diff options
Diffstat (limited to '')
-rw-r--r-- | OpenSim/Region/ClientStack/LindenUDP/LLUDPClientCollection.cs | 18 | ||||
-rw-r--r-- | OpenSim/Region/ClientStack/LindenUDP/OpenSimUDPBase.cs | 680 |
2 files changed, 349 insertions, 349 deletions
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLUDPClientCollection.cs b/OpenSim/Region/ClientStack/LindenUDP/LLUDPClientCollection.cs index f6ccf01..dbb9861 100644 --- a/OpenSim/Region/ClientStack/LindenUDP/LLUDPClientCollection.cs +++ b/OpenSim/Region/ClientStack/LindenUDP/LLUDPClientCollection.cs | |||
@@ -224,16 +224,16 @@ namespace OpenSim.Region.ClientStack.LindenUDP | |||
224 | 224 | ||
225 | ////return success; | 225 | ////return success; |
226 | 226 | ||
227 | //lock (m_sync) | 227 | lock (m_sync) |
228 | // return Dictionary1.TryGetValue(key, out value); | 228 | return Dictionary1.TryGetValue(key, out value); |
229 | 229 | ||
230 | try | 230 | //try |
231 | { | 231 | //{ |
232 | return Dictionary1.TryGetValue(key, out value); | 232 | // return Dictionary1.TryGetValue(key, out value); |
233 | } | 233 | //} |
234 | catch { } | 234 | //catch { } |
235 | value = null; | 235 | //value = null; |
236 | return false; | 236 | //return false; |
237 | } | 237 | } |
238 | 238 | ||
239 | public bool TryGetValue(IPEndPoint key, out LLUDPClient value) | 239 | public bool TryGetValue(IPEndPoint key, out LLUDPClient value) |
diff --git a/OpenSim/Region/ClientStack/LindenUDP/OpenSimUDPBase.cs b/OpenSim/Region/ClientStack/LindenUDP/OpenSimUDPBase.cs index aaefbc6..218aaac 100644 --- a/OpenSim/Region/ClientStack/LindenUDP/OpenSimUDPBase.cs +++ b/OpenSim/Region/ClientStack/LindenUDP/OpenSimUDPBase.cs | |||
@@ -1,340 +1,340 @@ | |||
1 | /* | 1 | /* |
2 | * Copyright (c) 2006, Clutch, Inc. | 2 | * Copyright (c) 2006, Clutch, Inc. |
3 | * Original Author: Jeff Cesnik | 3 | * Original Author: Jeff Cesnik |
4 | * All rights reserved. | 4 | * All rights reserved. |
5 | * | 5 | * |
6 | * - Redistribution and use in source and binary forms, with or without | 6 | * - Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions are met: | 7 | * modification, are permitted provided that the following conditions are met: |
8 | * | 8 | * |
9 | * - Redistributions of source code must retain the above copyright notice, this | 9 | * - Redistributions of source code must retain the above copyright notice, this |
10 | * list of conditions and the following disclaimer. | 10 | * list of conditions and the following disclaimer. |
11 | * - Neither the name of the openmetaverse.org nor the names | 11 | * - Neither the name of the openmetaverse.org nor the names |
12 | * of its contributors may be used to endorse or promote products derived from | 12 | * of its contributors may be used to endorse or promote products derived from |
13 | * this software without specific prior written permission. | 13 | * this software without specific prior written permission. |
14 | * | 14 | * |
15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | 15 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
16 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 16 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
19 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | 19 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
20 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | 20 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
