Mercurial > hg > Members > nobuyasu > tightVNCClient
annotate src/myVncClient/MyRfbProto.java @ 99:084adee7699b
befor change
| author | Yu Taninari <you@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 24 Oct 2011 23:06:02 +0900 |
| parents | 1d1bb77d871b |
| children | 2f2f8da71d60 |
| 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; |
| 72 | 63 //override |
| 64 InterfaceForViewer viewer; | |
| 34 | 65 |
| 25 | 66 ExecutorService executor; |
| 45 | 67 |
| 18 | 68 byte[] pngBytes; |
| 45 | 69 |
| 60 | 70 // private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MostRecentMultiCast<LinkedList<ByteBuffer>>(10); |
| 71 private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MulticastQueue<LinkedList<ByteBuffer>>(); | |
| 72 private int clients = 0; | |
| 73 private Inflater inflater = new Inflater(); | |
| 69 | 74 private Deflater deflater = new Deflater(); |
| 45 | 75 |
| 69 | 76 public |
| 77 MyRfbProto() throws IOException { | |
| 78 } | |
| 79 | |
| 45 | 80 MyRfbProto(String h, int p, VncViewer v) throws IOException { |
| 7 | 81 super(h, p, v); |
| 45 | 82 cliList = new LinkedList<Socket>(); |
| 83 cliListTmp = new LinkedList<Socket>(); | |
| 19 | 84 createBimgFlag = false; |
| 45 | 85 // sendThreads = new LinkedList<Thread>(); |
| 86 // executor = Executors.newCachedThreadPool(); | |
| 87 // executor = Executors.newSingleThreadExecutor(); | |
| 10 | 88 } |
| 72 | 89 |
| 15 | 90 MyRfbProto(String h, int p) throws IOException { |
| 91 super(h, p); | |
| 45 | 92 cliList = new LinkedList<Socket>(); |
| 93 cliListTmp = new LinkedList<Socket>(); | |
| 19 | 94 createBimgFlag = false; |
| 45 | 95 // sendThreads = new LinkedList<Thread>(); |
| 96 // executor = Executors.newCachedThreadPool(); | |
| 97 // executor = Executors.newSingleThreadExecutor(); | |
| 15 | 98 } |
| 72 | 99 |
| 100 | |
| 101 void readVersionMsg() throws Exception { | |
| 102 | |
| 103 byte[] b = new byte[12]; | |
| 104 | |
| 105 readFully(b); | |
| 106 | |
| 107 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 108 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 109 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 110 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 111 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 112 throw new Exception("Host " + host + " port " + port | |
| 113 + " is not an RFB server"); | |
| 114 } | |
| 115 | |
| 116 serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 117 serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 118 | |
| 119 if (serverMajor < 3) { | |
| 120 throw new Exception( | |
| 121 "RFB server does not support protocol version 3"); | |
| 122 } | |
| 123 | |
| 124 if (serverMinor == 998) { | |
| 125 | |
| 126 } | |
| 127 | |
| 128 } | |
| 73 | 129 byte[] readEchoPort() throws Exception { |
| 130 byte[] b = new byte[4]; | |
| 131 readFully(b); | |
| 132 | |
| 133 return b; | |
| 134 } | |
| 135 | |
| 136 | |
| 72 | 137 |
| 69 | 138 void changeParent(String h, int p) throws IOException { |
| 139 host = h; | |
| 140 port = p; | |
| 84 | 141 |
| 69 | 142 sock = new Socket(host, port); |
| 143 is = new DataInputStream(new BufferedInputStream(sock.getInputStream(), | |
| 144 16384)); | |
| 145 os = sock.getOutputStream(); | |
| 146 | |
| 147 timing = false; | |
| 148 timeWaitedIn100us = 5; | |
| 149 timedKbits = 0; | |
| 150 } | |
| 151 | |
| 28 | 152 // over write |
| 27 | 153 void writeVersionMsg() throws IOException { |
| 154 clientMajor = 3; | |
| 99 | 155 if (serverMinor >= 9) { |
