Mercurial > hg > Members > nobuyasu > tightVNCClient
annotate src/myVncClient/MyRfbProto.java @ 71:f6cb1edc2036
modify EchoClient.java. System.exit(0)
| author | e085711 |
|---|---|
| date | Mon, 29 Aug 2011 01:39:15 +0900 |
| parents | 1f05b73b15df |
| children | ec66d1d4dca0 |
| rev | line source |
|---|---|
| 17 | 1 package myVncClient; |
| 45 | 2 |
| 69 | 3 |
| 19 | 4 import java.awt.Graphics; |
| 5 import java.awt.Image; | |
| 18 | 6 import java.awt.image.BufferedImage; |
| 65 | 7 import java.io.BufferedInputStream; |
| 19 | 8 import java.io.BufferedOutputStream; |
| 15 | 9 import java.io.BufferedReader; |
| 18 | 10 import java.io.ByteArrayInputStream; |
| 19 | 11 import java.io.ByteArrayOutputStream; |
| 65 | 12 import java.io.DataInputStream; |
| 7 | 13 import java.io.IOException; |
| 27 | 14 import java.io.InputStream; |
| 15 | 15 import java.io.InputStreamReader; |
| 18 | 16 import java.net.BindException; |
| 10 | 17 import java.net.ServerSocket; |
| 7 | 18 import java.net.Socket; |
| 69 | 19 import java.net.UnknownHostException; |
| 60 | 20 import java.nio.ByteBuffer; |
| 21 import java.util.Iterator; | |
| 10 | 22 import java.util.LinkedList; |
| 8 | 23 |
| 18 | 24 import javax.imageio.ImageIO; |
| 25 | |
| 45 | 26 import myVncClient.MulticastQueue.Client; |
| 27 | |
| 25 | 28 import java.util.concurrent.ExecutorService; |
| 69 | 29 import java.util.concurrent.atomic.AtomicBoolean; |
| 30 import java.util.concurrent.atomic.AtomicInteger; | |
| 60 | 31 import java.util.zip.DataFormatException; |
| 32 import java.util.zip.Deflater; | |
| 33 import java.util.zip.Inflater; | |
| 25 | 34 import java.io.OutputStream; |
| 7 | 35 |
| 60 | 36 public |
| 69 | 37 class MyRfbProto extends RfbProto { |
| 27 | 38 final static String versionMsg_3_998 = "RFB 003.998\n"; |
| 60 | 39 /** |
| 40 * CheckMillis is one of new msgType for RFB 3.998. | |
| 41 */ | |
| 42 final static byte SpeedCheckMillis = 4; | |
| 43 private static final int INFLATE_BUFSIZE = 1024*100; | |
| 44 boolean printStatusFlag = false; | |
| 45 long startCheckTime; | |
| 45 | 46 |
| 15 | 47 private int messageType; |
| 48 private int rectangles; | |
| 19 | 49 private int rectX; |
| 50 private int rectY; | |
| 51 private int rectW; | |
| 52 private int rectH; | |
| 15 | 53 private int encoding; |
| 19 | 54 private int zLen; |
| 69 | 55 private boolean clicomp = false; |
| 15 | 56 |
| 19 | 57 private ServerSocket servSock; |
| 18 | 58 private int acceptPort; |
| 8 | 59 private byte initData[]; |
| 45 | 60 private LinkedList<Socket> cliListTmp; |
| 61 private LinkedList<Socket> cliList; | |
| 19 | 62 boolean createBimgFlag; |
| 34 | 63 |
| 25 | 64 ExecutorService executor; |
| 45 | 65 |
| 18 | 66 byte[] pngBytes; |
| 45 | 67 |
| 60 | 68 // private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MostRecentMultiCast<LinkedList<ByteBuffer>>(10); |
| 69 private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MulticastQueue<LinkedList<ByteBuffer>>(); | |
| 70 private int clients = 0; | |
| 71 private Inflater inflater = new Inflater(); | |
| 69 | 72 private Deflater deflater = new Deflater(); |
| 45 | 73 |
| 69 | 74 public |
| 75 MyRfbProto() throws IOException { | |
| 76 } | |
| 77 | |
| 45 | 78 MyRfbProto(String h, int p, VncViewer v) throws IOException { |
| 7 | 79 super(h, p, v); |
| 45 | 80 cliList = new LinkedList<Socket>(); |
| 81 cliListTmp = new LinkedList<Socket>(); | |
| 19 | 82 createBimgFlag = false; |
| 45 | 83 // sendThreads = new LinkedList<Thread>(); |
| 84 // executor = Executors.newCachedThreadPool(); | |
| 85 // executor = Executors.newSingleThreadExecutor(); | |
| 10 | 86 } |
| 87 | |
