Mercurial > hg > Members > riono > TreeVNC_ja_comment
annotate src/main/java/jp/ac/u_ryukyu/treevnc/MyRfbProto.java @ 89:1503a373ab73
close client correctly in -d mode.
| author | oc |
|---|---|
| date | Fri, 09 May 2014 19:20:33 +0900 |
| parents | a719aa609e14 |
| children | 75879c316796 |
| rev | line source |
|---|---|
| 32 | 1 package jp.ac.u_ryukyu.treevnc; |
| 28 | 2 |
| 45 | 3 import java.io.DataOutputStream; |
| 28 | 4 import java.io.IOException; |
| 5 import java.net.Socket; | |
| 6 import java.nio.ByteBuffer; | |
| 7 import java.util.LinkedList; | |
| 8 import java.util.concurrent.atomic.AtomicInteger; | |
| 9 | |
| 35 | 10 import jp.ac.u_ryukyu.treevnc.client.EchoClient; |
| 28 | 11 import jp.ac.u_ryukyu.treevnc.server.RequestScreenThread; |
| 12 | |
| 13 import com.glavsoft.exceptions.TransportException; | |
| 14 import com.glavsoft.rfb.protocol.Protocol; | |
| 15 import com.glavsoft.rfb.protocol.ProtocolContext; | |
| 16 import com.glavsoft.transport.Reader; | |
| 17 import com.glavsoft.transport.Writer; | |
| 65 | 18 import com.glavsoft.viewer.ViewerImpl; |
| 28 | 19 |
| 20 public class MyRfbProto { | |
|
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21 final static int FramebufferUpdateRequest = 3; |
| 28 | 22 final static int CheckDelay = 11; |
| 23 final static int FramebufferUpdate = 0; | |
| 24 private ProtocolContext context; | |
| 54 | 25 //final static String versionMsg_3_855 = "RFB 003.855\n"; |
| 26 final static String versionMsg_3_856 = "RFB 003.856\n"; | |
| 28 | 27 private int clients; |
| 32 | 28 protected MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MulticastQueue<LinkedList<ByteBuffer>>(); |
| 28 | 29 private RequestScreenThread rThread; |
| 30 private boolean proxyFlag = true; | |
| 35 | 31 private EchoClient echo; |
| 45 | 32 private String proxyAddr; |
| 60 | 33 public int acceptPort; |
| 65 | 34 protected boolean readyReconnect; |
| 35 private boolean cuiVersion; | |
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36 |
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37 public MyRfbProto() { |
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38 rThread = new RequestScreenThread(this); |
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39 } |
| 28 | 40 |
| 41 | |
| 42 public void newClient(AcceptThread acceptThread, final Socket newCli, | |
| 43 final Writer os, final Reader is) throws IOException { | |
| 44 // createBimgFlag = true; | |
| 45 // rfb.addSockTmp(newCli); | |
| 46 // addSock(newCli); | |
| 47 final int myId = clients; | |
| 48 final MulticastQueue.Client<LinkedList<ByteBuffer>> c = multicastqueue.newClient(); | |
| 49 final AtomicInteger writerRunning = new AtomicInteger(); | |
| 50 writerRunning.set(1); | |
| 51 /** | |
| 52 * Timeout thread. If a client is suspended, it has top of queue | |
| 53 * indefinitely, which caused memory overflow. After the timeout, we | |
| 54 * poll the queue and discard it. Start long wait if writer is running. | |
| 55 */ | |
| 56 final Runnable timer = new Runnable() { | |
| 57 public void run() { | |
| 58 int count = 0; | |
| 59 for (;;) { | |
| 60 long timeout = 50000 / 8; | |
| 61 try { | |
| 62 synchronized (this) { | |
| 63 int state, flag; | |
| 64 writerRunning.set(0); | |
| 65 wait(timeout); | |
| 66 flag = 0; | |
| 67 while ((state = writerRunning.get()) == 0) { | |
| 68 c.poll(); // discard, should be timeout | |
| 69 count++; | |
| 70 if (flag == 0) { | |
| 71 System.out.println("Discarding " + myId | |
| 72 + " count=" + count); | |
| 73 flag = 1; | |
| 74 } | |
| 75 wait(10); // if this is too short, writer cannot | |
| 76 // take the poll, if this is too | |
| 77 // long, memory will overflow... | |
| 78 } | |
| 79 if (flag == 1) | |
| 80 System.out.println("Resuming " + myId | |
| 81 + " count=" + count); | |
| 82 if (state != 1) { | |
