng_ctx_getopt.3.html">nng_ctx_getopt(3)</a>,
+<a href="nng_ctx_recv.3.html">nng_ctx_recv(3)</a>,
+<a href="nng_ctx_send.3.html">nng_ctx_send(3)</a>,
+<a href="nng_ctx_setopt.3.html">nng_ctx_setopt(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_ctx.5.html">nng_ctx(5)</a>,
+<a href="nng_socket.5.html">nng_socket(5)</a>,
+<a href="nng_rep.7.html">nng_rep(7)</a>,
+<a href="nng_req.7.html">nng_req(7)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_ctx_recv.3.html b/man/tip/nng_ctx_recv.3.html
new file mode 100644
index 00000000..76ac07a1
--- /dev/null
+++ b/man/tip/nng_ctx_recv.3.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_ctx_recv(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_ctx_recv - receive message using context asynchronously</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_ctx_recv</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-n">nng_aio</span> <span class="tok-o">*</span><span class="tok-n">aio</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_ctx_recv()</code> receives a <a href="nng_msg.5.html">message</a> using the
+<a href="nng_ctx.5.html">context</a> <em>s</em> asynchronously.</p>
+</div>
+<div class="paragraph">
+<p>When a message is successfully received by the context, it is
+stored in the <em>aio</em> by an internal call equivalent to
+<a href="nng_aio_set_msg.3.html"><code>nng_aio_set_msg()</code></a>, then the completion
+callback on the <em>aio</em> is executed.
+In this case, <a href="nng_aio_result.3.html"><code>nng_aio_result()</code></a> will
+return zero.
+The callback function is responsible for retrieving the message
+and disposing of it appropriately.</p>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+Failing to accept and dispose of messages in this
+case can lead to memory leaks.
+</td>
+</tr>
+</table>
+</div>
+<div class="paragraph">
+<p>If for some reason the asynchronous receive cannot be completed
+successfully (including by being canceled or timing out), then
+the callback will still be executed,
+but <a href="nng_aio_result.3.html"><code>nng_aio_result()</code></a> will be non-zero.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+The semantics of what receiving a message means varies from protocol to
+protocol, so examination of the protocol documentation is encouraged.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.  (The operation completes asynchronously.)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ECANCELED</code></dt>
+<dd>
+<p>The operation was aborted.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
+<dd>
+<p>The context <em>ctx</em> is not open.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory is available.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
+<dd>
+<p>The protocol for context <em>ctx</em> does not support receiving.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ESTATE</code></dt>
+<dd>
+<p>The context <em>ctx</em> cannot receive data in this state.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ETIMEDOUT</code></dt>
+<dd>
+<p>The receive timeout expired.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_aio_get_msg.3.html">nng_aio_get_msg(3)</a>,
+<a href="nng_aio_set_msg.3.html">nng_aio_set_msg(3)</a>,
+<a href="nng_msg_alloc.3.html">nng_msg_alloc(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_aio.5.html">nng_aio(5)</a>,
+<a href="nng_ctx.5.html">nng_ctx(5)</a>,
+<a href="nng_msg.5.html">nng_msg(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_ctx_send.3.html b/man/tip/nng_ctx_send.3.html
new file mode 100644
index 00000000..28a1fe76
--- /dev/null
+++ b/man/tip/nng_ctx_send.3.html
@@ -0,0 +1,672 @@
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_ctx_send(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_ctx_send - send message using context asynchronously</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_ctx_send</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-n">nng_aio</span> <span class="tok-o">*</span><span class="tok-n">aio</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_ctx_send()</code> sends a <a href="nng_msg.5.html">message</a> using the
+<a href="nng_ctx.5.html">context</a> <em>ctx</em> asynchronously.</p>
+</div>
+<div class="paragraph">
+<p>The message to send must have previously been set on the <em>aio</em>
+using the <a href="nng_aio_set_msg.3.html"><code>nng_aio_set_msg()</code></a> function.
+The function assumes &#8220;ownership&#8221; of the message.</p>
+</div>
+<div class="paragraph">
+<p>If the message was successfully queued for delivery to the socket,
+then the <em>aio</em> will be completed, and <a href="nng_aio_result.3.html"><code>nng_aio_result()</code></a>
+will return zero.
+In this case the socket will dispose of the message when it is finished with it.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+The operation will be &#8220;completed&#8221;, and the callback associated
+with the <em>aio</em> executed, as soon as the socket accepts the message
+for sending.
+This does <em>not</em> indicate that the message was actually delivered, as it
+may still be buffered in the sending socket, buffered in the receiving
+socket, or in flight over physical media.
+</td>
+</tr>
+</table>
+</div>
+<div class="paragraph">
+<p>If the operation fails for any reason (including cancellation or timeout),
+then the <em>aio</em> callback will be executed and <a href="nng_aio_result.3.html"><code>nng_aio_result()</code></a>
+will return a non-zero error status.
+In this case, the callback has a responsibity to retrieve the message from
+the <em>aio</em> with <a href="nng_aio_get_msg.3.html"><code>nng_aio_get_msg()</code></a> and dispose of
+it appropriately.
+(This may include retrying the send operation on the same or a different
+socket, or deallocating the message with <a href="nng_msg_free.3.html"><code>nng_msg_free()</code></a>.)</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+The semantics of what sending a message means varies from protocol to
+protocol, so examination of the protocol documentation is encouraged.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+Context send operations are asynchronous.
+If a synchronous operation is needed, one can be constructed by using a
+<code>NULL</code> callback on the <em>aio</em> and then waiting for the operation using
+<a href="nng_aio_wait.3.html"><code>nng_aio_wait()</code></a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.  (The operation completes asynchronously.)</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ECANCELED</code></dt>
+<dd>
+<p>The operation was aborted.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
+<dd>
+<p>The context <em>ctx</em> is not open.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_EMSGSIZE</code></dt>
+<dd>
+<p>The message is too large.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory is available.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
+<dd>
+<p>The protocol for context <em>ctx</em> does not support sending.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ESTATE</code></dt>
+<dd>
+<p>The context <em>ctx</em> cannot send data in this state.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ETIMEDOUT</code></dt>
+<dd>
+<p>The send timeout expired.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_aio_get_msg.3.html">nng_aio_get_msg(3)</a>,
+<a href="nng_aio_set_msg.3.html">nng_aio_set_msg(3)</a>,
+<a href="nng_msg_alloc.3.html">nng_msg_alloc(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_aio.5.html">nng_aio(5)</a>,
+<a href="nng_ctx.5.html">nng_ctx(5)</a>,
+<a href="nng_msg.5.html">nng_msg(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_ctx_setopt.3.html b/man/tip/nng_ctx_setopt.3.html
new file mode 100644
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_ctx_setopt(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a>
+<ul class="sectlevel2">
+<li><a href="#_forms">Forms</a></li>
+</ul>
+</li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_ctx_setopt - set context option</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_setopt</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">void</span> <span class="tok-o">*</span><span class="tok-n">val</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-n">valsz</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_setopt_bool</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">int</span> <span class="tok-n">bval</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_setopt_int</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">int</span> <span class="tok-n">ival</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_setopt_ms</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-n">nng_duration</span> <span class="tok-n">dur</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_setopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-n">z</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_setopt_string</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">str</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_ctx_setopt_uint64</span><span class="tok-p">(</span><span class="tok-n">nng_ctx</span> <span class="tok-n">ctx</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">uint64_t</span> <span class="tok-n">u64</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>
+The <code>nng_ctx_setopt()</code> functions are used to configure options for
+the context <em>ctx</em>.
+The actual options that may be configured in this way vary, and are
+specified by <em>opt</em>.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Context options are protocol specific.
+The details will be documented with the protocol.
+</td>
+</tr>
+</table>
+</div>
+<div class="sect2">
+<h3 id="_forms">Forms</h3>
+<div class="paragraph">
+<p>The details of the type, size, and semantics of the option will depend
+on the actual option, and will be documented with the option itself.</p>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+Generally, it will be easier to use one of the typed versions
+of this function.
+</td>
+</tr>
+</table>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_setopt_code"><code>nng_ctx_setopt()</code></h4>
+<div class="paragraph">
+<p>This function is untyped, and can be used to configure any arbitrary data.
+The <em>val</em> pointer addresses the data to copy, and <em>valsz</em> is the
+size of the objected located at <em>val</em>.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_setopt_bool_code"><code>nng_ctx_setopt_bool()</code></h4>
+<div class="paragraph">
+<p>This function is for options which take a boolean (<code>bool</code>).
+The <em>bval</em> is passed to the option.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_setopt_int_code"><code>nng_ctx_setopt_int()</code></h4>
+<div class="paragraph">
+<p>This function is for options which take an integer (<code>int</code>).
+The <em>ival</em> is passed to the option.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_setopt_ms_code"><code>nng_ctx_setopt_ms()</code></h4>
+<div class="paragraph">
+<p>This function is used to configure time durations (such as timeouts) using
+type <a href="nng_duration.5.html"><code>nng_duration</code></a>.
+The duration <em>dur</em> is an integer number of milliseconds.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_setopt_size_code"><code>nng_ctx_setopt_size()</code></h4>
+<div class="paragraph">
+<p>This function is used to configure a size, <em>z</em>, typically for buffer sizes,
+message maximum sizes, and similar options.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_setopt_string_code"><code>nng_ctx_setopt_string()</code></h4>
+<div class="paragraph">
+<p>This function is used to pass configure a string, <em>str</em>.
+Strings passed this way must be legal UTF-8 or ASCII strings, terminated
+with a <code>NUL</code> (<code>\0</code>) byte.
+(Other constraints may apply as well, see the documentation for each option
+for details.)</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_ctx_setopt_uint64_code"><code>nng_ctx_setopt_uint64()</code></h4>
+<div class="paragraph">
+<p>This function is used to configure a 64-bit unsigned value, <em>u64</em>.
+This is typically used for options related to identifiers, network numbers,
+and similar.</p>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>These functions return 0 on success, and non-zero otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
+<dd>
+<p>Parameter <em>s</em> does not refer to an open socket.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_EINVAL</code></dt>
+<dd>
+<p>The value being passed is invalid.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
+<dd>
+<p>The option <em>opt</em> is not supported.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_EREADONLY</code></dt>
+<dd>
+<p>The option <em>opt</em> is read-only.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ESTATE</code></dt>
+<dd>
+<p>The socket is in an inappropriate state for setting this option.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_ctx_getopt.3.html">nng_ctx_getopt(3)</a>,
+<a href="nng_setopt.3.html">nng_setopt(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_ctx.5.html">nng_ctx(5)</a>,
+<a href="nng_options.5.html">nng_options(5)</a>,
+<a href="nng_socket.5.html">nng_socket(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_cv_alloc(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_cv_alloc - allocate condition variable</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-k">typedef</span> <span class="tok-k">struct</span> <span class="tok-n">nng_cv</span> <span class="tok-n">nng_cv</span><span class="tok-p">;</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_cv_alloc</span><span class="tok-p">(</span><span class="tok-n">nng_cv</span> <span class="tok-o">**</span><span class="tok-n">cvp</span><span class="tok-p">,</span> <span class="tok-n">nng_mtx</span> <span class="tok-o">*</span><span class="tok-n">mtx</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_cv_alloc()</code> function allocates a condition variable, using
+the mutex <em>mtx</em>, and returns it in <em>cvp</em>.</p>
+</div>
+<div class="paragraph">
+<p>Every condition variable is associated with a mutex, which must be
+owned when a thread waits for the condition using
+<a href="nng_cv_wait.3supp.html"><code>nng_cv_wait()</code></a> or
+<a href="nng_cv_until.3supp.html"><code>nng_cv_until()</code></a>.