| 15 | 88 MyRfbProto(String h, int p) throws IOException { |
| 89 super(h, p); | |
| 45 | 90 cliList = new LinkedList<Socket>(); |
| 91 cliListTmp = new LinkedList<Socket>(); | |
| 19 | 92 createBimgFlag = false; |
| 45 | 93 // sendThreads = new LinkedList<Thread>(); |
| 94 // executor = Executors.newCachedThreadPool(); | |
| 95 // executor = Executors.newSingleThreadExecutor(); | |
| 15 | 96 } |
| 69 | 97 void changeParent(String h, int p) throws IOException { |
| 98 host = h; | |
| 99 port = p; | |
| 100 | |
| 101 sock = new Socket(host, port); | |
| 102 is = new DataInputStream(new BufferedInputStream(sock.getInputStream(), | |
| 103 16384)); | |
| 104 os = sock.getOutputStream(); | |
| 105 | |
| 106 timing = false; | |
| 107 timeWaitedIn100us = 5; | |
| 108 timedKbits = 0; | |
| 109 } | |
| 110 | |
| 28 | 111 // over write |
| 27 | 112 void writeVersionMsg() throws IOException { |
| 113 clientMajor = 3; | |
| 114 if (serverMinor >= 9) { | |
| 45 | 115 clientMinor = 9; |
| 116 os.write(versionMsg_3_998.getBytes()); | |
| 27 | 117 } else if (serverMajor > 3 || serverMinor >= 8) { |
| 118 clientMinor = 8; | |
| 119 os.write(versionMsg_3_8.getBytes()); | |
| 120 } else if (serverMinor >= 9) { | |
| 121 clientMinor = 9; | |
| 122 os.write(versionMsg_3_998.getBytes()); | |
| 123 } else if (serverMinor >= 7) { | |
| 124 clientMinor = 7; | |
| 125 os.write(versionMsg_3_7.getBytes()); | |
| 126 } else { | |
| 127 clientMinor = 3; | |
| 128 os.write(versionMsg_3_3.getBytes()); | |
| 129 } | |
| 130 protocolTightVNC = false; | |
| 131 initCapabilities(); | |
| 132 } | |
| 133 | |
| 45 | 134 void initServSock(int port) throws IOException { |
| 10 | 135 servSock = new ServerSocket(port); |
| 18 | 136 acceptPort = port; |
| 137 } | |
| 45 | 138 |
| 69 | 139 // 5550を開けるが、開いてないなら+1のポートを開ける。 |
| 60 | 140 void selectPort(int p) { |
| 141 int port = p; | |
| 45 | 142 while (true) { |
| 143 try { | |
| 60 | 144 initServSock(port); |
| 18 | 145 break; |
| 45 | 146 } catch (BindException e) { |
| 60 | 147 port++; |
| 18 | 148 continue; |
| 45 | 149 } catch (IOException e) { |
| 19 | 150 |
| 18 | 151 } |
| 152 } | |
| 60 | 153 System.out.println("accept port = " + port); |
| 18 | 154 } |
| 45 | 155 |
| 156 int getAcceptPort() { | |
| 18 | 157 return acceptPort; |
| 7 | 158 } |
| 45 | 159 |
| 10 | 160 void setSoTimeout(int num) throws IOException { |
| 161 servSock.setSoTimeout(num); | |
| 162 } | |
| 45 | 163 |
| 10 | 164 Socket accept() throws IOException { |
| 165 return servSock.accept(); | |
| 166 } | |
| 167 | |
| 45 | 168 void addSock(Socket sock) { |
| 10 | 169 cliList.add(sock); |
| 170 } | |
| 45 | 171 |
| 172 void addSockTmp(Socket sock) { | |
| 173 System.out.println("connected " + sock.getInetAddress()); | |
| 19 | 174 cliListTmp.add(sock); |
| 175 } | |
| 45 | 176 |
| 8 | 177 boolean markSupported() { |
| 7 | 178 return is.markSupported(); |
| 179 } | |
| 45 | 180 |
| 8 | 181 void readServerInit() throws IOException { |
| 45 | 182 |
| 60 | 183 is.mark(255); |
| 8 | 184 skipBytes(20); |
| 185 int nlen = readU32(); | |
| 45 | 186 int blen = 20 + 4 + nlen; |
| 10 | 187 initData = new byte[blen]; |
| 60 | 188 is.reset(); |
| 10 | 189 |
| 60 | 190 is.mark(blen); |
| 8 | 191 readFully(initData); |
| 60 | 192 is.reset(); |
| 45 | 193 |
| 7 | 194 framebufferWidth = readU16(); |
| 195 framebufferHeight = readU16(); | |
| 196 bitsPerPixel = readU8(); | |
| 197 depth = readU8(); | |
| 198 bigEndian = (readU8() != 0); | |
| 199 trueColour = (readU8() != 0); | |
| 200 redMax = readU16(); | |
| 201 greenMax = readU16(); | |
| 202 blueMax = readU16(); | |
| 203 redShift = readU8(); | |
| 204 greenShift = readU8(); | |
