Mercurial > hg > Members > nobuyasu > tightVNCProxy
annotate src/myVncProxy/MyRfbProto.java @ 154:6606b71b64a6
modify RFB Protocol Version. From 3.998 to 3.855
| author | e085711 |
|---|---|
| date | Tue, 20 Sep 2011 05:56:24 +0900 |
| parents | 4fca6f516880 |
| children | 0510022e9e92 |
| rev | line source |
|---|---|
| 24 | 1 package myVncProxy; |
| 54 | 2 |
| 88 | 3 import static org.junit.Assert.*; |
| 4 | |
| 25 | 5 import java.awt.Graphics; |
| 6 import java.awt.Image; | |
| 7 import java.awt.image.BufferedImage; | |
| 8 import java.io.BufferedOutputStream; | |
| 15 | 9 import java.io.BufferedReader; |
| 25 | 10 import java.io.ByteArrayInputStream; |
| 11 import java.io.ByteArrayOutputStream; | |
| 10 | 12 import java.io.IOException; |
| 43 | 13 import java.io.InputStream; |
| 15 | 14 import java.io.InputStreamReader; |
| 23 | 15 import java.net.BindException; |
| 10 | 16 import java.net.ServerSocket; |
| 17 import java.net.Socket; | |
| 90 | 18 import java.nio.ByteBuffer; |
| 93 | 19 import java.util.Iterator; |
| 10 | 20 import java.util.LinkedList; |
| 21 | |
| 25 | 22 import javax.imageio.ImageIO; |
| 23 | |
| 88 | 24 import org.junit.Test; |
| 25 | |
| 54 | 26 import myVncProxy.MulticastQueue.Client; |
| 27 | |
| 40 | 28 import java.util.concurrent.ExecutorService; |
|
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29 import java.util.concurrent.atomic.AtomicInteger; |
| 80 | 30 import java.util.zip.DataFormatException; |
| 31 import java.util.zip.Deflater; | |
| 32 import java.util.zip.Inflater; | |
| 40 | 33 import java.io.OutputStream; |
| 10 | 34 |
| 88 | 35 public |
| 10 | 36 class MyRfbProto extends RfbProto { |
| 154 | 37 final static String versionMsg_3_855 = "RFB 003.855\n"; |
| 65 | 38 /** |
| 154 | 39 * CheckMillis is one of new msgType for RFB 3.855. |
| 65 | 40 */ |
| 90 | 41 final static byte SpeedCheckMillis = 4; |
| 83 | 42 private static final int INFLATE_BUFSIZE = 1024*100; |
| 65 | 43 boolean printStatusFlag = false; |
| 44 long startCheckTime; | |
| 54 | 45 |
| 18 | 46 private int messageType; |
| 47 private int rectangles; | |
| 23 | 48 private int rectX; |
| 49 private int rectY; | |
| 50 private int rectW; | |
| 51 private int rectH; | |
| 18 | 52 private int encoding; |
| 27 | 53 private int zLen; |
| 104 | 54 private boolean clicomp = false; |
| 18 | 55 |
| 23 | 56 private ServerSocket servSock; |
| 144 | 57 protected int acceptPort; |
| 10 | 58 private byte initData[]; |
| 54 | 59 private LinkedList<Socket> cliListTmp; |
| 60 private LinkedList<Socket> cliList; | |
| 27 | 61 boolean createBimgFlag; |
| 54 | 62 |
| 40 | 63 ExecutorService executor; |
| 54 | 64 |
| 25 | 65 byte[] pngBytes; |
| 54 | 66 |
| 102 | 67 // private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MostRecentMultiCast<LinkedList<ByteBuffer>>(10); |
| 68 private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MulticastQueue<LinkedList<ByteBuffer>>(); | |
| 80 | 69 private int clients = 0; |
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70 private Inflater inflater = new Inflater(); |
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71 private Deflater deflater = new Deflater(); |
| 130 | 72 private CreateThread geth; |
| 73 | |
| 88 | 74 public |
| 75 MyRfbProto() throws IOException { | |
| 76 } | |
| 77 | |
| 54 | 78 MyRfbProto(String h, int p, VncViewer v) throws IOException { |
| 10 | 79 super(h, p, v); |
| 80 } | |
| 81 | |
| 130 | 82 MyRfbProto(String h, int p, CreateThread geth) throws IOException { |
| 128 | 83 super(h, p); |
| 130 | 84 this.geth = geth; |
| 128 | 85 } |
| 130 | 86 |
| 13 | 87 MyRfbProto(String h, int p) throws IOException { |
| 88 super(h, p); | |
| 89 } | |
| 24 | 90 |
| 44 | 91 // over write |
| 43 | 92 void writeVersionMsg() throws IOException { |
| 93 clientMajor = 3; | |
| 154 | 94 if (serverMinor == 855) { |
| 95 clientMinor = 855; | |
| 96 os.write(versionMsg_3_855.getBytes()); | |
| 43 | 97 } else if (serverMajor > 3 || serverMinor >= 8) { |
| 98 clientMinor = 8; | |
| 99 os.write(versionMsg_3_8.getBytes()); | |
| 100 } else if (serverMinor >= 7) { | |
| 101 clientMinor = 7; | |
| 102 os.write(versionMsg_3_7.getBytes()); | |
| 103 } else { | |
| 104 clientMinor = 3; | |
| 105 os.write(versionMsg_3_3.getBytes()); | |
| 106 } | |
| 107 protocolTightVNC = false; | |
| 108 initCapabilities(); | |
| 109 } | |
| 110 | |
| 54 | 111 void initServSock(int port) throws IOException { |
| 10 | 112 servSock = new ServerSocket(port); |
| 23 | 113 acceptPort = port; |
| 10 | 114 } |
| 54 | 115 |
| 153 | 116 /* |
| 117 * default port number is 5999. | |
| 118 */ | |
| 80 | 119 void selectPort(int p) { |