+The mutex must also be owned when signaling the condition using the
+<a href="nng_cv_wake.3supp.html"><code>nng_cv_wake()</code></a> or
+<a href="nng_cv_wake1.3supp.html"><code>nng_cv_wake1()</code></a> functions.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This function returns 0 on success, and non-zero otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient free memory exists.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_free.3supp.html">nng_cv_free(3supp)</a>,
+<a href="nng_cv_until.3supp.html">nng_cv_until(3supp)</a>,
+<a href="nng_cv_wait.3supp.html">nng_cv_wait(3supp)</a>,
+<a href="nng_cv_wake.3supp.html">nng_cv_wake(3supp)</a>,
+<a href="nng_cv_wake1.3supp.html">nng_cv_wake1(3supp)</a>,
+<a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_cv_free.3supp.html b/man/tip/nng_cv_free.3supp.html
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+<div id="header">
+<h1>nng_cv_free(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_cv_free - free condition variable</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_cv_free</span><span class="tok-p">(</span><span class="tok-n">nng_cv</span> <span class="tok-o">*</span><span class="tok-n">cv</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_cv_free()</code> function frees the condition variable <em>cv</em>.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_cv_until.3supp.html b/man/tip/nng_cv_until.3supp.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_cv_until(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_example">EXAMPLE</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_cv_until - wait for condition or timeout</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_cv_wait</span><span class="tok-p">(</span><span class="tok-n">nng_cv</span> <span class="tok-o">*</span><span class="tok-n">cv</span><span class="tok-p">,</span> <span class="tok-n">nng_time</span> <span class="tok-n">when</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_cv_until()</code> waits until either the condition variable <em>cv</em> is signaled
+by another thread calling either <a href="nng_cv_wake.3supp.html"><code>nng_cv_wake()</code></a> or
+<a href="nng_cv_wake1.3supp.html"><code>nng_cv_wake1()</code></a>, or the system clock (as tracked
+by <a href="nng_clock.3supp.html"><code>nng_clock()</code></a>) reaches <em>when</em>.</p>
+</div>
+<div class="paragraph">
+<p>The caller must have have ownership of the mutex that was used when
+<em>cv</em> was allocated.
+This function will drop the ownership of that mutex, and reacquire it
+atomically just before returning to the caller.
+(The waiting is done without holding the mutex.)</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Any condition may be used or checked, but the condition must be
+checked, as it is possible for this function to wake up &#8220;spuriously&#8221;.
+The best way to do this is inside a loop that repeats until the condition
+tests for true.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_example">EXAMPLE</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The following example demonstrates use of this function:</p>
+</div>
+<div class="listingblock">
+<div class="title">Example 1: Waiting for the condition</div>
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span>
+    <span class="tok-n">nng_mtx_lock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span>  <span class="tok-c1">// assume cv was allocated using m</span>
+    <span class="tok-k">while</span> <span class="tok-p">(</span><span class="tok-o">!</span><span class="tok-n">condition_true</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+        <span class="tok-k">if</span> <span class="tok-p">(</span><span class="tok-n">nng_cv_wait</span><span class="tok-p">(</span><span class="tok-n">cv</span><span class="tok-p">)</span> <span class="tok-o">==</span> <span class="tok-n">NNG_ETIMEDOUT</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+            <span class="tok-n">printf</span><span class="tok-p">(</span><span class="tok-s">&quot;Time out reached!</span><span class="tok-se">\n</span><span class="tok-s">&quot;</span><span class="tok-p">);</span>
+            <span class="tok-k">break</span><span class="tok-p">;</span>
+        <span class="tok-p">}</span>
+    <span class="tok-p">}</span>
+    <span class="tok-c1">// condition_true is true</span>
+    <span class="tok-n">nng_mtx_unlock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Example 2: Signaling the condition</div>
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span>    <span class="tok-n">nng_mtx_lock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span>
+    <span class="tok-n">condition_true</span> <span class="tok-o">=</span> <span class="tok-nb">true</span><span class="tok-p">;</span>
+    <span class="tok-n">cv_wake</span><span class="tok-p">(</span><span class="tok-n">cv</span><span class="tok-p">);</span>
+    <span class="tok-n">nng_mtx_unlock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng_cv_wait.3supp.html">nng_cv_wait(3supp)</a>,
+<a href="nng_cv_wake.3supp.html">nng_cv_wake(3supp)</a>,
+<a href="nng_cv_wake1.3supp.html">nng_cv_wake1(3supp)</a>,
+<a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_mtx_lock.3supp.html">nng_mtx_lock(3supp)</a>,
+<a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_cv_wait.3supp.html b/man/tip/nng_cv_wait.3supp.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_cv_wait(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_example">EXAMPLE</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_cv_wait - wait for condition</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_cv_wait</span><span class="tok-p">(</span><span class="tok-n">nng_cv</span> <span class="tok-o">*</span><span class="tok-n">cv</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_cv_wait()</code> waits for the condition variable <em>cv</em> to be signaled
+by another thread calling either <a href="nng_cv_wake.3supp.html"><code>nng_cv_wake()</code></a> or
+<a href="nng_cv_wake1.3supp.html"><code>nng_cv_wake1()</code></a>.</p>
+</div>
+<div class="paragraph">
+<p>The caller must have have ownership of the mutex that was used when
+<em>cv</em> was allocated.
+This function will drop the ownership of that mutex, and reacquire it
+atomically just before returning to the caller.
+(The waiting is done without holding the mutex.)</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Any condition may be used or checked, but the condition must be
+checked, as it is possible for this function to wake up &#8220;spuriously&#8221;.
+The best way to do this is inside a loop that repeats until the condition
+tests for true.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_example">EXAMPLE</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The following example demonstrates use of this function:</p>
+</div>
+<div class="listingblock">
+<div class="title">Example 1: Waiting for the condition</div>
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span>
+    <span class="tok-n">nng_mtx_lock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span>  <span class="tok-c1">// assume cv was allocated using m</span>
+    <span class="tok-k">while</span> <span class="tok-p">(</span><span class="tok-o">!</span><span class="tok-n">condition_true</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+        <span class="tok-n">nng_cv_wait</span><span class="tok-p">(</span><span class="tok-n">cv</span><span class="tok-p">);</span>
+    <span class="tok-p">}</span>
+    <span class="tok-c1">// condition_true is true</span>
+    <span class="tok-n">nng_mtx_unlock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+<div class="listingblock">
+<div class="title">Example 2: Signaling the condition</div>
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span>    <span class="tok-n">nng_mtx_lock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span>
+    <span class="tok-n">condition_true</span> <span class="tok-o">=</span> <span class="tok-nb">true</span><span class="tok-p">;</span>
+    <span class="tok-n">cv_wake</span><span class="tok-p">(</span><span class="tok-n">cv</span><span class="tok-p">);</span>
+    <span class="tok-n">nng_mtx_unlock</span><span class="tok-p">(</span><span class="tok-n">m</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng_cv_until.3supp.html">nng_cv_until(3supp)</a>,
+<a href="nng_cv_wake.3supp.html">nng_cv_wake(3supp)</a>,
+<a href="nng_cv_wake1.3supp.html">nng_cv_wake1(3supp)</a>,
+<a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_mtx_lock.3supp.html">nng_mtx_lock(3supp)</a>,
+<a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_cv_wake.3supp.html b/man/tip/nng_cv_wake.3supp.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_cv_wake(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_cv_wake - wake all waiters</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_cv_wake</span><span class="tok-p">(</span><span class="tok-n">nng_cv</span> <span class="tok-o">*</span><span class="tok-n">cv</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_cv_wake()</code> wakes any threads waiting for the condition variable <em>cv</em>
+to be signaled in the <a href="nng_cv_wait.3supp.html"><code>nng_cv_wait()</code></a> or
+<a href="nng_cv_until.3supp.html"><code>nng_cv_until()</code></a> functions.</p>
+</div>
+<div class="paragraph">
+<p>The caller must have have ownership of the mutex that was used when
+<em>cv</em> was allocated.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+The caller should already have set the condition that the waiters
+will check, while holding the mutex.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+This function wakes all threads, which is generally safer but can
+lead to a problem known as the &#8220;thundering herd&#8221; when there are many
+waiters, as they are all woken simultaneously.
+See <a href="nng_cv_wake1.3supp.html"><code>nng_cv_wake1()</code></a> for a solution to this problem.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng_cv_until.3supp.html">nng_cv_until(3supp)</a>,
+<a href="nng_cv_wait.3supp.html">nng_cv_wait(3supp)</a>,
+<a href="nng_cv_wake1.3supp.html">nng_cv_wake1(3supp)</a>,
+<a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_mtx_lock.3supp.html">nng_mtx_lock(3supp)</a>,
+<a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_cv_wake1.3supp.html b/man/tip/nng_cv_wake1.3supp.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_cv_wake1(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_cv_wake1 - wake one waiter</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_cv_wake1</span><span class="tok-p">(</span><span class="tok-n">nng_cv</span> <span class="tok-o">*</span><span class="tok-n">cv</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_cv_wake1()</code> wakes at most one thread waiting for the condition
+variable <em>cv</em>
+to be signaled in the <a href="nng_cv_wait.3supp.html"><code>nng_cv_wait()</code></a> or
+<a href="nng_cv_until.3supp.html"><code>nng_cv_until()</code></a> functions.</p>
+</div>
+<div class="paragraph">
+<p>The caller must have have ownership of the mutex that was used when
+<em>cv</em> was allocated.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+The caller should already have set the condition that the waiters
+will check, while holding the mutex.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+While this function avoids the &#8220;thundering herd&#8221; problem, the
+caller cannot predict which waiter will be woken, and so the design must
+ensure that it is sufficient that <em>any</em> waiter be woken.
+When in doubt, it is safer to use <a href="nng_cv_wake.3supp.html"><code>nng_cv_wake()</code></a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng_cv_until.3supp.html">nng_cv_until(3supp)</a>,
+<a href="nng_cv_wait.3supp.html">nng_cv_wait(3supp)</a>,
+<a href="nng_cv_wake.3supp.html">nng_cv_wake(3supp)</a>,
+<a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_mtx_lock.3supp.html">nng_mtx_lock(3supp)</a>,
+<a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_device.3.html b/man/tip/nng_device.3.html
index 401aeefa..eb1b6c88 100644
--- a/man/tip/nng_device.3.html
+++ b/man/tip/nng_device.3.html
@@ -551,6 +551,12 @@ complex network topologies to provide for improved horizontal scalability,
 reliability, and isolation.</p>
 </div>
 <div class="paragraph">
+<p>Only <a href="nng_options.5.html#NNG_OPT_RAW">raw</a> mode sockets may be used with this
+function.
+These can be created using <code>_raw</code> forms of the various socket constructors,
+such as <a href="nng_req_open.3.html"><code>nng_req0_open_raw()</code></a>.</p>
+</div>
+<div class="paragraph">
 <p>The <code>nng_device()</code> function does not return until one of the sockets
 is closed.</p>
 </div>
@@ -585,11 +591,15 @@ be a <em>bus</em> socket.</p>
 <div class="sect2">
 <h3 id="_operation">Operation</h3>
 <div class="paragraph">
-<p>This <code>nng_device()</code> function puts each socket into raw mode
-(see <a href="nng_options.5.html#NNG_OPT_RAW"><code>NNG_OPT_RAW</code></a>), and then moves messages
-between them.
-When a protocol has a backtrace style header, routing information is
-added as the message crosses the forwarder, allowing replies to be
+<p>The <code>nng_device()</code> function moves messages between the provided sockets.</p>
+</div>
+<div class="paragraph">
+<p>When a protocol has a backtrace style header, routing information
+is present in the header of received messages, and is copied to the
+header of the output bound message.
+The underlying raw mode protocols supply the necessary header
+adjustments to add or remove routing headers as needed.
+This allows replies to be
 returned to requestors, and responses to be routed back to surveyors.</p>
 </div>
 <div class="paragraph">
diff --git a/man/tip/nng_dialer_getopt.3.html b/man/tip/nng_dialer_getopt.3.html
index dcf3ccd0..c9b9cf5c 100644
--- a/man/tip/nng_dialer_getopt.3.html
+++ b/man/tip/nng_dialer_getopt.3.html
@@ -541,7 +541,11 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_dialer_getopt_ptr</span><span class="tok-p">(</span><span class="tok-n">nng_dialer</span> <span class="tok-n">d</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">void</span> <span class="tok-o">**</span><span class="tok-n">ptr</span><span class="tok-p">);</span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_dialer_setopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_dialer</span> <span class="tok-n">d</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">zp</span><span class="tok-p">);</span>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_dialer_getopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_dialer</span> <span class="tok-n">d</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">zp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_dialer_getopt_sockaddr</span><span class="tok-p">(</span><span class="tok-n">nng_dialer</span> <span class="tok-n">d</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-n">nng_sockaddr</span> <span class="tok-o">*</span><span class="tok-n">sap</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_dialer_getopt_string</span><span class="tok-p">(</span><span class="tok-n">nng_dialer</span> <span class="tok-n">d</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">char</span> <span class="tok-o">**</span><span class="tok-n">strp</span><span class="tok-p">);</span>
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_dialer_getopt_uint64</span><span class="tok-p">(</span><span class="tok-n">nng_dialer</span> <span class="tok-n">d</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">uint64_t</span> <span class="tok-o">*</span><span class="tok-n">u64p</span><span class="tok-p">);</span></code></pre>
 </div>
@@ -568,6 +572,10 @@ are documented with the transports and protocols themselves.</p>
 <p>In all of these forms, the option <em>opt</em> is retrieved from the dialer <em>d</em>.