| 205 blueShift = readU8(); | |
| 8 | 206 byte[] pad = new byte[3]; |
| 207 readFully(pad); | |
| 208 int nameLength = readU32(); | |
| 209 byte[] name = new byte[nameLength]; | |
| 210 readFully(name); | |
| 211 desktopName = new String(name); | |
| 7 | 212 |
| 8 | 213 // Read interaction capabilities (TightVNC protocol extensions) |
| 214 if (protocolTightVNC) { | |
| 215 int nServerMessageTypes = readU16(); | |
| 216 int nClientMessageTypes = readU16(); | |
| 217 int nEncodingTypes = readU16(); | |
| 218 readU16(); | |
| 219 readCapabilityList(serverMsgCaps, nServerMessageTypes); | |
| 220 readCapabilityList(clientMsgCaps, nClientMessageTypes); | |
| 221 readCapabilityList(encodingCaps, nEncodingTypes); | |
| 222 } | |
| 223 | |
| 224 inNormalProtocol = true; | |
| 7 | 225 } |
| 226 | |
| 45 | 227 void sendRfbVersion(OutputStream os) throws IOException { |
| 228 os.write(versionMsg_3_998.getBytes()); | |
| 27 | 229 } |
| 45 | 230 |
| 28 | 231 void readVersionMsg(InputStream is) throws IOException { |
| 232 | |
| 233 byte[] b = new byte[12]; | |
| 234 | |
| 235 is.read(b); | |
| 236 | |
| 237 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 238 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 239 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 240 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 241 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 242 throw new IOException("Host " + host + " port " + port | |
| 243 + " is not an RFB server"); | |
| 244 } | |
| 245 | |
| 246 serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 247 serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 248 | |
| 249 if (serverMajor < 3) { | |
| 250 throw new IOException( | |
| 251 "RFB server does not support protocol version 3"); | |
| 45 | 252 } |
| 253 | |
| 254 } | |
| 255 | |
| 27 | 256 void sendSecurityType(OutputStream os) throws IOException { |
| 257 // number-of-security-types | |
| 258 os.write(1); | |
| 45 | 259 // security-types |
| 27 | 260 // 1:None |
| 261 os.write(1); | |
| 262 } | |
| 45 | 263 |
| 28 | 264 void readSecType(InputStream is) throws IOException { |
| 265 byte[] b = new byte[1]; | |
| 266 is.read(b); | |
| 267 | |
| 268 } | |
| 45 | 269 |
| 28 | 270 void sendSecResult(OutputStream os) throws IOException { |
| 271 byte[] b = castIntByte(0); | |
| 272 os.write(b); | |
| 273 } | |
| 45 | 274 |
| 27 | 275 void readClientInit(InputStream in) throws IOException { |
| 276 byte[] b = new byte[0]; | |
| 277 in.read(b); | |
| 278 } | |
| 45 | 279 |
| 280 void sendInitData(OutputStream os) throws IOException { | |
| 281 os.write(initData); | |
| 8 | 282 } |
| 10 | 283 |
| 45 | 284 |
| 285 void sendPngImage() { | |
| 286 try { | |
| 287 for (Socket cli : cliListTmp) { | |
| 288 try { | |
| 19 | 289 sendPngData(cli); |
| 290 addSock(cli); | |
| 45 | 291 } catch (IOException e) { |
| 19 | 292 // if socket closed |
| 293 cliListTmp.remove(cli); | |
| 294 } | |
| 295 } | |
| 45 | 296 // System.out.println("cliSize="+cliSize()); |
| 297 } catch (Exception e) { | |
| 19 | 298 } |
| 299 cliListTmp.clear(); | |
| 300 } | |
| 301 | |
| 15 | 302 boolean ready() throws IOException { |
| 303 BufferedReader br = new BufferedReader(new InputStreamReader(is)); | |
| 304 return br.ready(); | |
| 45 | 305 } |
| 10 | 306 |
| 45 | 307 int cliSize() { |
| 10 | 308 return cliList.size(); |
| 45 | 309 } |
| 310 | |
| 311 void printNumBytesRead() { | |
| 312 System.out.println("numBytesRead=" + numBytesRead); | |
| 313 } | |
| 314 | |
|
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315 |
| 45 | 316 |
| 317 void regiFramebufferUpdate() throws IOException { | |
