1/*
2 Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
3
4 This file is part of libzmq, the ZeroMQ core engine in C++.
5
6 libzmq is free software; you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License (LGPL) as published
8 by the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 As a special exception, the Contributors give you permission to link
12 this library with independent modules to produce an executable,
13 regardless of the license terms of these independent modules, and to
14 copy and distribute the resulting executable under terms of your choice,
15 provided that you also meet, for each linked independent module, the
16 terms and conditions of the license of that module. An independent
17 module is a module which is not derived from or based on this library.
18 If you modify this library, you must extend this exception to your
19 version of the library.
20
21 libzmq is distributed in the hope that it will be useful, but WITHOUT
22 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
23 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
24 License for more details.
25
26 You should have received a copy of the GNU Lesser General Public License
27 along with this program. If not, see <http://www.gnu.org/licenses/>.
28*/
29
30#ifndef __ZMQ_NULL_MECHANISM_HPP_INCLUDED__
31#define __ZMQ_NULL_MECHANISM_HPP_INCLUDED__
32
33#include "mechanism.hpp"
34#include "options.hpp"
35#include "zap_client.hpp"
36
37namespace zmq
38{
39class msg_t;
40class session_base_t;
41
42class null_mechanism_t : public zap_client_t
43{
44 public:
45 null_mechanism_t (session_base_t *session_,
46 const std::string &peer_address_,
47 const options_t &options_);
48 virtual ~null_mechanism_t ();
49
50 // mechanism implementation
51 virtual int next_handshake_command (msg_t *msg_);
52 virtual int process_handshake_command (msg_t *msg_);
53 virtual int zap_msg_available ();
54 virtual status_t status () const;
55
56 private:
57 bool _ready_command_sent;
58 bool _error_command_sent;
59 bool _ready_command_received;
60 bool _error_command_received;
61 bool _zap_request_sent;
62 bool _zap_reply_received;
63
64 int process_ready_command (const unsigned char *cmd_data_,
65 size_t data_size_);
66 int process_error_command (const unsigned char *cmd_data_,
67 size_t data_size_);
68
69 void send_zap_request ();
70};
71}
72
73#endif
74