1 files changed, 123 insertions, 0 deletions
diff --git a/src/rep.cpp b/src/rep.cpp
new file mode 100644
index 0000000..a45e635
--- /dev/null
+++ b/src/rep.cpp
@@ -0,0 +1,123 @@
+/*
+    Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "rep.hpp"
+#include "err.hpp"
+#include "msg.hpp"
+
+zmq::rep_t::rep_t (class ctx_t *parent_, uint32_t tid_, int sid_) :
+    router_t (parent_, tid_, sid_),
+    sending_reply (false),
+    request_begins (true)
+{
+    options.type = ZMQ_REP;
+}
+
+zmq::rep_t::~rep_t ()
+{
+}
+
+int zmq::rep_t::xsend (msg_t *msg_)
+{
+    //  If we are in the middle of receiving a request, we cannot send reply.
+    if (!sending_reply) {
+        errno = EFSM;
+        return -1;
+    }
+
+    bool more = msg_->flags () & msg_t::more ? true : false;
+
+    //  Push message to the reply pipe.
+    int rc = router_t::xsend (msg_);
+    if (rc != 0)
+        return rc;
+
+    //  If the reply is complete flip the FSM back to request receiving state.
+    if (!more)
+        sending_reply = false;
+
+    return 0;
+}
+
+int zmq::rep_t::xrecv (msg_t *msg_)
+{
+    //  If we are in middle of sending a reply, we cannot receive next request.
+    if (sending_reply) {
+        errno = EFSM;
+        return -1;
+    }
+
+    //  First thing to do when receiving a request is to copy all the labels
+    //  to the reply pipe.
+    if (request_begins) {
+        while (true) {
+            int rc = router_t::xrecv (msg_);
+            if (rc != 0)
+                return rc;
+
+            if ((msg_->flags () & msg_t::more)) {
+                //  Empty message part delimits the traceback stack.
+                bool bottom = (msg_->size () == 0);
+
+                //  Push it to the reply pipe.
+                rc = router_t::xsend (msg_);
+                errno_assert (rc == 0);
+
+                if (bottom)
+                    break;
+            }
+            else {
+                //  If the traceback stack is malformed, discard anything
+                //  already sent to pipe (we're at end of invalid message).
+                rc = router_t::rollback ();
+                errno_assert (rc == 0);
+            }
+        }
+        request_begins = false;
+    }
+
+    //  Get next message part to return to the user.
+    int rc = router_t::xrecv (msg_);
+    if (rc != 0)
+       return rc;
+
+    //  If whole request is read, flip the FSM to reply-sending state.
+    if (!(msg_->flags () & msg_t::more)) {
+        sending_reply = true;
+        request_begins = true;
+    }
+
+    return 0;
+}
+
+bool zmq::rep_t::xhas_in ()
+{
+    if (sending_reply)
+        return false;
+
+    return router_t::xhas_in ();
+}
+
+bool zmq::rep_t::xhas_out ()
+{
+    if (!sending_reply)
+        return false;
+
+    return router_t::xhas_out ();
+}