| 60 | 318 is.mark(20); |
| 319 messageType = readU8(); // 0 | |
| 320 skipBytes(1); // 1 | |
| 321 rectangles = readU16(); // 2 | |
| 322 rectX = readU16(); // 4 | |
| 323 rectY = readU16(); // 6 | |
| 324 rectW = readU16(); // 8 | |
| 325 rectH = readU16(); // 10 | |
| 326 encoding = readU32(); // 12 | |
| 71 | 327 System.out.println("encoding = "+encoding); |
| 69 | 328 if (encoding == EncodingZRLE|| encoding==EncodingZRLEE||encoding==EncodingZlib) |
|
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329 zLen = readU32(); |
| 60 | 330 else |
| 331 zLen = 0; | |
| 332 is.reset(); | |
| 69 | 333 |
| 60 | 334 } |
| 335 | |
| 336 int checkAndMark() throws IOException { | |
| 337 int dataLen; | |
| 338 switch (encoding) { | |
| 339 case RfbProto.EncodingRaw: | |
| 340 dataLen = rectW * rectH * 4 + 16; | |
| 341 is.mark(dataLen); | |
| 342 break; | |
| 343 case RfbProto.EncodingCopyRect: | |
| 344 dataLen = 16 + 4; | |
| 345 is.mark(dataLen); | |
| 346 break; | |
| 347 case RfbProto.EncodingRRE: | |
| 348 case RfbProto.EncodingCoRRE: | |
| 349 case RfbProto.EncodingHextile: | |
| 350 case RfbProto.EncodingTight: | |
| 351 dataLen = zLen + 20; | |
| 352 is.mark(dataLen); | |
| 353 break; | |
| 354 case RfbProto.EncodingZlib: | |
| 355 case RfbProto.EncodingZRLE: | |
| 69 | 356 case RfbProto.EncodingZRLEE: |
| 60 | 357 dataLen = zLen + 20; |
| 358 is.mark(dataLen); | |
| 359 break; | |
| 360 case RfbProto.EncodingXCursor: | |
| 361 case RfbProto.EncodingRichCursor: | |
| 362 int pixArray = rectW * rectH * 4; | |
| 363 int u8Array = (int)Math.floor((rectW + 7)/8) * rectH; | |
| 364 dataLen = pixArray + u8Array; | |
| 365 printFramebufferUpdate(); | |
| 366 is.mark(dataLen); | |
| 367 break; | |
| 368 default: | |
| 369 dataLen = 1000000; | |
| 370 is.mark(dataLen); | |
| 371 } | |
|
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372 return dataLen; |
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373 } |
| 60 | 374 |
| 45 | 375 |
| 60 | 376 void sendDataToClient() throws Exception { |
|
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377 regiFramebufferUpdate(); |
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378 int dataLen = checkAndMark(); |
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379 readSendData(dataLen); |
| 25 | 380 } |
| 45 | 381 |
| 382 BufferedImage createBufferedImage(Image img) { | |
| 383 BufferedImage bimg = new BufferedImage(img.getWidth(null), | |
| 384 img.getHeight(null), BufferedImage.TYPE_INT_RGB); | |
| 19 | 385 |
| 386 Graphics g = bimg.getGraphics(); | |
| 387 g.drawImage(img, 0, 0, null); | |
| 388 g.dispose(); | |
| 389 return bimg; | |
| 390 } | |
| 391 | |
| 45 | 392 void createPngBytes(BufferedImage bimg) throws IOException { |
| 393 pngBytes = getImageBytes(bimg, "png"); | |
| 19 | 394 } |
| 45 | 395 |
| 396 byte[] getBytes(BufferedImage img) throws IOException { | |
| 19 | 397 byte[] b = getImageBytes(img, "png"); |
| 398 return b; | |
| 15 | 399 } |
| 45 | 400 |
| 401 byte[] getImageBytes(BufferedImage image, String imageFormat) | |
| 402 throws IOException { | |
| 19 | 403 ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| 404 BufferedOutputStream os = new BufferedOutputStream(bos); | |
| 405 image.flush(); | |
| 406 ImageIO.write(image, imageFormat, os); | |
| 407 os.flush(); | |
| 408 os.close(); | |
| 409 return bos.toByteArray(); | |
| 410 } | |
| 411 | |
| 45 | 412 void sendPngData(Socket sock) throws IOException { |
| 19 | 413 byte[] dataLength = castIntByte(pngBytes.length); |
| 414 sock.getOutputStream().write(dataLength); | |
| 415 sock.getOutputStream().write(pngBytes); | |
| 416 } | |