| 144 | 120 if(servSock != null ) return ; |
| 80 | 121 int port = p; |
| 54 | 122 while (true) { |
| 123 try { | |
| 80 | 124 initServSock(port); |
| 23 | 125 break; |
| 54 | 126 } catch (BindException e) { |
| 80 | 127 port++; |
| 23 | 128 continue; |
| 54 | 129 } catch (IOException e) { |
| 10 | 130 |
| 23 | 131 } |
| 132 } | |
| 80 | 133 System.out.println("accept port = " + port); |
| 23 | 134 } |
| 54 | 135 |
| 136 int getAcceptPort() { | |
| 23 | 137 return acceptPort; |
| 138 } | |
| 54 | 139 |
| 10 | 140 void setSoTimeout(int num) throws IOException { |
| 141 servSock.setSoTimeout(num); | |
| 142 } | |
| 54 | 143 |
| 10 | 144 Socket accept() throws IOException { |
| 145 return servSock.accept(); | |
| 146 } | |
| 147 | |
| 54 | 148 void addSock(Socket sock) { |
| 10 | 149 cliList.add(sock); |
| 150 } | |
| 54 | 151 |
| 152 void addSockTmp(Socket sock) { | |
| 153 System.out.println("connected " + sock.getInetAddress()); | |
| 27 | 154 cliListTmp.add(sock); |
| 155 } | |
| 54 | 156 |
| 10 | 157 boolean markSupported() { |
| 158 return is.markSupported(); | |
| 159 } | |
| 54 | 160 |
| 10 | 161 void readServerInit() throws IOException { |
| 54 | 162 |
| 78 | 163 is.mark(255); |
| 10 | 164 skipBytes(20); |
| 165 int nlen = readU32(); | |
| 54 | 166 int blen = 20 + 4 + nlen; |
| 10 | 167 initData = new byte[blen]; |
| 78 | 168 is.reset(); |
| 10 | 169 |
| 78 | 170 is.mark(blen); |
| 10 | 171 readFully(initData); |
| 78 | 172 is.reset(); |
| 54 | 173 |
| 10 | 174 framebufferWidth = readU16(); |
| 175 framebufferHeight = readU16(); | |
| 176 bitsPerPixel = readU8(); | |
| 177 depth = readU8(); | |
| 178 bigEndian = (readU8() != 0); | |
| 179 trueColour = (readU8() != 0); | |
| 180 redMax = readU16(); | |
| 181 greenMax = readU16(); | |
| 182 blueMax = readU16(); | |
| 183 redShift = readU8(); | |
| 184 greenShift = readU8(); | |
| 185 blueShift = readU8(); | |
| 186 byte[] pad = new byte[3]; | |
| 187 readFully(pad); | |
| 188 int nameLength = readU32(); | |
| 189 byte[] name = new byte[nameLength]; | |
| 190 readFully(name); | |
| 191 desktopName = new String(name); | |
| 192 | |
| 193 // Read interaction capabilities (TightVNC protocol extensions) | |
| 194 if (protocolTightVNC) { | |
| 195 int nServerMessageTypes = readU16(); | |
| 196 int nClientMessageTypes = readU16(); | |
| 197 int nEncodingTypes = readU16(); | |
| 198 readU16(); | |
| 199 readCapabilityList(serverMsgCaps, nServerMessageTypes); | |
| 200 readCapabilityList(clientMsgCaps, nClientMessageTypes); | |
| 201 readCapabilityList(encodingCaps, nEncodingTypes); | |
| 202 } | |
| 203 | |
| 204 inNormalProtocol = true; | |
| 205 } | |
| 206 | |
| 54 | 207 void sendRfbVersion(OutputStream os) throws IOException { |
| 138 | 208 // os.write(versionMsg_3_8.getBytes()); |
| 154 | 209 os.write(versionMsg_3_855.getBytes()); |
| 43 | 210 } |
| 54 | 211 |
| 131 | 212 void readVersionMsg(InputStream is, OutputStream os) throws IOException { |
| 45 | 213 |
| 214 byte[] b = new byte[12]; | |
| 215 | |
| 216 is.read(b); | |
| 217 | |
| 218 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 219 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 220 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 221 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 222 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 223 throw new IOException("Host " + host + " port " + port | |
| 224 + " is not an RFB server"); | |
| 225 } | |
| 226 | |
| 227 serverMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); | |
| 228 serverMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 229 | |
| 230 if (serverMajor < 3) { | |
| 231 throw new IOException( | |
| 141 | 232 "RFB server does not support protocol version 3"); |
| 54 | 233 } |
| 234 | |
| 154 | 235 if (serverMinor == 855) { |
| 131 | 236 sendPortNumber(os); |
| 130 | 237 } |
| 238 | |
| 239 } | |
| 240 | |
| 131 | 241 void sendPortNumber(OutputStream os) throws IOException { |
| 130 | 242 byte[] b = new byte[4]; |
| 243 b = castIntByte(geth.port); | |
| 244 os.write(b); | |
| 54 | 245 } |
| 246 | |
| 43 | 247 void sendSecurityType(OutputStream os) throws IOException { |
| 248 // number-of-security-types | |
| 249 os.write(1); | |
| 54 | 250 // security-types |
| 43 | 251 // 1:None |
| 252 os.write(1); | |
| 253 } | |
| 54 | 254 |
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255 void readSecType(InputStream is) throws IOException { |
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256 byte[] b = new byte[1]; |
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257 is.read(b); |
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258 |