21 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | 21 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
24 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 24 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
25 | * POSSIBILITY OF SUCH DAMAGE. | 25 | * POSSIBILITY OF SUCH DAMAGE. |
26 | */ | 26 | */ |
27 | 27 | ||
28 | using System; | 28 | using System; |
29 | using System.Net; | 29 | using System.Net; |
30 | using System.Net.Sockets; | 30 | using System.Net.Sockets; |
31 | using System.Threading; | 31 | using System.Threading; |
32 | using OpenMetaverse; | 32 | using OpenMetaverse; |
33 | 33 | ||
34 | namespace OpenSim.Region.ClientStack.LindenUDP | 34 | namespace OpenSim.Region.ClientStack.LindenUDP |
35 | { | 35 | { |
36 | /// <summary> | 36 | /// <summary> |
37 | /// | 37 | /// |
38 | /// </summary> | 38 | /// </summary> |
39 | public abstract class OpenSimUDPBase | 39 | public abstract class OpenSimUDPBase |
40 | { | 40 | { |
41 | // these abstract methods must be implemented in a derived class to actually do | 41 | // these abstract methods must be implemented in a derived class to actually do |
42 | // something with the packets that are sent and received. | 42 | // something with the packets that are sent and received. |
43 | protected abstract void PacketReceived(UDPPacketBuffer buffer); | 43 | protected abstract void PacketReceived(UDPPacketBuffer buffer); |
44 | protected abstract void PacketSent(UDPPacketBuffer buffer, int bytesSent); | 44 | protected abstract void PacketSent(UDPPacketBuffer buffer, int bytesSent); |
45 | 45 | ||
46 | // the port to listen on | 46 | // the port to listen on |
47 | internal int udpPort; | 47 | internal int udpPort; |
48 | 48 | ||
49 | // the UDP socket | 49 | // the UDP socket |
50 | private Socket udpSocket; | 50 | private Socket udpSocket; |
51 | 51 | ||
52 | // the ReaderWriterLock is used solely for the purposes of shutdown (Stop()). | 52 | // the ReaderWriterLock is used solely for the purposes of shutdown (Stop()). |
53 | // since there are potentially many "reader" threads in the internal .NET IOCP | 53 | // since there are potentially many "reader" threads in the internal .NET IOCP |
54 | // thread pool, this is a cheaper synchronization primitive than using | 54 | // thread pool, this is a cheaper synchronization primitive than using |
55 | // a Mutex object. This allows many UDP socket "reads" concurrently - when | 55 | // a Mutex object. This allows many UDP socket "reads" concurrently - when |
56 | // Stop() is called, it attempts to obtain a writer lock which will then | 56 | // Stop() is called, it attempts to obtain a writer lock which will then |
57 | // wait until all outstanding operations are completed before shutting down. | 57 | // wait until all outstanding operations are completed before shutting down. |
58 | // this avoids the problem of closing the socket with outstanding operations | 58 | // this avoids the problem of closing the socket with outstanding operations |
59 | // and trying to catch the inevitable ObjectDisposedException. | 59 | // and trying to catch the inevitable ObjectDisposedException. |
60 | private ReaderWriterLock rwLock = new ReaderWriterLock(); | 60 | private ReaderWriterLock rwLock = new ReaderWriterLock(); |
61 | 61 | ||
62 | // number of outstanding operations. This is a reference count | 62 | // number of outstanding operations. This is a reference count |
63 | // which we use to ensure that the threads exit cleanly. Note that | 63 | // which we use to ensure that the threads exit cleanly. Note that |