 The forms vary based on the type of the option they take.</p>
 </div>
+<div class="paragraph">
+<p>The details of the type, size, and semantics of the option will depend
+on the actual option, and will be documented with the option itself.</p>
+</div>
 <div class="admonitionblock tip">
 <table>
 <tr>
@@ -581,23 +589,6 @@ function.
 </tr>
 </table>
 </div>
-<div class="admonitionblock note">
-<table>
-<tr>
-<td class="icon">
-<i class="fa icon-note" title="Note"></i>
-</td>
-<td class="content">
-No validation that the option is actually of the associated type is
-performed, so the caller must take care to use the <strong>correct</strong> typed form.
-</td>
-</tr>
-</table>
-</div>
-<div class="paragraph">
-<p>The details of the type, size, and semantics of the option will depend
-on the actual option, and will be documented with the option itself.</p>
-</div>
 <div class="sect3">
 <h4 id="_code_nng_dialer_getopt_code"><code>nng_dialer_getopt()</code></h4>
 <div class="paragraph">
@@ -625,7 +616,7 @@ the object.</p>
 <h4 id="_code_nng_dialer_getopt_bool_code"><code>nng_dialer_getopt_bool()</code></h4>
 <div class="paragraph">
 <p>This function is for options which take a boolean (<code>bool</code>).
-The value will be stored at <em>ivalp</em>.</p>
+The value will be stored at <em>bvalp</em>.</p>
 </div>
 </div>
 <div class="sect3">
@@ -661,6 +652,22 @@ typically for buffer sizes, message maximum sizes, and similar options.</p>
 </div>
 </div>
 <div class="sect3">
+<h4 id="_code_nng_dialer_getopt_sockaddr_code"><code>nng_dialer_getopt_sockaddr()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve an <a href="nng_sockaddr.5.html"><code>nng_sockaddr</code></a>
+into the value referenced by <em>sap</em>.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_dialer_getopt_string_code"><code>nng_dialer_getopt_string()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve a string into <em>strp</em>.
+This string is created from the source using <a href="nng_strdup.3.html"><code>nng_strdup()</code></a>
+and consequently must be freed by the caller using
+<a href="nng_strfree.3.html"><code>nng_strfree()</code></a> when it is no longer needed.</p>
+</div>
+</div>
+<div class="sect3">
 <h4 id="_code_nng_dialer_getopt_uint64_code"><code>nng_dialer_getopt_uint64()</code></h4>
 <div class="paragraph">
 <p>This function is used to retrieve a 64-bit unsigned value into the value
@@ -685,10 +692,22 @@ numbers, and similar.</p>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
+<dt class="hdlist1"><code>NNG_EBADTYPE</code></dt>
+<dd>
+<p>Incorrect type for option.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
 <dd>
 <p>Parameter <em>d</em> does not refer to an open dialer.</p>
 </dd>
+<dt class="hdlist1"><code>NNG_EINVAL</code></dt>
+<dd>
+<p>Size of destination <em>val</em> too small for object.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory exists.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
 <dd>
 <p>The option <em>opt</em> is not supported.</p>
@@ -707,10 +726,13 @@ numbers, and similar.</p>
 <div class="paragraph">
 <p><a href="nng_dialer_create.3.html">nng_dialer_create(3)</a>
 <a href="nng_dialer_setopt.3.html">nng_dialer_setopt(3)</a>
+<a href="nng_strdup.3.html">nng_strdup(3)</a>,
 <a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_strfree.3.html">nng_strfree(3)</a>,
 <a href="nng_dialer.5.html">nng_dialer(5)</a>,
 <a href="nng_duration.5.html">nng_duration(5)</a>,
 <a href="nng_options.5.html">nng_options(5)</a>,
+<a href="nng_sockaddr.5.html">nng_sockaddr(5)</a>,
 <a href="nng.7.html">nng(7)</a></p>
 </div>
 </div>
diff --git a/man/tip/nng_dialer_setopt.3.html b/man/tip/nng_dialer_setopt.3.html
index 894313db..148ccd62 100644
--- a/man/tip/nng_dialer_setopt.3.html
+++ b/man/tip/nng_dialer_setopt.3.html
@@ -599,19 +599,6 @@ Generally, it will be easier to use one of the typed forms instead.
 </tr>
 </table>
 </div>
-<div class="admonitionblock note">
-<table>
-<tr>
-<td class="icon">
-<i class="fa icon-note" title="Note"></i>
-</td>
-<td class="content">
-No validation that the option is actually of the associated
-type is performed, so the caller must take care to use the <strong>correct</strong> typed form.
-</td>
-</tr>
-</table>
-</div>
 <div class="sect3">
 <h4 id="_code_nng_dialer_setopt_code"><code>nng_dialer_setopt()</code></h4>
 <div class="paragraph">
@@ -695,6 +682,10 @@ and similar.</p>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
+<dt class="hdlist1"><code>NNG_EBADTYPE</code></dt>
+<dd>
+<p>Incorrect type for option.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
 <dd>
 <p>Parameter <em>d</em> does not refer to an open dialer.</p>
diff --git a/man/tip/nng_free.3.html b/man/tip/nng_free.3.html
index c56fc914..6bfc9d67 100644
--- a/man/tip/nng_free.3.html
+++ b/man/tip/nng_free.3.html
@@ -540,11 +540,11 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 that was previously allocated by <a href="nng_alloc.3.html"><code>nng_alloc()</code></a> or
 <a href="nng_recv.3.html"><code>nng_recv()</code></a> with the <code>NNG_FLAG_ALLOC</code> flag.</p>
 </div>
-<div class="admonitionblock warning">
+<div class="admonitionblock important">
 <table>
 <tr>
 <td class="icon">
-<i class="fa icon-warning" title="Warning"></i>
+<i class="fa icon-important" title="Important"></i>
 </td>
 <td class="content">
 It is very important that <em>size</em> match the allocation size
@@ -553,11 +553,11 @@ used to allocate the memory.
 </tr>
 </table>
 </div>
-<div class="admonitionblock warning">
+<div class="admonitionblock important">
 <table>
 <tr>
 <td class="icon">
-<i class="fa icon-warning" title="Warning"></i>
+<i class="fa icon-important" title="Important"></i>
 </td>
 <td class="content">
 Do not attempt to use this function to deallocate memory
diff --git a/man/tip/nng_getopt.3.html b/man/tip/nng_getopt.3.html
index 889881bc..ffaa72fe 100644
--- a/man/tip/nng_getopt.3.html
+++ b/man/tip/nng_getopt.3.html
@@ -543,6 +543,8 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_getopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-n">s</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">zp</span><span class="tok-p">);</span>
 
+<span class="tok-kt">int</span> <span class="tok-nf">nng_getopt_string</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-n">s</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">char</span> <span class="tok-o">**</span><span class="tok-n">strp</span><span class="tok-p">);</span>
+
 <span class="tok-kt">int</span> <span class="tok-nf">nng_getopt_uint64</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-n">s</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">uint64_t</span> <span class="tok-o">*</span><span class="tok-n">u64p</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
@@ -568,6 +570,10 @@ documented with the transports and protocols themselves.</p>
 <p>In all of these forms, the option <em>opt</em> is retrieved from the socket <em>s</em>.
 The forms vary based on the type of the option they take.</p>
 </div>
+<div class="paragraph">
+<p>The details of the type, size, and semantics of the option will depend
+on the actual option, and will be documented with the option itself.</p>
+</div>
 <div class="admonitionblock tip">
 <table>
 <tr>
@@ -580,23 +586,6 @@ Generally, it will be easier to use one of the typed forms instead.
 </tr>
 </table>
 </div>
-<div class="admonitionblock note">
-<table>
-<tr>
-<td class="icon">
-<i class="fa icon-note" title="Note"></i>
-</td>
-<td class="content">
-No validation that the option is actually of the associated
-type is performed, so the caller must take care to use the <strong>correct</strong> typed form.
-</td>
-</tr>
-</table>
-</div>
-<div class="paragraph">
-<p>The details of the type, size, and semantics of the option will depend
-on the actual option, and will be documented with the option itself.</p>
-</div>
 <div class="sect3">
 <h4 id="_code_nng_getopt_code"><code>nng_getopt()</code></h4>
 <div class="paragraph">
@@ -660,6 +649,15 @@ typically for buffer sizes, message maximum sizes, and similar options.</p>
 </div>
 </div>
 <div class="sect3">
+<h4 id="_code_nng_getopt_string_code"><code>nng_getopt_string()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve a string into <em>strp</em>.
+This string is created from the source using <a href="nng_strdup.3.html"><code>nng_strdup()</code></a>
+and consequently must be freed by the caller using
+<a href="nng_strfree.3.html"><code>nng_strfree()</code></a> when it is no longer needed.</p>
+</div>
+</div>
+<div class="sect3">
 <h4 id="_code_nng_getopt_uint64_code"><code>nng_getopt_uint64()</code></h4>
 <div class="paragraph">
 <p>This function is used to retrieve a 64-bit unsigned value into the value
@@ -684,10 +682,22 @@ numbers, and similar.</p>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
+<dt class="hdlist1"><code>NNG_EBADTYPE</code></dt>
+<dd>
+<p>Incorrect type for option.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
 <dd>
 <p>Parameter <em>s</em> does not refer to an open socket.</p>
 </dd>
+<dt class="hdlist1"><code>NNG_EINVAL</code></dt>
+<dd>
+<p>Size of destination <em>val</em> too small for object.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory exists.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
 <dd>
 <p>The option <em>opt</em> is not supported.</p>
@@ -708,7 +718,9 @@ numbers, and similar.</p>
 <a href="nng_listener_getopt.3.html">nng_listener_getopt(3)</a>,
 <a href="nng_pipe_getopt.3.html">nng_pipe_getopt(3)</a>,
 <a href="nng_setopt.3.html">nng_setopt(3)</a>,
+<a href="nng_strdup.3.html">nng_strdup(3)</a>,
 <a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_strfree.3.html">nng_strfree(3)</a>,
 <a href="nng_duration.5.html">nng_duration(5)</a>,
 <a href="nng_options.5.html">nng_options(5)</a>,
 <a href="nng_socket.5.html">nng_socket(5)</a>,
diff --git a/man/tip/nng_listener_getopt.3.html b/man/tip/nng_listener_getopt.3.html
index 585a9be2..96d44885 100644
--- a/man/tip/nng_listener_getopt.3.html
+++ b/man/tip/nng_listener_getopt.3.html
@@ -531,8 +531,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="content">
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">void</span> <span class="tok-o">*</span><span class="tok-n">val</span><span class="tok-p">,</span>
-    <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">valszp</span><span class="tok-p">);</span>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">void</span> <span class="tok-o">*</span><span class="tok-n">val</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">valszp</span><span class="tok-p">);</span>
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt_bool</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">bool</span> <span class="tok-o">*</span><span class="tok-n">bvalp</span><span class="tok-p">);</span>
 
@@ -542,7 +541,11 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt_ptr</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">void</span> <span class="tok-o">**</span><span class="tok-n">ptr</span><span class="tok-p">);</span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_listener_setopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">zp</span><span class="tok-p">);</span>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">zp</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt_sockaddr</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-n">nng_sockaddr</span> <span class="tok-o">*</span><span class="tok-n">sap</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt_string</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">char</span> <span class="tok-o">**</span><span class="tok-n">strp</span><span class="tok-p">);</span>
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_listener_getopt_uint64</span><span class="tok-p">(</span><span class="tok-n">nng_listener</span> <span class="tok-n">l</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">uint64_t</span> <span class="tok-o">*</span><span class="tok-n">u64p</span><span class="tok-p">);</span></code></pre>
 </div>
@@ -569,6 +572,10 @@ are documented with the transports and protocols themselves.</p>
 <p>In all of these forms, the option <em>opt</em> is retrieved from the listener <em>l</em>.