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259 } |
| 54 | 260 |
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261 void sendSecResult(OutputStream os) throws IOException { |
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262 byte[] b = castIntByte(0); |
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263 os.write(b); |
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264 } |
| 54 | 265 |
| 43 | 266 void readClientInit(InputStream in) throws IOException { |
| 267 byte[] b = new byte[0]; | |
| 268 in.read(b); | |
| 269 } | |
| 54 | 270 |
| 271 void sendInitData(OutputStream os) throws IOException { | |
| 272 os.write(initData); | |
| 10 | 273 } |
| 274 | |
| 54 | 275 |
| 276 void sendPngImage() { | |
| 277 try { | |
| 278 for (Socket cli : cliListTmp) { | |
| 279 try { | |
| 27 | 280 sendPngData(cli); |
| 281 addSock(cli); | |
| 54 | 282 } catch (IOException e) { |
| 27 | 283 // if socket closed |
| 284 cliListTmp.remove(cli); | |
| 285 } | |
| 286 } | |
| 54 | 287 // System.out.println("cliSize="+cliSize()); |
| 288 } catch (Exception e) { | |
| 27 | 289 } |
| 290 cliListTmp.clear(); | |
| 291 } | |
| 292 | |
| 15 | 293 boolean ready() throws IOException { |
| 294 BufferedReader br = new BufferedReader(new InputStreamReader(is)); | |
| 295 return br.ready(); | |
| 54 | 296 } |
| 10 | 297 |
| 54 | 298 int cliSize() { |
| 10 | 299 return cliList.size(); |
| 54 | 300 } |
| 301 | |
| 302 void printNumBytesRead() { | |
| 303 System.out.println("numBytesRead=" + numBytesRead); | |
| 304 } | |
| 305 | |
| 306 | |
| 61 | 307 |
| 54 | 308 void regiFramebufferUpdate() throws IOException { |
| 78 | 309 is.mark(20); |
| 80 | 310 messageType = readU8(); // 0 |
| 311 skipBytes(1); // 1 | |
| 312 rectangles = readU16(); // 2 | |
| 313 rectX = readU16(); // 4 | |
| 314 rectY = readU16(); // 6 | |
| 315 rectW = readU16(); // 8 | |
| 316 rectH = readU16(); // 10 | |
| 317 encoding = readU32(); // 12 | |
| 122 | 318 // System.out.println("encoding = "+encoding); |
| 107 | 319 if (encoding == EncodingZRLE|| encoding==EncodingZRLEE||encoding==EncodingZlib) |
| 27 | 320 zLen = readU32(); |
| 80 | 321 else |
| 322 zLen = 0; | |
| 78 | 323 is.reset(); |
| 127 | 324 |
| 15 | 325 } |
| 54 | 326 |
| 61 | 327 int checkAndMark() throws IOException { |
| 67 | 328 int dataLen; |
| 329 switch (encoding) { | |
| 330 case RfbProto.EncodingRaw: | |
| 331 dataLen = rectW * rectH * 4 + 16; | |
| 130 | 332 // is.mark(dataLen); |
| 128 | 333 break; |
| 67 | 334 case RfbProto.EncodingCopyRect: |
| 335 dataLen = 16 + 4; | |
| 130 | 336 // is.mark(dataLen); |
| 67 | 337 break; |
| 338 case RfbProto.EncodingRRE: | |
| 339 case RfbProto.EncodingCoRRE: | |
| 340 case RfbProto.EncodingHextile: | |
| 80 | 341 case RfbProto.EncodingTight: |
| 342 dataLen = zLen + 20; | |
| 130 | 343 // is.mark(dataLen); |
| 128 | 344 break; |
| 67 | 345 case RfbProto.EncodingZlib: |
| 27 | 346 case RfbProto.EncodingZRLE: |
| 107 | 347 case RfbProto.EncodingZRLEE: |
| 126 | 348 dataLen = zLen + 20; |
| 130 | 349 // is.mark(dataLen); |
| 78 | 350 break; |
| 351 case RfbProto.EncodingXCursor: | |
| 352 case RfbProto.EncodingRichCursor: | |
| 353 int pixArray = rectW * rectH * 4; | |
| 354 int u8Array = (int)Math.floor((rectW + 7)/8) * rectH; | |
| 355 dataLen = pixArray + u8Array; | |
| 356 printFramebufferUpdate(); | |
| 130 | 357 // is.mark(dataLen); |
| 27 | 358 break; |
| 23 | 359 default: |
| 61 | 360 dataLen = 1000000; |
| 130 | 361 // is.mark(dataLen); |
| 54 | 362 } |
| 61 | 363 return dataLen; |
| 364 } | |
| 65 | 365 |
| 366 | |
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367 void sendDataToClient() throws Exception { |
| 61 | 368 regiFramebufferUpdate(); |
| 153 | 369 // printFramebufferUpdate(); |
| 61 | 370 int dataLen = checkAndMark(); |
| 153 | 371 readSendData(dataLen); |
| 23 | 372 } |
| 54 | 373 |
| 374 BufferedImage createBufferedImage(Image img) { | |
| 375 BufferedImage bimg = new BufferedImage(img.getWidth(null), | |
| 376 img.getHeight(null), BufferedImage.TYPE_INT_RGB); | |
| 27 | 377 |
| 25 | 378 Graphics g = bimg.getGraphics(); |
| 379 g.drawImage(img, 0, 0, null); | |
| 380 g.dispose(); | |
| 381 return bimg; | |
| 382 } | |
| 383 | |
| 54 | 384 void createPngBytes(BufferedImage bimg) throws IOException { |
| 385 pngBytes = getImageBytes(bimg, "png"); | |
| 25 | 386 } |
| 54 | 387 |
| 388 byte[] getBytes(BufferedImage img) throws IOException { | |
| 25 | 389 byte[] b = getImageBytes(img, "png"); |
| 390 return b; | |
| 391 } | |
| 54 | 392 |
| 393 byte[] getImageBytes(BufferedImage image, String imageFormat) | |
| 394 throws IOException { | |
