Added ZMQ_STREAM socket type

- designed for TCP clients and servers
- added HTTP client / server example in tests/test_stream.cpp
- same as ZMQ_ROUTER + ZMQ_ROUTER_RAW + ZMQ_ROUTER_MANDATORY
- includes b893ce set ZMQ_IDENTITY on outgoing connect
- deprecates ZMQ_ROUTER_RAW

src/router.cpp

@@ -33,7 +33,8 @@ zmq::router_t::router_t (class ctx_t *parent_, uint32_t tid_, int sid_) :
     more_out (false),
     next_peer_id (generate_random ()),
     mandatory (false),
-    raw_sock (false),
+    //  raw_sock functionality in ROUTER is deprecated
+    raw_sock (false),       
     probe_router (false)
 {
     options.type = ZMQ_ROUTER;
@@ -272,7 +273,6 @@ int zmq::router_t::xrecv (msg_t *msg_)
     //  It's possible that we receive peer's identity. That happens
     //  after reconnection. The current implementation assumes that
     //  the peer always uses the same identity.
-    //  TODO: handle the situation when the peer changes its identity.
     while (rc == 0 && msg_->is_identity ())
         rc = fq.recvpipe (msg_, &pipe);
 
@@ -372,9 +372,6 @@ bool zmq::router_t::identify_peer (pipe_t *pipe_)
         buf [0] = 0;
         put_uint32 (buf + 1, next_peer_id++);
         identity = blob_t (buf, sizeof buf);
-        unsigned int i = 0;  // Store identity to allow use of raw socket as client
-        for (blob_t::iterator it = identity.begin(); it != identity.end(); it++) options.identity[i++] = *it;
-        options.identity_size = i;
     }
     else {
         msg.init ();