1 files changed, 28 insertions, 34 deletions

diff --git a/src/req.cpp b/src/req.cpp
index 0832f60..3ba1ec0 100644
--- a/src/req.cpp
+++ b/src/req.cpp
@@ -1,5 +1,7 @@
 /*
-    Copyright (c) 2007-2011 iMatix Corporation
+    Copyright (c) 2009-2011 250bpm s.r.o.
+    Copyright (c) 2007-2009 iMatix Corporation
+    Copyright (c) 2011 VMware, Inc.
     Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file
 
     This file is part of 0MQ.
@@ -28,8 +30,7 @@
 zmq::req_t::req_t (class ctx_t *parent_, uint32_t tid_) :
     xreq_t (parent_, tid_),
     receiving_reply (false),
-    message_begins (true),
-    request_id (generate_random ())
+    message_begins (true)
 {
     options.type = ZMQ_REQ;
 }
@@ -49,19 +50,17 @@ int zmq::req_t::xsend (msg_t *msg_, int flags_)
 
     //  First part of the request is the request identity.
     if (message_begins) {
-        msg_t prefix;
-        int rc = prefix.init_size (4);
+        msg_t bottom;
+        int rc = bottom.init ();
         errno_assert (rc == 0);
-        prefix.set_flags (msg_t::label);
-        unsigned char *data = (unsigned char*) prefix.data ();
-        put_uint32 (data, request_id);
-        rc = xreq_t::xsend (&prefix, flags_);
+        bottom.set_flags (msg_t::more);
+        rc = xreq_t::xsend (&bottom, 0);
         if (rc != 0)
-            return rc;
+            return -1;
         message_begins = false;
     }
 
-    bool more = msg_->flags () & (msg_t::more | msg_t::label) ? true : false;
+    bool more = msg_->flags () & msg_t::more ? true : false;
 
     int rc = xreq_t::xsend (msg_, flags_);
     if (rc != 0)
@@ -91,25 +90,11 @@ int zmq::req_t::xrecv (msg_t *msg_, int flags_)
             return rc;
 
         // TODO: This should also close the connection with the peer!
-        if (unlikely (!(msg_->flags () & msg_t::label) || msg_->size () != 4)) {
+        if (unlikely (!(msg_->flags () & msg_t::more) || msg_->size () != 0)) {
             while (true) {
                 int rc = xreq_t::xrecv (msg_, flags_);
                 errno_assert (rc == 0);
-                if (!(msg_->flags () & (msg_t::label | msg_t::more)))
-                    break;
-            }
-            msg_->close ();
-            msg_->init ();
-            errno = EAGAIN;
-            return -1;
-        }
-        
-        unsigned char *data = (unsigned char*) msg_->data ();
-        if (unlikely (get_uint32 (data) != request_id)) {
-            while (true) {
-                int rc = xreq_t::xrecv (msg_, flags_);
-                errno_assert (rc == 0);
-                if (!(msg_->flags () & (msg_t::label | msg_t::more)))
+                if (!(msg_->flags () & msg_t::more))
                     break;
             }
             msg_->close ();
@@ -117,6 +102,7 @@ int zmq::req_t::xrecv (msg_t *msg_, int flags_)
             errno = EAGAIN;
             return -1;
         }
+
         message_begins = false;
     }
 
@@ -125,8 +111,7 @@ int zmq::req_t::xrecv (msg_t *msg_, int flags_)
         return rc;
 
     //  If the reply is fully received, flip the FSM into request-sending state.
-    if (!(msg_->flags () & (msg_t::more | msg_t::label))) {
-        request_id++;
+    if (!(msg_->flags () & msg_t::more)) {
         receiving_reply = false;
         message_begins = true;
     }
@@ -162,23 +147,32 @@ zmq::req_session_t::req_session_t (io_thread_t *io_thread_, bool connect_,
 
 zmq::req_session_t::~req_session_t ()
 {
+    state = options.recv_identity ? identity : bottom;
 }
 
 int zmq::req_session_t::write (msg_t *msg_)
 {
-    if (state == request_id) {
-        if (msg_->flags () == msg_t::label && msg_->size () == 4) {
+    switch (state) {
+    case bottom:
+        if (msg_->flags () == msg_t::more && msg_->size () == 0) {
             state = body;
             return xreq_session_t::write (msg_);
         }
-    }
-    else {
+        break;
+    case body:
         if (msg_->flags () == msg_t::more)
             return xreq_session_t::write (msg_);
         if (msg_->flags () == 0) {
-            state = request_id;
+            state = bottom;
+            return xreq_session_t::write (msg_);
+        }
+        break;
+    case identity:
+        if (msg_->flags () == 0) {
+            state = bottom;
             return xreq_session_t::write (msg_);
         }
+        break;
     }
     errno = EFAULT;
     return -1;