Mercurial > hg > Members > nobuyasu > tightVNCProxy
annotate src/myVncProxy/MyRfbProto.java @ 165:107b965effc1
Merge with 1a4bf9888429d0959207963042753f2119b7acce
| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Wed, 19 Oct 2011 12:00:16 +0900 |
| parents | 13458f88d8c9 1a4bf9888429 |
| children | 1d16dcf966e1 |
| 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 |
| 107 | 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; |
| 155 | 62 boolean proxyFlag = true; |
| 54 | 63 |
| 40 | 64 ExecutorService executor; |
| 54 | 65 |
| 25 | 66 byte[] pngBytes; |
| 54 | 67 |
| 102 | 68 // private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MostRecentMultiCast<LinkedList<ByteBuffer>>(10); |
| 69 private MulticastQueue<LinkedList<ByteBuffer>> multicastqueue = new MulticastQueue<LinkedList<ByteBuffer>>(); | |
| 80 | 70 private int clients = 0; |
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71 private Inflater inflater = new Inflater(); |
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72 private Deflater deflater = new Deflater(); |
| 130 | 73 private CreateThread geth; |
| 162 | 74 // private Thread requestThread; |
| 75 private RequestScreenThread rThread; | |
| 76 private Thread requestThread; | |
| 130 | 77 |
| 88 | 78 public |
| 79 MyRfbProto() throws IOException { | |
| 80 } | |
| 81 | |
| 54 | 82 MyRfbProto(String h, int p, VncViewer v) throws IOException { |
| 10 | 83 super(h, p, v); |
| 162 | 84 |
| 85 rThread = new RequestScreenThread(this); | |
| 86 requestThread = new Thread(rThread); | |
| 87 // requestThread = new Thread(new RequestScreenThread(this)); | |
| 10 | 88 } |
| 89 | |
| 130 | 90 MyRfbProto(String h, int p, CreateThread geth) throws IOException { |
| 128 | 91 super(h, p); |
| 130 | 92 this.geth = geth; |
| 155 | 93 proxyFlag = true; |
| 162 | 94 |
| 95 rThread = new RequestScreenThread(this); | |
| 96 requestThread = new Thread(rThread); | |
| 97 // requestThread = new Thread(new RequestScreenThread(this)); | |
| 128 | 98 } |
| 130 | 99 |
| 13 | 100 MyRfbProto(String h, int p) throws IOException { |
| 101 super(h, p); | |
| 162 | 102 |
| 103 rThread = new RequestScreenThread(this); | |
| 104 requestThread = new Thread(rThread); | |
| 105 // requestThread = new Thread(new RequestScreenThread(this)); | |
| 13 | 106 } |
| 162 | 107 |
| 44 | 108 // over write |
| 43 | 109 void writeVersionMsg() throws IOException { |
| 110 clientMajor = 3; | |
| 154 | 111 if (serverMinor == 855) { |
| 112 clientMinor = 855; | |
| 113 os.write(versionMsg_3_855.getBytes()); | |
| 43 | 114 } else if (serverMajor > 3 || serverMinor >= 8) { |
| 115 clientMinor = 8; | |
| 116 os.write(versionMsg_3_8.getBytes()); | |
| 117 } else if (serverMinor >= 7) { | |
| 118 clientMinor = 7; | |
| 119 os.write(versionMsg_3_7.getBytes()); | |
| 120 } else { | |
| 121 clientMinor = 3; | |
| 122 os.write(versionMsg_3_3.getBytes()); | |
| 123 } | |
| 124 protocolTightVNC = false; | |
| 125 initCapabilities(); | |
| 126 } | |
| 127 | |
| 54 | 128 void initServSock(int port) throws IOException { |
| 10 | 129 servSock = new ServerSocket(port); |
| 23 | 130 acceptPort = port; |
| 10 | 131 } |
| 54 | 132 |
| 153 | 133 /* |
| 134 * default port number is 5999. | |
| 135 */ | |
| 80 | 136 void selectPort(int p) { |
| 144 | 137 if(servSock != null ) return ; |
| 80 | 138 int port = p; |
| 54 | 139 while (true) { |
| 140 try { | |
| 80 | 141 initServSock(port); |
| 23 | 142 break; |
| 54 | 143 } catch (BindException e) { |
| 80 | 144 port++; |
| 23 | 145 continue; |
| 54 | 146 } catch (IOException e) { |
| 10 | 147 |
| 23 | 148 } |
| 149 } | |
| 80 | 150 System.out.println("accept port = " + port); |
| 23 | 151 } |
| 54 | 152 |
| 153 int getAcceptPort() { | |
| 23 | 154 return acceptPort; |
| 155 } | |
| 54 | 156 |
| 10 | 157 void setSoTimeout(int num) throws IOException { |
| 158 servSock.setSoTimeout(num); | |
| 159 } | |
| 54 | 160 |
| 10 | 161 Socket accept() throws IOException { |
| 162 return servSock.accept(); | |