| 156 clientMinor = 9; | |
| 157 os.write(versionMsg_3_998.getBytes()); | |
| 27 | 158 } else if (serverMajor > 3 || serverMinor >= 8) { |
| 159 clientMinor = 8; | |
| 160 os.write(versionMsg_3_8.getBytes()); | |
| 161 } else if (serverMinor >= 7) { | |
| 162 clientMinor = 7; | |
| 163 os.write(versionMsg_3_7.getBytes()); | |
| 164 } else { | |
| 165 clientMinor = 3; | |
| 166 os.write(versionMsg_3_3.getBytes()); | |
| 167 } | |
| 168 protocolTightVNC = false; | |
| 169 initCapabilities(); | |
| 170 } | |
| 171 | |
| 45 | 172 void initServSock(int port) throws IOException { |
| 10 | 173 servSock = new ServerSocket(port); |
| 18 | 174 acceptPort = port; |
| 175 } | |
| 45 | 176 |
| 69 | 177 // 5550を開けるが、開いてないなら+1のポートを開ける。 |
| 60 | 178 void selectPort(int p) { |
| 179 int port = p; | |
| 45 | 180 while (true) { |
| 181 try { | |
| 60 | 182 initServSock(port); |
| 18 | 183 break; |
| 45 | 184 } catch (BindException e) { |
| 60 | 185 port++; |
| 18 | 186 continue; |
| 45 | 187 } catch (IOException e) { |
| 19 | 188 |
| 18 | 189 } |
| 190 } | |
| 60 | 191 System.out.println("accept port = " + port); |
| 18 | 192 } |
| 45 | 193 |
| 194 int getAcceptPort() { | |
| 18 | 195 return acceptPort; |
| 7 | 196 } |
| 45 | 197 |
| 10 | 198 void setSoTimeout(int num) throws IOException { |
| 199 servSock.setSoTimeout(num); | |
| 200 } | |
| 45 | 201 |
| 10 | 202 Socket accept() throws IOException { |
| 203 return servSock.accept(); | |
| 204 } | |
| 205 | |
| 45 | 206 void addSock(Socket sock) { |
| 10 | 207 cliList.add(sock); |
| 208 } | |
| 45 | 209 |
| 210 void addSockTmp(Socket sock) { | |
| 211 System.out.println("connected " + sock.getInetAddress()); | |
| 19 | 212 cliListTmp.add(sock); |
| 213 } | |
| 45 | 214 |
| 8 | 215 boolean markSupported() { |
| 7 | 216 return is.markSupported(); |
| 217 } | |
| 45 | 218 |
| 8 | 219 void readServerInit() throws IOException { |
| 45 | 220 |
| 60 | 221 is.mark(255); |
| 8 | 222 skipBytes(20); |
| 223 int nlen = readU32(); | |
| 45 | 224 int blen = 20 + 4 + nlen; |
| 10 | 225 initData = new byte[blen]; |
| 60 | 226 is.reset(); |
| 10 | 227 |
| 60 | 228 is.mark(blen); |
| 8 | 229 readFully(initData); |
| 60 | 230 is.reset(); |
| 45 | 231 |
| 7 | 232 framebufferWidth = readU16(); |
| 233 framebufferHeight = readU16(); | |
| 234 bitsPerPixel = readU8(); | |
| 235 depth = readU8(); | |
| 236 bigEndian = (readU8() != 0); | |
| 237 trueColour = (readU8() != 0); | |
| 238 redMax = readU16(); | |
| 239 greenMax = readU16(); | |
| 240 blueMax = readU16(); | |
| 241 redShift = readU8(); | |
| 242 greenShift = readU8(); | |
| 243 blueShift = readU8(); | |
| 8 | 244 byte[] pad = new byte[3]; |
| 245 readFully(pad); | |
| 246 int nameLength = readU32(); | |
| 247 byte[] name = new byte[nameLength]; | |
| 248 readFully(name); | |
| 249 desktopName = new String(name); | |
| 7 | 250 |
| 8 | 251 // Read interaction capabilities (TightVNC protocol extensions) |
| 252 if (protocolTightVNC) { | |
| 253 int nServerMessageTypes = readU16(); | |
| 254 int nClientMessageTypes = readU16(); | |
| 255 int nEncodingTypes = readU16(); | |
| 256 readU16(); | |
| 257 readCapabilityList(serverMsgCaps, nServerMessageTypes); | |
| 258 readCapabilityList(clientMsgCaps, nClientMessageTypes); | |
| 259 readCapabilityList(encodingCaps, nEncodingTypes); | |
| 260 } | |
| 261 | |
| 262 inNormalProtocol = true; | |
| 7 | 263 } |
| 264 | |
| 45 | 265 void sendRfbVersion(OutputStream os) throws IOException { |
| 78 | 266 // os.write(versionMsg_3_998.getBytes()); |
