mirror of
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111 lines
3.1 KiB
C++
111 lines
3.1 KiB
C++
/*
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Copyright (c) 2007-2014 Contributors as noted in the AUTHORS file
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This file is part of 0MQ.
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0MQ is free software; you can redistribute it and/or modify it under
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the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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0MQ is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ZMQ_REQ_HPP_INCLUDED__
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#define __ZMQ_REQ_HPP_INCLUDED__
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#include "dealer.hpp"
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#include "stdint.hpp"
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namespace zmq
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{
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class ctx_t;
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class msg_t;
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class io_thread_t;
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class socket_base_t;
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class req_t : public dealer_t
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{
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public:
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req_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
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~req_t ();
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// Overrides of functions from socket_base_t.
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int xsend (zmq::msg_t *msg_);
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int xrecv (zmq::msg_t *msg_);
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bool xhas_in ();
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bool xhas_out ();
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int xsetsockopt (int option_, const void *optval_, size_t optvallen_);
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void xpipe_terminated (zmq::pipe_t *pipe_);
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protected:
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// Receive only from the pipe the request was sent to, discarding
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// frames from other pipes.
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int recv_reply_pipe (zmq::msg_t *msg_);
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private:
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// If true, request was already sent and reply wasn't received yet or
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// was raceived partially.
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bool receiving_reply;
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// If true, we are starting to send/recv a message. The first part
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// of the message must be empty message part (backtrace stack bottom).
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bool message_begins;
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// The pipe the request was sent to and where the reply is expected.
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zmq::pipe_t *reply_pipe;
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// Whether request id frames shall be sent and expected.
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bool request_id_frames_enabled;
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// The current request id. It is incremented every time before a new
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// request is sent.
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uint32_t request_id;
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// If false, send() will reset its internal state and terminate the
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// reply_pipe's connection instead of failing if a previous request is
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// still pending.
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bool strict;
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req_t (const req_t&);
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const req_t &operator = (const req_t&);
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};
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class req_session_t : public session_base_t
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{
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public:
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req_session_t (zmq::io_thread_t *io_thread_, bool connect_,
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zmq::socket_base_t *socket_, const options_t &options_,
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address_t *addr_);
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~req_session_t ();
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// Overrides of the functions from session_base_t.
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int push_msg (msg_t *msg_);
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void reset ();
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private:
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enum {
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bottom,
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body
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} state;
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req_session_t (const req_session_t&);
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const req_session_t &operator = (const req_session_t&);
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};
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}
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#endif
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