Bug fixed for unix error "readlink /proc/self/fd/0" on MacOS.
[Faustine.git] / interpreter / preprocessor / faust-0.9.47mr3 / architecture / osclib / oscpack / ip / UdpSocket.h
1 /*
2 oscpack -- Open Sound Control packet manipulation library
3 http://www.audiomulch.com/~rossb/oscpack
4
5 Copyright (c) 2004-2005 Ross Bencina <rossb@audiomulch.com>
6
7 Permission is hereby granted, free of charge, to any person obtaining
8 a copy of this software and associated documentation files
9 (the "Software"), to deal in the Software without restriction,
10 including without limitation the rights to use, copy, modify, merge,
11 publish, distribute, sublicense, and/or sell copies of the Software,
12 and to permit persons to whom the Software is furnished to do so,
13 subject to the following conditions:
14
15 The above copyright notice and this permission notice shall be
16 included in all copies or substantial portions of the Software.
17
18 Any person wishing to distribute modifications to the Software is
19 requested to send the modifications to the original developer so that
20 they can be incorporated into the canonical version.
21
22 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
23 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
24 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
25 IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
26 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
27 CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 */
30 #ifndef INCLUDED_UDPSOCKET_H
31 #define INCLUDED_UDPSOCKET_H
32
33 #ifndef INCLUDED_NETWORKINGUTILITIES_H
34 #include "NetworkingUtils.h"
35 #endif /* INCLUDED_NETWORKINGUTILITIES_H */
36
37 #ifndef INCLUDED_IPENDPOINTNAME_H
38 #include "IpEndpointName.h"
39 #endif /* INCLUDED_IPENDPOINTNAME_H */
40
41
42 class PacketListener;
43 class TimerListener;
44
45 class UdpSocket;
46
47 class SocketReceiveMultiplexer{
48 class Implementation;
49 Implementation *impl_;
50
51 friend class UdpSocket;
52
53 public:
54 SocketReceiveMultiplexer();
55 ~SocketReceiveMultiplexer();
56
57 // only call the attach/detach methods _before_ calling Run
58
59 // only one listener per socket, each socket at most once
60 void AttachSocketListener( UdpSocket *socket, PacketListener *listener );
61 void DetachSocketListener( UdpSocket *socket, PacketListener *listener );
62
63 void AttachPeriodicTimerListener( int periodMilliseconds, TimerListener *listener );
64 void AttachPeriodicTimerListener(
65 int initialDelayMilliseconds, int periodMilliseconds, TimerListener *listener );
66 void DetachPeriodicTimerListener( TimerListener *listener );
67
68 void Run(); // loop and block processing messages indefinitely
69 void RunUntilSigInt();
70 void Break(); // call this from a listener to exit once the listener returns
71 void AsynchronousBreak(); // call this from another thread or signal handler to exit the Run() state
72 };
73
74
75 class UdpSocket{
76 class Implementation;
77 Implementation *impl_;
78
79 friend class SocketReceiveMultiplexer::Implementation;
80
81 public:
82
83 // ctor throws std::runtime_error if there's a problem
84 // initializing the socket.
85 UdpSocket();
86 virtual ~UdpSocket();
87
88 // the socket is created in an unbound, unconnected state
89 // such a socket can only be used to send to an arbitrary
90 // address using SendTo(). To use Send() you need to first
91 // connect to a remote endpoint using Connect(). To use
92 // ReceiveFrom you need to first bind to a local endpoint
93 // using Bind().
94
95 // retrieve the local endpoint name when sending to 'to'
96 IpEndpointName LocalEndpointFor( const IpEndpointName& remoteEndpoint ) const;
97
98 // Connect to a remote endpoint which is used as the target
99 // for calls to Send()
100 void Connect( const IpEndpointName& remoteEndpoint );
101 void Send( const char *data, int size );
102 void SendTo( const IpEndpointName& remoteEndpoint, const char *data, int size );
103
104
105 // Bind a local endpoint to receive incoming data. Endpoint
106 // can be 'any' for the system to choose an endpoint
107 void Bind( const IpEndpointName& localEndpoint );
108 bool IsBound() const;
109
110 int ReceiveFrom( IpEndpointName& remoteEndpoint, char *data, int size );
111 };
112
113
114 // convenience classes for transmitting and receiving
115 // they just call Connect and/or Bind in the ctor.
116 // note that you can still use a receive socket
117 // for transmitting etc
118
119 class UdpTransmitSocket : public UdpSocket{
120 public:
121 UdpTransmitSocket( const IpEndpointName& remoteEndpoint )
122 { Connect( remoteEndpoint ); }
123 };
124
125
126 class UdpReceiveSocket : public UdpSocket{
127 public:
128 UdpReceiveSocket( const IpEndpointName& localEndpoint )
129 { Bind( localEndpoint ); }
130 };
131
132
133 // UdpListeningReceiveSocket provides a simple way to bind one listener
134 // to a single socket without having to manually set up a SocketReceiveMultiplexer
135
136 class UdpListeningReceiveSocket : public UdpSocket{
137 SocketReceiveMultiplexer mux_;
138 PacketListener *listener_;
139 public:
140 UdpListeningReceiveSocket( const IpEndpointName& localEndpoint, PacketListener *listener )
141 : listener_( listener )
142 {
143 Bind( localEndpoint );
144 mux_.AttachSocketListener( this, listener_ );
145 }
146
147 ~UdpListeningReceiveSocket()
148 { mux_.DetachSocketListener( this, listener_ ); }
149
150 // see SocketReceiveMultiplexer above for the behaviour of these methods...
151 void Run() { mux_.Run(); }
152 void RunUntilSigInt() { mux_.RunUntilSigInt(); }
153 void Break() { mux_.Break(); }
154 void AsynchronousBreak() { mux_.AsynchronousBreak(); }
155 };
156
157
158 #endif /* INCLUDED_UDPSOCKET_H */