| 267 os.write(versionMsg_3_8.getBytes()); | |
| 27 | 268 } |
| 45 | 269 |
| 28 | 270 void readVersionMsg(InputStream is) throws IOException { |
| 271 | |
| 272 byte[] b = new byte[12]; | |
| 273 | |
| 274 is.read(b); | |
| 275 | |
| 276 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 277 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 278 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 279 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 280 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 281 throw new IOException("Host " + host + " port " + port | |
| 282 + " is not an RFB server"); | |
| 283 } | |
| 284 | |
| 285 serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 286 serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 287 | |
| 288 if (serverMajor < 3) { | |
| 289 throw new IOException( | |
| 290 "RFB server does not support protocol version 3"); | |
| 45 | 291 } |
| 292 | |
| 73 | 293 |
| 45 | 294 } |
| 295 | |
| 73 | 296 |
| 27 | 297 void sendSecurityType(OutputStream os) throws IOException { |
| 298 // number-of-security-types | |
| 299 os.write(1); | |
| 45 | 300 // security-types |
| 27 | 301 // 1:None |
| 302 os.write(1); | |
| 303 } | |
| 45 | 304 |
| 28 | 305 void readSecType(InputStream is) throws IOException { |
| 306 byte[] b = new byte[1]; | |
| 307 is.read(b); | |
| 308 | |
| 309 } | |
| 45 | 310 |
| 28 | 311 void sendSecResult(OutputStream os) throws IOException { |
| 312 byte[] b = castIntByte(0); | |
| 313 os.write(b); | |
| 314 } | |
| 45 | 315 |
| 27 | 316 void readClientInit(InputStream in) throws IOException { |
| 317 byte[] b = new byte[0]; | |
| 318 in.read(b); | |
| 319 } | |
| 45 | 320 |
| 321 void sendInitData(OutputStream os) throws IOException { | |
| 322 os.write(initData); | |
| 8 | 323 } |
| 10 | 324 |
| 45 | 325 |
| 326 void sendPngImage() { | |
| 327 try { | |
| 328 for (Socket cli : cliListTmp) { | |
| 329 try { | |
| 19 | 330 sendPngData(cli); |
| 331 addSock(cli); | |
| 45 | 332 } catch (IOException e) { |
| 19 | 333 // if socket closed |
| 334 cliListTmp.remove(cli); | |
| 335 } | |
| 336 } | |
| 45 | 337 // System.out.println("cliSize="+cliSize()); |
| 338 } catch (Exception e) { | |
| 19 | 339 } |
| 340 cliListTmp.clear(); | |
| 341 } | |
| 342 | |
| 15 | 343 boolean ready() throws IOException { |
| 344 BufferedReader br = new BufferedReader(new InputStreamReader(is)); | |
| 345 return br.ready(); | |
| 45 | 346 } |
| 10 | 347 |
| 45 | 348 int cliSize() { |
| 10 | 349 return cliList.size(); |
| 45 | 350 } |
| 351 | |
| 352 void printNumBytesRead() { | |
| 353 System.out.println("numBytesRead=" + numBytesRead); | |
| 354 } | |
| 355 | |
|
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356 |
| 45 | 357 |
| 358 void regiFramebufferUpdate() throws IOException { | |
| 60 | 359 is.mark(20); |
| 360 messageType = readU8(); // 0 | |
| 361 skipBytes(1); // 1 | |
| 362 rectangles = readU16(); // 2 | |
| 363 rectX = readU16(); // 4 | |
| 364 rectY = readU16(); // 6 | |
| 365 rectW = readU16(); // 8 | |
| 366 rectH = readU16(); // 10 | |
| 367 encoding = readU32(); // 12 | |
| 78 | 368 // System.out.println("encoding = "+encoding); |
| 69 | 369 if (encoding == EncodingZRLE|| encoding==EncodingZRLEE||encoding==EncodingZlib) |
|
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370 zLen = readU32(); |
| 60 | 371 else |
| 372 zLen = 0; | |
| 373 is.reset(); | |
| 69 | 374 |
| 60 | 375 } |
| 376 | |
| 377 int checkAndMark() throws IOException { | |
