Unbind socket with real endpoint when binding by wild-card * address

doc/zmq_ipc.txt

@@ -35,7 +35,7 @@ operating system namespace used by the 'ipc' implementation, and must fulfill
 any restrictions placed by the operating system on the format and length of a
 'pathname'.
 
-When the address is `*`, _zmq_bind()_ shall generate a unique temporary
+When the address is wild-card `*`, _zmq_bind()_ shall generate a unique temporary
 pathname. The caller should retrieve this pathname using the ZMQ_LAST_ENDPOINT
 socket option. See linkzmq:zmq_getsockopt[3] for details.
 
@@ -57,6 +57,12 @@ NOTE: IPC pathnames have a maximum size that depends on the operating system.
 On Linux, the maximum is 113 characters including the "ipc://" prefix (107
 characters for the real path name).
 
+Unbinding wild-card address from a socket
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+When wild-card `*` 'endpoint' was used in _zmq_bind()_, the caller should use
+real 'endpoind' obtained from the ZMQ_LAST_ENDPOINT socket option to unbind
+this 'endpoint' from a socket using _zmq_unbind()_.
+
 Connecting a socket
 ~~~~~~~~~~~~~~~~~~~
 When connecting a 'socket' to a peer address using _zmq_connect()_ with the

doc/zmq_tcp.txt

@@ -46,6 +46,11 @@ When using ephemeral ports, the caller should retrieve the actual assigned
 port using the ZMQ_LAST_ENDPOINT socket option. See linkzmq:zmq_getsockopt[3]
 for details.
 
+Unbinding wild-card addres from a socket
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+When wild-card `*` 'endpoint' was used in _zmq_bind()_, the caller should use
+real 'endpoind' obtained from the ZMQ_LAST_ENDPOINT socket option to unbind 
+this 'endpoint' from a socket using _zmq_unbind()_.
 
 Connecting a socket
 ~~~~~~~~~~~~~~~~~~~

src/socket_base.cpp

@@ -401,7 +401,7 @@ int zmq::socket_base_t::bind (const char *addr_)
         // Save last endpoint URI
         listener->get_address (last_endpoint);
 
-        add_endpoint (addr_, (own_t *) listener, NULL);
+        add_endpoint (last_endpoint.c_str (), (own_t *) listener, NULL);
         return 0;
     }
 
@@ -420,7 +420,7 @@ int zmq::socket_base_t::bind (const char *addr_)
         // Save last endpoint URI
         listener->get_address (last_endpoint);
 
-        add_endpoint (addr_, (own_t *) listener, NULL);
+        add_endpoint (last_endpoint.c_str (), (own_t *) listener, NULL);
         return 0;
     }
 #endif