| 163 } | |
| 164 | |
| 54 | 165 void addSock(Socket sock) { |
| 10 | 166 cliList.add(sock); |
| 167 } | |
| 54 | 168 |
| 169 void addSockTmp(Socket sock) { | |
| 170 System.out.println("connected " + sock.getInetAddress()); | |
| 27 | 171 cliListTmp.add(sock); |
| 172 } | |
| 54 | 173 |
| 10 | 174 boolean markSupported() { |
| 175 return is.markSupported(); | |
| 176 } | |
| 54 | 177 |
| 10 | 178 void readServerInit() throws IOException { |
| 54 | 179 |
| 78 | 180 is.mark(255); |
| 10 | 181 skipBytes(20); |
| 182 int nlen = readU32(); | |
| 54 | 183 int blen = 20 + 4 + nlen; |
| 10 | 184 initData = new byte[blen]; |
| 78 | 185 is.reset(); |
| 10 | 186 |
| 78 | 187 is.mark(blen); |
| 10 | 188 readFully(initData); |
| 78 | 189 is.reset(); |
| 54 | 190 |
| 10 | 191 framebufferWidth = readU16(); |
| 192 framebufferHeight = readU16(); | |
| 193 bitsPerPixel = readU8(); | |
| 194 depth = readU8(); | |
| 195 bigEndian = (readU8() != 0); | |
| 196 trueColour = (readU8() != 0); | |
| 197 redMax = readU16(); | |
| 198 greenMax = readU16(); | |
| 199 blueMax = readU16(); | |
| 200 redShift = readU8(); | |
| 201 greenShift = readU8(); | |
| 202 blueShift = readU8(); | |
| 203 byte[] pad = new byte[3]; | |
| 204 readFully(pad); | |
| 205 int nameLength = readU32(); | |
| 206 byte[] name = new byte[nameLength]; | |
| 207 readFully(name); | |
| 208 desktopName = new String(name); | |
| 209 | |
| 210 // Read interaction capabilities (TightVNC protocol extensions) | |
| 211 if (protocolTightVNC) { | |
| 212 int nServerMessageTypes = readU16(); | |
| 213 int nClientMessageTypes = readU16(); | |
| 214 int nEncodingTypes = readU16(); | |
| 215 readU16(); | |
| 216 readCapabilityList(serverMsgCaps, nServerMessageTypes); | |
| 217 readCapabilityList(clientMsgCaps, nClientMessageTypes); | |
| 218 readCapabilityList(encodingCaps, nEncodingTypes); | |
| 219 } | |
| 220 | |
| 221 inNormalProtocol = true; | |
| 222 } | |
| 223 | |
| 54 | 224 void sendRfbVersion(OutputStream os) throws IOException { |
| 138 | 225 // os.write(versionMsg_3_8.getBytes()); |
| 154 | 226 os.write(versionMsg_3_855.getBytes()); |
| 43 | 227 } |
| 54 | 228 |
| 155 | 229 int readVersionMsg(InputStream is, OutputStream os) throws IOException { |
| 45 | 230 |
| 231 byte[] b = new byte[12]; | |
| 232 | |
| 233 is.read(b); | |
| 234 | |
| 235 if ((b[0] != 'R') || (b[1] != 'F') || (b[2] != 'B') || (b[3] != ' ') | |
| 236 || (b[4] < '0') || (b[4] > '9') || (b[5] < '0') || (b[5] > '9') | |
| 237 || (b[6] < '0') || (b[6] > '9') || (b[7] != '.') | |
| 238 || (b[8] < '0') || (b[8] > '9') || (b[9] < '0') || (b[9] > '9') | |
| 239 || (b[10] < '0') || (b[10] > '9') || (b[11] != '\n')) { | |
| 240 throw new IOException("Host " + host + " port " + port | |
| 241 + " is not an RFB server"); | |
| 242 } | |
| 243 | |
| 155 | 244 int rfbMajor = (b[4] - '0') * 100 + (b[5] - '0') * 10 + (b[6] - '0'); |
| 245 int rfbMinor = (b[8] - '0') * 100 + (b[9] - '0') * 10 + (b[10] - '0'); | |
| 45 | 246 |
| 155 | 247 if (rfbMajor < 3) { |
| 45 | 248 throw new IOException( |
| 141 | 249 "RFB server does not support protocol version 3"); |
| 54 | 250 } |
| 251 | |
| 155 | 252 if (rfbMinor == 855) { |
| 253 sendProxyFlag(os); | |
| 254 if(proxyFlag)sendPortNumber(os); | |
| 130 | 255 } |
| 155 | 256 return rfbMinor; |
| 257 } | |
| 258 void sendProxyFlag(OutputStream os) throws IOException { | |
| 259 if(proxyFlag) os.write(1); | |
| 260 else os.write(0); | |
| 261 } | |
| 262 | |
| 263 boolean readProxyFlag() throws IOException{ | |
| 264 int flag = readU8(); | |
| 265 if(flag == 1) | |
| 266 return true; | |
| 267 else | |
| 268 return false; | |
| 130 | 269 } |
| 270 | |
| 131 | 271 void sendPortNumber(OutputStream os) throws IOException { |
| 130 | 272 byte[] b = new byte[4]; |
| 273 b = castIntByte(geth.port); | |
| 274 os.write(b); | |
| 54 | 275 } |
| 276 | |
| 43 | 277 void sendSecurityType(OutputStream os) throws IOException { |
| 278 // number-of-security-types | |
| 279 os.write(1); | |