 The forms vary based on the type of the option they take.</p>
 </div>
+<div class="paragraph">
+<p>The details of the type, size, and semantics of the option will depend
+on the actual option, and will be documented with the option itself.</p>
+</div>
 <div class="admonitionblock tip">
 <table>
 <tr>
@@ -582,23 +589,6 @@ function.
 </tr>
 </table>
 </div>
-<div class="admonitionblock note">
-<table>
-<tr>
-<td class="icon">
-<i class="fa icon-note" title="Note"></i>
-</td>
-<td class="content">
-No validation that the option is actually of the associated type is
-performed, so the caller must take care to use the <strong>correct</strong> typed form.
-</td>
-</tr>
-</table>
-</div>
-<div class="paragraph">
-<p>The details of the type, size, and semantics of the option will depend
-on the actual option, and will be documented with the option itself.</p>
-</div>
 <div class="sect3">
 <h4 id="_code_nng_listener_getopt_code"><code>nng_listener_getopt()</code></h4>
 <div class="paragraph">
@@ -626,7 +616,7 @@ the object.</p>
 <h4 id="_code_nng_listener_getopt_bool_code"><code>nng_listener_getopt_bool()</code></h4>
 <div class="paragraph">
 <p>This function is for options which take a boolean (<code>bool</code>).
-The value will be stored at <em>ivalp</em>.</p>
+The value will be stored at <em>bvalp</em>.</p>
 </div>
 </div>
 <div class="sect3">
@@ -640,9 +630,7 @@ The value will be stored at <em>ivalp</em>.</p>
 <h4 id="_code_nng_listener_getopt_ms_code"><code>nng_listener_getopt_ms()</code></h4>
 <div class="paragraph">
 <p>This function is used to retrieve time <a href="nng_duration.5.html">durations</a>
-(such as timeouts), stored in <em>durp</em> as a number of milliseconds.
-(The special value <code>NNG_DUR_INFINITE</code> means an infinite amount of time, and
-the special value <code>NNG_DUR_DEFAULT</code> means a context-specific default.)</p>
+(such as timeouts), stored in <em>durp</em> as a number of milliseconds.</p>
 </div>
 </div>
 <div class="sect3">
@@ -662,6 +650,22 @@ typically for buffer sizes, message maximum sizes, and similar options.</p>
 </div>
 </div>
 <div class="sect3">
+<h4 id="_code_nng_listener_getopt_sockaddr_code"><code>nng_listener_getopt_sockaddr()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve an <a href="nng_sockaddr.5.html"><code>nng_sockaddr</code></a>
+into the value referenced by <em>sap</em>.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_listener_getopt_string_code"><code>nng_listener_getopt_string()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve a string into <em>strp</em>.
+This string is created from the source using <a href="nng_strdup.3.html"><code>nng_strdup()</code></a>
+and consequently must be freed by the caller using
+<a href="nng_strfree.3.html"><code>nng_strfree()</code></a> when it is no longer needed.</p>
+</div>
+</div>
+<div class="sect3">
 <h4 id="_code_nng_listener_getopt_uint64_code"><code>nng_listener_getopt_uint64()</code></h4>
 <div class="paragraph">
 <p>This function is used to retrieve a 64-bit unsigned value into the value
@@ -686,10 +690,22 @@ numbers, and similar.</p>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
+<dt class="hdlist1"><code>NNG_EBADTYPE</code></dt>
+<dd>
+<p>Incorrect type for option.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
 <dd>
 <p>Parameter <em>l</em> does not refer to an open listener.</p>
 </dd>
+<dt class="hdlist1"><code>NNG_EINVAL</code></dt>
+<dd>
+<p>Size of destination <em>val</em> too small for object.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory exists.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ENOTSUP</code></dt>
 <dd>
 <p>The option <em>opt</em> is not supported.</p>
@@ -710,7 +726,13 @@ numbers, and similar.</p>
 <a href="nng_listener_create.3.html">nng_listener_create(3)</a>
 <a href="nng_listener_setopt.3.html">nng_listener_setopt(3)</a>
 <a href="nng_getopt.3.html">nng_getopt(3)</a>,
+<a href="nng_strdup.3.html">nng_strdup(3)</a>,
 <a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_strfree.3.html">nng_strfree(3)</a>,
+<a href="nng_duration.5.html">nng_duration(5)</a>,
+<a href="nng_listener.5.html">nng_listener(5)</a>,
+<a href="nng_options.5.html">nng_options(5)</a>,
+<a href="nng_sockaddr.5.html">nng_sockaddr(5)</a>,
 <a href="nng.7.html">nng(7)</a></p>
 </div>
 </div>
diff --git a/man/tip/nng_listener_setopt.3.html b/man/tip/nng_listener_setopt.3.html
index 6d6b9e55..5605d4d1 100644
--- a/man/tip/nng_listener_setopt.3.html
+++ b/man/tip/nng_listener_setopt.3.html
@@ -597,19 +597,6 @@ Generally, it will be easier to use one of the typed forms instead.
 </tr>
 </table>
 </div>
-<div class="admonitionblock note">
-<table>
-<tr>
-<td class="icon">
-<i class="fa icon-note" title="Note"></i>
-</td>
-<td class="content">
-No validation that the option is actually of the associated
-type is performed, so the caller must take care to use the <strong>correct</strong> typed form.
-</td>
-</tr>
-</table>
-</div>
 <div class="sect3">
 <h4 id="_code_nng_listener_setopt_code"><code>nng_listener_setopt()</code></h4>
 <div class="paragraph">
@@ -693,6 +680,10 @@ and similar.</p>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
+<dt class="hdlist1"><code>NNG_EBADTYPE</code></dt>
+<dd>
+<p>Incorrect type for option.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
 <dd>
 <p>Parameter <em>l</em> does not refer to an open listener.</p>
@@ -726,6 +717,7 @@ and similar.</p>
 <a href="nng_listener_getopt.3.html">nng_listener_getopt(3)</a>
 <a href="nng_setopt.3.html">nng_setopt(3)</a>,
 <a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_duration.5.html">nng_duration(5)</a>,
 <a href="nng_listener.5.html">nng_listener(5)</a>,
 <a href="nng_options.5.html">nng_options(5)</a>,
 <a href="nng.7.html">nng(7)</a></p>
diff --git a/man/tip/nng_msleep.3supp.html b/man/tip/nng_msleep.3supp.html
new file mode 100644
index 00000000..8658c615
--- /dev/null
+++ b/man/tip/nng_msleep.3supp.html
@@ -0,0 +1,588 @@
+---
+version: tip
+layout: refman
+---
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="generator" content="Asciidoctor 1.5.6.1">
+<title>nng_msleep(3supp)</title>
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_msleep(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_msleep - sleep milliseconds</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_msleep</span><span class="tok-p">(</span><span class="tok-n">nng_duration</span> <span class="tok-n">msec</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_msleep()</code> blocks the caller for at least <em>msec</em> milliseconds.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+This function may block for longer than requested.
+The actual wait time is determined by the capabilities of the
+underlying system.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_sleep_aio.3.html">nng_sleep_aio(3)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_clock.3supp.html">nng_clock(3supp)</a>,
+<a href="nng_duration.5.html">nng_duration(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_mtx_alloc.3supp.html b/man/tip/nng_mtx_alloc.3supp.html
new file mode 100644
index 00000000..915fdcbf
--- /dev/null
+++ b/man/tip/nng_mtx_alloc.3supp.html
@@ -0,0 +1,594 @@
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_mtx_alloc(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_mtx_alloc - allocate mutex</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-k">typedef</span> <span class="tok-k">struct</span> <span class="tok-n">nng_mtx</span> <span class="tok-n">nng_mtx</span><span class="tok-p">;</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_mtx_alloc</span><span class="tok-p">(</span><span class="tok-n">nng_mtx</span> <span class="tok-o">**</span><span class="tok-n">mtxp</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_mtx_alloc()</code> function allocates mutex and returns it in <em>mtxp</em>.</p>
+</div>
+<div class="paragraph">
+<p>The mutex objects created by this function are suitable only for
+simple lock and unlock operations, and are not recursive.
+Every effort has been made to use light-weight underlying primitives when available.</p>
+</div>
+<div class="paragraph">
+<p>Mutex (mutual exclusion) objects can be thought of as binary semaphores,
+where only a single thread of execution is permitted to &#8220;own&#8221; the semaphore.</p>
+</div>
+<div class="paragraph">
+<p>Furthermore, a mutex can only be unlocked by the thread that locked it.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This function returns 0 on success, and non-zero otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient free memory exists.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng_mtx_free.3supp.html">nng_mtx_free(3supp)</a>,
+<a href="nng_mtx_lock.3supp.html">nng_mtx_lock(3supp)</a>,
+<a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock(3supp)</a>,
+<a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_mtx_free.3supp.html b/man/tip/nng_mtx_free.3supp.html
new file mode 100644
index 00000000..1e6cda92
--- /dev/null
+++ b/man/tip/nng_mtx_free.3supp.html
@@ -0,0 +1,572 @@
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_mtx_free(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_mtx_free - free mutex</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_mtx_free</span><span class="tok-p">(</span><span class="tok-n">nng_mtx</span> <span class="tok-o">*</span><span class="tok-n">mtx</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_mtx_free()</code> function frees the mutex <em>mtx</em>.
+The mutex must not be locked when this function is called.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_mtx_lock.3supp.html b/man/tip/nng_mtx_lock.3supp.html
new file mode 100644
index 00000000..befe5201
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_mtx_lock(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_mtx_lock - lock mutex</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_mtx_lock</span><span class="tok-p">(</span><span class="tok-n">nng_mtx</span> <span class="tok-o">*</span><span class="tok-n">mtx</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_mtx_lock()</code> acquires exclusive ownership of the mutex <em>mtx</em>.
+If the lock is already owned, this function will wait until the current
+owner releases it with <a href="nng_mtx_unlock.3supp.html"><code>nng_mtx_unlock()</code></a>.</p>
+</div>
+<div class="paragraph">
+<p>If multiple threads are waiting for the lock, the order of acquisition
+is not specified.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+A mutex can <em>only</em> be unlocked by the thread that locked it.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+Mutex locks are <em>not</em> recursive; attempts to reacquire the
+same mutex may result in deadlock or aborting the current program.
+It is a programming error for the owner of a mutex to attempt to
+reacquire it.
+</td>
+</tr>
+</table>
+</div>
+<div class="sidebarblock">
+<div class="content">
+<div class="paragraph">
+<p><em>NNG</em> offers neither a &#8220;trylock&#8221; operation, nor recursive mutexes.
+This is by design, as <em>NNG</em> itself does not use such things,
+and most often the need for them is the result of poor design.
+If such capabilities are needed, they may be synthesized fairly
+easily from mutexes and condition variables.</p>
+</div>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_mtx_unlock.3supp.html">nng_mtx_unlock(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_mtx_unlock.3supp.html b/man/tip/nng_mtx_unlock.3supp.html
new file mode 100644
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_mtx_unlock(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_mtx_lock - lock mutex</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_mtx_unlock</span><span class="tok-p">(</span><span class="tok-n">nng_mtx</span> <span class="tok-o">*</span><span class="tok-n">mtx</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_mtx_unlock()</code> reqlinquishes ownership of the mutex <em>mtx</em> that
+was previously acquired via <a href="nng_mtx_lock.3supp.html"><code>nng_mtx_lock()</code></a>.</p>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+A mutex can <em>only</em> be unlocked by the thread that locked it.
+Attempting to unlock a mutex that is not owned by the caller will result
+in undefined behavior.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_mtx_lock.3supp.html">nng_mtx_lock(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_options.5.html b/man/tip/nng_options.5.html
index e972ec41..bde2e88a 100644
--- a/man/tip/nng_options.5.html
+++ b/man/tip/nng_options.5.html
@@ -639,14 +639,15 @@ listeners but not dialers.</p>
 <p>
 
 (<code>bool</code>)
-This option determines whether the socket is in &#8220;raw&#8221; mode.
+This read-only option indicates whether the socket is in &#8220;raw&#8221; mode.