| 378 int dataLen; | |
| 379 switch (encoding) { | |
| 380 case RfbProto.EncodingRaw: | |
| 381 dataLen = rectW * rectH * 4 + 16; | |
| 382 is.mark(dataLen); | |
| 383 break; | |
| 384 case RfbProto.EncodingCopyRect: | |
| 385 dataLen = 16 + 4; | |
| 386 is.mark(dataLen); | |
| 387 break; | |
| 388 case RfbProto.EncodingRRE: | |
| 389 case RfbProto.EncodingCoRRE: | |
| 390 case RfbProto.EncodingHextile: | |
| 391 case RfbProto.EncodingTight: | |
| 392 dataLen = zLen + 20; | |
| 393 is.mark(dataLen); | |
| 394 break; | |
| 395 case RfbProto.EncodingZlib: | |
| 396 case RfbProto.EncodingZRLE: | |
| 69 | 397 case RfbProto.EncodingZRLEE: |
| 60 | 398 dataLen = zLen + 20; |
| 399 is.mark(dataLen); | |
| 400 break; | |
| 401 case RfbProto.EncodingXCursor: | |
| 402 case RfbProto.EncodingRichCursor: | |
| 403 int pixArray = rectW * rectH * 4; | |
| 404 int u8Array = (int)Math.floor((rectW + 7)/8) * rectH; | |
| 405 dataLen = pixArray + u8Array; | |
| 406 printFramebufferUpdate(); | |
| 407 is.mark(dataLen); | |
| 408 break; | |
| 409 default: | |
| 410 dataLen = 1000000; | |
| 411 is.mark(dataLen); | |
| 412 } | |
|
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413 return dataLen; |
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414 } |
| 60 | 415 |
| 45 | 416 |
| 60 | 417 void sendDataToClient() throws Exception { |
|
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418 regiFramebufferUpdate(); |
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419 int dataLen = checkAndMark(); |
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420 readSendData(dataLen); |
| 25 | 421 } |
| 45 | 422 |
| 423 BufferedImage createBufferedImage(Image img) { | |
| 424 BufferedImage bimg = new BufferedImage(img.getWidth(null), | |
| 425 img.getHeight(null), BufferedImage.TYPE_INT_RGB); | |
| 19 | 426 |
| 427 Graphics g = bimg.getGraphics(); | |
| 428 g.drawImage(img, 0, 0, null); | |
| 429 g.dispose(); | |
| 430 return bimg; | |
| 431 } | |
| 432 | |
| 45 | 433 void createPngBytes(BufferedImage bimg) throws IOException { |
| 434 pngBytes = getImageBytes(bimg, "png"); | |
| 19 | 435 } |
| 45 | 436 |
| 437 byte[] getBytes(BufferedImage img) throws IOException { | |
| 19 | 438 byte[] b = getImageBytes(img, "png"); |
| 439 return b; | |
| 15 | 440 } |
| 45 | 441 |
| 442 byte[] getImageBytes(BufferedImage image, String imageFormat) | |
| 443 throws IOException { | |
| 19 | 444 ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| 445 BufferedOutputStream os = new BufferedOutputStream(bos); | |
| 446 image.flush(); | |
| 447 ImageIO.write(image, imageFormat, os); | |
| 448 os.flush(); | |
| 449 os.close(); | |
| 450 return bos.toByteArray(); | |
| 451 } | |
| 452 | |
| 45 | 453 void sendPngData(Socket sock) throws IOException { |
| 19 | 454 byte[] dataLength = castIntByte(pngBytes.length); |
| 455 sock.getOutputStream().write(dataLength); | |
| 456 sock.getOutputStream().write(pngBytes); | |
| 457 } | |
| 45 | 458 |
| 459 byte[] castIntByte(int len) { | |
| 19 | 460 byte[] b = new byte[4]; |
| 45 | 461 b[0] = (byte) ((len >>> 24) & 0xFF); |
| 462 b[1] = (byte) ((len >>> 16) & 0xFF); | |
| 463 b[2] = (byte) ((len >>> 8) & 0xFF); | |
| 464 b[3] = (byte) ((len >>> 0) & 0xFF); | |
| 19 | 465 return b; |
| 466 } | |
| 45 | 467 |
| 468 BufferedImage createBimg() throws IOException { | |
| 19 | 469 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes)); |
| 470 return bimg; | |
| 471 } | |
| 69 | 472 |
| 45 | 473 void printFramebufferUpdate() { |
| 474 | |