| 25 | 395 ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| 396 BufferedOutputStream os = new BufferedOutputStream(bos); | |
| 397 image.flush(); | |
| 398 ImageIO.write(image, imageFormat, os); | |
| 399 os.flush(); | |
| 400 os.close(); | |
| 401 return bos.toByteArray(); | |
| 402 } | |
| 403 | |
| 54 | 404 void sendPngData(Socket sock) throws IOException { |
| 26 | 405 byte[] dataLength = castIntByte(pngBytes.length); |
| 406 sock.getOutputStream().write(dataLength); | |
| 25 | 407 sock.getOutputStream().write(pngBytes); |
| 408 } | |
| 54 | 409 |
| 410 byte[] castIntByte(int len) { | |
| 26 | 411 byte[] b = new byte[4]; |
| 54 | 412 b[0] = (byte) ((len >>> 24) & 0xFF); |
| 413 b[1] = (byte) ((len >>> 16) & 0xFF); | |
| 414 b[2] = (byte) ((len >>> 8) & 0xFF); | |
| 415 b[3] = (byte) ((len >>> 0) & 0xFF); | |
| 26 | 416 return b; |
| 417 } | |
| 54 | 418 |
| 419 BufferedImage createBimg() throws IOException { | |
| 25 | 420 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes)); |
| 421 return bimg; | |
| 422 } | |
| 104 | 423 |
| 54 | 424 void printFramebufferUpdate() { |
| 425 | |
| 18 | 426 System.out.println("messageType=" + messageType); |
| 54 | 427 System.out.println("rectangles=" + rectangles); |
| 18 | 428 System.out.println("encoding=" + encoding); |
| 78 | 429 System.out.println("rectX = "+rectX+": rectY = "+rectY); |
| 430 System.out.println("rectW = "+rectW+": rectH = "+rectH); | |
| 54 | 431 switch (encoding) { |
| 23 | 432 case RfbProto.EncodingRaw: |
| 54 | 433 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 |
| 434 + 16); | |
| 23 | 435 break; |
| 436 default: | |
| 437 } | |
| 18 | 438 } |
| 130 | 439 int returnMsgtype() { |
| 440 return messageType; | |
| 441 } | |
| 442 | |
| 65 | 443 |
| 77 | 444 void readSpeedCheck() throws IOException { |
| 445 byte[] b = new byte[1]; | |
| 65 | 446 readFully(b); |
| 447 } | |
| 448 | |
| 77 | 449 void startSpeedCheck() { |
| 90 | 450 ByteBuffer b = ByteBuffer.allocate(10); |
| 451 b.put((byte)SpeedCheckMillis); | |
| 452 b.flip(); | |
| 66 | 453 startCheckTime = System.currentTimeMillis(); |
| 454 System.out.println("startChckTime = "+ startCheckTime); | |
| 90 | 455 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); |
| 84 | 456 bufs.add(b); |
| 457 multicastqueue.put(bufs); | |
| 65 | 458 } |
| 459 | |
| 77 | 460 void endSpeedCheck() { |
| 65 | 461 long accTime = System.currentTimeMillis(); |
| 462 long time = accTime - startCheckTime; | |
| 463 System.out.println("checkMillis: " + time); | |
| 464 } | |
| 465 | |
| 466 | |
| 467 synchronized void changeStatusFlag() { | |
| 468 printStatusFlag = true; | |
| 469 } | |
| 470 | |
| 471 void printMills() { | |
| 472 if(printStatusFlag) { | |
| 473 | |
| 474 changeStatusFlag(); | |
| 475 } else { | |
| 476 changeStatusFlag(); | |
| 477 } | |
| 478 } | |
| 479 | |
| 77 | 480 void speedCheckMillis() { |
| 87 | 481 Runnable stdin = new Runnable() { |
| 66 | 482 public void run() { |
| 483 int c; | |
| 484 try { | |
| 485 while( (c = System.in.read()) != -1 ) { | |
| 486 switch(c) { | |
| 487 case 's': | |
| 488 break; | |
| 489 default: | |
| 87 | 490 startSpeedCheck(); |
| 66 | 491 break; |
| 492 } | |
| 493 } | |
| 494 }catch(IOException e){ | |
| 495 System.out.println(e); | |
| 496 } | |
| 497 } | |
| 498 }; | |
| 499 | |
| 500 new Thread(stdin).start(); | |
| 501 } | |
| 502 | |
| 87 | 503 /** |
| 504 * gzip byte arrays | |
| 505 * @param deflater | |
| 506 * @param inputs | |
| 507 * byte data[] | |
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508 * @param inputIndex |
| 87 | 509 * @param outputs |
| 510 * byte data[] | |
| 511 * @return byte length in last byte array | |
| 512 * @throws IOException | |
| 513 */ | |
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514 public int zip(Deflater deflater,LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs) throws IOException { |
| 102 | 515 int len = 0; |
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516 ByteBuffer c1= ByteBuffer.allocate(INFLATE_BUFSIZE); |
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517 while(inputIndex < inputs.size() ) { |
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518 ByteBuffer b1 = inputs.get(inputIndex++); |
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519 deflater.setInput(b1.array(),b1.position(),b1.remaining()); |
| 106 | 520 /** |
| 521 * If we finish() stream and reset() it, Deflater start new gzip stream, this makes continuous zlib reader unhappy. | |
| 522 * if we remove finish(), Deflater.deflate() never flushes its output. The original zlib deflate has flush flag. I'm pretty | |
| 523 * sure this a kind of bug of Java library. | |
| 524 */ | |
