1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
// **********************************************************************
//
// Copyright (c) 2003-2017 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
#if !SILVERLIGHT
namespace IceInternal
{
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Net;
using System.Net.Sockets;
using System.Text;
class TcpAcceptor : Acceptor
{
public virtual void close()
{
Debug.Assert(_acceptFd == null);
if(_fd != null)
{
Network.closeSocketNoThrow(_fd);
_fd = null;
}
}
public virtual EndpointI listen()
{
try
{
_addr = Network.doBind(_fd, _addr);
Network.doListen(_fd, _backlog);
}
catch(SystemException)
{
_fd = null;
throw;
}
_endpoint = _endpoint.endpoint(this);
return _endpoint;
}
public virtual bool startAccept(AsyncCallback callback, object state)
{
try
{
_result = _fd.BeginAccept(delegate(IAsyncResult result)
{
if(!result.CompletedSynchronously)
{
callback(result.AsyncState);
}
}, state);
}
catch(SocketException ex)
{
throw new Ice.SocketException(ex);
}
return _result.CompletedSynchronously;
}
public virtual void finishAccept()
{
if(_fd != null)
{
_acceptFd = null;
try
{
_acceptFd = _fd.EndAccept(_result);
}
catch(SocketException ex)
{
_acceptError = ex;
}
}
}
public virtual Transceiver accept()
{
if(_acceptFd == null)
{
throw _acceptError;
}
Socket acceptFd = _acceptFd;
_acceptFd = null;
_acceptError = null;
return new TcpTransceiver(_instance, new StreamSocket(_instance, acceptFd));
}
public string protocol()
{
return _instance.protocol();
}
public override string ToString()
{
return Network.addrToString(_addr);
}
public string toDetailedString()
{
StringBuilder s = new StringBuilder("local address = ");
s.Append(ToString());
List<string> intfs =
Network.getHostsForEndpointExpand(_addr.Address.ToString(), _instance.protocolSupport(), true);
if(intfs.Count != 0)
{
s.Append("\nlocal interfaces = ");
s.Append(String.Join(", ", intfs.ToArray()));
}
return s.ToString();
}
internal int effectivePort()
{
return _addr.Port;
}
internal TcpAcceptor(TcpEndpointI endpoint, ProtocolInstance instance, string host, int port)
{
_endpoint = endpoint;
_instance = instance;
_backlog = instance.properties().getPropertyAsIntWithDefault("Ice.TCP.Backlog", 511);
try
{
int protocol = _instance.protocolSupport();
_addr = (IPEndPoint)Network.getAddressForServer(host, port, protocol, _instance.preferIPv6());
_fd = Network.createServerSocket(false, _addr.AddressFamily, protocol);
Network.setBlock(_fd, false);
# if !COMPACT
Network.setTcpBufSize(_fd, _instance);
# endif
if(AssemblyUtil.platform_ != AssemblyUtil.Platform.Windows)
{
//
// Enable SO_REUSEADDR on Unix platforms to allow re-using the
// socket even if it's in the TIME_WAIT state. On Windows,
// this doesn't appear to be necessary and enabling
// SO_REUSEADDR would actually not be a good thing since it
// allows a second process to bind to an address even it's
// already bound by another process.
//
// TODO: using SO_EXCLUSIVEADDRUSE on Windows would probably
// be better but it's only supported by recent Windows
// versions (XP SP2, Windows Server 2003).
//
Network.setReuseAddress(_fd, true);
}
}
catch(System.Exception)
{
_fd = null;
throw;
}
}
private TcpEndpointI _endpoint;
private ProtocolInstance _instance;
private Socket _fd;
private Socket _acceptFd;
private System.Exception _acceptError;
private int _backlog;
private IPEndPoint _addr;
private IAsyncResult _result;
}
}
#endif
|