 If <code>true</code>, the socket is in &#8220;raw&#8221; mode, and if <code>false</code> the socket is
 in &#8220;cooked&#8221; mode.
 Raw mode sockets generally do not have any protocol-specific semantics applied
 to them; instead the application is expected to perform such semantics itself.
 (For example, in &#8220;cooked&#8221; mode a <a href="nng_rep.7.html"><em>rep</em></a> socket would
 automatically copy message headers from a received message to the corresponding
-reply, whereas in &#8220;raw&#8221; mode this is not done.)</p>
+reply, whereas in &#8220;raw&#8221; mode this is not done.)
+See <a href="nng.7.html#raw_mode">Raw Mode</a> for more details.</p>
 </dd>
 </dl>
 </div>
diff --git a/man/tip/nng_opts_parse.3supp.html b/man/tip/nng_opts_parse.3supp.html
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_opts_parse(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a>
+<ul class="sectlevel2">
+<li><a href="#_option_specification">Option Specification</a></li>
+<li><a href="#_long_options">Long Options</a></li>
+<li><a href="#_short_options">Short Options</a></li>
+<li><a href="#_prefix_matching">Prefix Matching</a></li>
+</ul>
+</li>
+<li><a href="#_example">EXAMPLE</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_opts_parse - parse command line options</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/options.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-k">typedef</span> <span class="tok-k">struct</span> <span class="tok-n">nng_optspec</span> <span class="tok-p">{</span>
+    <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">o_name</span><span class="tok-p">;</span>  <span class="tok-c1">// Long style name (may be NULL for short only)</span>
+    <span class="tok-kt">int</span>         <span class="tok-n">o_short</span><span class="tok-p">;</span> <span class="tok-c1">// Short option (no clustering!)</span>
+    <span class="tok-kt">int</span>         <span class="tok-n">o_val</span><span class="tok-p">;</span>   <span class="tok-c1">// Value stored on a good parse (&gt;0)</span>
+    <span class="tok-kt">bool</span>        <span class="tok-n">o_arg</span><span class="tok-p">;</span>   <span class="tok-c1">// Option takes an argument if true</span>
+<span class="tok-p">}</span> <span class="tok-n">nng_optspec</span><span class="tok-p">;</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_opts_parse</span><span class="tok-p">(</span><span class="tok-kt">int</span> <span class="tok-n">argc</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">**</span><span class="tok-n">argv</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-n">nng_optspec</span> <span class="tok-o">*</span><span class="tok-n">spec</span><span class="tok-p">,</span> <span class="tok-kt">int</span> <span class="tok-o">*</span><span class="tok-n">val</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">**</span><span class="tok-n">arg</span><span class="tok-p">,</span> <span class="tok-kt">int</span> <span class="tok-o">*</span><span class="tok-n">idx</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_opts_parse()</code> is function is a supplemental funtion intened to
+facilitate parsing command line arguments.
+This function exists largely to stand in for <code>getopt()</code> from POSIX
+systems, but it is available everywhere that <em>NNG</em> is, and it includes
+some capabilities missing from <code>getopt()</code>.</p>
+</div>
+<div class="paragraph">
+<p>The function parses arguments from <code>main()</code> (using <em>argc</em> and <em>argv</em>),
+starting at the index referenced by <em>idx</em>.
+(New invocations typically set the value pointed to by <em>idx</em> to 1.)</p>
+</div>
+<div class="paragraph">
+<p>Options are parsed as specified by <em>spec</em> (see <a href="#_option_specification">Option Specification</a>.)
+The value of the parsed option will be stored at the address indicated by
+<em>val</em>, and the value of <em>idx</em> will be incremented to reflect the next
+option to parse.</p>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+For using this to parse command-line like strings that do not include
+the command name itself, set the value referenced by <em>idx</em> to zero
+instead of one.
+</td>
+</tr>
+</table>
+</div>
+<div class="paragraph">
+<p>If the option had an argument, a pointer to that is returned at the address
+referenced by <em>arg</em>.</p>
+</div>
+<div class="paragraph">
+<p>This function should be called repeatedly, until it returns either -1
+(indicating the end of options is reached) or a non-zero error code is
+returned.</p>
+</div>
+<div class="sect2">
+<h3 id="_option_specification">Option Specification</h3>
+<div class="paragraph">
+<p>The calling program must first create an array of <code>nng_optspec</code> structures
+describing the options to be supported.
+This structure has the following members:</p>
+</div>
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>o_name</code></dt>
+<dd>
+<p>The long style name for the option, such as "verbose".
+This will be parsed on the command line when it is prefixed with two dashes.
+It may be <code>NULL</code> if only a short option is to be supported.</p>
+</dd>
+<dt class="hdlist1"><code>o_short</code></dt>
+<dd>
+<p>This is a single letter (at present only ASCII letters are supported).
+These options appear as just a single letter, and are prefixed with a single dash on the command line.
+The use of a slash in lieu of the dash is <em>not</em> supported, in order to avoid confusion with path name arguments.
+This value may be set to 0 if no short option is needed.</p>
+</dd>
+<dt class="hdlist1"><code>o_val</code></dt>
+<dd>
+<p>This is a numeric value that is unique to this option.
+This value is assigned by the application program, and must be non-zero
+for a valid option.
+If this is zero, then it indicates the end of the specifications, and the
+rest of this structure is ignored.
+The value will be returned to the caller in <em>val</em> by <code>nng_opts_parse()</code> when
+this option is parsed from the command line.</p>
+</dd>
+<dt class="hdlist1"><code>o_arg</code></dt>
+<dd>
+<p>This value should be set to <code>true</code> if the option should take an argument.</p>
+</dd>
+</dl>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_long_options">Long Options</h3>
+<div class="paragraph">
+<p>Long options are parsed from the <em>argv</em> array, and are indicated when
+the element being scanned starts with two dashes.
+For example, the "verbose" option would be specified as <code>--verbose</code> on
+the command line.
+If a long option takes an argument, it can either immediately follow
+the option as the next element in <em>argv</em>, or it can be appended to
+the option, separated from the option by an equals sign (<code>=</code>) or a
+colon (<code>:</code>).</p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_short_options">Short Options</h3>
+<div class="paragraph">
+<p>Short options appear by themselves in an <em>argv</em> element, prefixed by a
+dash (<code>-</code>).
+If the short option takes an argument, it can either be appended in the
+same element of <em>argv</em>, or may appear in the next <em>argv</em> element.</p>
+</div>
+<div class="admonitionblock note">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-note" title="Note"></i>
+</td>
+<td class="content">
+Option clustering, where multiple options can be crammed together in
+a single <em>argv</em> element, is not supported by this function (yet).
+</td>
+</tr>
+</table>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_prefix_matching">Prefix Matching</h3>
+<div class="paragraph">
+<p>When using long options, the parser will match if it is equal to a prefix
+of the <code>o_name</code> member of a option specification, provided that it do so
+unambiguously (meaning it must not match any other option specification.)</p>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_example">EXAMPLE</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The following program fragment demonstrates this function.</p>
+</div>
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span>    <span class="tok-k">enum</span> <span class="tok-p">{</span> <span class="tok-n">OPT_LOGFILE</span><span class="tok-p">,</span> <span class="tok-n">OPT_VERBOSE</span> <span class="tok-p">};</span>
+    <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">logfile</span><span class="tok-p">;</span> <span class="tok-c1">// options to be set</span>
+    <span class="tok-kt">bool</span> <span class="tok-n">verbose</span><span class="tok-p">;</span>
+
+    <span class="tok-k">static</span> <span class="tok-n">nng_optspec</span> <span class="tok-n">specs</span><span class="tok-p">[]</span> <span class="tok-o">=</span> <span class="tok-p">{</span>
+        <span class="tok-p">{</span>
+            <span class="tok-p">.</span><span class="tok-n">o_name</span> <span class="tok-o">=</span> <span class="tok-s">&quot;logfile&quot;</span><span class="tok-p">,</span>
+            <span class="tok-p">.</span><span class="tok-n">o_short</span> <span class="tok-o">=</span> <span class="tok-sc">&#39;D&#39;</span><span class="tok-p">,</span>
+            <span class="tok-p">.</span><span class="tok-n">o_val</span> <span class="tok-o">=</span> <span class="tok-n">OPT_LOGFILE</span><span class="tok-p">,</span>
+            <span class="tok-p">.</span><span class="tok-n">o_arg</span> <span class="tok-o">=</span> <span class="tok-nb">true</span><span class="tok-p">,</span>
+        <span class="tok-p">},</span> <span class="tok-p">{</span>
+            <span class="tok-p">.</span><span class="tok-n">o_name</span> <span class="tok-o">=</span> <span class="tok-s">&quot;verbose&quot;</span><span class="tok-p">,</span>
+            <span class="tok-p">.</span><span class="tok-n">o_short</span> <span class="tok-o">=</span> <span class="tok-sc">&#39;V&#39;</span><span class="tok-p">,</span>
+            <span class="tok-p">.</span><span class="tok-n">o_val</span> <span class="tok-o">=</span> <span class="tok-n">OPT_VERBOSE</span><span class="tok-p">,</span>
+            <span class="tok-p">.</span><span class="tok-n">o_arg</span> <span class="tok-o">=</span> <span class="tok-nb">false</span><span class="tok-p">,</span>
+        <span class="tok-p">},</span> <span class="tok-p">{</span>
+            <span class="tok-p">.</span><span class="tok-n">o_val</span> <span class="tok-o">=</span> <span class="tok-mi">0</span><span class="tok-p">;</span> <span class="tok-c1">// Terminate array</span>
+        <span class="tok-p">}</span>
+    <span class="tok-p">};</span>
+
+    <span class="tok-k">for</span> <span class="tok-p">(</span><span class="tok-kt">int</span> <span class="tok-n">idx</span> <span class="tok-o">=</span> <span class="tok-mi">1</span><span class="tok-p">;;)</span> <span class="tok-p">{</span>
+        <span class="tok-kt">int</span> <span class="tok-n">rv</span><span class="tok-p">,</span> <span class="tok-n">opt</span><span class="tok-p">;</span>
+        <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">arg</span><span class="tok-p">;</span>
+        <span class="tok-n">rv</span> <span class="tok-o">=</span> <span class="tok-n">nng_opts_parse</span><span class="tok-p">(</span><span class="tok-n">argc</span><span class="tok-p">,</span> <span class="tok-n">argv</span><span class="tok-p">,</span> <span class="tok-n">specs</span><span class="tok-p">,</span> <span class="tok-o">&amp;</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-o">&amp;</span><span class="tok-n">arg</span><span class="tok-p">,</span> <span class="tok-o">&amp;</span><span class="tok-n">idx</span><span class="tok-p">);</span>
+        <span class="tok-k">if</span> <span class="tok-p">(</span><span class="tok-n">rv</span> <span class="tok-o">!=</span> <span class="tok-mi">0</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+            <span class="tok-k">break</span><span class="tok-p">;</span>
+        <span class="tok-p">}</span>
+        <span class="tok-k">switch</span> <span class="tok-p">(</span><span class="tok-n">opt</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+        <span class="tok-k">case</span> <span class="tok-nl">OPT_LOGFILE</span><span class="tok-p">:</span>
+            <span class="tok-n">logfile</span> <span class="tok-o">=</span> <span class="tok-n">arg</span><span class="tok-p">;</span>
+            <span class="tok-k">break</span><span class="tok-p">;</span>
+        <span class="tok-k">case</span> <span class="tok-nl">OPT_VERBOSE</span><span class="tok-p">:</span>
+            <span class="tok-n">verbose</span> <span class="tok-o">=</span> <span class="tok-nb">true</span><span class="tok-p">;</span>
+            <span class="tok-k">break</span><span class="tok-p">;</span>
+        <span class="tok-p">}</span>
+    <span class="tok-p">}</span>
+    <span class="tok-k">if</span> <span class="tok-p">(</span><span class="tok-n">rv</span> <span class="tok-o">!=</span> <span class="tok-o">-</span><span class="tok-mi">1</span><span class="tok-p">)</span> <span class="tok-p">{</span>
+        <span class="tok-n">printf</span><span class="tok-p">(</span><span class="tok-s">&quot;Options error: %s</span><span class="tok-se">\n</span><span class="tok-s">&quot;</span><span class="tok-p">,</span> <span class="tok-n">nng_strerror</span><span class="tok-p">(</span><span class="tok-n">rv</span><span class="tok-p">));</span>
+        <span class="tok-n">exit</span><span class="tok-p">(</span><span class="tok-mi">1</span><span class="tok-p">);</span>
+    <span class="tok-p">}</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This function returns 0 if an option parsed correctly, -1 if
+no more options are available to be parsed, or an error number otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_EAMBIGUOUS</code></dt>
+<dd>
+<p>Parsed option matches more than one specification.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_ENOARG</code></dt>
+<dd>
+<p>Option requires an argument, but one is not present.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_EINVAL</code></dt>