| 15 | 475 System.out.println("messageType=" + messageType); |
| 45 | 476 System.out.println("rectangles=" + rectangles); |
| 15 | 477 System.out.println("encoding=" + encoding); |
| 60 | 478 System.out.println("rectX = "+rectX+": rectY = "+rectY); |
| 479 System.out.println("rectW = "+rectW+": rectH = "+rectH); | |
| 45 | 480 switch (encoding) { |
| 19 | 481 case RfbProto.EncodingRaw: |
| 45 | 482 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 |
| 483 + 16); | |
| 19 | 484 break; |
| 485 default: | |
| 486 } | |
| 15 | 487 } |
| 60 | 488 |
| 489 void readSpeedCheck() throws IOException { | |
| 490 byte[] b = new byte[1]; | |
| 491 readFully(b); | |
| 492 } | |
| 493 | |
| 494 void startSpeedCheck() { | |
| 495 ByteBuffer b = ByteBuffer.allocate(10); | |
| 496 b.put((byte)SpeedCheckMillis); | |
| 497 b.flip(); | |
| 498 startCheckTime = System.currentTimeMillis(); | |
| 499 System.out.println("startChckTime = "+ startCheckTime); | |
| 500 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); | |
| 501 bufs.add(b); | |
| 502 multicastqueue.put(bufs); | |
| 503 } | |
| 504 | |
| 505 void endSpeedCheck() { | |
| 506 long accTime = System.currentTimeMillis(); | |
| 507 long time = accTime - startCheckTime; | |
| 508 System.out.println("checkMillis: " + time); | |
| 509 } | |
| 510 | |
| 511 | |
| 512 synchronized void changeStatusFlag() { | |
| 513 printStatusFlag = true; | |
| 514 } | |
| 515 | |
| 516 void printMills() { | |
| 517 if(printStatusFlag) { | |
| 518 | |
| 519 changeStatusFlag(); | |
| 520 } else { | |
| 521 changeStatusFlag(); | |
| 522 } | |
| 523 } | |
| 524 | |
| 525 void speedCheckMillis() { | |
| 526 Runnable stdin = new Runnable() { | |
| 527 public void run() { | |
| 528 int c; | |
| 529 try { | |
| 530 while( (c = System.in.read()) != -1 ) { | |
| 531 switch(c) { | |
| 532 case 's': | |
| 533 break; | |
| 534 default: | |
| 535 startSpeedCheck(); | |
| 536 break; | |
| 537 } | |
| 538 } | |
| 539 }catch(IOException e){ | |
| 540 System.out.println(e); | |
| 541 } | |
| 542 } | |
| 543 }; | |
| 544 | |
| 545 new Thread(stdin).start(); | |
| 546 } | |
| 547 | |
| 548 /** | |
| 549 * gzip byte arrays | |
| 550 * @param deflater | |
| 551 * @param inputs | |
| 552 * byte data[] | |
| 553 * @param inputIndex | |
| 554 * @param outputs | |
| 555 * byte data[] | |
| 556 * @return byte length in last byte array | |
| 557 * @throws IOException | |
| 558 */ | |
| 559 public int zip(Deflater deflater,LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs) throws IOException { | |
| 560 int len = 0; | |
| 561 ByteBuffer c1= ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 562 while(inputIndex < inputs.size() ) { | |
| 563 ByteBuffer b1 = inputs.get(inputIndex++); | |
| 564 deflater.setInput(b1.array(),b1.position(),b1.remaining()); | |
| 69 | 565 /** |
| 566 * If we finish() stream and reset() it, Deflater start new gzip stream, this makes continuous zlib reader unhappy. | |
| 567 * if we remove finish(), Deflater.deflate() never flushes its output. The original zlib deflate has flush flag. I'm pretty | |
| 568 * sure this a kind of bug of Java library. | |
| 569 */ | |
| 570 if (inputIndex==inputs.size()) | |
| 571 deflater.finish(); | |
| 572 int len1 = 0; | |
| 60 | 573 do { |
| 69 | 574 len1 = deflater.deflate(c1.array(),c1.position(),c1.remaining()); |
| 60 | 575 if (len1>0) { |
| 576 len += len1; | |
| 577 c1.position(c1.position()+len1); | |
| 578 if (c1.remaining()==0) { | |
| 579 c1.flip(); outputs.addLast(c1); | |