| 45 | 417 |
| 418 byte[] castIntByte(int len) { | |
| 19 | 419 byte[] b = new byte[4]; |
| 45 | 420 b[0] = (byte) ((len >>> 24) & 0xFF); |
| 421 b[1] = (byte) ((len >>> 16) & 0xFF); | |
| 422 b[2] = (byte) ((len >>> 8) & 0xFF); | |
| 423 b[3] = (byte) ((len >>> 0) & 0xFF); | |
| 19 | 424 return b; |
| 425 } | |
| 45 | 426 |
| 427 BufferedImage createBimg() throws IOException { | |
| 19 | 428 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes)); |
| 429 return bimg; | |
| 430 } | |
| 69 | 431 |
| 45 | 432 void printFramebufferUpdate() { |
| 433 | |
| 15 | 434 System.out.println("messageType=" + messageType); |
| 45 | 435 System.out.println("rectangles=" + rectangles); |
| 15 | 436 System.out.println("encoding=" + encoding); |
| 60 | 437 System.out.println("rectX = "+rectX+": rectY = "+rectY); |
| 438 System.out.println("rectW = "+rectW+": rectH = "+rectH); | |
| 45 | 439 switch (encoding) { |
| 19 | 440 case RfbProto.EncodingRaw: |
| 45 | 441 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 |
| 442 + 16); | |
| 19 | 443 break; |
| 444 default: | |
| 445 } | |
| 15 | 446 } |
| 60 | 447 |
| 448 void readSpeedCheck() throws IOException { | |
| 449 byte[] b = new byte[1]; | |
| 450 readFully(b); | |
| 451 } | |
| 452 | |
| 453 void startSpeedCheck() { | |
| 454 ByteBuffer b = ByteBuffer.allocate(10); | |
| 455 b.put((byte)SpeedCheckMillis); | |
| 456 b.flip(); | |
| 457 startCheckTime = System.currentTimeMillis(); | |
| 458 System.out.println("startChckTime = "+ startCheckTime); | |
| 459 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); | |
| 460 bufs.add(b); | |
| 461 multicastqueue.put(bufs); | |
| 462 } | |
| 463 | |
| 464 void endSpeedCheck() { | |
| 465 long accTime = System.currentTimeMillis(); | |
| 466 long time = accTime - startCheckTime; | |
| 467 System.out.println("checkMillis: " + time); | |
| 468 } | |
| 469 | |
| 470 | |
| 471 synchronized void changeStatusFlag() { | |
| 472 printStatusFlag = true; | |
| 473 } | |
| 474 | |
| 475 void printMills() { | |
| 476 if(printStatusFlag) { | |
| 477 | |
| 478 changeStatusFlag(); | |
| 479 } else { | |
| 480 changeStatusFlag(); | |
| 481 } | |
| 482 } | |
| 483 | |
| 484 void speedCheckMillis() { | |
| 485 Runnable stdin = new Runnable() { | |
| 486 public void run() { | |
| 487 int c; | |
| 488 try { | |
| 489 while( (c = System.in.read()) != -1 ) { | |
| 490 switch(c) { | |
| 491 case 's': | |
| 492 break; | |
| 493 default: | |
| 494 startSpeedCheck(); | |
| 495 break; | |
| 496 } | |
| 497 } | |
| 498 }catch(IOException e){ | |
| 499 System.out.println(e); | |
| 500 } | |
| 501 } | |
| 502 }; | |
| 503 | |
| 504 new Thread(stdin).start(); | |
| 505 } | |
| 506 | |
| 507 /** | |
| 508 * gzip byte arrays | |
| 509 * @param deflater | |
| 510 * @param inputs | |
| 511 * byte data[] | |
| 512 * @param inputIndex | |
| 513 * @param outputs | |
| 514 * byte data[] | |
| 515 * @return byte length in last byte array | |
| 516 * @throws IOException | |
| 517 */ | |
| 518 public int zip(Deflater deflater,LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs) throws IOException { | |
| 519 int len = 0; | |
| 520 ByteBuffer c1= ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 521 while(inputIndex < inputs.size() ) { | |
| 522 ByteBuffer b1 = inputs.get(inputIndex++); | |
| 523 deflater.setInput(b1.array(),b1.position(),b1.remaining()); | |
| 69 | 524 /** |
| 525 * If we finish() stream and reset() it, Deflater start new gzip stream, this makes continuous zlib reader unhappy. | |
| 526 * if we remove finish(), Deflater.deflate() never flushes its output. The original zlib deflate has flush flag. I'm pretty | |
