Mercurial > hg > Applications > TightVNC_orginal
annotate src/main/java/jp/ac/u_ryukyu/treevnc/client/MyRfbProtoClient.java @ 28:18fad65bc447
Create MyRfbProto.java
MyRfbProto.java is a summary of the intersection of MyRfbClient and MyRfbProxy.
| author | one |
|---|---|
| date | Sat, 01 Sep 2012 19:24:07 +0900 |
| parents | 98519d16a8c3 |
| children | 57eb5575e6c4 |
| rev | line source |
|---|---|
| 12 | 1 package jp.ac.u_ryukyu.treevnc.client; |
| 3 | 2 |
| 3 import java.io.DataInputStream; | |
| 4 import java.io.IOException; | |
| 5 import java.io.InputStream; | |
| 6 import java.io.OutputStream; | |
| 4 | 7 import java.net.BindException; |
| 8 import java.net.ServerSocket; | |
| 3 | 9 import java.net.Socket; |
| 10 import java.nio.ByteBuffer; | |
| 4 | 11 import java.util.LinkedList; |
| 12 import java.util.concurrent.atomic.AtomicInteger; | |
| 13 import java.util.zip.DataFormatException; | |
| 14 import java.util.zip.Deflater; | |
| 15 import java.util.zip.Inflater; | |
| 3 | 16 |
| 12 | 17 import jp.ac.u_ryukyu.treevnc.MulticastQueue; |
| 28 | 18 import jp.ac.u_ryukyu.treevnc.test.MyRfbProto; |
| 12 | 19 |
| 3 | 20 |
| 21 import com.glavsoft.exceptions.TransportException; | |
| 4 | 22 import com.glavsoft.rfb.encoding.EncodingType; |
|
20
98519d16a8c3
getInitData from ProtocolContext
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
12
diff
changeset
|
23 import com.glavsoft.rfb.protocol.ProtocolContext; |
| 3 | 24 import com.glavsoft.transport.Reader; |
| 25 import com.glavsoft.viewer.ContainerManager; | |
| 26 import com.glavsoft.viewer.swing.ParametersHandler.ConnectionParams; | |
| 27 | |
| 28 | 28 public class MyRfbProtoClient extends MyRfbProto { |
| 4 | 29 final static int FramebufferUpdate = 0; |
| 30 final static int CheckDelay = 11; | |
| 31 final static String versionMsg_3_855 = "RFB 003.855\n"; | |
| 32 private static final int INFLATE_BUFSIZE = 1024*100; | |
| 3 | 33 private Reader reader; |
| 34 private EchoClient echoValue = new EchoClient(); | |
| 35 private String host,treenum,parent,pHost,leaderflag; | |
| 4 | 36 private int echoPort,port,acceptPort; |
| 3 | 37 Socket clientSocket,sock; |
| 38 DataInputStream is; | |
| 39 OutputStream os; | |
| 40 private ContainerManager containerManager; | |
| 4 | 41 private ServerSocket servSock; |
|
20
98519d16a8c3
getInitData from ProtocolContext
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
12
diff
changeset
|
42 private ProtocolContext context; |
| 4 | 43 private int clients = 0; |
| 44 private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MulticastQueue<LinkedList<ByteBuffer>>(); | |
| 45 boolean proxyFlag = false; | |
| 46 int serverMajor, serverMinor; | |
| 47 int clientMajor, clientMinor; | |
| 3 | 48 |
| 4 | 49 private Inflater inflater = new Inflater(); |
| 50 private Deflater deflater = new Deflater(); | |
| 3 | 51 |
| 52 public MyRfbProtoClient(Reader reader,String host,String port) { | |
| 53 this.reader = reader; | |
| 54 } | |
| 55 | |
| 56 public void setParam(ConnectionParams connectionParams) { | |
| 57 pHost = connectionParams.hostName; | |
| 58 echoPort = connectionParams.portNumber; | |
| 59 } | |
| 60 | |
| 61 public boolean readProxyFlag() throws TransportException { | |
| 62 int flag = reader.readUInt8(); | |
| 63 if(flag == 1) | |
| 64 return true; | |
| 65 else | |
| 66 return false; | |
| 67 } | |
| 68 | |
| 69 public byte[] readEchoPort() throws Exception { | |
| 70 byte[] b = new byte[4]; | |
| 71 reader.readBytes(b, 0, b.length); | |
| 72 //readFully(b); | |
| 73 return b; | |
| 74 } | |
| 75 | |
| 76 public void getParentName() { | |
| 77 if (echoValue == null) { | |
| 78 | |
| 79 if (clientSocket == null) { | |
| 80 | |
| 81 // echo = new EchoClient(pHost, this); | |