64 | // we need this because the threads will potentially still need to process | 64 | // we need this because the threads will potentially still need to process |
65 | // data even after the socket is closed. | 65 | // data even after the socket is closed. |
66 | private int rwOperationCount = 0; | 66 | private int rwOperationCount = 0; |
67 | 67 | ||
68 | // the all important shutdownFlag. This is synchronized through the ReaderWriterLock. | 68 | // the all important shutdownFlag. This is synchronized through the ReaderWriterLock. |
69 | private volatile bool shutdownFlag = true; | 69 | private volatile bool shutdownFlag = true; |
70 | 70 | ||
71 | // the remote endpoint to communicate with | 71 | // the remote endpoint to communicate with |
72 | protected IPEndPoint remoteEndPoint = null; | 72 | protected IPEndPoint remoteEndPoint = null; |
73 | 73 | ||
74 | 74 | ||
75 | /// <summary> | 75 | /// <summary> |
76 | /// Initialize the UDP packet handler in server mode | 76 | /// Initialize the UDP packet handler in server mode |
77 | /// </summary> | 77 | /// </summary> |
78 | /// <param name="port">Port to listening for incoming UDP packets on</param> | 78 | /// <param name="port">Port to listening for incoming UDP packets on</param> |
79 | public OpenSimUDPBase(int port) | 79 | public OpenSimUDPBase(int port) |
80 | { | 80 | { |
81 | udpPort = port; | 81 | udpPort = port; |
82 | } | 82 | } |
83 | 83 | ||
84 | /// <summary> | 84 | /// <summary> |
85 | /// Initialize the UDP packet handler in client mode | 85 | /// Initialize the UDP packet handler in client mode |
86 | /// </summary> | 86 | /// </summary> |
87 | /// <param name="endPoint">Remote UDP server to connect to</param> | 87 | /// <param name="endPoint">Remote UDP server to connect to</param> |
88 | public OpenSimUDPBase(IPEndPoint endPoint) | 88 | public OpenSimUDPBase(IPEndPoint endPoint) |
89 | { | 89 | { |
90 | remoteEndPoint = endPoint; | 90 | remoteEndPoint = endPoint; |
91 | udpPort = 0; | 91 | udpPort = 0; |
92 | } | 92 | } |
93 | 93 | ||
94 | /// <summary> | 94 | /// <summary> |
95 | /// | 95 | /// |
96 | /// </summary> | 96 | /// </summary> |
97 | public void Start() | 97 | public void Start() |
98 | { | 98 | { |
99 | if (shutdownFlag) | 99 | if (shutdownFlag) |
100 | { | 100 | { |
101 | if (remoteEndPoint == null) | 101 | if (remoteEndPoint == null) |
102 | { | 102 | { |
103 | // Server mode | 103 | // Server mode |
104 | 104 | ||
105 | // create and bind the socket | 105 | // create and bind the socket |
106 | IPEndPoint ipep = new IPEndPoint(Settings.BIND_ADDR, udpPort); | 106 | IPEndPoint ipep = new IPEndPoint(Settings.BIND_ADDR, udpPort); |
107 | udpSocket = new Socket( | 107 | udpSocket = new Socket( |
108 | AddressFamily.InterNetwork, | 108 | AddressFamily.InterNetwork, |
109 | SocketType.Dgram, | 109 | SocketType.Dgram, |
110 | ProtocolType.Udp); | 110 | ProtocolType.Udp); |
111 | udpSocket.Bind(ipep); | 111 | udpSocket.Bind(ipep); |
112 | } | 112 | } |
113 | else | 113 | else |
114 | { | 114 | { |
115 | // Client mode | 115 | // Client mode |
116 | IPEndPoint ipep = new IPEndPoint(Settings.BIND_ADDR, udpPort); | 116 | IPEndPoint ipep = new IPEndPoint(Settings.BIND_ADDR, udpPort); |
117 | udpSocket = new Socket( | 117 | udpSocket = new Socket( |
118 | AddressFamily.InterNetwork, | 118 | AddressFamily.InterNetwork, |
119 | SocketType.Dgram, | 119 | SocketType.Dgram, |