+<dd>
+<p>An invalid (unknown) argument is present.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_pair.7.html b/man/tip/nng_pair.7.html
index e08bfa95..98e77823 100644
--- a/man/tip/nng_pair.7.html
+++ b/man/tip/nng_pair.7.html
@@ -532,17 +532,13 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="listingblock">
 <div class="title">Version 0</div>
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pair0/pair.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pair0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pair0/pair.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 <div class="listingblock">
 <div class="title">Version 1</div>
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pair1/pair.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pair1_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pair1/pair.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -563,9 +559,11 @@ some additional sophistication in the application.</p>
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <code>nng_pair_open()</code> call creates a <em>pair</em> socket.  Normally, this
-pattern will block when attempting to send a message, if no peer is
-able to receive the message.</p>
+<p>The <a href="nng_pair_open.3.html"><code>nng_pair_open()</code></a> functions create <em>pair</em> socket.</p>
+</div>
+<div class="paragraph">
+<p>Normally, this pattern will block when attempting to send a message if
+no peer is able to receive the message.</p>
 </div>
 <div class="admonitionblock note">
 <table>
diff --git a/man/tip/nng_pair_open.3.html b/man/tip/nng_pair_open.3.html
index cc2fcd66..0eb51508 100644
--- a/man/tip/nng_pair_open.3.html
+++ b/man/tip/nng_pair_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="content">
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pair0/pair.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pair0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pair0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pair0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 <div class="listingblock">
@@ -536,7 +538,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="content">
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pair1/pair.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pair1_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pair1_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pair1_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -549,6 +553,12 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 create a <a href="nng_pair.7.html"><em>pair</em></a> version 0 or version 1
 <a href="nng_socket.5.html">socket</a> and return it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_pair0_open_raw()</code> and <code>nng_pair1_open_raw()</code> functions
+create a <a href="nng_pair.7.html"><em>pair</em></a> version 0 or version 1
+<a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode and return it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
diff --git a/man/tip/nng_pipe_getopt.3.html b/man/tip/nng_pipe_getopt.3.html
index ee0857d5..5f7220e1 100644
--- a/man/tip/nng_pipe_getopt.3.html
+++ b/man/tip/nng_pipe_getopt.3.html
@@ -541,6 +541,10 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_dialer_getopt_ptr</span><span class="tok-p">(</span><span class="tok-n">nng_pipe</span> <span class="tok-n">p</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">void</span> <span class="tok-o">**</span><span class="tok-n">ptr</span><span class="tok-p">);</span>
 
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pipe_getopt_sockaddr</span><span class="tok-p">(</span><span class="tok-n">nng_pipe</span> <span class="tok-n">p</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-n">nng_sockaddr</span> <span class="tok-o">*</span><span class="tok-n">sap</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pipe_getopt_string</span><span class="tok-p">(</span><span class="tok-n">nng_pipe</span> <span class="tok-n">p</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">char</span> <span class="tok-o">**</span><span class="tok-n">strp</span><span class="tok-p">);</span>
+
 <span class="tok-kt">int</span> <span class="tok-nf">nng_pipe_getopt_size</span><span class="tok-p">(</span><span class="tok-n">nng_pipe</span> <span class="tok-n">p</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">size_t</span> <span class="tok-o">*</span><span class="tok-n">zp</span><span class="tok-p">);</span>
 
 <span class="tok-kt">int</span> <span class="tok-nf">nng_pipe_getopt_uint64</span><span class="tok-p">(</span><span class="tok-n">nng_pipe</span> <span class="tok-n">p</span><span class="tok-p">,</span> <span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">opt</span><span class="tok-p">,</span> <span class="tok-kt">uint64_t</span> <span class="tok-o">*</span><span class="tok-n">u64p</span><span class="tok-p">);</span></code></pre>
@@ -618,8 +622,6 @@ the object.</p>
 </td>
 <td class="content">
 Generally, it will be easier to use one of the typed forms instead.
-Note however that no validation that the option is actually of the associated
-type is performed, so the caller must take care to use the <strong>correct</strong> typed form.
 </td>
 </tr>
 </table>
@@ -665,6 +667,22 @@ typically for buffer sizes, message maximum sizes, and similar options.</p>
 </div>
 </div>
 <div class="sect3">
+<h4 id="_code_nng_pipe_getopt_sockaddr_code"><code>nng_pipe_getopt_sockaddr()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve an <a href="nng_sockaddr.5.html"><code>nng_sockaddr</code></a>
+into <em>sap</em>.</p>
+</div>
+</div>
+<div class="sect3">
+<h4 id="_code_nng_pipe_getopt_string_code"><code>nng_pipe_getopt_string()</code></h4>
+<div class="paragraph">
+<p>This function is used to retrieve a string into <em>strp</em>.
+This string is created from the source using <a href="nng_strdup.3.html"><code>nng_strdup()</code></a>
+and consequently must be freed by the caller using
+<a href="nng_strfree.3.html"><code>nng_strfree()</code></a> when it is no longer needed.</p>
+</div>
+</div>
+<div class="sect3">
 <h4 id="_code_nng_pipe_getopt_uint64_code"><code>nng_pipe_getopt_uint64()</code></h4>
 <div class="paragraph">
 <p>This function is used to retriev a 64-bit unsigned value into the value
@@ -689,6 +707,10 @@ related to identifiers, network numbers, and similar.</p>
 <div class="sectionbody">
 <div class="dlist">
 <dl>
+<dt class="hdlist1"><code>NNG_EBADTYPE</code></dt>
+<dd>
+<p>Incorrect type for option.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_ECLOSED</code></dt>
 <dd>
 <p>Parameter <em>p</em> does not refer to an open pipe.</p>
@@ -697,6 +719,14 @@ related to identifiers, network numbers, and similar.</p>
 <dd>
 <p>The option <em>opt</em> is not supported.</p>
 </dd>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient memory exists.</p>
+</dd>
+<dt class="hdlist1"><code>NNG_EINVAL</code></dt>
+<dd>
+<p>Size of destination <em>val</em> too small for object.</p>
+</dd>
 <dt class="hdlist1"><code>NNG_EWRITEONLY</code></dt>
 <dd>
 <p>The option <em>opt</em> is write-only.</p>
@@ -713,8 +743,13 @@ related to identifiers, network numbers, and similar.</p>
 <a href="nng_getopt.3.html">nng_getopt(3)</a>,
 <a href="nng_listener_setopt.3.html">nng_listener_setopt(3)</a>
 <a href="nng_msg_get_pipe.3.html">nng_msg_get_pipe(3)</a>
+<a href="nng_strdup.3.html">nng_strdup(3)</a>,
 <a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_strfree.3.html">nng_strfree(3)</a>,
+<a href="nng_duration.5.html">nng_duration(5)</a>,
 <a href="nng_options.5.html">nng_options(5)</a>,
+<a href="nng_pipe.5.html">nng_pipe(5)</a>,
+<a href="nng_sockaddr.5.html">nng_sockaddr(5)</a>,
 <a href="nng.7.html">nng(7)</a></p>
 </div>
 </div>
diff --git a/man/tip/nng_pub.7.html b/man/tip/nng_pub.7.html
index 0eb2fbef..87f43112 100644
--- a/man/tip/nng_pub.7.html
+++ b/man/tip/nng_pub.7.html
@@ -530,9 +530,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pubsub0/pub.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pub0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pubsub0/pub.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -576,7 +574,7 @@ Applications should construct their messages accordingly.</p>
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <a href="nng_pub_open.3.html"><code>nng_pub0_open()</code></a> call creates a publisher socket.
+<p>The <a href="nng_pub_open.3.html"><code>nng_pub0_open()</code></a> functions create a publisher socket.
 This socket may be used to send messages, but is unable to receive them.
 Attempts to receive messages will result in <code>NNG_ENOTSUP</code>.</p>
 </div>
diff --git a/man/tip/nng_pub_open.3.html b/man/tip/nng_pub_open.3.html
index e902e7e6..29d40cf0 100644
--- a/man/tip/nng_pub_open.3.html
+++ b/man/tip/nng_pub_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pubsub0/pub.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pub0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pub0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pub0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -540,13 +542,18 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <p>The <code>nng_pub0_open()</code> function creates a <a href="nng_pub.7.html"><em>pub</em></a> version 0
 <a href="nng_socket.5.html">socket</a> and returns it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_pub0_open_raw()</code> function creates a <a href="nng_pub.7.html"><em>pub</em></a> version 0
+<a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_pull.7.html b/man/tip/nng_pull.7.html
index acc5b926..94a6b989 100644
--- a/man/tip/nng_pull.7.html
+++ b/man/tip/nng_pull.7.html
@@ -530,9 +530,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pipeline0/pull.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pull0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pipeline0/pull.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -556,7 +554,7 @@ This property makes this pattern useful in load-balancing scenarios.</p>
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <a href="nng_pull_open.3.html"><code>nng_pull0_open()</code></a> call creates a puller socket.
+<p>The <a href="nng_pull_open.3.html"><code>nng_pull0_open()</code></a> functions create a puller socket.
 This socket may be used to receive messages, but is unable to send them.
 Attempts to send messages will result in <code>NNG_ENOTSUP</code>.</p>
 </div>
diff --git a/man/tip/nng_pull_open.3.html b/man/tip/nng_pull_open.3.html
index 4046888e..50f2b7bf 100644
--- a/man/tip/nng_pull_open.3.html
+++ b/man/tip/nng_pull_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pipeline0/pull.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_pull0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pull0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_pull0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -540,13 +542,18 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <p>The <code>nng_pull0_open()</code> function creates a <a href="nng_pull.7.html"><em>pull</em></a> version 0
 <a href="nng_socket.5.html">socket</a> and returns it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_pull0_open_raw()</code> function creates a <a href="nng_pull.7.html"><em>pull</em></a> version 0
+<a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_push.7.html b/man/tip/nng_push.7.html
index bb508a87..ee520b56 100644
--- a/man/tip/nng_push.7.html
+++ b/man/tip/nng_push.7.html
@@ -530,9 +530,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pipeline0/push.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_push0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pipeline0/push.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_push_open.3.html b/man/tip/nng_push_open.3.html
index 720a9662..a4089068 100644
--- a/man/tip/nng_push_open.3.html
+++ b/man/tip/nng_push_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pipeline0/push.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_push0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_push0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_push0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -540,13 +542,18 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <p>The <code>nng_push0_open()</code> function creates a <a href="nng_push.7.html"><em>push</em></a> version 0
 <a href="nng_socket.5.html">socket</a> and returns it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_push0_open_raw()</code> function creates a <a href="nng_push.7.html"><em>push</em></a> version 0
+<a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_random.3supp.html b/man/tip/nng_random.3supp.html
new file mode 100644
index 00000000..8397d80f
--- /dev/null
+++ b/man/tip/nng_random.3supp.html
@@ -0,0 +1,574 @@
+---
+version: tip
+layout: refman
+---
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+<style>
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+.listingblock .pygments .tok-ne { color: #D2413A; font-weight: bold } /* Name.Exception */
+.listingblock .pygments .tok-nf { color: #0000FF } /* Name.Function */
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+.listingblock .pygments .tok-nn { color: #0000FF; font-weight: bold } /* Name.Namespace */
+.listingblock .pygments .tok-nt { color: #008000; font-weight: bold } /* Name.Tag */
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+.listingblock .pygments .tok-mi { color: #666666 } /* Literal.Number.Integer */
+.listingblock .pygments .tok-mo { color: #666666 } /* Literal.Number.Oct */
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+.listingblock .pygments .tok-il { color: #666666 } /* Literal.Number.Integer.Long */
+</style>
+</head>
+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_random(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_random - get random number</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">uint32_t</span> <span class="tok-nf">nng_random</span><span class="tok-p">(</span><span class="tok-kt">void</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_random()</code> returns a random number.