| 82 echoValue = new EchoClient(pHost, echoPort); | |
| 83 echoValue.openport(); | |
| 84 | |
| 85 echoValue = echoValue.requestHostName("1"); | |
| 86 } else { | |
| 87 echoValue = new EchoClient(); | |
| 88 echoValue = echoValue.Interruption(clientSocket); | |
| 89 } | |
| 90 } | |
| 91 // proxyからの返信で接続先を決定する | |
| 92 host = echoValue.responseLine; | |
| 93 parent = echoValue.parent; | |
| 94 if (echoValue.treenum != null) { | |
| 95 treenum = echoValue.treenum; | |
| 96 } else { | |
| 97 treenum = echoValue.treenum; | |
| 98 } | |
| 99 | |
| 100 if (echoValue.leaderflag != null) { | |
| 101 leaderflag = echoValue.leaderflag; | |
| 102 } else { | |
| 103 leaderflag = echoValue.leaderflag; | |
| 104 } | |
| 105 } | |
| 106 | |
| 107 int castByteInt(byte[] b) { | |
| 108 ByteBuffer bb = ByteBuffer.wrap(b); | |
| 109 int value = bb.getInt(); | |
| 110 return value; | |
| 111 } | |
| 112 | |
| 113 Socket changeParent(String host, int port) throws IOException { | |
| 114 sock = new Socket(host, port); | |
| 115 return sock; | |
| 116 } | |
| 117 | |
| 4 | 118 public Socket accept() throws IOException { |
| 119 return servSock.accept(); | |
| 120 } | |
| 121 | |
| 122 void initServSock(int port) throws IOException { | |
| 123 servSock = new ServerSocket(port); | |
| 124 acceptPort = port; | |
| 125 } | |
| 126 | |
| 127 public void selectPort(int p) { | |
| 128 int port = p; | |
| 129 while (true) { | |
| 130 try { | |
| 131 initServSock(port); | |
| 132 break; | |
| 133 } catch (BindException e) { | |
| 134 port++; | |
| 135 continue; | |
| 136 } catch (IOException e) { | |
| 137 | |
| 138 } | |
| 139 } | |
| 140 System.out.println("accept port = " + port); | |
| 141 } | |
| 142 | |
| 143 public void newClient(AcceptThread acceptThread, final Socket newCli, | |
| 144 final OutputStream os, final InputStream is) throws IOException { | |
| 145 // createBimgFlag = true; | |
| 146 // rfb.addSockTmp(newCli); | |
| 147 // addSock(newCli); | |
| 148 final int myId = clients; | |
| 149 final MulticastQueue.Client <LinkedList<ByteBuffer>> c = multicastqueue.newClient(); | |
| 150 final AtomicInteger writerRunning = new AtomicInteger(); | |
| 151 writerRunning.set(1); | |
| 152 /** | |
| 153 * Timeout thread. If a client is suspended, it has top of queue indefinitely, which caused memory | |
| 154 * overflow. After the timeout, we poll the queue and discard it. Start long wait if writer is running. | |
| 155 */ | |
| 156 final Runnable timer = new Runnable() { | |
| 157 public void run() { | |
| 158 int count = 0; | |
| 159 for(;;) { | |
| 160 long timeout = 40000/8; | |
| 161 try { | |
| 162 synchronized(this) { | |
| 163 int state,flag; | |
| 164 writerRunning.set(0); | |
| 165 wait(timeout); | |
| 166 flag = 0; | |
| 167 while((state=writerRunning.get())==0) { | |
| 168 c.poll(); // discard, should be timeout | |
| 169 count++; | |
| 170 if (flag==0) { | |
| 171 System.out.println("Discarding "+myId + " count="+ count); flag = 1; | |
| 172 } | |
| 173 wait(10); // if this is too short, writer cannot take the poll, if this is too long, memory will overflow... | |
| 174 } | |
| 175 if (flag==1) System.out.println("Resuming "+myId + " count="+count); | |
| 176 if (state!=1) { | |
| 177 System.out.println("Client died "+myId); | |
| 178 break; | |
| 179 } | |
| 180 } | |
| 181 } catch (InterruptedException e) { | |
| 182 } | |
| 183 } | |
| 184 } | |
| 185 }; | |
| 186 new Thread(timer).start(); | |
| 187 /** | |
| 188 * discard all incoming from clients | |
| 189 */ | |
| 190 final Runnable reader = new Runnable() { | |
| 191 public void run() { | |
| 192 byte b[] = new byte[4096]; | |
| 193 for(;;) { | |
| 194 try { | |
| 195 int c = is.read(b); | |
| 196 if (c<=0) throw new IOException(); | |