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525 if (inputIndex==inputs.size()) |
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526 deflater.finish(); |
| 106 | 527 int len1 = 0; |
| 86 | 528 do { |
| 106 | 529 len1 = deflater.deflate(c1.array(),c1.position(),c1.remaining()); |
| 102 | 530 if (len1>0) { |
| 531 len += len1; | |
| 532 c1.position(c1.position()+len1); | |
| 533 if (c1.remaining()==0) { | |
| 534 c1.flip(); outputs.addLast(c1); | |
| 535 c1 = ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 536 } | |
| 86 | 537 } |
| 106 | 538 } while (len1 >0 || !deflater.needsInput()); // &&!deflater.finished()); |
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539 } |
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540 if (c1.position()!=0) { |
| 102 | 541 c1.flip(); outputs.addLast(c1); |
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542 } |
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543 deflater.reset(); |
| 90 | 544 return len; |
| 86 | 545 } |
| 87 | 546 |
| 547 /** | |
| 548 * gunzip byte arrays | |
| 549 * @param inflater | |
| 550 * @param inputs | |
| 551 * byte data[] | |
| 552 * @param outputs | |
| 553 * byte data[] | |
| 91 | 554 *@return number of total bytes |
| 87 | 555 * @throws IOException |
| 556 */ | |
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557 public int unzip(Inflater inflater, LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs,int bufSize) |
| 88 | 558 throws DataFormatException { |
| 102 | 559 int len=0; |
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560 ByteBuffer buf = ByteBuffer.allocate(bufSize); |
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561 while (inputIndex < inputs.size()) { |
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562 ByteBuffer input = inputs.get(inputIndex++); |
| 102 | 563 inflater.setInput(input.array(),input.position(),input.limit()); |
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564 // if (inputIndex==inputs.size()) if inflater/deflater has symmetry, we need this |
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565 // inflater.end(); but this won't work |
| 88 | 566 do { |
| 102 | 567 int len0 = inflater.inflate(buf.array(),buf.position(),buf.remaining()); |
| 568 if (len0>0) { | |
| 569 buf.position(buf.position()+len0); | |
| 570 len += len0; | |
| 571 if (buf.remaining()==0) { | |
| 572 buf.flip(); | |
| 573 outputs.addLast(buf); | |
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574 buf = ByteBuffer.allocate(bufSize); |
| 102 | 575 } |
| 91 | 576 } |
| 102 | 577 } while (!inflater.needsInput()); |
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578 } |
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579 if (buf.position()!=0) { |
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580 buf.flip(); |
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581 outputs.addLast(buf); |
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582 } |
| 90 | 583 return len; |
| 86 | 584 } |
| 65 | 585 |
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586 /** |
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587 * send data to clients |
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588 * @param dataLen |
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589 * @throws IOException |
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590 * @throws DataFormatException |
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591 * |
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592 * Zlibed packet is compressed in context dependent way, that is, it have to send from the beginning. But this is |
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593 * impossible. So we have to compress it again for each clients. Separate deflater for each clients is necessary. |
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594 * |
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595 * Java's deflater does not support flush. This means to get the result, we have to finish the compression. Reseting |
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596 * start new compression, but it is not accepted well in zlib continuous reading. So we need new Encoding ZRLEE |
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597 * which reset decoder for each packet. ZRLEE can be invisible from user, but it have to be implemented in the clients. |
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598 * ZRLEE compression is not context dependent, so no recompression is necessary. |
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599 */ |
| 86 | 600 void readSendData(int dataLen) throws IOException, DataFormatException { |