| 54 | 280 // security-types |
| 43 | 281 // 1:None |
| 282 os.write(1); | |
| 283 } | |
| 54 | 284 |
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285 void readSecType(InputStream is) throws IOException { |
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286 byte[] b = new byte[1]; |
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287 is.read(b); |
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288 |
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289 } |
| 54 | 290 |
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291 void sendSecResult(OutputStream os) throws IOException { |
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292 byte[] b = castIntByte(0); |
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293 os.write(b); |
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294 } |
| 54 | 295 |
| 43 | 296 void readClientInit(InputStream in) throws IOException { |
| 297 byte[] b = new byte[0]; | |
| 298 in.read(b); | |
| 299 } | |
| 54 | 300 |
| 301 void sendInitData(OutputStream os) throws IOException { | |
| 302 os.write(initData); | |
| 10 | 303 } |
| 304 | |
| 54 | 305 |
| 306 void sendPngImage() { | |
| 307 try { | |
| 308 for (Socket cli : cliListTmp) { | |
| 309 try { | |
| 27 | 310 sendPngData(cli); |
| 311 addSock(cli); | |
| 54 | 312 } catch (IOException e) { |
| 27 | 313 // if socket closed |
| 314 cliListTmp.remove(cli); | |
| 315 } | |
| 316 } | |
| 54 | 317 // System.out.println("cliSize="+cliSize()); |
| 318 } catch (Exception e) { | |
| 27 | 319 } |
| 320 cliListTmp.clear(); | |
| 321 } | |
| 322 | |
| 15 | 323 boolean ready() throws IOException { |
| 324 BufferedReader br = new BufferedReader(new InputStreamReader(is)); | |
| 325 return br.ready(); | |
| 54 | 326 } |
| 10 | 327 |
| 54 | 328 int cliSize() { |
| 10 | 329 return cliList.size(); |
| 54 | 330 } |
| 331 | |
| 332 void printNumBytesRead() { | |
| 333 System.out.println("numBytesRead=" + numBytesRead); | |
| 334 } | |
| 335 | |
| 336 | |
| 61 | 337 |
| 54 | 338 void regiFramebufferUpdate() throws IOException { |
| 78 | 339 is.mark(20); |
| 80 | 340 messageType = readU8(); // 0 |
| 341 skipBytes(1); // 1 | |
| 342 rectangles = readU16(); // 2 | |
| 343 rectX = readU16(); // 4 | |
| 344 rectY = readU16(); // 6 | |
| 345 rectW = readU16(); // 8 | |
| 346 rectH = readU16(); // 10 | |
| 347 encoding = readU32(); // 12 | |
| 122 | 348 // System.out.println("encoding = "+encoding); |
| 107 | 349 if (encoding == EncodingZRLE|| encoding==EncodingZRLEE||encoding==EncodingZlib) |
| 27 | 350 zLen = readU32(); |
| 80 | 351 else |
| 352 zLen = 0; | |
| 78 | 353 is.reset(); |
| 104 | 354 |
| 15 | 355 } |
| 54 | 356 |
| 61 | 357 int checkAndMark() throws IOException { |
| 358 int dataLen; | |
| 54 | 359 switch (encoding) { |
| 23 | 360 case RfbProto.EncodingRaw: |
| 39 | 361 dataLen = rectW * rectH * 4 + 16; |
| 130 | 362 // is.mark(dataLen); |
| 23 | 363 break; |
| 67 | 364 case RfbProto.EncodingCopyRect: |
| 365 dataLen = 16 + 4; | |
| 130 | 366 // is.mark(dataLen); |
| 67 | 367 break; |
| 368 case RfbProto.EncodingRRE: | |
| 369 case RfbProto.EncodingCoRRE: | |
| 370 case RfbProto.EncodingHextile: | |
| 80 | 371 case RfbProto.EncodingTight: |
| 372 dataLen = zLen + 20; | |
| 130 | 373 // is.mark(dataLen); |
| 80 | 374 break; |
| 67 | 375 case RfbProto.EncodingZlib: |
| 27 | 376 case RfbProto.EncodingZRLE: |
| 107 | 377 case RfbProto.EncodingZRLEE: |
| 54 | 378 dataLen = zLen + 20; |
| 156 | 379 // is.mark(dataLen); |
| 78 | 380 break; |
| 381 case RfbProto.EncodingXCursor: | |
| 382 case RfbProto.EncodingRichCursor: | |
| 383 int pixArray = rectW * rectH * 4; | |
| 384 int u8Array = (int)Math.floor((rectW + 7)/8) * rectH; | |
| 385 dataLen = pixArray + u8Array; | |
| 386 printFramebufferUpdate(); | |
| 130 | 387 // is.mark(dataLen); |
| 27 | 388 break; |
| 23 | 389 default: |
| 61 | 390 dataLen = 1000000; |
| 130 | 391 // is.mark(dataLen); |
| 54 | 392 } |
| 61 | 393 return dataLen; |
| 394 } | |