| 83 System.out.println("Client died " + myId); | |
| 84 break; | |
| 85 } | |
| 86 } | |
| 87 } catch (InterruptedException e) { | |
| 88 } | |
| 89 } | |
| 90 } | |
| 91 }; | |
| 88 | 92 new Thread(timer, "timer-discard-multicastqueue").start(); |
| 28 | 93 /** |
| 94 * discard all incoming from clients | |
| 95 */ | |
| 96 final Runnable reader = new Runnable() { | |
| 97 public void run() { | |
| 98 byte b[] = new byte[4096]; | |
| 99 for (;;) { | |
| 100 try { | |
| 101 int c = is.readByte(b); | |
| 102 if (c <= 0) | |
| 103 throw new IOException(); | |
| 104 // System.out.println("client read "+c); | |
| 89 | 105 } catch (Exception e) { |
| 28 | 106 try { |
| 107 writerRunning.set(2); | |
| 108 os.close(); | |
| 109 is.close(); | |
| 36 | 110 break; |
| 28 | 111 } catch (IOException e1) { |
| 112 } catch (TransportException e1) { | |
| 113 e1.printStackTrace(); | |
| 114 } | |
| 115 return; | |
| 116 } | |
| 117 } | |
| 118 } | |
| 119 }; | |
| 120 /** | |
| 121 * send packets to a client | |
| 122 */ | |
| 123 Runnable sender = new Runnable() { | |
| 124 public void run() { | |
| 125 writerRunning.set(1); | |
| 126 try { | |
| 127 requestThreadNotify(); | |
| 128 | |
| 129 /** | |
| 130 * initial connection of RFB protocol | |
| 131 */ | |
| 132 sendRfbVersion(os); | |
| 133 // readVersionMsg(is); | |
| 134 readVersionMsg(is, os); | |
| 135 sendSecurityType(os); | |
| 136 readSecType(is); | |
| 137 sendSecResult(os); | |
| 138 readClientInit(is); | |
| 139 sendInitData(os); | |
| 88 | 140 // after this, we discard upward packet. |
| 141 new Thread(reader, "discard-upward-comm").start(); | |
| 28 | 142 // writeFramebufferUpdateRequest(0,0, framebufferWidth, |
| 143 // framebufferHeight, false ); | |
| 144 for (;;) { | |
| 145 LinkedList<ByteBuffer> bufs = c.poll(); | |
| 146 int inputIndex = 0; | |
| 147 ByteBuffer header = bufs.get(inputIndex); | |
| 148 if (header == null) | |
| 149 continue; | |
| 150 else if (header.get(0) == CheckDelay) { | |
| 151 writeToClient(os, bufs, inputIndex); | |
| 152 continue; | |
| 153 } else if (header.get(0) == FramebufferUpdate) { | |
| 63 | 154 //System.out.println("client "+ myId); |
| 28 | 155 } |
| 156 /* | |
| 157 * if(i%20==0){ sendDataCheckDelay(); } i++; | |
| 158 */ | |
| 159 writeToClient(os, bufs, inputIndex); | |
| 160 writerRunning.set(1); // yes my client is awaking. | |
| 161 } | |
| 89 | 162 } catch (Exception e) { |
| 28 | 163 try { |
| 164 writerRunning.set(2); | |
| 165 os.close(); | |
| 166 } catch (IOException e1) { | |
| 167 } | |
| 168 /* if socket closed cliList.remove(newCli); */ | |
| 169 } | |
| 170 } | |
| 171 | |
| 172 public void writeToClient(final Writer os, | |
| 173 LinkedList<ByteBuffer> bufs, int inputIndex) | |
| 174 throws TransportException { | |
| 175 while (inputIndex < bufs.size()) { | |
| 176 ByteBuffer b = bufs.get(inputIndex++); | |
| 177 os.write(b.array(), b.position(), b.limit()); | |
| 178 } | |
| 179 os.flush(); | |
| 74 | 180 bufs = null; |
| 181 multicastqueue.heapAvailable(); | |
| 28 | 182 } |
| 183 }; | |
| 184 clients++; | |
| 88 | 185 new Thread(sender, "writer-to-lower-node").start(); |
| 28 | 186 |
| 187 } | |
| 188 | |
| 88 | 189 public void requestThreadNotify() { |
| 28 | 190 rThread.reStart(); |
| 191 } | |
| 192 | |
| 193 private void sendRfbVersion(Writer writer) throws IOException, TransportException { | |
| 194 // os.write(versionMsg_3_8.getBytes()); | |
| 54 | 195 writer.write(versionMsg_3_856.getBytes()); |
| 28 | 196 } |
| 197 | |
| 198 private int readVersionMsg(Reader reader, Writer writer) throws IOException, TransportException { | |
| 199 | |
| 200 byte[] b = new byte[12]; | |
| 201 | |
| 202 reader.readBytes(b); | |
| 203 | |