| 90 | 601 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); |
| 602 ByteBuffer header = ByteBuffer.allocate(16); | |
| 603 readFully(header.array(),0,16); | |
| 604 header.limit(16); | |
| 605 if (header.get(0)==RfbProto.FramebufferUpdate) { | |
| 606 int encoding = header.getInt(12); | |
| 107 | 607 if (encoding==RfbProto.EncodingZRLE||encoding==RfbProto.EncodingZlib) { // ZRLEE is already recompressed |
| 90 | 608 ByteBuffer len = ByteBuffer.allocate(4); |
| 609 readFully(len.array(),0,4); len.limit(4); | |
| 610 ByteBuffer inputData = ByteBuffer.allocate(dataLen-20); | |
| 151 | 611 |
| 612 startTiming(); | |
| 90 | 613 readFully(inputData.array(),0,inputData.capacity()); inputData.limit(dataLen-20); |
| 151 | 614 stopTiming(); |
| 615 | |
| 90 | 616 LinkedList<ByteBuffer>inputs = new LinkedList<ByteBuffer>(); |
| 88 | 617 inputs.add(inputData); |
| 107 | 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 | |
| 87 | 629 bufs.addFirst(header); |
| 86 | 630 multicastqueue.put(bufs); |
| 130 | 631 |
| 632 // is.reset(); | |
| 86 | 633 return ; |
| 634 } | |
| 87 | 635 bufs.add(header); |
| 636 if (dataLen>16) { | |
| 90 | 637 ByteBuffer b = ByteBuffer.allocate(dataLen-16); |
| 638 readFully(b.array(),0,dataLen-16); b.limit(dataLen-16); | |
| 87 | 639 bufs.add(b); |
| 640 } | |
| 86 | 641 multicastqueue.put(bufs); |
| 135 | 642 // is.reset(); |
| 643 return ; | |
| 130 | 644 } |
| 645 is.reset(); | |
| 86 | 646 |
| 647 // It may be compressed. We can inflate here to avoid repeating clients decompressing here, | |
| 648 // but it may generate too many large data. It is better to do it in each client. | |
| 649 // But we have do inflation for all input data, so we have to do it here. | |
| 650 } | |
| 43 | 651 |
| 71 | 652 void newClient(AcceptThread acceptThread, final Socket newCli, |
| 54 | 653 final OutputStream os, final InputStream is) throws IOException { |
| 654 // createBimgFlag = true; | |
| 655 // rfb.addSockTmp(newCli); | |
| 656 // addSock(newCli); | |
| 112 | 657 final int myId = clients; |
| 90 | 658 final Client <LinkedList<ByteBuffer>> c = multicastqueue.newClient(); |
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659 final AtomicInteger writerRunning = new AtomicInteger(); |
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660 writerRunning.set(1); |
| 112 | 661 /** |
| 662 * Timeout thread. If a client is suspended, it has top of queue indefinitely, which caused memory | |
| 663 * overflow. After the timeout, we poll the queue and discard it. Start long wait if writer is running. | |
| 664 */ | |
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665 final Runnable timer = new Runnable() { |
| 128 | 666 public void run() { |
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667 int count = 0; |
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668 for(;;) { |
| 114 | 669 long timeout = 30000/8; |
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670 try { |
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671 synchronized(this) { |
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672 int state,flag; |
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673 writerRunning.set(0); |
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674 wait(timeout); |
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675 flag = 0; |
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676 while((state=writerRunning.get())==0) { |
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677 c.poll(); // discard, should be timeout |
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678 count++; |
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679 if (flag==0) { |
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680 System.out.println("Discarding "+myId + " count="+ count); flag = 1; |
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681 } |
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682 wait(10); // if this is too short, writer cannot take the poll, if this is too long, memory will overflow... |
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683 } |
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684 if (flag==1) System.out.println("Resuming "+myId + " count="+count); |
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685 if (state!=1) { |
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686 System.out.println("Client died "+myId); |
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687 break; |
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688 } |
| 128 | 689 } |
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690 } catch (InterruptedException e) { |