| 197 // System.out.println("client read "+c); | |
| 198 } catch (IOException e) { | |
| 199 try { | |
| 200 writerRunning.set(2); | |
| 201 os.close(); | |
| 202 is.close(); | |
| 203 } catch (IOException e1) { | |
| 204 } | |
| 205 return; | |
| 206 } | |
| 207 } | |
| 208 } | |
| 209 }; | |
| 210 /** | |
| 211 * send packets to a client | |
| 212 */ | |
| 213 Runnable sender = new Runnable() { | |
| 214 public void run() { | |
| 215 writerRunning.set(1); | |
| 216 try { | |
| 217 /** | |
| 218 * initial connection of RFB protocol | |
| 219 */ | |
| 220 sendRfbVersion(os); | |
| 221 // readVersionMsg(is); | |
| 222 int rfbMinor = readVersionMsg(is,os); | |
| 223 sendSecurityType(os); | |
| 224 readSecType(is); | |
| 225 sendSecResult(os); | |
| 226 readClientInit(is); | |
| 227 sendInitData(os); | |
| 228 new Thread(reader).start(); // discard incoming packet here after. | |
| 229 if(rfbMinor == 855){ | |
| 230 //checkDilay(os); | |
| 231 // send jpeg data of full screen. | |
| 232 // sendFullScreen("jpeg" ,os); | |
| 233 } else { | |
| 234 // send raw data of full screen. | |
| 235 | |
| 236 } | |
| 237 for (;;) { | |
| 238 LinkedList<ByteBuffer> bufs = c.poll(); | |
| 239 int inputIndex = 0; | |
| 240 ByteBuffer header = bufs.get(inputIndex); | |
| 241 if (header==null) continue; | |
| 242 if (header.get(0)==CheckDelay) { | |
| 243 System.out.println("--------------------"); | |
| 244 //writeToClient(os, bufs, inputIndex); | |
| 245 } | |
| 246 if (header.get(0)==FramebufferUpdate) { | |
| 247 // System.out.println("client "+ myId); | |
| 248 } | |
| 249 writeToClient(os, bufs, inputIndex); | |
| 250 writerRunning.set(1); // yes my client is awaking. | |
| 251 } | |
| 252 } catch (IOException e) { | |
| 253 try { | |
| 254 writerRunning.set(2); | |
| 255 os.close(); | |
| 256 } catch (IOException e1) { | |
| 257 /* if socket closed cliList.remove(newCli); */ | |
| 258 } | |
| 259 } | |
| 260 } | |
| 261 | |
| 262 public void writeToClient(final OutputStream os, | |
| 263 LinkedList<ByteBuffer> bufs, int inputIndex) | |
| 264 throws IOException { | |
| 265 while(inputIndex < bufs.size()) { | |
| 266 ByteBuffer b = bufs.get(inputIndex++); | |
| 267 os.write(b.array(), b.position(), b.limit()); | |
| 268 } | |
| 269 os.flush(); | |
| 270 } | |
| 271 }; | |
| 272 clients++; | |
| 273 new Thread(sender).start(); | |
| 274 | |
| 275 } | |
| 276 | |
| 277 void sendRfbVersion(OutputStream os) throws IOException { | |
| 278 os.write(versionMsg_3_855.getBytes()); | |
| 279 // os.write(versionMsg_3_8.getBytes()); | |
| 280 } | |
| 281 int readVersionMsg(InputStream is, OutputStream os) throws IOException { | |
| 282 | |
| 283 byte[] b = new byte[12]; | |
| 284 | |
| 285 is.read(b); | |
| 286 | |
| 287 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 288 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 289 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 290 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 291 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 292 throw new IOException("Host " + host + " port " + port | |
| 293 + " is not an RFB server"); | |
| 294 } | |
| 295 | |
| 296 int rfbMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 297 int rfbMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 298 | |
| 299 if (rfbMajor < 3) { | |
| 300 throw new IOException( | |
| 301 "RFB server does not support protocol version 3"); | |
| 302 } | |
| 303 | |
| 304 if (rfbMinor == 855) { | |
| 305 sendProxyFlag(os); | |
| 306 // if(proxyFlag)sendPortNumber(os); | |
| 307 } | |
| 308 return rfbMinor; | |
| 309 | |
| 310 } void readVersionMsg(InputStream is) throws IOException { | |
| 311 | |
| 312 byte[] b = new byte[12]; | |
| 313 | |
| 314 is.read(b); | |
| 315 | |
