non-immediate_connect functionality removed

It was used only by ROUTER socket. After its removal it became
obsolete.
Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

src/options.cpp

@@ -40,7 +40,6 @@ zmq::options_t::options_t () :
     maxmsgsize (-1),
     rcvtimeo (-1),
     sndtimeo (-1),
-    immediate_connect (true),
     delay_on_close (true),
     delay_on_disconnect (true),
     filter (false)

src/options.hpp

@@ -79,12 +79,6 @@ namespace zmq
         int rcvtimeo;
         int sndtimeo;
 
-        //  If true, when connecting, pipes are created immediately without
-        //  waiting for the connection to be established. That way the socket
-        //  is not aware of the peer's identity, however, it is able to send
-        //  messages straight away.
-        bool immediate_connect;
-
         //  If true, session reads all the pending messages from the pipe and
         //  sends them to the network when socket is closed.
         bool delay_on_close;

src/socket_base.cpp

@@ -445,17 +445,12 @@ int zmq::socket_base_t::connect (const char *addr_)
         io_thread, this, options, protocol.c_str (), address.c_str ());
     alloc_assert (session);
 
-    //  If 'immediate connect' feature is required, we'll create the pipes
-    //  to the session straight away. Otherwise, they'll be created by the
-    //  session once the connection is established.
-    if (options.immediate_connect) {
-
     //  Create a bi-directional pipe.
     object_t *parents [2] = {this, session};
     pipe_t *pipes [2] = {NULL, NULL};
     int hwms [2] = {options.sndhwm, options.rcvhwm};
     bool delays [2] = {options.delay_on_disconnect, options.delay_on_close};
-        int rc = pipepair (parents, pipes, hwms, delays);
+    rc = pipepair (parents, pipes, hwms, delays);
     errno_assert (rc == 0);
 
     //  Attach local end of the pipe to the socket object.
@@ -463,7 +458,6 @@ int zmq::socket_base_t::connect (const char *addr_)
 
     //  Attach remote end of the pipe to the session object later on.
     session->attach_pipe (pipes [1]);
-    }
 
     //  Activate the session. Make it a child of this socket.
     launch_child (session);