| 128 | 691 } |
| 692 } | |
| 693 } | |
| 694 }; | |
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695 new Thread(timer).start(); |
| 112 | 696 /** |
| 697 * discard all incoming from clients | |
| 698 */ | |
| 102 | 699 final Runnable reader = new Runnable() { |
| 700 public void run() { | |
| 701 byte b[] = new byte[4096]; | |
| 702 for(;;) { | |
| 703 try { | |
| 704 int c = is.read(b); | |
| 705 if (c<=0) throw new IOException(); | |
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706 // System.out.println("client read "+c); |
| 102 | 707 } catch (IOException e) { |
| 708 try { | |
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709 writerRunning.set(2); |
| 102 | 710 os.close(); |
| 711 is.close(); | |
| 712 } catch (IOException e1) { | |
| 713 } | |
| 714 return; | |
| 715 } | |
| 716 } | |
| 717 } | |
| 718 }; | |
| 112 | 719 /** |
| 720 * send packets to a client | |
| 721 */ | |
| 54 | 722 Runnable sender = new Runnable() { |
| 723 public void run() { | |
|
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724 writerRunning.set(1); |
| 54 | 725 try { |
| 65 | 726 /** |
| 727 * initial connection of RFB protocol | |
| 728 */ | |
| 54 | 729 sendRfbVersion(os); |
| 131 | 730 // readVersionMsg(is); |
| 731 readVersionMsg(is,os); | |
| 54 | 732 sendSecurityType(os); |
| 733 readSecType(is); | |
| 734 sendSecResult(os); | |
| 735 readClientInit(is); | |
| 736 sendInitData(os); | |
| 112 | 737 new Thread(reader).start(); // discard incoming packet here after. |
| 153 | 738 writeFramebufferUpdateRequest(0,0, framebufferWidth, framebufferHeight, false ); |
| 54 | 739 for (;;) { |
| 90 | 740 LinkedList<ByteBuffer> bufs = c.poll(); |
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741 int inputIndex = 0; |
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742 ByteBuffer header = bufs.get(inputIndex); |
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743 if (header==null) continue; |
| 90 | 744 if (header.get(0)==RfbProto.FramebufferUpdate) { |
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745 // System.out.println("client "+ myId); |
| 87 | 746 } |
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747 writeToClient(os, bufs, inputIndex); |
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748 writerRunning.set(1); // yes my client is awaking. |
| 54 | 749 } |
| 750 } catch (IOException e) { | |
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751 try { |
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752 writerRunning.set(2); |
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753 os.close(); |
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754 } catch (IOException e1) { |
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755 } |
| 87 | 756 /* if socket closed cliList.remove(newCli); */ |
| 54 | 757 } |
| 758 } | |
| 128 | 759 |
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760 public void writeToClient(final OutputStream os, |
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761 LinkedList<ByteBuffer> bufs, int inputIndex) |
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762 throws IOException { |
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763 while(inputIndex < bufs.size()) { |
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764 ByteBuffer b = bufs.get(inputIndex++); |
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765 os.write(b.array(), b.position(), b.limit()); |
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766 } |
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767 os.flush(); |
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768 } |
| 54 | 769 }; |
| 80 | 770 clients++; |
| 54 | 771 new Thread(sender).start(); |
| 772 | |
| 773 } | |
| 66 | 774 |
| 775 | |
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776 public void dump32(LinkedList<ByteBuffer>bufs) { |
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777 int len =0; |
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778 for(ByteBuffer b: bufs) len += b.remaining(); |
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779 ByteBuffer top = bufs.getFirst(); |
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780 ByteBuffer end = bufs.getLast(); |
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781 System.err.println("length: "+len); |
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782 System.err.print("head 0: "); |
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783 for(int i = 0; i<16 && i < top.remaining(); i++) { |
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784 System.err.print(" "+ top.get(i)); |
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785 } |