| 65 | 395 |
| 396 | |
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397 void sendDataToClient() throws Exception { |
| 61 | 398 regiFramebufferUpdate(); |
| 153 | 399 // printFramebufferUpdate(); |
| 61 | 400 int dataLen = checkAndMark(); |
| 401 readSendData(dataLen); | |
| 23 | 402 } |
| 54 | 403 |
| 404 BufferedImage createBufferedImage(Image img) { | |
| 405 BufferedImage bimg = new BufferedImage(img.getWidth(null), | |
| 406 img.getHeight(null), BufferedImage.TYPE_INT_RGB); | |
| 27 | 407 |
| 25 | 408 Graphics g = bimg.getGraphics(); |
| 409 g.drawImage(img, 0, 0, null); | |
| 410 g.dispose(); | |
| 411 return bimg; | |
| 412 } | |
| 413 | |
| 54 | 414 void createPngBytes(BufferedImage bimg) throws IOException { |
| 415 pngBytes = getImageBytes(bimg, "png"); | |
| 25 | 416 } |
| 54 | 417 |
| 418 byte[] getBytes(BufferedImage img) throws IOException { | |
| 25 | 419 byte[] b = getImageBytes(img, "png"); |
| 420 return b; | |
| 421 } | |
| 54 | 422 |
| 423 byte[] getImageBytes(BufferedImage image, String imageFormat) | |
| 424 throws IOException { | |
| 25 | 425 ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| 426 BufferedOutputStream os = new BufferedOutputStream(bos); | |
| 427 image.flush(); | |
| 428 ImageIO.write(image, imageFormat, os); | |
| 429 os.flush(); | |
| 430 os.close(); | |
| 431 return bos.toByteArray(); | |
| 432 } | |
| 433 | |
| 54 | 434 void sendPngData(Socket sock) throws IOException { |
| 26 | 435 byte[] dataLength = castIntByte(pngBytes.length); |
| 436 sock.getOutputStream().write(dataLength); | |
| 25 | 437 sock.getOutputStream().write(pngBytes); |
| 438 } | |
| 54 | 439 |
| 440 byte[] castIntByte(int len) { | |
| 26 | 441 byte[] b = new byte[4]; |
| 54 | 442 b[0] = (byte) ((len >>> 24) & 0xFF); |
| 443 b[1] = (byte) ((len >>> 16) & 0xFF); | |
| 444 b[2] = (byte) ((len >>> 8) & 0xFF); | |
| 445 b[3] = (byte) ((len >>> 0) & 0xFF); | |
| 26 | 446 return b; |
| 447 } | |
| 54 | 448 |
| 449 BufferedImage createBimg() throws IOException { | |
| 25 | 450 BufferedImage bimg = ImageIO.read(new ByteArrayInputStream(pngBytes)); |
| 451 return bimg; | |
| 452 } | |
| 104 | 453 |
| 54 | 454 void printFramebufferUpdate() { |
| 455 | |
| 18 | 456 System.out.println("messageType=" + messageType); |
| 54 | 457 System.out.println("rectangles=" + rectangles); |
| 18 | 458 System.out.println("encoding=" + encoding); |
| 78 | 459 System.out.println("rectX = "+rectX+": rectY = "+rectY); |
| 460 System.out.println("rectW = "+rectW+": rectH = "+rectH); | |
| 54 | 461 switch (encoding) { |
| 23 | 462 case RfbProto.EncodingRaw: |
| 54 | 463 System.out.println("rectW * rectH * 4 + 16 =" + rectW * rectH * 4 |
| 464 + 16); | |
| 23 | 465 break; |
| 466 default: | |
| 467 } | |
| 18 | 468 } |
| 130 | 469 int returnMsgtype() { |
| 470 return messageType; | |
| 471 } | |
| 472 | |
| 65 | 473 |
| 77 | 474 void readSpeedCheck() throws IOException { |
| 475 byte[] b = new byte[1]; | |
| 65 | 476 readFully(b); |
| 477 } | |
| 478 | |
| 77 | 479 void startSpeedCheck() { |
| 90 | 480 ByteBuffer b = ByteBuffer.allocate(10); |
| 481 b.put((byte)SpeedCheckMillis); | |
| 482 b.flip(); | |
| 66 | 483 startCheckTime = System.currentTimeMillis(); |
| 484 System.out.println("startChckTime = "+ startCheckTime); | |
| 90 | 485 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); |
| 84 | 486 bufs.add(b); |
| 487 multicastqueue.put(bufs); | |
| 65 | 488 } |
| 489 | |
| 77 | 490 void endSpeedCheck() { |
| 65 | 491 long accTime = System.currentTimeMillis(); |
| 492 long time = accTime - startCheckTime; | |
| 493 System.out.println("checkMillis: " + time); | |
| 494 } | |
| 495 | |
| 496 | |
| 497 synchronized void changeStatusFlag() { | |
| 498 printStatusFlag = true; | |
| 499 } | |
| 500 | |
| 501 void printMills() { | |
| 502 if(printStatusFlag) { | |
| 503 | |
| 504 changeStatusFlag(); | |
| 505 } else { | |
| 506 changeStatusFlag(); | |
| 507 } | |
| 508 } | |
| 87 | 509 |
| 510 void speedCheckMillis() { | |