+The value returned is suitable for use with cryptographic functions such as
+key generation.
+The value is obtained using platform specific cryptographically strong random
+number facilities when available.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>Random number.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_rep.7.html b/man/tip/nng_rep.7.html
index 35f66d97..95cafefa 100644
--- a/man/tip/nng_rep.7.html
+++ b/man/tip/nng_rep.7.html
@@ -511,6 +511,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <li><a href="#_description">DESCRIPTION</a>
 <ul class="sectlevel2">
 <li><a href="#_socket_operations">Socket Operations</a></li>
+<li><a href="#_context_operations">Context Operations</a></li>
 <li><a href="#_protocol_versions">Protocol Versions</a></li>
 </ul>
 </li>
@@ -528,9 +529,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/reqrep0/rep.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_rep0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/reqrep0/rep.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -567,20 +566,37 @@ a reply is received.
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <a href="nng_rep_open.3.html"><code>nng_rep0_open()</code></a> call creates a replier socket.
+<p>The <a href="nng_rep_open.3.html"><code>nng_rep0_open()</code></a> functions create a replier socket.
 This socket may be used to receive messages (requests), and then to send
-replies.
-Generally a reply can only be sent after receiving a request.
-(Attempts to receive a message will result in <code>NNG_ESTATE</code> if there
-is no outstanding request.)</p>
+replies.</p>
 </div>
 <div class="paragraph">
-<p>Attempts to send on a socket with no outstanding requests will result
-in <code>NNG_ESTATE</code>.</p>
+<p>Generally a reply can only be sent after receiving a request.</p>
 </div>
 <div class="paragraph">
-<p>Raw mode sockets (set with <a href="nng_options.5.html#NNG_OPT_RAW"><code>NNG_OPT_RAW</code></a>)
-ignore all these restrictions.</p>
+<p>Send operations will result in <code>NNG_ESTATE</code> if no corresponding request
+was previously received.</p>
+</div>
+<div class="paragraph">
+<p>Likewise, only one receive operation may be pending at a time.
+Any additional concurrent receive operations will result in <code>NNG_ESTATE</code>.</p>
+</div>
+<div class="paragraph">
+<p><a href="nng.7.html#raw_mode">Raw</a> mode sockets ignore all these restrictions.</p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_context_operations">Context Operations</h3>
+<div class="paragraph">
+<p>This protocol supports the creation of <a href="nng_ctx.5.html">contexts</a> for concurrent
+use cases using <a href="nng_ctx_open.3.html"><code>nng_ctx_open()</code></a>.</p>
+</div>
+<div class="paragraph">
+<p>Each context may have at most one outstanding request, and operates
+independently from the others.
+The restrictions for order of operations with sockets apply equally
+well for contexts, except that each context will be treated as if it were
+a separate socket.</p>
 </div>
 </div>
 <div class="sect2">
diff --git a/man/tip/nng_rep_open.3.html b/man/tip/nng_rep_open.3.html
index ba51bcf3..84c36b63 100644
--- a/man/tip/nng_rep_open.3.html
+++ b/man/tip/nng_rep_open.3.html
@@ -540,13 +540,18 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <p>The <code>nng_rep0_open()</code> function creates a <a href="nng_rep.7.html"><em>rep</em></a> version 0
 <a href="nng_socket.5.html">socket</a> and returns it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_rep0_open_raw()</code> function creates a <a href="nng_rep.7.html"><em>rep</em></a> version 0
+<a href="nng_socket.5.html">socket</a>
+in <a href="nng.7.html">raw</a> mode and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_req.7.html b/man/tip/nng_req.7.html
index a7a8f9a1..dee53ce8 100644
--- a/man/tip/nng_req.7.html
+++ b/man/tip/nng_req.7.html
@@ -511,6 +511,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <li><a href="#_description">DESCRIPTION</a>
 <ul class="sectlevel2">
 <li><a href="#_socket_operations">Socket Operations</a></li>
+<li><a href="#_context_operations">Context Operations</a></li>
 <li><a href="#_protocol_versions">Protocol Versions</a></li>
 <li><a href="#_protocol_options">Protocol Options</a></li>
 <li><a href="#_protocol_headers">Protocol Headers</a></li>
@@ -530,9 +531,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/reqrep0/req.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_req0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/reqrep0/req.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -604,14 +603,20 @@ can help provide a degree of load-balancing.
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <a href="nng_req_open.3.html"><code>nng_req0_open()</code></a> call creates a requester socket.
-This socket may be used to send messages (requests),
-and then to receive replies.
-Generally a reply can only be received after sending a request.
+<p>The <a href="nng_req_open.3.html"><code>nng_req0_open()</code></a> functions create a requester socket.
+This socket may be used to send messages (requests), and then to receive replies.</p>
+</div>
+<div class="paragraph">
+<p>Generally a reply can only be received after sending a request.
 (Attempts to receive a message will result in <code>NNG_ESTATE</code> if there is no
 outstanding request.)</p>
 </div>
 <div class="paragraph">
+<p>Furthermore, only a single receive operation may be pending at a time.
+Attempts to post more receive operations concurrently will result in
+<code>NNG_ESTATE</code>.</p>
+</div>
+<div class="paragraph">
 <p>Requests may be canceled by sending a different request.
 This will cause the requester to discard any reply from the earlier request,
 but it will not stop a replier
@@ -619,12 +624,23 @@ from processing a request it has already received or terminate a request
 that has already been placed on the wire.</p>
 </div>
 <div class="paragraph">
-<p>Attempts to receive on a socket with no outstanding requests will result
-in <code>NNG_ESTATE</code>.</p>
+<p><a href="nng.7.html#raw_mode">Raw</a> mode sockets ignore all these restrictions.</p>
+</div>
+</div>
+<div class="sect2">
+<h3 id="_context_operations">Context Operations</h3>
+<div class="paragraph">
+<p>This protocol supports the creation of <a href="nng_ctx.5.html">contexts</a> for concurrent
+use cases using <a href="nng_ctx_open.3.html"><code>nng_ctx_open()</code></a>.
+The <code>NNG_OPT_REQ_RESENDTIME</code> value may be configured differently
+on contexts created this way.</p>
 </div>
 <div class="paragraph">
-<p>Raw mode sockets (set with <a href="nng_options.5.html#NNG_OPT_RAW"><code>NNG_OPT_RAW</code></a>)
-ignore all these restrictions.</p>
+<p>Each context may have at most one outstanding request, and operates
+independently from the others.
+The restrictions for order of operations with sockets apply equally
+well for contexts, except that each context will be treated as if it were
+a separate socket.</p>
 </div>
 </div>
 <div class="sect2">
@@ -704,8 +720,10 @@ request ID it originally used for the request.</p>
 <h2 id="_see_also">SEE ALSO</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p><a href="nng_device.3.html">nng_device(3)</a>,
+<p><a href="nng_ctx_open.3.html">nng_ctx_open(3)</a>,
+<a href="nng_device.3.html">nng_device(3)</a>,
 <a href="nng_req_open.3.html">nng_req_open(3)</a>,
+<a href="nng_ctx.5.html">nng_ctx(5)</a>,
 <a href="nng.7.html">nng(7)</a>,
 <a href="nng_rep.7.html">nng_rep(7)</a></p>
 </div>
diff --git a/man/tip/nng_req_open.3.html b/man/tip/nng_req_open.3.html
index fcdd1c5d..b9989eec 100644
--- a/man/tip/nng_req_open.3.html
+++ b/man/tip/nng_req_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/reqrep0/req.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_req0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_req0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_req0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -540,13 +542,19 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <p>The <code>nng_req0_open()</code> function creates a <a href="nng_req.7.html"><em>req</em></a> version 0
 <a href="nng_socket.5.html">socket</a> and returns it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_req0_open_raw()</code> function creates a <a href="nng_req.7.html"><em>req</em></a> version 0
+<a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode
+and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
@@ -571,7 +579,8 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <h2 id="_see_also">SEE ALSO</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p><a href="nng_socket.5.html">nng_socket(5)</a>,
+<p><a href="nng_options.5.html">nng_options(5)</a>,
+<a href="nng_socket.5.html">nng_socket(5)</a>,
 <a href="nng_rep.7.html">nng_rep(7)</a>,
 <a href="nng_req.7.html">nng_req(7)</a>,
 <a href="nng.7.html">nng(7)</a></p>
diff --git a/man/tip/nng_respondent.7.html b/man/tip/nng_respondent.7.html
index 63000d52..b51fb28c 100644
--- a/man/tip/nng_respondent.7.html
+++ b/man/tip/nng_respondent.7.html
@@ -530,9 +530,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="sectionbody">
 <div class="listingblock">
 <div class="content">
-<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/survey0/respond.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_respondent0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/survey0/respond.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -570,7 +568,7 @@ discovery problems.
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <a href="nng_respondent_open.3.html"><code>nng_respondent0_open()</code></a> call creates a
+<p>The <a href="nng_respondent_open.3.html"><code>nng_respondent0_open()</code></a> functions create a
 respondent socket.
 This socket may be used to receive messages, and then to send replies.
 A reply can only be sent after receiving a survey, and generally the
diff --git a/man/tip/nng_respondent_open.3.html b/man/tip/nng_respondent_open.3.html
index b9f893b7..86c25a56 100644
--- a/man/tip/nng_respondent_open.3.html
+++ b/man/tip/nng_respondent_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/survey0/respond.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_respondent0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_respondent0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_respondent0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -542,13 +544,19 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 version 0 <a href="nng_socket.5.html">socket</a> and returns it at the location
 pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_respondent0_open_raw()</code> function creates a
+<a href="nng_respondent.7.html"><em>respondent</em></a>
+version 0 <a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_setopt.3.html b/man/tip/nng_setopt.3.html
index 3977fe83..3a263673 100644
--- a/man/tip/nng_setopt.3.html
+++ b/man/tip/nng_setopt.3.html
@@ -584,19 +584,6 @@ of this function.
 </tr>
 </table>
 </div>
-<div class="admonitionblock note">
-<table>
-<tr>
-<td class="icon">
-<i class="fa icon-note" title="Note"></i>
-</td>
-<td class="content">
-No validation that the option is actually of the associated
-type is performed, so the caller must take care to use the <strong>correct</strong> typed form.
-</td>
-</tr>
-</table>
-</div>
 <div class="sect3">
 <h4 id="_code_nng_setopt_code"><code>nng_setopt()</code></h4>
 <div class="paragraph">
diff --git a/man/tip/nng_strdup.3.html b/man/tip/nng_strdup.3.html
new file mode 100644
index 00000000..69437390
--- /dev/null
+++ b/man/tip/nng_strdup.3.html
@@ -0,0 +1,597 @@
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+layout: refman
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_strdup(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_strdup - duplicate string</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-nf">nng_strdup</span><span class="tok-p">(</span><span class="tok-k">const</span> <span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">src</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_strdup()</code> duplicates the string <em>src</em> and returns it.</p>
+</div>
+<div class="paragraph">
+<p>This is logically equiavlent to using <a href="nng_alloc.3.html"><code>nng_alloc()</code></a>
+to allocate a region of memory of <code>strlen(s) + 1</code> bytes, and then
+using <code>strcpy()</code> to copy the string into the destination before
+returning it.</p>
+</div>
+<div class="paragraph">
+<p>The returned string should be deallocated with
+<a href="nng_strfree.3.html"><code>nng_strfree()</code></a>, or may be deallocated using the
+<a href="nng_free.3.html"><code>nng_free()</code></a> using the length of the returned string plus
+one (for the <code>NUL</code> terminating byte).</p>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+Do not use the system <code>free()</code> or similar functions to deallocate
+the string, since those may use a different memory arena!
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This function returns the new string on success, and <code>NULL</code> on failure.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>No errors are returned, but a <code>NULL</code> return value should be
+treated the same as <code>NNG_ENOMEM</code>.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_alloc.3.html">nng_alloc(3)</a>,
+<a href="nng_free.3.html">nng_free(3)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_strfree.3.html b/man/tip/nng_strfree.3.html
new file mode 100644
index 00000000..248f9c9c
--- /dev/null
+++ b/man/tip/nng_strfree.3.html
@@ -0,0 +1,607 @@
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+</head>
+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_strfree(3) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_free - free memory</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_strfree</span><span class="tok-p">(</span><span class="tok-kt">char</span> <span class="tok-o">*</span><span class="tok-n">str</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_strfree()</code> function deallocates the string <em>str</em>.
