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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
|
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
* Contains some contributions under the Thrift Software License.
* Please see doc/old-thrift-license.txt in the Thrift distribution for
* details.
*/
using System;
using System.IO.Pipes;
using System.Threading;
using System.Security.Principal;
namespace Thrift.Transport
{
public class TNamedPipeServerTransport : TServerTransport
{
/// <summary>
/// This is the address of the Pipe on the localhost.
/// </summary>
private readonly string pipeAddress;
private NamedPipeServerStream stream = null;
private bool asyncMode = true;
public TNamedPipeServerTransport(string pipeAddress)
{
this.pipeAddress = pipeAddress;
}
public override void Listen()
{
// nothing to do here
}
public override void Close()
{
if (stream != null)
{
try
{
stream.Close();
stream.Dispose();
}
finally
{
stream = null;
}
}
}
private void EnsurePipeInstance()
{
if (stream == null)
{
var direction = PipeDirection.InOut;
var maxconn = NamedPipeServerStream.MaxAllowedServerInstances;
var mode = PipeTransmissionMode.Byte;
var options = asyncMode ? PipeOptions.Asynchronous : PipeOptions.None;
const int INBUF_SIZE = 4096;
const int OUTBUF_SIZE = 4096;
// security
var security = new PipeSecurity();
security.AddAccessRule(
new PipeAccessRule(
new SecurityIdentifier(WellKnownSidType.WorldSid, null),
PipeAccessRights.Read | PipeAccessRights.Write | PipeAccessRights.Synchronize | PipeAccessRights.CreateNewInstance,
System.Security.AccessControl.AccessControlType.Allow
)
);
try
{
stream = new NamedPipeServerStream(pipeAddress, direction, maxconn, mode, options, INBUF_SIZE, OUTBUF_SIZE, security);
}
catch (NotImplementedException) // Mono still does not support async, fallback to sync
{
if (asyncMode)
{
options &= (~PipeOptions.Asynchronous);
stream = new NamedPipeServerStream(pipeAddress, direction, maxconn, mode, options, INBUF_SIZE, OUTBUF_SIZE, security);
asyncMode = false;
}
else
{
throw;
}
}
}
}
protected override TTransport AcceptImpl()
{
try
{
EnsurePipeInstance();
if (asyncMode)
{
var evt = new ManualResetEvent(false);
Exception eOuter = null;
stream.BeginWaitForConnection(asyncResult =>
{
try
{
if (stream != null)
stream.EndWaitForConnection(asyncResult);
else
eOuter = new TTransportException(TTransportException.ExceptionType.Interrupted);
}
catch (Exception e)
{
if (stream != null)
eOuter = e;
else
eOuter = new TTransportException(TTransportException.ExceptionType.Interrupted, e.Message, e);
}
evt.Set();
}, null);
evt.WaitOne();
if (eOuter != null)
throw eOuter; // rethrow exception
}
else
{
stream.WaitForConnection();
}
var trans = new ServerTransport(stream,asyncMode);
stream = null; // pass ownership to ServerTransport
return trans;
}
catch (TTransportException)
{
Close();
throw;
}
catch (Exception e)
{
Close();
throw new TTransportException(TTransportException.ExceptionType.NotOpen, e.Message, e);
}
}
private class ServerTransport : TTransport
{
private NamedPipeServerStream stream;
private bool asyncMode;
public ServerTransport(NamedPipeServerStream stream, bool asyncMode)
{
this.stream = stream;
this.asyncMode = asyncMode;
}
public override bool IsOpen
{
get { return stream != null && stream.IsConnected; }
}
public override void Open()
{
}
public override void Close()
{
if (stream != null)
stream.Close();
}
public override int Read(byte[] buf, int off, int len)
{
if (stream == null)
{
throw new TTransportException(TTransportException.ExceptionType.NotOpen);
}
if (asyncMode)
{
Exception eOuter = null;
var evt = new ManualResetEvent(false);
int retval = 0;
stream.BeginRead(buf, off, len, asyncResult =>
{
try
{
if (stream != null)
retval = stream.EndRead(asyncResult);
else
eOuter = new TTransportException(TTransportException.ExceptionType.Interrupted);
}
catch (Exception e)
{
if (stream != null)
eOuter = e;
else
eOuter = new TTransportException(TTransportException.ExceptionType.Interrupted, e.Message, e);
}
evt.Set();
}, null);
evt.WaitOne();
if (eOuter != null)
throw eOuter; // rethrow exception
else
return retval;
}
else
{
return stream.Read(buf, off, len);
}
}
public override void Write(byte[] buf, int off, int len)
{
if (stream == null)
{
throw new TTransportException(TTransportException.ExceptionType.NotOpen);
}
// if necessary, send the data in chunks
// there's a system limit around 0x10000 bytes that we hit otherwise
// MSDN: "Pipe write operations across a network are limited to 65,535 bytes per write. For more information regarding pipes, see the Remarks section."
var nBytes = Math.Min(len, 15 * 4096); // 16 would exceed the limit
while (nBytes > 0)
{
if (asyncMode)
{
Exception eOuter = null;
var evt = new ManualResetEvent(false);
stream.BeginWrite(buf, off, nBytes, asyncResult =>
{
try
{
if (stream != null)
stream.EndWrite(asyncResult);
else
eOuter = new TTransportException(TTransportException.ExceptionType.Interrupted);
}
catch (Exception e)
{
if (stream != null)
eOuter = e;
else
eOuter = new TTransportException(TTransportException.ExceptionType.Interrupted, e.Message, e);
}
evt.Set();
}, null);
evt.WaitOne();
if (eOuter != null)
throw eOuter; // rethrow exception
}
else
{
stream.Write(buf, off, nBytes);
}
off += nBytes;
len -= nBytes;
nBytes = Math.Min(len, nBytes);
}
}
protected override void Dispose(bool disposing)
{
if (stream != null)
stream.Dispose();
}
}
}
}
|