| 511 Runnable stdin = new Runnable() { | |
| 512 public void run() { | |
| 513 int c; | |
| 514 try { | |
| 515 while( (c = System.in.read()) != -1 ) { | |
| 516 switch(c) { | |
| 517 case 's': | |
| 518 break; | |
| 519 default: | |
| 520 startSpeedCheck(); | |
| 521 break; | |
| 522 } | |
| 523 } | |
| 524 }catch(IOException e){ | |
| 525 System.out.println(e); | |
| 526 } | |
| 527 } | |
| 528 }; | |
| 529 | |
| 530 new Thread(stdin).start(); | |
| 531 } | |
| 162 | 532 |
| 533 void requestThreadStart() { | |
| 534 requestThread.start(); | |
| 535 } | |
| 536 | |
| 537 public synchronized void requestThreadNotify() { | |
| 538 rThread.reStart(); | |
| 539 } | |
| 540 | |
| 86 | 541 |
| 87 | 542 /** |
| 543 * gzip byte arrays | |
| 544 * @param deflater | |
| 545 * @param inputs | |
| 546 * byte data[] | |
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547 * @param inputIndex |
| 87 | 548 * @param outputs |
| 549 * byte data[] | |
| 550 * @return byte length in last byte array | |
| 551 * @throws IOException | |
| 552 */ | |
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553 public int zip(Deflater deflater,LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs) throws IOException { |
| 102 | 554 int len = 0; |
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555 ByteBuffer c1= ByteBuffer.allocate(INFLATE_BUFSIZE); |
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556 while(inputIndex < inputs.size() ) { |
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557 ByteBuffer b1 = inputs.get(inputIndex++); |
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558 deflater.setInput(b1.array(),b1.position(),b1.remaining()); |
| 106 | 559 /** |
| 560 * If we finish() stream and reset() it, Deflater start new gzip stream, this makes continuous zlib reader unhappy. | |
| 561 * if we remove finish(), Deflater.deflate() never flushes its output. The original zlib deflate has flush flag. I'm pretty | |
| 562 * sure this a kind of bug of Java library. | |
| 563 */ | |
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564 if (inputIndex==inputs.size()) |
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565 deflater.finish(); |
| 106 | 566 int len1 = 0; |
| 86 | 567 do { |
| 106 | 568 len1 = deflater.deflate(c1.array(),c1.position(),c1.remaining()); |
| 102 | 569 if (len1>0) { |
| 570 len += len1; | |
| 571 c1.position(c1.position()+len1); | |
| 572 if (c1.remaining()==0) { | |
| 573 c1.flip(); outputs.addLast(c1); | |
| 574 c1 = ByteBuffer.allocate(INFLATE_BUFSIZE); | |
| 575 } | |
| 86 | 576 } |
| 106 | 577 } while (len1 >0 || !deflater.needsInput()); // &&!deflater.finished()); |
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578 } |
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579 if (c1.position()!=0) { |
| 102 | 580 c1.flip(); outputs.addLast(c1); |
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581 } |
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582 deflater.reset(); |
| 90 | 583 return len; |
| 86 | 584 } |
| 87 | 585 |
| 586 /** | |
| 587 * gunzip byte arrays | |
| 588 * @param inflater | |
| 589 * @param inputs | |
| 590 * byte data[] | |
| 591 * @param outputs | |
| 592 * byte data[] | |
| 91 | 593 *@return number of total bytes |
| 87 | 594 * @throws IOException |
| 595 */ | |
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596 public int unzip(Inflater inflater, LinkedList<ByteBuffer> inputs, int inputIndex, LinkedList<ByteBuffer> outputs,int bufSize) |
| 88 | 597 throws DataFormatException { |
| 102 | 598 int len=0; |
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599 ByteBuffer buf = ByteBuffer.allocate(bufSize); |
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600 while (inputIndex < inputs.size()) { |
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601 ByteBuffer input = inputs.get(inputIndex++); |
| 102 | 602 inflater.setInput(input.array(),input.position(),input.limit()); |