| 580 c1 = ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 581 } | |
| 582 } | |
| 69 | 583 } while (len1 >0 || !deflater.needsInput()); // &&!deflater.finished()); |
| 60 | 584 } |
| 585 if (c1.position()!=0) { | |
| 586 c1.flip(); outputs.addLast(c1); | |
| 587 } | |
| 588 deflater.reset(); | |
| 589 return len; | |
| 590 } | |
| 591 | |
| 592 /** | |
| 593 * gunzip byte arrays | |
| 594 * @param inflater | |
| 595 * @param inputs | |
| 596 * byte data[] | |
| 597 * @param outputs | |
| 598 * byte data[] | |
| 599 *@return number of total bytes | |
| 600 * @throws IOException | |
| 601 */ | |
| 69 | 602 public int unzip(Inflater inflater, LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs,int bufSize) |
| 60 | 603 throws DataFormatException { |
| 604 int len=0; | |
| 69 | 605 ByteBuffer buf = ByteBuffer.allocate(bufSize); |
| 60 | 606 while (inputIndex < inputs.size()) { |
| 607 ByteBuffer input = inputs.get(inputIndex++); | |
| 608 inflater.setInput(input.array(),input.position(),input.limit()); | |
| 69 | 609 // if (inputIndex==inputs.size()) if inflater/deflater has symmetry, we need this |
| 610 // inflater.end(); but this won't work | |
| 60 | 611 do { |
| 612 int len0 = inflater.inflate(buf.array(),buf.position(),buf.remaining()); | |
| 613 if (len0>0) { | |
| 614 buf.position(buf.position()+len0); | |
| 615 len += len0; | |
| 616 if (buf.remaining()==0) { | |
| 617 buf.flip(); | |
| 618 outputs.addLast(buf); | |
| 69 | 619 buf = ByteBuffer.allocate(bufSize); |
| 60 | 620 } |
| 621 } | |
| 622 } while (!inflater.needsInput()); | |
| 623 } | |
| 624 if (buf.position()!=0) { | |
| 625 buf.flip(); | |
| 626 outputs.addLast(buf); | |
| 627 } | |
| 628 return len; | |
| 629 } | |
| 630 | |
| 69 | 631 /** |
| 632 * send data to clients | |
| 633 * @param dataLen | |
| 634 * @throws IOException | |
| 635 * @throws DataFormatException | |
| 636 * | |
| 637 * Zlibed packet is compressed in context dependent way, that is, it have to send from the beginning. But this is | |
| 638 * impossible. So we have to compress it again for each clients. Separate deflater for each clients is necessary. | |
| 639 * | |
| 640 * Java's deflater does not support flush. This means to get the result, we have to finish the compression. Reseting | |
| 641 * start new compression, but it is not accepted well in zlib continuous reading. So we need new Encoding ZRLEE | |
| 642 * which reset decoder for each packet. ZRLEE can be invisible from user, but it have to be implemented in the clients. | |
| 643 * ZRLEE compression is not context dependent, so no recompression is necessary. | |
| 644 */ | |
| 60 | 645 void readSendData(int dataLen) throws IOException, DataFormatException { |
| 646 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); | |
| 647 ByteBuffer header = ByteBuffer.allocate(16); | |
| 648 readFully(header.array(),0,16); | |
| 649 header.limit(16); | |
| 650 if (header.get(0)==RfbProto.FramebufferUpdate) { | |
| 651 int encoding = header.getInt(12); | |
| 69 | 652 if (encoding==RfbProto.EncodingZRLE||encoding==RfbProto.EncodingZlib) { // ZRLEE is already recompressed |
| 60 | 653 ByteBuffer len = ByteBuffer.allocate(4); |
| 654 readFully(len.array(),0,4); len.limit(4); | |
| 655 ByteBuffer inputData = ByteBuffer.allocate(dataLen-20); | |
| 656 readFully(inputData.array(),0,inputData.capacity()); inputData.limit(dataLen-20); | |
| 657 LinkedList<ByteBuffer>inputs = new LinkedList<ByteBuffer>(); | |
| 658 inputs.add(inputData); | |
| 69 | 659 |