120 | ProtocolType.Udp); | 120 | ProtocolType.Udp); |
121 | udpSocket.Bind(ipep); | 121 | udpSocket.Bind(ipep); |
122 | //udpSocket.Connect(remoteEndPoint); | 122 | //udpSocket.Connect(remoteEndPoint); |
123 | } | 123 | } |
124 | 124 | ||
125 | // we're not shutting down, we're starting up | 125 | // we're not shutting down, we're starting up |
126 | shutdownFlag = false; | 126 | shutdownFlag = false; |
127 | 127 | ||
128 | // kick off an async receive. The Start() method will return, the | 128 | // kick off an async receive. The Start() method will return, the |
129 | // actual receives will occur asynchronously and will be caught in | 129 | // actual receives will occur asynchronously and will be caught in |
130 | // AsyncEndRecieve(). | 130 | // AsyncEndRecieve(). |
131 | AsyncBeginReceive(); | 131 | AsyncBeginReceive(); |
132 | } | 132 | } |
133 | } | 133 | } |
134 | 134 | ||
135 | /// <summary> | 135 | /// <summary> |
136 | /// | 136 | /// |
137 | /// </summary> | 137 | /// </summary> |
138 | public void Stop() | 138 | public void Stop() |
139 | { | 139 | { |
140 | if (!shutdownFlag) | 140 | if (!shutdownFlag) |
141 | { | 141 | { |
142 | // wait indefinitely for a writer lock. Once this is called, the .NET runtime | 142 | // wait indefinitely for a writer lock. Once this is called, the .NET runtime |
143 | // will deny any more reader locks, in effect blocking all other send/receive | 143 | // will deny any more reader locks, in effect blocking all other send/receive |
144 | // threads. Once we have the lock, we set shutdownFlag to inform the other | 144 | // threads. Once we have the lock, we set shutdownFlag to inform the other |
145 | // threads that the socket is closed. | 145 | // threads that the socket is closed. |
146 | rwLock.AcquireWriterLock(-1); | 146 | rwLock.AcquireWriterLock(-1); |
147 | shutdownFlag = true; | 147 | shutdownFlag = true; |
148 | udpSocket.Close(); | 148 | udpSocket.Close(); |
149 | rwLock.ReleaseWriterLock(); | 149 | rwLock.ReleaseWriterLock(); |
150 | 150 | ||
151 | // wait for any pending operations to complete on other | 151 | // wait for any pending operations to complete on other |
152 | // threads before exiting. | 152 | // threads before exiting. |
153 | const int FORCE_STOP = 100; | 153 | const int FORCE_STOP = 100; |
154 | int i = 0; | 154 | int i = 0; |
155 | while (rwOperationCount > 0 && i < FORCE_STOP) | 155 | while (rwOperationCount > 0 && i < FORCE_STOP) |
156 | { | 156 | { |
157 | Thread.Sleep(10); | 157 | Thread.Sleep(10); |
158 | ++i; | 158 | ++i; |
159 | } | 159 | } |
160 | 160 | ||
161 | if (i >= FORCE_STOP) | 161 | if (i >= FORCE_STOP) |
162 | { | 162 | { |
163 | Logger.Log("UDPBase.Stop() forced shutdown while waiting on pending operations", | 163 | Logger.Log("UDPBase.Stop() forced shutdown while waiting on pending operations", |
164 | Helpers.LogLevel.Warning); | 164 | Helpers.LogLevel.Warning); |
165 | } | 165 | } |
166 | } | 166 | } |
167 | } | 167 | } |
168 | 168 | ||
169 | /// <summary> | 169 | /// <summary> |
170 | /// | 170 | /// |
171 | /// </summary> | 171 | /// </summary> |
172 | public bool IsRunning | 172 | public bool IsRunning |
173 | { | 173 | { |
174 | get { return !shutdownFlag; } | 174 | get { return !shutdownFlag; } |
175 | } | 175 | } |
176 | 176 | ||
177 | private void AsyncBeginReceive() | 177 | private void AsyncBeginReceive() |
178 | { | 178 | { |