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603 // if (inputIndex==inputs.size()) if inflater/deflater has symmetry, we need this |
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604 // inflater.end(); but this won't work |
| 88 | 605 do { |
| 102 | 606 int len0 = inflater.inflate(buf.array(),buf.position(),buf.remaining()); |
| 607 if (len0>0) { | |
| 608 buf.position(buf.position()+len0); | |
| 609 len += len0; | |
| 610 if (buf.remaining()==0) { | |
| 611 buf.flip(); | |
| 612 outputs.addLast(buf); | |
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613 buf = ByteBuffer.allocate(bufSize); |
| 102 | 614 } |
| 91 | 615 } |
| 102 | 616 } while (!inflater.needsInput()); |
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617 } |
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618 if (buf.position()!=0) { |
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619 buf.flip(); |
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620 outputs.addLast(buf); |
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621 } |
| 90 | 622 return len; |
| 86 | 623 } |
| 156 | 624 |
| 65 | 625 |
| 156 | 626 float maxMag = 1; |
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627 /** |
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628 * send data to clients |
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629 * @param dataLen |
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630 * @throws IOException |
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631 * @throws DataFormatException |
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632 * |
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633 * Zlibed packet is compressed in context dependent way, that is, it have to send from the beginning. But this is |
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634 * impossible. So we have to compress it again for each clients. Separate deflater for each clients is necessary. |
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635 * |
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636 * Java's deflater does not support flush. This means to get the result, we have to finish the compression. Reseting |
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637 * start new compression, but it is not accepted well in zlib continuous reading. So we need new Encoding ZRLEE |
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638 * 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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639 * ZRLEE compression is not context dependent, so no recompression is necessary. |
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640 */ |
| 86 | 641 void readSendData(int dataLen) throws IOException, DataFormatException { |
| 90 | 642 LinkedList<ByteBuffer>bufs = new LinkedList<ByteBuffer>(); |
| 643 ByteBuffer header = ByteBuffer.allocate(16); | |
| 644 readFully(header.array(),0,16); | |
| 645 header.limit(16); | |
| 646 if (header.get(0)==RfbProto.FramebufferUpdate) { | |
| 647 int encoding = header.getInt(12); | |
| 107 | 648 if (encoding==RfbProto.EncodingZRLE||encoding==RfbProto.EncodingZlib) { // ZRLEE is already recompressed |
| 90 | 649 ByteBuffer len = ByteBuffer.allocate(4); |
| 650 readFully(len.array(),0,4); len.limit(4); | |
| 651 ByteBuffer inputData = ByteBuffer.allocate(dataLen-20); | |
| 151 | 652 |
| 653 startTiming(); | |
| 90 | 654 readFully(inputData.array(),0,inputData.capacity()); inputData.limit(dataLen-20); |
| 151 | 655 stopTiming(); |
| 656 | |
| 90 | 657 LinkedList<ByteBuffer>inputs = new LinkedList<ByteBuffer>(); |
| 88 | 658 inputs.add(inputData); |
| 107 | 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 | |
| 87 | 670 bufs.addFirst(header); |
| 86 | 671 multicastqueue.put(bufs); |
| 156 | 672 // is.reset(); |
| 130 | 673 |
| 156 | 674 /* |
| 675 System.out.println("ZRLE = "+dataLen); | |
| 676 System.out.println("ZRLEE = "+(len2+20)); | |
| 677 float mag = (float)dataLen / (float)(len2 + 20); | |
| 678 System.out.println("ZRLE / ZRLEE = "+ mag); | |