| 527 * sure this a kind of bug of Java library. | |
| 528 */ | |
| 529 if (inputIndex==inputs.size()) | |
| 530 deflater.finish(); | |
| 531 int len1 = 0; | |
| 60 | 532 do { |
| 69 | 533 len1 = deflater.deflate(c1.array(),c1.position(),c1.remaining()); |
| 60 | 534 if (len1>0) { |
| 535 len += len1; | |
| 536 c1.position(c1.position()+len1); | |
| 537 if (c1.remaining()==0) { | |
| 538 c1.flip(); outputs.addLast(c1); | |
| 539 c1 = ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 540 } | |
| 541 } | |
| 69 | 542 } while (len1 >0 || !deflater.needsInput()); // &&!deflater.finished()); |
| 60 | 543 } |
| 544 if (c1.position()!=0) { | |
| 545 c1.flip(); outputs.addLast(c1); | |
| 546 } | |
| 547 deflater.reset(); | |
| 548 return len; | |
| 549 } | |
| 550 | |
| 551 /** | |
| 552 * gunzip byte arrays | |
| 553 * @param inflater | |
| 554 * @param inputs | |
| 555 * byte data[] | |
| 556 * @param outputs | |
| 557 * byte data[] | |
| 558 *@return number of total bytes | |
| 559 * @throws IOException | |
| 560 */ | |
| 69 | 561 public int unzip(Inflater inflater, LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs,int bufSize) |
| 60 | 562 throws DataFormatException { |
| 563 int len=0; | |
| 69 | 564 ByteBuffer buf = ByteBuffer.allocate(bufSize); |
| 60 | 565 while (inputIndex < inputs.size()) { |
| 566 ByteBuffer input = inputs.get(inputIndex++); | |
| 567 inflater.setInput(input.array(),input.position(),input.limit()); | |
| 69 | 568 // if (inputIndex==inputs.size()) if inflater/deflater has symmetry, we need this |
| 569 // inflater.end(); but this won't work | |
| 60 | 570 do { |
| 571 int len0 = inflater.inflate(buf.array(),buf.position(),buf.remaining()); | |
| 572 if (len0>0) { | |
| 573 buf.position(buf.position()+len0); | |
| 574 len += len0; | |
| 575 if (buf.remaining()==0) { | |
| 576 buf.flip(); | |
| 577 outputs.addLast(buf); | |
| 69 | 578 buf = ByteBuffer.allocate(bufSize); |
| 60 | 579 } |
| 580 } | |
| 581 } while (!inflater.needsInput()); | |
| 582 } | |
| 583 if (buf.position()!=0) { | |
| 584 buf.flip(); | |
| 585 outputs.addLast(buf); | |
| 586 } | |
| 587 return len; | |
| 588 } | |
| 589 | |
| 69 | 590 /** |
| 591 * send data to clients | |
| 592 * @param dataLen | |
| 593 * @throws IOException | |
| 594 * @throws DataFormatException | |
| 595 * | |
| 596 * Zlibed packet is compressed in context dependent way, that is, it have to send from the beginning. But this is | |
| 597 * impossible. So we have to compress it again for each clients. Separate deflater for each clients is necessary. | |
| 598 * | |
| 599 * Java's deflater does not support flush. This means to get the result, we have to finish the compression. Reseting | |
| 600 * start new compression, but it is not accepted well in zlib continuous reading. So we need new Encoding ZRLEE | |
| 601 * which reset decoder for each packet. ZRLEE can be invisible from user, but it have to be implemented in the clients. | |
| 602 * ZRLEE compression is not context dependent, so no recompression is necessary. | |
| 603 */ | |
| 60 | 604 void readSendData(int dataLen) throws IOException, DataFormatException { |
| 605 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); | |
| 606 ByteBuffer header = ByteBuffer.allocate(16); | |
| 607 readFully(header.array(),0,16); | |
| 608 header.limit(16); | |
| 609 if (header.get(0)==RfbProto.FramebufferUpdate) { | |
| 610 int encoding = header.getInt(12); | |
| 69 | 611 if (encoding==RfbProto.EncodingZRLE||encoding==RfbProto.EncodingZlib) { // ZRLEE is already recompressed |
| 60 | 612 ByteBuffer len = ByteBuffer.allocate(4); |
| 613 readFully(len.array(),0,4); len.limit(4); | |
