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-rw-r--r--docs/man/nng_socket.5.adoc14
1 files changed, 14 insertions, 0 deletions
diff --git a/docs/man/nng_socket.5.adoc b/docs/man/nng_socket.5.adoc
index 4711495f..2d8d7256 100644
--- a/docs/man/nng_socket.5.adoc
+++ b/docs/man/nng_socket.5.adoc
@@ -44,12 +44,26 @@ Each `nng_socket` is created by a protocol-specific constructor, such as
When the socket is no longer needed, it can be closed with
<<nng_close.3#,`nng_close()`>>.
+[[NNG_SOCKET_INITIALIZER]]
+=== Initialization
+
+A socket may be initialized using the macro `NNG_SOCKET_INITIALIZER`
+before it is opened, to prevent confusion with valid open sockets.
+
+For example:
+
+[source, c]
+----
+nng_socket s = NNG_SOCKET_INITIALIZER;
+----
+
== SEE ALSO
<<libnng.3#,libnng(3)>>,
<<nng_close.3#,nng_close(3)>>,
<<nng_getopt.3#,nng_getopt(3)>>,
<<nng_setopt.3#,nng_setopt(3)>>,
+<<nng_socket_id.3#,nng_socket_id(3)>>,
<<nng_dialer.5#,nng_dialer(5)>>,
<<nng_listener.5#,nng_listener(5)>>,
<<nng_options.5#,nng_options(5)>>,