| 679 if(mag > maxMag) maxMag = mag; | |
| 680 System.out.println("maxMag = "+maxMag); | |
| 681 */ | |
| 86 | 682 return ; |
| 683 } | |
| 87 | 684 bufs.add(header); |
| 685 if (dataLen>16) { | |
| 90 | 686 ByteBuffer b = ByteBuffer.allocate(dataLen-16); |
| 156 | 687 startTiming(); |
| 90 | 688 readFully(b.array(),0,dataLen-16); b.limit(dataLen-16); |
| 156 | 689 stopTiming(); |
| 87 | 690 bufs.add(b); |
| 691 } | |
| 86 | 692 multicastqueue.put(bufs); |
| 135 | 693 // is.reset(); |
| 694 return ; | |
| 130 | 695 } |
| 696 is.reset(); | |
| 86 | 697 |
| 698 // It may be compressed. We can inflate here to avoid repeating clients decompressing here, | |
| 699 // but it may generate too many large data. It is better to do it in each client. | |
| 700 // But we have do inflation for all input data, so we have to do it here. | |
| 701 } | |
| 43 | 702 |
| 71 | 703 void newClient(AcceptThread acceptThread, final Socket newCli, |
| 54 | 704 final OutputStream os, final InputStream is) throws IOException { |
| 705 // createBimgFlag = true; | |
| 706 // rfb.addSockTmp(newCli); | |
| 707 // addSock(newCli); | |
| 112 | 708 final int myId = clients; |
| 90 | 709 final Client <LinkedList<ByteBuffer>> c = multicastqueue.newClient(); |
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710 final AtomicInteger writerRunning = new AtomicInteger(); |
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711 writerRunning.set(1); |
| 112 | 712 /** |
| 713 * Timeout thread. If a client is suspended, it has top of queue indefinitely, which caused memory | |
| 714 * overflow. After the timeout, we poll the queue and discard it. Start long wait if writer is running. | |
| 715 */ | |
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716 final Runnable timer = new Runnable() { |
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717 public void run() { |
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718 int count = 0; |
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719 for(;;) { |
| 114 | 720 long timeout = 30000/8; |
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721 try { |
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722 synchronized(this) { |
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723 int state,flag; |
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724 writerRunning.set(0); |
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725 wait(timeout); |
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726 flag = 0; |
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727 while((state=writerRunning.get())==0) { |
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728 c.poll(); // discard, should be timeout |
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729 count++; |
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730 if (flag==0) { |
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731 System.out.println("Discarding "+myId + " count="+ count); flag = 1; |
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732 } |
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733 wait(10); // if this is too short, writer cannot take the poll, if this is too long, memory will overflow... |
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734 } |
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735 if (flag==1) System.out.println("Resuming "+myId + " count="+count); |
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736 if (state!=1) { |
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737 System.out.println("Client died "+myId); |
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738 break; |
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739 } |
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740 } |
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741 } catch (InterruptedException e) { |
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742 } |
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743 } |