| 316 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 317 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 318 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 319 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 320 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 321 throw new IOException("Host " + host + " port " + port | |
| 322 + " is not an RFB server"); | |
| 323 } | |
| 324 | |
| 325 serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 326 serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 327 | |
| 328 if (serverMajor < 3) { | |
| 329 throw new IOException( | |
| 330 "RFB server does not support protocol version 3"); | |
| 331 } | |
| 332 | |
| 333 } | |
| 334 | |
| 335 void sendSecurityType(OutputStream os) throws IOException { | |
| 336 // number-of-security-types | |
| 337 os.write(1); | |
| 338 // security-types | |
| 339 // 1:None | |
| 340 os.write(1); | |
| 341 } | |
| 342 void readSecType(InputStream is) throws IOException { | |
| 343 byte[] b = new byte[1]; | |
| 344 is.read(b); | |
| 345 | |
| 346 } | |
| 347 | |
| 348 void sendSecResult(OutputStream os) throws IOException { | |
| 349 byte[] b = castIntByte(0); | |
| 350 os.write(b); | |
| 351 } | |
| 352 | |
| 353 void readClientInit(InputStream in) throws IOException { | |
| 354 byte[] b = new byte[0]; | |
| 355 in.read(b); | |
| 356 } | |
| 357 | |
| 358 void sendInitData(OutputStream os) throws IOException { | |
|
20
98519d16a8c3
getInitData from ProtocolContext
Shinji KONO <kono@ie.u-ryukyu.ac.jp>
parents:
12
diff
changeset
|
359 os.write(context.getInitData()); |
| 4 | 360 } |
| 361 | |
| 362 void sendProxyFlag(OutputStream os) throws IOException { | |
| 363 if(proxyFlag) os.write(1); | |
| 364 else os.write(0); | |
| 365 } | |
| 366 | |
| 367 byte[] castIntByte(int len) { | |
| 368 byte[] b = new byte[4]; | |
| 369 b[0] = (byte) ((len >>> 24) & 0xFF); | |
| 370 b[1] = (byte) ((len >>> 16) & 0xFF); | |
| 371 b[2] = (byte) ((len >>> 8) & 0xFF); | |
| 372 b[3] = (byte) ((len >>> 0) & 0xFF); | |
| 373 return b; | |
| 374 } | |
| 375 | |
| 376 /** | |
| 377 * gzip byte arrays | |
| 378 * @param deflater | |
| 379 * @param inputs | |
| 380 * byte data[] | |
| 381 * @param inputIndex | |
| 382 * @param outputs | |
| 383 * byte data[] | |
| 384 * @return byte length in last byte array | |
| 385 * @throws IOException | |
| 386 */ | |
| 387 public int zip(Deflater deflater,LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs) throws IOException { | |
| 388 int len = 0; | |
| 389 ByteBuffer c1= ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 390 while(inputIndex < inputs.size() ) { | |
| 391 ByteBuffer b1 = inputs.get(inputIndex++); | |
| 392 deflater.setInput(b1.array(),b1.position(),b1.remaining()); | |
| 393 /** | |
| 394 * If we finish() stream and reset() it, Deflater start new gzip stream, this makes continuous zlib reader unhappy. | |
| 395 * if we remove finish(), Deflater.deflate() never flushes its output. The original zlib deflate has flush flag. I'm pretty | |
| 396 * sure this a kind of bug of Java library. | |
| 397 */ | |
| 398 if (inputIndex==inputs.size()) | |
| 399 deflater.finish(); | |
| 400 int len1 = 0; | |
| 401 do { | |
| 402 len1 = deflater.deflate(c1.array(),c1.position(),c1.remaining()); | |
| 403 if (len1>0) { | |
| 404 len += len1; | |
| 405 c1.position(c1.position()+len1); | |
| 406 if (c1.remaining()==0) { | |
| 407 c1.flip(); outputs.addLast(c1); | |
| 408 c1 = ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 409 } | |
| 410 } | |
| 411 } while (len1 >0 || !deflater.needsInput()); // &&!deflater.finished()); | |
| 412 } | |
| 413 if (c1.position()!=0) { | |
| 414 c1.flip(); outputs.addLast(c1); | |
| 415 } | |
| 416 deflater.reset(); | |
