NNG_OPT_BOUND_PORT replaces NNG_OPT_TCP/UDP_BOUND_PORT.

This is easier and agnostic about the underlying L3 protocol.
We plan to remove direct NNG_OPT_LOCADDR support from listeners
(and probably both NNG_OPT_LOCADDR and NNG_OPT_REMADDR have numbered
days left in their lifetime.  They will be replaced with more direct
typed access functions as has been done for pipes already.)

While here fixed some include for IWYU in the POSIX platform.

3 files changed, 12 insertions, 11 deletions

diff --git a/docs/man/nng_tcp_options.5.adoc b/docs/man/nng_tcp_options.5.adoc
index 37228b82..c6063d8a 100644
--- a/docs/man/nng_tcp_options.5.adoc
+++ b/docs/man/nng_tcp_options.5.adoc
@@ -22,7 +22,7 @@ nng_tcp_options - TCP-specific options
 
 #define NNG_OPT_TCP_NODELAY    "tcp-nodelay"
 #define NNG_OPT_TCP_KEEPALIVE  "tcp-keepalive"
-#define NNG_OPT_TCP_BOUND_PORT "tcp-bound-port"
+#define NNG_OPT_BOUND_PORT "bound-port"
 ----
 
 == DESCRIPTION
@@ -89,10 +89,10 @@ First, it can be used to detect dead peers on an otherwise quiescent network.
 Second, it can be used to keep connection table entries in NAT and other
 middleware from being expiring due to lack of activity.
 
-[[NNG_OPT_TCP_BOUND_PORT]]
-((`NNG_OPT_TCP_BOUND_PORT`))::
+[[NNG_OPT_BOUND_PORT]]
+((`NNG_OPT_BOUND_PORT`))::
 (`int`)
-This option is available on listeners, after the listern has bound to
+This option is available on listeners, after the listener has bound to
 a port, and provides the port bound to in native byte order.
 This is most useful when using a listener with an ephemeral port
 (configured by using port 0 at configuration time), as it allows
diff --git a/docs/ref/migrate/nng1.md b/docs/ref/migrate/nng1.md
index df062efd..52b786cc 100644
--- a/docs/ref/migrate/nng1.md
+++ b/docs/ref/migrate/nng1.md
@@ -274,6 +274,9 @@ The latter option is a hint for transports and intended to facilitate early
 detection (and possibly avoidance of extra allocations) of oversize messages,
 before bringing them into the socket itself.
 
+The `NNG_OPT_TCP_BOUND_PORT` port is renamed to just [`NNG_OPT_BOUND_PORT`],
+and is available for listeners using transports based on either TCP or UDP.
+
 ## Socket Options
 
 The `NNG_OPT_PROTO`, `NNG_OPT_PROTONAME`, `NNG_OPT_PEER`, and `NNG_OPT_PEERNAME` options
diff --git a/docs/ref/tran/udp.md b/docs/ref/tran/udp.md
index 0b83b542..920d5bcd 100644
--- a/docs/ref/tran/udp.md
+++ b/docs/ref/tran/udp.md
@@ -66,13 +66,11 @@ the actual structure is either of type
 The following transport options are supported by this transport,
 where supported by the underlying platform.
 
-| Option                                                        | Type             | Description                                                                                                                      |
-| ------------------------------------------------------------- | ---------------- | -------------------------------------------------------------------------------------------------------------------------------- |
-| [`NNG_OPT_LOCADDR`]                                           | [`nng_sockaddr`] | The locally bound address, will be either [`nng_sockaddr_in`] or [`nng_sockaddr_in6`].                                           |
-| [`NNG_OPT_REMADDR`]                                           | [`nng_sockaddr`] | The remote peer address, will be either [`nng_sockaddr_in`] or [`nng_sockaddr_in6`]. Only valid for [pipe] and [dialer] objects. |
-| [`NNG_OPT_RECVMAXSZ`]                                         | `size_t`         | Maximum size of incoming messages, will be limited to at most 65000.                                                             |
-| `NNG_OPT_UDP_COPY_MAX`<a name="NNG_OPT_UDP_COPY_MAX"></a>     | `size_t`         | Threshold above which received messages are "loaned" up, rather than a new message being allocated and copied into.              |
-| `NNG_OPT_UDP_BOUND_PORT`<a name="NNG_OPT_UDP_BOUND_PORT"></a> | `int`            | The locally bound UDP port number (1-65535), read-only for [listener] objects only.                                              |
+| Option                                                    | Type     | Description                                                                                                         |
+| --------------------------------------------------------- | -------- | ------------------------------------------------------------------------------------------------------------------- |
+| [`NNG_OPT_RECVMAXSZ`]                                     | `size_t` | Maximum size of incoming messages, will be limited to at most 65000.                                                |
+| `NNG_OPT_UDP_COPY_MAX`<a name="NNG_OPT_UDP_COPY_MAX"></a> | `size_t` | Threshold above which received messages are "loaned" up, rather than a new message being allocated and copied into. |
+| `NNG_OPT_BOUND_PORT`<a name="NNG_OPT_BOUND_PORT"></a>     | `int`    | The locally bound UDP port number (1-65535), read-only for [listener] objects only.                                 |
 
 ## Maximum Message Size