| 660 header.putInt(12, RfbProto.EncodingZRLEE); // means recompress every time | |
| 661 // using new Deflecter every time is incompatible with the protocol, clients have to be modified. | |
| 662 Deflater nDeflater = deflater; // new Deflater(); | |
| 663 LinkedList<ByteBuffer> out = new LinkedList<ByteBuffer>(); | |
| 664 unzip(inflater, inputs, 0 , out, INFLATE_BUFSIZE); | |
| 665 // dump32(inputs); | |
| 666 int len2 = zip(nDeflater, out, 0, bufs); | |
| 667 ByteBuffer blen = ByteBuffer.allocate(4); blen.putInt(len2); blen.flip(); | |
| 668 bufs.addFirst(blen); | |
| 669 | |
| 60 | 670 bufs.addFirst(header); |
| 671 multicastqueue.put(bufs); | |
| 672 is.reset(); | |
| 673 return ; | |
| 674 } | |
| 675 } | |
| 676 bufs.add(header); | |
| 677 if (dataLen>16) { | |
| 678 ByteBuffer b = ByteBuffer.allocate(dataLen-16); | |
| 679 readFully(b.array(),0,dataLen-16); b.limit(dataLen-16); | |
| 680 bufs.add(b); | |
| 681 } | |
| 682 multicastqueue.put(bufs); | |
| 683 is.reset(); | |
| 684 | |
| 685 // It may be compressed. We can inflate here to avoid repeating clients decompressing here, | |
| 686 // but it may generate too many large data. It is better to do it in each client. | |
| 687 // But we have do inflation for all input data, so we have to do it here. | |
| 688 } | |
| 45 | 689 |
| 54 | 690 void newClient(AcceptThread acceptThread, final Socket newCli, |
| 45 | 691 final OutputStream os, final InputStream is) throws IOException { |
| 692 // createBimgFlag = true; | |
| 693 // rfb.addSockTmp(newCli); | |
| 694 // addSock(newCli); | |
| 69 | 695 final int myId = clients; |
| 60 | 696 final Client <LinkedList<ByteBuffer>> c = multicastqueue.newClient(); |
| 69 | 697 final AtomicInteger writerRunning = new AtomicInteger(); |
| 698 writerRunning.set(1); | |
| 699 /** | |
| 700 * Timeout thread. If a client is suspended, it has top of queue indefinitely, which caused memory | |
| 701 * overflow. After the timeout, we poll the queue and discard it. Start long wait if writer is running. | |
| 702 */ | |
| 703 final Runnable timer = new Runnable() { | |
| 704 public void run() { | |
| 705 int count = 0; | |
| 706 for(;;) { | |
| 707 long timeout = 30000/8; | |
| 708 try { | |
| 709 synchronized(this) { | |
| 710 int state,flag; | |
| 711 writerRunning.set(0); | |
| 712 wait(timeout); | |
| 713 flag = 0; | |
| 714 while((state=writerRunning.get())==0) { | |
| 715 c.poll(); // discard, should be timeout | |
| 716 count++; | |
| 717 if (flag==0) { | |
| 718 System.out.println("Discarding "+myId + " count="+ count); flag = 1; | |
| 719 } | |
| 720 wait(10); // if this is too short, writer cannot take the poll, if this is too long, memory will overflow... | |
| 721 } | |
| 722 if (flag==1) System.out.println("Resuming "+myId + " count="+count); | |
| 723 if (state!=1) { | |
| 724 System.out.println("Client died "+myId); | |
| 725 break; | |
| 726 } | |
| 727 } | |
| 728 } catch (InterruptedException e) { | |
| 729 } | |
| 730 } | |
| 731 } | |
| 732 }; | |
| 733 new Thread(timer).start(); | |
| 734 /** | |
| 735 * discard all incoming from clients | |
| 736 */ | |
| 60 | 737 final Runnable reader = new Runnable() { |
| 45 | 738 public void run() { |
| 60 | 739 byte b[] = new byte[4096]; |
| 740 for(;;) { | |
| 741 try { | |
| 742 int c = is.read(b); | |
| 743 if (c<=0) throw new IOException(); | |
| 69 | 744 // System.out.println("client read "+c); |
| 60 | 745 } catch (IOException e) { |
| 746 try { | |
| 69 | 747 writerRunning.set(2); |
