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_RADIO_HPP_INCLUDED__
31#define __ZMQ_RADIO_HPP_INCLUDED__
32
33#include <map>
34#include <string>
35#include <vector>
36
37#include "socket_base.hpp"
38#include "session_base.hpp"
39#include "dist.hpp"
40#include "msg.hpp"
41
42namespace zmq
43{
44class ctx_t;
45class pipe_t;
46class io_thread_t;
47
48class radio_t : public socket_base_t
49{
50 public:
51 radio_t (zmq::ctx_t *parent_, uint32_t tid_, int sid_);
52 ~radio_t ();
53
54 // Implementations of virtual functions from socket_base_t.
55 void xattach_pipe (zmq::pipe_t *pipe_,
56 bool subscribe_to_all_ = false,
57 bool locally_initiated_ = false);
58 int xsend (zmq::msg_t *msg_);
59 bool xhas_out ();
60 int xrecv (zmq::msg_t *msg_);
61 bool xhas_in ();
62 void xread_activated (zmq::pipe_t *pipe_);
63 void xwrite_activated (zmq::pipe_t *pipe_);
64 int xsetsockopt (int option_, const void *optval_, size_t optvallen_);
65 void xpipe_terminated (zmq::pipe_t *pipe_);
66
67 private:
68 // List of all subscriptions mapped to corresponding pipes.
69 typedef std::multimap<std::string, pipe_t *> subscriptions_t;
70 subscriptions_t _subscriptions;
71
72 // List of udp pipes
73 typedef std::vector<pipe_t *> udp_pipes_t;
74 udp_pipes_t _udp_pipes;
75
76 // Distributor of messages holding the list of outbound pipes.
77 dist_t _dist;
78
79 // Drop messages if HWM reached, otherwise return with EAGAIN
80 bool _lossy;
81
82 ZMQ_NON_COPYABLE_NOR_MOVABLE (radio_t)
83};
84
85class radio_session_t : public session_base_t
86{
87 public:
88 radio_session_t (zmq::io_thread_t *io_thread_,
89 bool connect_,
90 zmq::socket_base_t *socket_,
91 const options_t &options_,
92 address_t *addr_);
93 ~radio_session_t ();
94
95 // Overrides of the functions from session_base_t.
96 int push_msg (msg_t *msg_);
97 int pull_msg (msg_t *msg_);
98 void reset ();
99
100 private:
101 enum
102 {
103 group,
104 body
105 } _state;
106
107 msg_t _pending_msg;
108
109 ZMQ_NON_COPYABLE_NOR_MOVABLE (radio_session_t)
110};
111}
112
113#endif
114