+This is equivalent to using <a href="nng_free.3.html"><code>nng_free()</code></a> with
+the length of <em>str</em> plus one (for the <code>NUL</code> terminating byte) as
+the size.</p>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+This should only be used with strings that were allocated
+by <a href="nng_strdup.3.html"><code>nng_strdup()</code></a> or
+<a href="nng_alloc.3.html"><code>nng_alloc()</code></a>.
+In all cases, the allocation size of the string must be the same
+as <code>strlen(<em>str</em>) + 1</code>.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+Consequently, if the a string created with
+<a href="nng_strdup.3.html"><code>nng_strdup()</code></a> is modified to be shorter, then
+it is incorrect to call this function.
+(The <a href="nng_free.3.html"><code>nng_free()</code></a> function can be used instead in that
+case, using the length of the original string plus one for the size.)
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_alloc.3.html">nng_alloc(3)</a>,
+<a href="nng_free.3.html">nng_free(3)</a>,
+<a href="nng_strdup.3.html">nng_strdup(3)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_sub.7.html b/man/tip/nng_sub.7.html
index 5eb5e6bd..7e8cc9a2 100644
--- a/man/tip/nng_sub.7.html
+++ b/man/tip/nng_sub.7.html
@@ -531,9 +531,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
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 <div class="content">
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
-<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pubsub0/sub.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_sub0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pubsub0/sub.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -575,7 +573,7 @@ Applications should construct their messages accordingly.</p>
 <div class="sect2">
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
-<p>The <a href="nng_sub_open.3.html"><code>nng_sub0_open()</code></a> call creates a subscriber socket.
+<p>The <a href="nng_sub_open.3.html"><code>nng_sub0_open()</code></a> functions create a subscriber socket.
 This socket may be used to receive messages, but is unable to send them.
 Attempts to send messages will result in <code>NNG_ENOTSUP</code>.</p>
 </div>
diff --git a/man/tip/nng_sub_open.3.html b/man/tip/nng_sub_open.3.html
index 8d1c9663..036c3444 100644
--- a/man/tip/nng_sub_open.3.html
+++ b/man/tip/nng_sub_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/pubsub0/sub.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_sub0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_sub0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_sub0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -540,13 +542,18 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <p>The <code>nng_sub0_open()</code> function creates a <a href="nng_sub.7.html"><em>sub</em></a> version 0
 <a href="nng_socket.5.html">socket</a> and returns it at the location pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_sub0_open()</code> function creates a <a href="nng_sub.7.html"><em>sub</em></a> version 0
+<a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_surveyor.7.html b/man/tip/nng_surveyor.7.html
index a7e6777c..8f07fb6c 100644
--- a/man/tip/nng_surveyor.7.html
+++ b/man/tip/nng_surveyor.7.html
@@ -531,9 +531,7 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <div class="listingblock">
 <div class="content">
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
-<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/survey0/survey.h&gt;</span><span class="tok-cp"></span>
-
-<span class="tok-kt">int</span> <span class="tok-nf">nng_surveyor0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/survey0/survey.h&gt;</span><span class="tok-cp"></span></code></pre>
 </div>
 </div>
 </div>
@@ -572,7 +570,7 @@ service discovery problems.
 <h3 id="_socket_operations">Socket Operations</h3>
 <div class="paragraph">
 <p>The <a href="nng_surveyor_open.3.html"><code>nng_surveyor0_open()</code></a>
-call creates a surveyor socket.
+functions create a surveyor socket.
 This socket may be used to send messages (surveys), and then to receive replies.
 A reply can only be received after sending a survey.
 A surveyor can normally expect to receive at most one reply from each responder.
@@ -591,8 +589,7 @@ cancel the prior one, and any responses from respondents from the prior
 survey that arrive after this will be discarded.</p>
 </div>
 <div class="paragraph">
-<p>Raw mode sockets (set with <a href="nng_options.5.html#NNG_OPT_RAW"><code>NNG_OPT_RAW</code></a>)
-ignore all these restrictions.</p>
+<p><a href="nng.7.html#raw_mode">Raw</a> mode sockets ignore all these restrictions.</p>
 </div>
 </div>
 <div class="sect2">
diff --git a/man/tip/nng_surveyor_open.3.html b/man/tip/nng_surveyor_open.3.html
index dea6f37b..ad84842d 100644
--- a/man/tip/nng_surveyor_open.3.html
+++ b/man/tip/nng_surveyor_open.3.html
@@ -528,7 +528,9 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 <pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
 <span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/protocol/survey0/survey.h&gt;</span><span class="tok-cp"></span>
 
-<span class="tok-kt">int</span> <span class="tok-nf">nng_surveyor0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
+<span class="tok-kt">int</span> <span class="tok-nf">nng_surveyor0_open</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_surveyor0_open_raw</span><span class="tok-p">(</span><span class="tok-n">nng_socket</span> <span class="tok-o">*</span><span class="tok-n">s</span><span class="tok-p">);</span></code></pre>
 </div>
 </div>
 </div>
@@ -541,13 +543,18 @@ body.book #toc,body.book #preamble,body.book h1.sect0,body.book .sect1>h2{page-b
 version 0 <a href="nng_socket.5.html">socket</a> and returns it at the location
 pointed to by <em>s</em>.</p>
 </div>
+<div class="paragraph">
+<p>The <code>nng_surveyor0_open_raw()</code> function creates a <a href="nng_surveyor.7.html"><em>surveyor</em></a>
+version 0 <a href="nng_socket.5.html">socket</a> in
+<a href="nng.7.html#raw_mode">raw</a> mode and returns it at the location pointed to by <em>s</em>.</p>
+</div>
 </div>
 </div>
 <div class="sect1">
 <h2 id="_return_values">RETURN VALUES</h2>
 <div class="sectionbody">
 <div class="paragraph">
-<p>This function returns 0 on success, and non-zero otherwise.</p>
+<p>These functions return 0 on success, and non-zero otherwise.</p>
 </div>
 </div>
 </div>
diff --git a/man/tip/nng_thread_create.3supp.html b/man/tip/nng_thread_create.3supp.html
new file mode 100644
index 00000000..3f3d8987
--- /dev/null
+++ b/man/tip/nng_thread_create.3supp.html
@@ -0,0 +1,663 @@
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+---
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+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_thread_create(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_thread_create - create thread</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-k">typedef</span> <span class="tok-k">struct</span> <span class="tok-n">nng_thread</span> <span class="tok-n">nng_thread</span><span class="tok-p">;</span>
+
+<span class="tok-kt">int</span> <span class="tok-nf">nng_thread_create</span><span class="tok-p">(</span><span class="tok-n">nng_thread</span> <span class="tok-o">**</span><span class="tok-n">thrp</span><span class="tok-p">,</span> <span class="tok-kt">void</span> <span class="tok-p">(</span><span class="tok-o">*</span><span class="tok-n">func</span><span class="tok-p">)(</span><span class="tok-kt">void</span> <span class="tok-o">*</span><span class="tok-p">),</span> <span class="tok-kt">void</span> <span class="tok-o">*</span><span class="tok-n">arg</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_thread_create()</code> function creates a single thread of execution,
+running <em>func</em> with the argument <em>arg</em>.
+The thread is started immediately.
+A pointer to the thread object is returned in <em>thrp</em>.</p>
+</div>
+<div class="paragraph">
+<p>The intention of this program is to facilitate writing parallel programs.
+Threads created by this program will be based upon the underlying
+threading mechanism of the system that <em>NNG</em> is running on.
+This may include use of so-called &#8220;green threads&#8221; or coroutines.</p>
+</div>
+<div class="paragraph">
+<p>Using threads created by this function can make it easy to write
+programs that use simple sequential execution, using functions in the
+<em>NNG</em> suite that would otherwise normally &#8220;block&#8221;.</p>
+</div>
+<div class="paragraph">
+<p>When the thread is no longer needed, the
+<a href="nng_thread_destroy.3supp.html"><code>nng_thread_destroy()</code></a>
+function should be used to reap it.
+(This function will block waiting for <em>func</em> to return.)</p>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+Thread objects created by this function may not be &#8220;real&#8221;
+threads capable of performing blocking I/O operations using normal blocking
+system calls.
+If use of blocking system calls is required (not including APIs provided
+by the <em>NNG</em> library itself of course), then real OS-specific threads
+should be created instead (such as with <code>pthread_create()</code> or similar
+functions.)
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+Thread objects created by this function cannot be passed
+to any system threading functions.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+The system may impose limits on the number of threads that can be
+created.
+Typically applications should not create more than a few dozen of these.
+If greater concurrency or scalability is needed, consider instead using
+an asynchronous model using <a href="nng_aio.5.html"><code>nng_aio</code></a> structures.
+</td>
+</tr>
+</table>
+</div>
+<div class="admonitionblock tip">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-tip" title="Tip"></i>
+</td>
+<td class="content">
+Threads can be synchronized using
+<a href="nng_mtx_alloc.3supp.html">mutexes</a> and
+<a href="nng_cv_alloc.3supp.html">condition variables</a>.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>This function returns 0 on success, and non-zero otherwise.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="dlist">
+<dl>
+<dt class="hdlist1"><code>NNG_ENOMEM</code></dt>
+<dd>
+<p>Insufficient free memory exists.</p>
+</dd>
+</dl>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_strerror.3.html">nng_strerror(3)</a>,
+<a href="nng_cv_alloc.3supp.html">nng_cv_alloc(3supp)</a>,
+<a href="nng_mtx_alloc.3supp.html">nng_mtx_alloc(3supp)</a>,
+<a href="nng_thread_destroy.3supp.html">nng_thread_destroy(3supp)</a>,
+<a href="nng_aio.5.html">nng_aio(5)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/man/tip/nng_thread_destroy.3supp.html b/man/tip/nng_thread_destroy.3supp.html
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+</head>
+<body class="manpage toc2 toc-left">
+<div id="header">
+<h1>nng_thread_destroy(3supp) Manual Page</h1>
+<div id="toc" class="toc2">
+<div id="toctitle">Table of Contents</div>
+<ul class="sectlevel1">
+<li><a href="#_synopsis">SYNOPSIS</a></li>
+<li><a href="#_description">DESCRIPTION</a></li>
+<li><a href="#_return_values">RETURN VALUES</a></li>
+<li><a href="#_errors">ERRORS</a></li>
+<li><a href="#_see_also">SEE ALSO</a></li>
+</ul>
+</div>
+<h2>NAME</h2>
+<div class="sectionbody">
+<p>nng_thread_destroy - reap thread</p>
+</div>
+</div>
+<div id="content">
+<div class="sect1">
+<h2 id="_synopsis">SYNOPSIS</h2>
+<div class="sectionbody">
+<div class="listingblock">
+<div class="content">
+<pre class="pygments highlight"><code data-lang="c"><span></span><span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/nng.h&gt;</span><span class="tok-cp"></span>
+<span class="tok-cp">#include</span> <span class="tok-cpf">&lt;nng/supplemental/util/platform.h&gt;</span><span class="tok-cp"></span>
+
+<span class="tok-kt">void</span> <span class="tok-nf">nng_thread_destroy</span><span class="tok-p">(</span><span class="tok-n">nng_thread</span> <span class="tok-o">*</span><span class="tok-kr">thread</span><span class="tok-p">);</span></code></pre>
+</div>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_description">DESCRIPTION</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>The <code>nng_thread_destroy()</code> function reaps the <em>thread</em>.
+It waits for the thread function to return, and then deallocates
+the resources for the thread.</p>
+</div>
+<div class="admonitionblock important">
+<table>
+<tr>
+<td class="icon">
+<i class="fa icon-important" title="Important"></i>
+</td>
+<td class="content">
+Do not call this function from the thread function itself,
+or a deadlock will occur.
+</td>
+</tr>
+</table>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_return_values">RETURN VALUES</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_errors">ERRORS</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p>None.</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_see_also">SEE ALSO</h2>
+<div class="sectionbody">
+<div class="paragraph">
+<p><a href="nng_thread_create.3supp.html">nng_thread_create(3supp)</a>,
+<a href="nng.7.html">nng(7)</a></p>
+</div>
+</div>
+</div>
+</div>
+</body>
+</html>