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+/*
+ Copyright (c) 2007-2012 iMatix Corporation
+ Copyright (c) 2009-2011 250bpm s.r.o.
+ Copyright (c) 2011 VMware, Inc.
+ Copyright (c) 2007-2011 Other 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/>.
+*/
+
+#ifndef __ZMQ_REQ_HPP_INCLUDED__
+#define __ZMQ_REQ_HPP_INCLUDED__
+
+#include "dealer.hpp"
+#include "stdint.hpp"
+
+namespace zmq
+{
+
+ class ctx_t;
+ class msg_t;
+ class io_thread_t;
+ class socket_base_t;
+
+ class req_t : public dealer_t
+ {
+ public:
+
+ req_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
+ ~req_t ();
+
+ // Overloads of functions from socket_base_t.
+ int xsend (zmq::msg_t *msg_, int flags_);
+ int xrecv (zmq::msg_t *msg_, int flags_);
+ bool xhas_in ();
+ bool xhas_out ();
+
+ private:
+
+ // If true, request was already sent and reply wasn't received yet or
+ // was raceived partially.
+ bool receiving_reply;
+
+ // If true, we are starting to send/recv a message. The first part
+ // of the message must be empty message part (backtrace stack bottom).
+ bool message_begins;
+
+ req_t (const req_t&);
+ const req_t &operator = (const req_t&);
+ };
+
+ class req_session_t : public dealer_session_t
+ {
+ public:
+
+ req_session_t (zmq::io_thread_t *io_thread_, bool connect_,
+ zmq::socket_base_t *socket_, const options_t &options_,
+ const address_t *addr_);
+ ~req_session_t ();
+
+ // Overloads of the functions from session_base_t.
+ int push_msg (msg_t *msg_);
+ void reset ();
+
+ private:
+
+ enum {
+ identity,
+ bottom,
+ body
+ } state;
+
+ req_session_t (const req_session_t&);
+ const req_session_t &operator = (const req_session_t&);
+ };
+
+}
+
+#endif