| 204 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 205 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 206 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 207 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 208 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 209 throw new IOException("this is not an RFB server"); | |
| 210 } | |
| 211 | |
| 212 int rfbMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 213 int rfbMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 214 | |
| 215 if (rfbMajor < 3) { | |
| 216 throw new IOException( | |
| 217 "RFB server does not support protocol version 3"); | |
| 218 } | |
| 219 | |
| 220 if (rfbMinor == 855) { | |
| 221 sendProxyFlag(writer); | |
| 222 if (proxyFlag) | |
| 223 sendPortNumber(writer); | |
| 224 } | |
| 225 return rfbMinor; | |
| 226 } | |
| 45 | 227 |
| 228 public void screenChangeRequest() throws IOException { | |
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229 Socket echoSocket = new Socket(proxyAddr, 10002); |
| 45 | 230 DataOutputStream os = new DataOutputStream(echoSocket.getOutputStream()); |
| 231 os.writeBytes(echo.getMyAddress()+"\n"); | |
| 59 | 232 //os.writeBytes(String.valueOf(echo.client.getFrameWidth())+"\n"); temp comment out for rebuild |
| 233 //os.writeBytes(String.valueOf(echo.client.getFrameHeight())+"\n"); temp comment out for rebuild | |
| 45 | 234 os.close(); |
| 77 | 235 echoSocket.close(); |
| 45 | 236 } |
| 28 | 237 |
| 238 private void sendProxyFlag(Writer writer) throws TransportException { | |
| 239 if (proxyFlag) | |
| 240 writer.writeInt(1); | |
| 241 else | |
| 242 writer.writeInt(0); | |
| 243 } | |
| 244 | |
| 245 private void sendPortNumber(Writer writer) throws TransportException { | |
| 246 byte[] b = new byte[4]; | |
| 247 //b = castIntByte(getHost.getPort()); | |
| 248 b = castIntByte(9999); | |
| 249 writer.write(b); | |
| 250 } | |
| 251 | |
| 252 private byte[] castIntByte(int len) { | |
| 253 byte[] b = new byte[4]; | |
| 254 b[0] = (byte) ((len >>> 24) & 0xFF); | |
| 255 b[1] = (byte) ((len >>> 16) & 0xFF); | |
| 256 b[2] = (byte) ((len >>> 8) & 0xFF); | |
| 257 b[3] = (byte) ((len >>> 0) & 0xFF); | |
| 258 return b; | |
| 259 } | |
| 260 | |
| 45 | 261 |
| 28 | 262 private void readSecType(Reader reader) throws TransportException { |
| 263 byte[] b = new byte[1]; | |
| 264 reader.read(b); | |
| 265 } | |
| 266 | |
| 267 private void sendSecurityType(Writer os) throws TransportException { | |
| 268 // number-of-security-types | |
| 269 os.writeInt(1); | |
| 270 // security-types | |
| 271 // 1:None | |
| 272 os.writeInt(1); | |
| 273 | |
| 274 /* | |
| 275 * os.write(4); os.write(30); os.write(31); os.write(32); os.write(35); | |
| 276 * os.flush(); | |
| 277 */ | |
| 278 } | |
| 279 | |
| 280 private void sendSecResult(Writer os) throws TransportException { | |
| 281 byte[] b = castIntByte(0); | |
| 282 os.write(b); | |
| 283 } | |
| 284 | |
| 285 private void readClientInit(Reader in) throws TransportException { | |
| 286 byte[] b = new byte[0]; | |
| 287 in.readBytes(b); | |
| 288 } | |
| 289 | |
| 85 | 290 byte initData[] = {7, -128, 4, 56, 32, 24, 0, 1, 0, -1, 0, -1, 0, -1, 16, 8, 0, 0, 0, 0, 0, 0, 0, 7, 102, 105, 114, 101, 102, 108, 121}; |
| 28 | 291 private void sendInitData(Writer os) throws TransportException { |
| 85 | 292 // In case of "-d" we have no context |
| 293 if (context != null){ | |
| 294 os.write(context.getInitData()); | |
| 295 } else { | |
| 296 // Send dummy data | |
| 297 os.write(initData); | |
| 298 | |
| 299 } | |
| 28 | 300 } |
| 301 | |
| 302 public void setProtocolContext(Protocol workingProtocol) { | |
| 303 context = workingProtocol; | |
| 304 } | |
| 29 | 305 |
| 306 | |
| 307 public void readSendData(int dataLen, Reader reader) throws TransportException { | |
| 308 | |
| 309 } | |
| 31 | 310 |
| 311 public Socket accept() throws IOException { | |
| 312 return null; | |
| 313 } | |