179 | // this method actually kicks off the async read on the socket. | 179 | // this method actually kicks off the async read on the socket. |
180 | // we aquire a reader lock here to ensure that no other thread | 180 | // we aquire a reader lock here to ensure that no other thread |
181 | // is trying to set shutdownFlag and close the socket. | 181 | // is trying to set shutdownFlag and close the socket. |
182 | rwLock.AcquireReaderLock(-1); | 182 | rwLock.AcquireReaderLock(-1); |
183 | 183 | ||
184 | if (!shutdownFlag) | 184 | if (!shutdownFlag) |
185 | { | 185 | { |
186 | // increment the count of pending operations | 186 | // increment the count of pending operations |
187 | Interlocked.Increment(ref rwOperationCount); | 187 | Interlocked.Increment(ref rwOperationCount); |
188 | 188 | ||
189 | // allocate a packet buffer | 189 | // allocate a packet buffer |
190 | //WrappedObject<UDPPacketBuffer> wrappedBuffer = Pool.CheckOut(); | 190 | //WrappedObject<UDPPacketBuffer> wrappedBuffer = Pool.CheckOut(); |
191 | UDPPacketBuffer buf = new UDPPacketBuffer(); | 191 | UDPPacketBuffer buf = new UDPPacketBuffer(); |
192 | 192 | ||
193 | try | 193 | try |
194 | { | 194 | { |
195 | // kick off an async read | 195 | // kick off an async read |
196 | udpSocket.BeginReceiveFrom( | 196 | udpSocket.BeginReceiveFrom( |
197 | //wrappedBuffer.Instance.Data, | 197 | //wrappedBuffer.Instance.Data, |
198 | buf.Data, | 198 | buf.Data, |
199 | 0, | 199 | 0, |
200 | UDPPacketBuffer.BUFFER_SIZE, | 200 | UDPPacketBuffer.BUFFER_SIZE, |
201 | SocketFlags.None, | 201 | SocketFlags.None, |
202 | //ref wrappedBuffer.Instance.RemoteEndPoint, | 202 | //ref wrappedBuffer.Instance.RemoteEndPoint, |
203 | ref buf.RemoteEndPoint, | 203 | ref buf.RemoteEndPoint, |
204 | new AsyncCallback(AsyncEndReceive), | 204 | new AsyncCallback(AsyncEndReceive), |
205 | //wrappedBuffer); | 205 | //wrappedBuffer); |
206 | buf); | 206 | buf); |
207 | } | 207 | } |
208 | catch (SocketException) | 208 | catch (SocketException) |
209 | { | 209 | { |
210 | // something bad happened | 210 | // something bad happened |
211 | //Logger.Log( | 211 | //Logger.Log( |
212 | // "A SocketException occurred in UDPServer.AsyncBeginReceive()", | 212 | // "A SocketException occurred in UDPServer.AsyncBeginReceive()", |
213 | // Helpers.LogLevel.Error, se); | 213 | // Helpers.LogLevel.Error, se); |
214 | 214 | ||
215 | // an error occurred, therefore the operation is void. Decrement the reference count. | 215 | // an error occurred, therefore the operation is void. Decrement the reference count. |
216 | Interlocked.Decrement(ref rwOperationCount); | 216 | Interlocked.Decrement(ref rwOperationCount); |
217 | } | 217 | } |
218 | } | 218 | } |
219 | 219 | ||
220 | // we're done with the socket for now, release the reader lock. | 220 | // we're done with the socket for now, release the reader lock. |
221 | rwLock.ReleaseReaderLock(); | 221 | rwLock.ReleaseReaderLock(); |
222 | } | 222 | } |
223 | 223 | ||
224 | private void AsyncEndReceive(IAsyncResult iar) | 224 | private void AsyncEndReceive(IAsyncResult iar) |
225 | { | 225 | { |
226 | // Asynchronous receive operations will complete here through the call | 226 | // Asynchronous receive operations will complete here through the call |
227 | // to AsyncBeginReceive | 227 | // to AsyncBeginReceive |
228 | 228 | ||
229 | // aquire a reader lock | 229 | // aquire a reader lock |
230 | rwLock.AcquireReaderLock(-1); | 230 | rwLock.AcquireReaderLock(-1); |