| 614 ByteBuffer inputData = ByteBuffer.allocate(dataLen-20); | |
| 615 readFully(inputData.array(),0,inputData.capacity()); inputData.limit(dataLen-20); | |
| 616 LinkedList<ByteBuffer>inputs = new LinkedList<ByteBuffer>(); | |
| 617 inputs.add(inputData); | |
| 69 | 618 |
| 619 header.putInt(12, RfbProto.EncodingZRLEE); // means recompress every time | |
| 620 // using new Deflecter every time is incompatible with the protocol, clients have to be modified. | |
| 621 Deflater nDeflater = deflater; // new Deflater(); | |
| 622 LinkedList<ByteBuffer> out = new LinkedList<ByteBuffer>(); | |
| 623 unzip(inflater, inputs, 0 , out, INFLATE_BUFSIZE); | |
| 624 // dump32(inputs); | |
| 625 int len2 = zip(nDeflater, out, 0, bufs); | |
| 626 ByteBuffer blen = ByteBuffer.allocate(4); blen.putInt(len2); blen.flip(); | |
| 627 bufs.addFirst(blen); | |
| 628 | |
| 60 | 629 bufs.addFirst(header); |
| 630 multicastqueue.put(bufs); | |
| 631 is.reset(); | |
| 632 return ; | |
| 633 } | |
| 634 } | |
| 635 bufs.add(header); | |
| 636 if (dataLen>16) { | |
| 637 ByteBuffer b = ByteBuffer.allocate(dataLen-16); | |
| 638 readFully(b.array(),0,dataLen-16); b.limit(dataLen-16); | |
| 639 bufs.add(b); | |
| 640 } | |
| 641 multicastqueue.put(bufs); | |
| 642 is.reset(); | |
| 643 | |
| 644 // It may be compressed. We can inflate here to avoid repeating clients decompressing here, | |
| 645 // but it may generate too many large data. It is better to do it in each client. | |
| 646 // But we have do inflation for all input data, so we have to do it here. | |
| 647 } | |
| 45 | 648 |
| 54 | 649 void newClient(AcceptThread acceptThread, final Socket newCli, |
| 45 | 650 final OutputStream os, final InputStream is) throws IOException { |
| 651 // createBimgFlag = true; | |
| 652 // rfb.addSockTmp(newCli); | |
| 653 // addSock(newCli); | |
| 69 | 654 final int myId = clients; |
| 60 | 655 final Client <LinkedList<ByteBuffer>> c = multicastqueue.newClient(); |
| 69 | 656 final AtomicInteger writerRunning = new AtomicInteger(); |
| 657 writerRunning.set(1); | |
| 658 /** | |
| 659 * Timeout thread. If a client is suspended, it has top of queue indefinitely, which caused memory | |
| 660 * overflow. After the timeout, we poll the queue and discard it. Start long wait if writer is running. | |
| 661 */ | |
| 662 final Runnable timer = new Runnable() { | |
| 663 public void run() { | |
| 664 int count = 0; | |
| 665 for(;;) { | |
| 666 long timeout = 30000/8; | |
| 667 try { | |
| 668 synchronized(this) { | |
| 669 int state,flag; | |
| 670 writerRunning.set(0); | |
| 671 wait(timeout); | |
| 672 flag = 0; | |
| 673 while((state=writerRunning.get())==0) { | |
| 674 c.poll(); // discard, should be timeout | |
| 675 count++; | |
| 676 if (flag==0) { | |
| 677 System.out.println("Discarding "+myId + " count="+ count); flag = 1; | |
| 678 } | |
| 679 wait(10); // if this is too short, writer cannot take the poll, if this is too long, memory will overflow... | |
| 680 } | |
| 681 if (flag==1) System.out.println("Resuming "+myId + " count="+count); | |
| 682 if (state!=1) { | |
| 683 System.out.println("Client died "+myId); | |
| 684 break; | |
| 685 } | |
| 686 } | |
| 687 } catch (InterruptedException e) { | |
| 688 } | |
| 689 } | |
| 690 } | |
| 691 }; | |
| 692 new Thread(timer).start(); | |
| 693 /** | |
| 694 * discard all incoming from clients | |
| 695 */ | |
| 60 | 696 final Runnable reader = new Runnable() { |
| 45 | 697 public void run() { |
| 60 | 698 byte b[] = new byte[4096]; |
| 699 for(;;) { | |
| 700 try { | |
| 701 int c = is.read(b); | |
| 702 if (c<=0) throw new IOException(); | |