| 314 | |
| 38 | 315 public int selectPort(int port) { |
| 316 return port; | |
| 31 | 317 } |
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318 |
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319 |
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320 public void writeFramebufferUpdateRequest(int x, int y, int w, int h, |
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321 boolean incremental) throws TransportException { |
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322 byte[] b = new byte[10]; |
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323 |
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324 b[0] = (byte) FramebufferUpdateRequest; // 3 is FrameBufferUpdateRequest |
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325 b[1] = (byte) (incremental ? 1 : 0); |
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326 b[2] = (byte) ((x >> 8) & 0xff); |
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327 b[3] = (byte) (x & 0xff); |
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328 b[4] = (byte) ((y >> 8) & 0xff); |
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329 b[5] = (byte) (y & 0xff); |
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330 b[6] = (byte) ((w >> 8) & 0xff); |
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331 b[7] = (byte) (w & 0xff); |
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332 b[8] = (byte) ((h >> 8) & 0xff); |
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333 b[9] = (byte) (h & 0xff); |
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334 |
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335 // os.write(b); |
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336 } |
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337 |
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338 public void notProxy() { |
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339 proxyFlag = false; |
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340 } |
| 35 | 341 |
| 342 public void setEcho(EchoClient _echo) { | |
| 343 echo = _echo; | |
| 344 } | |
| 345 | |
| 65 | 346 public void setViewer(ViewerImpl v) { |
| 36 | 347 echo.setViewer(v); |
| 348 } | |
| 349 | |
| 65 | 350 public ViewerImpl getViewer() { |
| 351 return echo.getViewer(); | |
| 352 } | |
| 353 | |
| 35 | 354 public EchoClient getEcho() { |
| 355 return echo; | |
| 356 } | |
| 43 | 357 |
| 358 public void setTerminationType(boolean setType) { | |
| 359 /*nop*/ | |
| 360 } | |
| 361 | |
| 362 public boolean getTerminationType() { | |
| 363 /*nop*/ | |
| 364 return true; | |
| 365 } | |
| 45 | 366 |
| 367 public void setProxyAddr(String proxyAddr) { | |
| 368 this.proxyAddr = proxyAddr; | |
| 369 } | |
| 52 | 370 |
| 371 | |
| 372 public void close() { | |
| 373 //nothing | |
| 374 } | |
| 45 | 375 |
| 60 | 376 public int getAcceptPort() { |
| 377 return 0; | |
| 378 } | |
| 379 | |
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380 public boolean getReadyReconnect() { |
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381 return readyReconnect; |
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382 } |
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383 |
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384 public void setReadyReconnect(boolean ready) { |
| 65 | 385 } |
| 386 | |
| 387 | |
| 388 public boolean getCuiVersion() { | |
| 389 return cuiVersion; | |
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390 } |
| 65 | 391 |
| 392 public void setCuiVersion(boolean flag) { | |
| 393 cuiVersion = flag; | |
| 394 } | |
| 66 | 395 |
| 396 public void readCheckDelay(Reader reader) throws TransportException { | |
| 397 | |
| 398 } | |
| 399 | |
| 400 public String getProxyAddr() { | |
| 401 return proxyAddr; | |
| 402 } | |
| 65 | 403 |
| 28 | 404 } |