231 | 231 | ||
232 | if (!shutdownFlag) | 232 | if (!shutdownFlag) |
233 | { | 233 | { |
234 | // get the buffer that was created in AsyncBeginReceive | 234 | // get the buffer that was created in AsyncBeginReceive |
235 | // this is the received data | 235 | // this is the received data |
236 | //WrappedObject<UDPPacketBuffer> wrappedBuffer = (WrappedObject<UDPPacketBuffer>)iar.AsyncState; | 236 | //WrappedObject<UDPPacketBuffer> wrappedBuffer = (WrappedObject<UDPPacketBuffer>)iar.AsyncState; |
237 | //UDPPacketBuffer buffer = wrappedBuffer.Instance; | 237 | //UDPPacketBuffer buffer = wrappedBuffer.Instance; |
238 | UDPPacketBuffer buffer = (UDPPacketBuffer)iar.AsyncState; | 238 | UDPPacketBuffer buffer = (UDPPacketBuffer)iar.AsyncState; |
239 | 239 | ||
240 | try | 240 | try |
241 | { | 241 | { |
242 | // get the length of data actually read from the socket, store it with the | 242 | // get the length of data actually read from the socket, store it with the |
243 | // buffer | 243 | // buffer |
244 | buffer.DataLength = udpSocket.EndReceiveFrom(iar, ref buffer.RemoteEndPoint); | 244 | buffer.DataLength = udpSocket.EndReceiveFrom(iar, ref buffer.RemoteEndPoint); |
245 | 245 | ||
246 | // this operation is now complete, decrement the reference count | 246 | // this operation is now complete, decrement the reference count |
247 | Interlocked.Decrement(ref rwOperationCount); | 247 | Interlocked.Decrement(ref rwOperationCount); |
248 | 248 | ||
249 | // we're done with the socket, release the reader lock | 249 | // we're done with the socket, release the reader lock |
250 | rwLock.ReleaseReaderLock(); | 250 | rwLock.ReleaseReaderLock(); |
251 | 251 | ||
252 | // call the abstract method PacketReceived(), passing the buffer that | 252 | // call the abstract method PacketReceived(), passing the buffer that |
253 | // has just been filled from the socket read. | 253 | // has just been filled from the socket read. |
254 | PacketReceived(buffer); | 254 | PacketReceived(buffer); |
255 | } | 255 | } |
256 | catch (SocketException) | 256 | catch (SocketException) |
257 | { | 257 | { |
258 | // an error occurred, therefore the operation is void. Decrement the reference count. | 258 | // an error occurred, therefore the operation is void. Decrement the reference count. |
259 | Interlocked.Decrement(ref rwOperationCount); | 259 | Interlocked.Decrement(ref rwOperationCount); |
260 | 260 | ||
261 | // we're done with the socket for now, release the reader lock. | 261 | // we're done with the socket for now, release the reader lock. |
262 | rwLock.ReleaseReaderLock(); | 262 | rwLock.ReleaseReaderLock(); |
263 | } | 263 | } |
264 | finally | 264 | finally |
265 | { | 265 | { |
266 | // start another receive - this keeps the server going! | 266 | // start another receive - this keeps the server going! |
267 | AsyncBeginReceive(); | 267 | AsyncBeginReceive(); |
268 | 268 | ||
269 | //wrappedBuffer.Dispose(); | 269 | //wrappedBuffer.Dispose(); |
270 | } | 270 | } |
271 | } | 271 | } |
272 | else | 272 | else |
273 | { | 273 | { |
274 | // nothing bad happened, but we are done with the operation | 274 | // nothing bad happened, but we are done with the operation |
275 | // decrement the reference count and release the reader lock | 275 | // decrement the reference count and release the reader lock |
276 | Interlocked.Decrement(ref rwOperationCount); | 276 | Interlocked.Decrement(ref rwOperationCount); |