| 60 | 748 os.close(); |
| 749 is.close(); | |
| 750 } catch (IOException e1) { | |
| 751 } | |
| 752 return; | |
| 753 } | |
| 754 } | |
| 755 } | |
| 756 }; | |
| 69 | 757 /** |
| 758 * send packets to a client | |
| 759 */ | |
| 60 | 760 Runnable sender = new Runnable() { |
| 761 public void run() { | |
| 69 | 762 writerRunning.set(1); |
| 45 | 763 try { |
| 60 | 764 /** |
| 765 * initial connection of RFB protocol | |
| 766 */ | |
| 45 | 767 sendRfbVersion(os); |
| 768 readVersionMsg(is); | |
| 769 sendSecurityType(os); | |
| 770 readSecType(is); | |
| 771 sendSecResult(os); | |
| 772 readClientInit(is); | |
| 773 sendInitData(os); | |
| 69 | 774 new Thread(reader).start(); // discard incoming packet here after. |
| 45 | 775 for (;;) { |
| 60 | 776 LinkedList<ByteBuffer> bufs = c.poll(); |
| 777 int inputIndex = 0; | |
| 69 | 778 ByteBuffer header = bufs.get(inputIndex); |
| 60 | 779 if (header==null) continue; |
| 780 if (header.get(0)==RfbProto.FramebufferUpdate) { | |
| 69 | 781 // System.out.println("client "+ myId); |
| 60 | 782 } |
| 69 | 783 writeToClient(os, bufs, inputIndex); |
| 784 writerRunning.set(1); // yes my client is awaking. | |
| 45 | 785 } |
| 786 } catch (IOException e) { | |
| 60 | 787 try { |
| 69 | 788 writerRunning.set(2); |
| 60 | 789 os.close(); |
| 790 } catch (IOException e1) { | |
| 81 | 791 /* if socket closed cliList.remove(newCli); */ |
| 60 | 792 } |
| 45 | 793 } |
| 794 } | |
| 69 | 795 |
| 796 public void writeToClient(final OutputStream os, | |
| 797 LinkedList<ByteBuffer> bufs, int inputIndex) | |
| 798 throws IOException { | |
| 799 while(inputIndex < bufs.size()) { | |
| 800 ByteBuffer b = bufs.get(inputIndex++); | |
| 801 os.write(b.array(), b.position(), b.limit()); | |
| 802 } | |
| 803 os.flush(); | |
| 804 } | |
| 45 | 805 }; |
| 60 | 806 clients++; |
| 45 | 807 new Thread(sender).start(); |
| 808 | |
| 809 } | |
| 60 | 810 |
| 69 | 811 |
| 812 public void dump32(LinkedList<ByteBuffer>bufs) { | |
| 813 int len =0; | |
| 814 for(ByteBuffer b: bufs) len += b.remaining(); | |
| 815 ByteBuffer top = bufs.getFirst(); | |
| 816 ByteBuffer end = bufs.getLast(); | |
| 817 System.err.println("length: "+len); | |
| 818 System.err.print("head 0: "); | |
| 819 for(int i = 0; i<16 && i < top.remaining(); i++) { | |
| 820 System.err.print(" "+ top.get(i)); | |
| 821 } | |
| 822 System.err.print("tail 0: "); | |
| 823 for(int i = 0; i<16 && i < end.remaining(); i++) { | |
| 824 System.err.print(" "+end.get(i)); | |
| 825 } | |
| 826 System.err.println(); | |
| 827 } | |
| 828 | |
| 829 private Iterable<Byte> byteBufferIterator(final LinkedList<ByteBuffer> in) { | |
| 830 return new Iterable<Byte>() { | |
| 831 public Iterator<Byte> iterator() { | |
| 832 return new Iterator<Byte>() { | |
| 833 int bytes = 0; | |
| 834 int buffers = 0; | |
| 835 public boolean hasNext() { | |
| 836 for(;;) { | |
| 837 if (buffers>=in.size()) return false; | |
| 838 ByteBuffer b = in.get(buffers); | |
| 839 if (! (bytes<b.remaining())) { | |
| 840 buffers ++; bytes=0; | |
| 841 } else return true; | |
| 842 } | |
| 843 } | |
| 844 public Byte next() { | |
| 845 ByteBuffer bf =in.get(buffers); | |
| 846 byte b = bf.get(bytes++); | |
| 847 if (bf.remaining()<=bytes) { | |
| 848 buffers++; | |
| 849 bytes = 0; | |
| 850 } | |
| 851 // System.out.print(b); | |
| 852 return b; | |
| 853 } | |
| 854 public void remove() { | |
| 855 } | |
| 856 }; | |
| 857 } | |
| 858 }; | |
| 859 } | |
| 860 | |
| 45 | 861 } |
| 60 | 862 |
| 863 |