| 417 return len; | |
| 418 } | |
| 419 | |
| 420 | |
| 421 /** | |
| 422 * gunzip byte arrays | |
| 423 * @param inflater | |
| 424 * @param inputs | |
| 425 * byte data[] | |
| 426 * @param outputs | |
| 427 * byte data[] | |
| 428 *@return number of total bytes | |
| 429 * @throws IOException | |
| 430 */ | |
| 431 public int unzip(Inflater inflater, LinkedList<ByteBuffer> inputs, | |
| 432 int inputIndex, LinkedList<ByteBuffer> outputs, int bufSize) | |
| 433 throws DataFormatException { | |
| 434 int len = 0; | |
| 435 ByteBuffer buf = ByteBuffer.allocate(bufSize); | |
| 436 while (inputIndex < inputs.size()) { | |
| 437 ByteBuffer input = inputs.get(inputIndex++); | |
| 438 inflater.setInput(input.array(), input.position(), input.limit()); | |
| 439 // if (inputIndex==inputs.size()) if inflater/deflater has symmetry, | |
| 440 // we need this | |
| 441 // inflater.end(); but this won't work | |
| 442 do { | |
| 443 int len0 = inflater.inflate(buf.array(), buf.position(), | |
| 444 buf.remaining()); | |
| 445 if (len0 > 0) { | |
| 446 buf.position(buf.position() + len0); | |
| 447 len += len0; | |
| 448 if (buf.remaining() == 0) { | |
| 449 buf.flip(); | |
| 450 outputs.addLast(buf); | |
| 451 buf = ByteBuffer.allocate(bufSize); | |
| 452 } | |
| 453 } | |
| 454 } while (!inflater.needsInput()); | |
| 455 } | |
| 456 if (buf.position() != 0) { | |
| 457 buf.flip(); | |
| 458 outputs.addLast(buf); | |
| 459 } | |
| 460 return len; | |
| 461 } | |
| 462 | |
| 463 void readSendData(int dataLen,Reader reader) throws IOException, DataFormatException, TransportException { | |
| 464 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); | |
| 465 ByteBuffer header = ByteBuffer.allocate(16); | |
| 466 reader.readBytes(header.array(),0,16); | |
| 467 header.limit(16); | |
| 468 if (header.get(0)==FramebufferUpdate) { | |
| 469 int encoding = header.getInt(12); | |
| 470 if (encoding==EncodingType.ZRLE.getId()||encoding==EncodingType.ZLIB.getId()) { // ZRLEE is already recompressed | |
| 471 ByteBuffer len = ByteBuffer.allocate(4); | |
| 472 reader.readBytes(len.array(),0,4); len.limit(4); | |
| 473 ByteBuffer inputData = ByteBuffer.allocate(dataLen-20); | |
| 474 reader.readBytes(inputData.array(),0,inputData.capacity()); inputData.limit(dataLen-20); | |
| 475 LinkedList<ByteBuffer>inputs = new LinkedList<ByteBuffer>(); | |
| 476 inputs.add(inputData); | |
| 477 | |
| 478 header.putInt(12, EncodingType.ZRLEE.getId()); // means recompress every time | |
| 479 // using new Deflecter every time is incompatible with the protocol, clients have to be modified. | |
| 480 Deflater nDeflater = deflater; // new Deflater(); | |
| 481 LinkedList<ByteBuffer> out = new LinkedList<ByteBuffer>(); | |
| 482 unzip(inflater, inputs, 0 , out, INFLATE_BUFSIZE); | |
| 483 // dump32(inputs); | |
| 484 int len2 = zip(nDeflater, out, 0, bufs); | |
| 485 ByteBuffer blen = ByteBuffer.allocate(4); blen.putInt(len2); blen.flip(); | |
| 486 bufs.addFirst(blen); | |
| 487 | |
| 488 bufs.addFirst(header); | |
| 489 multicastqueue.put(bufs); | |
| 490 is.reset(); | |
| 491 return ; | |
| 492 } | |
| 493 } | |
| 494 bufs.add(header); | |
| 495 if (dataLen>16) { | |
| 496 ByteBuffer b = ByteBuffer.allocate(dataLen-16); | |
| 497 reader.readBytes(b.array(),0,dataLen-16); b.limit(dataLen-16); | |
| 498 bufs.add(b); | |
| 499 } | |
| 500 multicastqueue.put(bufs); | |
| 501 is.reset(); | |
| 502 | |
| 503 // It may be compressed. We can inflate here to avoid repeating clients decompressing here, | |
| 504 // but it may generate too many large data. It is better to do it in each client. | |
| 505 // But we have do inflation for all input data, so we have to do it here. | |
| 506 } | |
| 507 | |
| 508 | |
| 509 | |
| 3 | 510 } |