277 | rwLock.ReleaseReaderLock(); | 277 | rwLock.ReleaseReaderLock(); |
278 | } | 278 | } |
279 | } | 279 | } |
280 | 280 | ||
281 | public void AsyncBeginSend(UDPPacketBuffer buf) | 281 | public void AsyncBeginSend(UDPPacketBuffer buf) |
282 | { | 282 | { |
283 | rwLock.AcquireReaderLock(-1); | 283 | rwLock.AcquireReaderLock(-1); |
284 | 284 | ||
285 | if (!shutdownFlag) | 285 | if (!shutdownFlag) |
286 | { | 286 | { |
287 | try | 287 | try |
288 | { | 288 | { |
289 | Interlocked.Increment(ref rwOperationCount); | 289 | Interlocked.Increment(ref rwOperationCount); |
290 | udpSocket.BeginSendTo( | 290 | udpSocket.BeginSendTo( |
291 | buf.Data, | 291 | buf.Data, |
292 | 0, | 292 | 0, |
293 | buf.DataLength, | 293 | buf.DataLength, |
294 | SocketFlags.None, | 294 | SocketFlags.None, |
295 | buf.RemoteEndPoint, | 295 | buf.RemoteEndPoint, |
296 | new AsyncCallback(AsyncEndSend), | 296 | new AsyncCallback(AsyncEndSend), |
297 | buf); | 297 | buf); |
298 | } | 298 | } |
299 | catch (SocketException) | 299 | catch (SocketException) |
300 | { | 300 | { |
301 | //Logger.Log( | 301 | //Logger.Log( |
302 | // "A SocketException occurred in UDPServer.AsyncBeginSend()", | 302 | // "A SocketException occurred in UDPServer.AsyncBeginSend()", |
303 | // Helpers.LogLevel.Error, se); | 303 | // Helpers.LogLevel.Error, se); |
304 | } | 304 | } |
305 | } | 305 | } |
306 | 306 | ||
307 | rwLock.ReleaseReaderLock(); | 307 | rwLock.ReleaseReaderLock(); |
308 | } | 308 | } |
309 | 309 | ||
310 | private void AsyncEndSend(IAsyncResult iar) | 310 | private void AsyncEndSend(IAsyncResult iar) |
311 | { | 311 | { |
312 | rwLock.AcquireReaderLock(-1); | 312 | rwLock.AcquireReaderLock(-1); |
313 | 313 | ||
314 | if (!shutdownFlag) | 314 | if (!shutdownFlag) |
315 | { | 315 | { |
316 | UDPPacketBuffer buffer = (UDPPacketBuffer)iar.AsyncState; | 316 | UDPPacketBuffer buffer = (UDPPacketBuffer)iar.AsyncState; |
317 | 317 | ||
318 | try | 318 | try |
319 | { | 319 | { |
320 | int bytesSent = udpSocket.EndSendTo(iar); | 320 | int bytesSent = udpSocket.EndSendTo(iar); |
321 | 321 | ||
322 | // note that call to the abstract PacketSent() method - we are passing the number | 322 | // note that call to the abstract PacketSent() method - we are passing the number |
323 | // of bytes sent in a separate parameter, since we can't use buffer.DataLength which | 323 | // of bytes sent in a separate parameter, since we can't use buffer.DataLength which |
324 | // is the number of bytes to send (or bytes received depending upon whether this | 324 | // is the number of bytes to send (or bytes received depending upon whether this |
325 | // buffer was part of a send or a receive). | 325 | // buffer was part of a send or a receive). |
326 | PacketSent(buffer, bytesSent); | 326 | PacketSent(buffer, bytesSent); |
327 | } | 327 | } |
328 | catch (SocketException) | 328 | catch (SocketException) |
329 | { | 329 | { |
330 | //Logger.Log( | 330 | //Logger.Log( |
331 | // "A SocketException occurred in UDPServer.AsyncEndSend()", | 331 | // "A SocketException occurred in UDPServer.AsyncEndSend()", |
332 | // Helpers.LogLevel.Error, se); | 332 | // Helpers.LogLevel.Error, se); |
333 | } | 333 | } |
334 | } | 334 | } |
335 | 335 | ||
336 | Interlocked.Decrement(ref rwOperationCount); | 336 | Interlocked.Decrement(ref rwOperationCount); |
337 | rwLock.ReleaseReaderLock(); | 337 | rwLock.ReleaseReaderLock(); |
338 | } | 338 | } |
339 | } | 339 | } |
340 | } | 340 | } |