| 69 | 703 // System.out.println("client read "+c); |
| 60 | 704 } catch (IOException e) { |
| 705 try { | |
| 69 | 706 writerRunning.set(2); |
| 60 | 707 os.close(); |
| 708 is.close(); | |
| 709 } catch (IOException e1) { | |
| 710 } | |
| 711 return; | |
| 712 } | |
| 713 } | |
| 714 } | |
| 715 }; | |
| 69 | 716 /** |
| 717 * send packets to a client | |
| 718 */ | |
| 60 | 719 Runnable sender = new Runnable() { |
| 720 public void run() { | |
| 69 | 721 writerRunning.set(1); |
| 45 | 722 try { |
| 60 | 723 /** |
| 724 * initial connection of RFB protocol | |
| 725 */ | |
| 45 | 726 sendRfbVersion(os); |
| 727 readVersionMsg(is); | |
| 728 sendSecurityType(os); | |
| 729 readSecType(is); | |
| 730 sendSecResult(os); | |
| 731 readClientInit(is); | |
| 732 sendInitData(os); | |
| 69 | 733 new Thread(reader).start(); // discard incoming packet here after. |
| 45 | 734 for (;;) { |
| 60 | 735 LinkedList<ByteBuffer> bufs = c.poll(); |
| 736 int inputIndex = 0; | |
| 69 | 737 ByteBuffer header = bufs.get(inputIndex); |
| 60 | 738 if (header==null) continue; |
| 739 if (header.get(0)==RfbProto.FramebufferUpdate) { | |
| 69 | 740 // System.out.println("client "+ myId); |
| 60 | 741 } |
| 69 | 742 writeToClient(os, bufs, inputIndex); |
| 743 writerRunning.set(1); // yes my client is awaking. | |
| 45 | 744 } |
| 745 } catch (IOException e) { | |
| 60 | 746 try { |
| 69 | 747 writerRunning.set(2); |
| 60 | 748 os.close(); |
| 749 } catch (IOException e1) { | |
| 750 } | |
| 751 /* if socket closed cliList.remove(newCli); */ | |
| 45 | 752 } |
| 753 } | |
| 69 | 754 |
| 755 public void writeToClient(final OutputStream os, | |
| 756 LinkedList<ByteBuffer> bufs, int inputIndex) | |
| 757 throws IOException { | |
| 758 while(inputIndex < bufs.size()) { | |
| 759 ByteBuffer b = bufs.get(inputIndex++); | |
| 760 os.write(b.array(), b.position(), b.limit()); | |
| 761 } | |
| 762 os.flush(); | |
| 763 } | |
| 45 | 764 }; |
| 60 | 765 clients++; |
| 45 | 766 new Thread(sender).start(); |
| 767 | |
| 768 } | |
| 60 | 769 |
| 69 | 770 |
| 771 public void dump32(LinkedList<ByteBuffer>bufs) { | |
| 772 int len =0; | |
| 773 for(ByteBuffer b: bufs) len += b.remaining(); | |
| 774 ByteBuffer top = bufs.getFirst(); | |
| 775 ByteBuffer end = bufs.getLast(); | |
| 776 System.err.println("length: "+len); | |
| 777 System.err.print("head 0: "); | |
| 778 for(int i = 0; i<16 && i < top.remaining(); i++) { | |
| 779 System.err.print(" "+ top.get(i)); | |
| 780 } | |
| 781 System.err.print("tail 0: "); | |
| 782 for(int i = 0; i<16 && i < end.remaining(); i++) { | |
| 783 System.err.print(" "+end.get(i)); | |
| 784 } | |
| 785 System.err.println(); | |
| 786 } | |
| 787 | |
| 788 private Iterable<Byte> byteBufferIterator(final LinkedList<ByteBuffer> in) { | |
| 789 return new Iterable<Byte>() { | |
| 790 public Iterator<Byte> iterator() { | |
| 791 return new Iterator<Byte>() { | |
| 792 int bytes = 0; | |
| 793 int buffers = 0; | |
| 794 public boolean hasNext() { | |
| 795 for(;;) { | |
| 796 if (buffers>=in.size()) return false; | |
| 797 ByteBuffer b = in.get(buffers); | |
| 798 if (! (bytes<b.remaining())) { | |
| 799 buffers ++; bytes=0; | |
| 800 } else return true; | |
| 801 } | |
| 802 } | |
| 803 public Byte next() { | |
| 804 ByteBuffer bf =in.get(buffers); | |
| 805 byte b = bf.get(bytes++); | |
| 806 if (bf.remaining()<=bytes) { | |
| 807 buffers++; | |
| 808 bytes = 0; | |
| 809 } | |
| 810 // System.out.print(b); | |
| 811 return b; | |
| 812 } | |
| 813 public void remove() { | |
| 814 } | |
| 815 }; | |
| 816 } | |
| 817 }; | |
| 818 } | |
| 819 | |
| 45 | 820 } |
| 60 | 821 |
| 822 |