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786 System.err.print("tail 0: "); |
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787 for(int i = 0; i<16 && i < end.remaining(); i++) { |
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788 System.err.print(" "+end.get(i)); |
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789 } |
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790 System.err.println(); |
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791 } |
| 88 | 792 |
| 793 @Test | |
| 794 public void test1() { | |
| 795 try { | |
| 90 | 796 LinkedList<ByteBuffer> in = new LinkedList<ByteBuffer>(); |
| 797 LinkedList<ByteBuffer> out = new LinkedList<ByteBuffer>(); | |
| 798 LinkedList<ByteBuffer> out2 = new LinkedList<ByteBuffer>(); | |
| 107 | 799 // if (false) { |
| 800 // for(int i=0;i<10;i++) { | |
| 801 // in.add(ByteBuffer.wrap("test1".getBytes())); | |
| 802 // in.add(ByteBuffer.wrap("test2".getBytes())); | |
| 803 // in.add(ByteBuffer.wrap("test3".getBytes())); | |
| 804 // in.add(ByteBuffer.wrap("test44".getBytes())); | |
| 805 // } | |
| 806 // } else | |
| 807 { | |
| 106 | 808 String t = ""; |
| 809 for(int i=0;i<10;i++) { | |
| 810 t += "test1"; | |
| 811 t += "test2"; | |
| 812 t += "test3"; | |
| 813 t += "test44"; | |
| 814 } | |
| 815 in.add(ByteBuffer.wrap(t.getBytes())); | |
| 816 } | |
| 817 | |
| 92 | 818 LinkedList<ByteBuffer> in1 = clone(in); |
| 90 | 819 |
| 88 | 820 Deflater deflater = new Deflater(); |
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821 zip(deflater,in,0,out); |
| 92 | 822 // LinkedList<ByteBuffer> out3 = clone(out); zipped result is depend on deflator's state |
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823 unzip(inflater, out, 0,out2, INFLATE_BUFSIZE); |
| 106 | 824 // inflater.reset(); |
| 92 | 825 equalByteBuffers(in1, out2); |
| 826 LinkedList<ByteBuffer> out4 = new LinkedList<ByteBuffer>(); | |
| 104 | 827 deflater = new Deflater(); |
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828 zip(deflater,out2,0,out4); |
| 92 | 829 LinkedList<ByteBuffer> out5 = new LinkedList<ByteBuffer>(); |
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830 unzip(inflater,out4,0, out5, INFLATE_BUFSIZE); |
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831 int len = equalByteBuffers(in1,out5); |
| 92 | 832 |
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833 System.out.println("Test Ok. "+len); |
| 88 | 834 } catch (Exception e) { |
| 835 assertEquals(0,1); | |
| 836 } | |
| 837 } | |
| 838 | |
| 92 | 839 private LinkedList<ByteBuffer> clone(LinkedList<ByteBuffer> in) { |
| 840 LinkedList<ByteBuffer> copy = new LinkedList<ByteBuffer>(); | |
| 841 for(ByteBuffer b: in) { | |
| 842 ByteBuffer c = b.duplicate(); | |
| 843 copy.add(c); | |
| 844 } | |
| 845 return copy; | |
| 846 } | |
| 847 | |
| 93 | 848 |
| 849 | |
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850 public int equalByteBuffers(LinkedList<ByteBuffer> in, |
| 92 | 851 LinkedList<ByteBuffer> out2) { |
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852 int len = 0; |
| 93 | 853 Iterable<Byte> i = byteBufferIterator(in); |
| 854 Iterator<Byte> o = byteBufferIterator(out2).iterator(); | |
| 855 | |
| 856 for(int b: i) { | |
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857 len ++; |
| 93 | 858 if (o.hasNext()) { |
| 859 int c = o.next(); | |
| 860 assertEquals(b,c); | |
| 861 } else | |
| 862 assertEquals(0,1); | |
| 863 } | |
| 104 | 864 if (o.hasNext()) |
| 865 assertEquals(0,1); | |
| 93 | 866 // System.out.println(); |
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867 return len; |
| 93 | 868 } |
| 869 | |
| 870 private Iterable<Byte> byteBufferIterator(final LinkedList<ByteBuffer> in) { | |
| 871 return new Iterable<Byte>() { | |
| 872 public Iterator<Byte> iterator() { | |
| 873 return new Iterator<Byte>() { | |
| 874 int bytes = 0; | |
| 875 int buffers = 0; | |
| 876 public boolean hasNext() { | |
| 104 | 877 for(;;) { |
| 878 if (buffers>=in.size()) return false; | |
| 879 ByteBuffer b = in.get(buffers); | |
| 880 if (! (bytes<b.remaining())) { | |
| 881 buffers ++; bytes=0; | |
| 882 } else return true; | |
| 883 } | |
| 92 | 884 } |
| 93 | 885 public Byte next() { |
| 104 | 886 ByteBuffer bf =in.get(buffers); |
| 93 | 887 byte b = bf.get(bytes++); |
| 888 if (bf.remaining()<=bytes) { | |
| 889 buffers++; | |
| 890 bytes = 0; | |
| 891 } | |
| 892 // System.out.print(b); | |
| 893 return b; | |
| 894 } | |
| 895 public void remove() { | |
| 896 } | |
| 897 }; | |
| 92 | 898 } |
| 93 | 899 }; |
| 128 | 900 } |
| 901 | |
| 54 | 902 } |
| 66 | 903 |
| 904 |