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744 } |
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745 }; |
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746 new Thread(timer).start(); |
| 112 | 747 /** |
| 748 * discard all incoming from clients | |
| 749 */ | |
| 102 | 750 final Runnable reader = new Runnable() { |
| 751 public void run() { | |
| 752 byte b[] = new byte[4096]; | |
| 753 for(;;) { | |
| 754 try { | |
| 755 int c = is.read(b); | |
| 756 if (c<=0) throw new IOException(); | |
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757 // System.out.println("client read "+c); |
| 102 | 758 } catch (IOException e) { |
| 759 try { | |
|
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760 writerRunning.set(2); |
| 102 | 761 os.close(); |
| 762 is.close(); | |
| 763 } catch (IOException e1) { | |
| 764 } | |
| 765 return; | |
| 766 } | |
| 767 } | |
| 768 } | |
| 769 }; | |
| 112 | 770 /** |
| 771 * send packets to a client | |
| 772 */ | |
| 54 | 773 Runnable sender = new Runnable() { |
| 774 public void run() { | |
|
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775 writerRunning.set(1); |
| 54 | 776 try { |
| 65 | 777 /** |
| 778 * initial connection of RFB protocol | |
| 779 */ | |
| 54 | 780 sendRfbVersion(os); |
| 131 | 781 // readVersionMsg(is); |
| 155 | 782 int rfbMinor = readVersionMsg(is,os); |
| 54 | 783 sendSecurityType(os); |
| 784 readSecType(is); | |
| 785 sendSecResult(os); | |
| 786 readClientInit(is); | |
| 787 sendInitData(os); | |
| 112 | 788 new Thread(reader).start(); // discard incoming packet here after. |
| 162 | 789 // writeFramebufferUpdateRequest(0,0, framebufferWidth, framebufferHeight, false ); |
| 790 requestThreadNotify(); | |
| 54 | 791 for (;;) { |
| 90 | 792 LinkedList<ByteBuffer> bufs = c.poll(); |
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793 int inputIndex = 0; |
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794 ByteBuffer header = bufs.get(inputIndex); |
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795 if (header==null) continue; |
| 90 | 796 if (header.get(0)==RfbProto.FramebufferUpdate) { |
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797 // System.out.println("client "+ myId); |
| 87 | 798 } |
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799 writeToClient(os, bufs, inputIndex); |
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800 writerRunning.set(1); // yes my client is awaking. |
| 54 | 801 } |
| 802 } catch (IOException e) { | |
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803 try { |
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804 writerRunning.set(2); |
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805 os.close(); |
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806 } catch (IOException e1) { |
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807 } |
| 87 | 808 /* if socket closed cliList.remove(newCli); */ |
| 54 | 809 } |
| 810 } | |
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811 |
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812 public void writeToClient(final OutputStream os, |
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813 LinkedList<ByteBuffer> bufs, int inputIndex) |
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814 throws IOException { |
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815 while(inputIndex < bufs.size()) { |
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816 ByteBuffer b = bufs.get(inputIndex++); |
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817 os.write(b.array(), b.position(), b.limit()); |
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818 } |
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819 os.flush(); |
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820 } |
| 54 | 821 }; |
| 80 | 822 clients++; |
| 54 | 823 new Thread(sender).start(); |
| 824 | |
| 825 } | |
| 66 | 826 |
| 827 | |
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828 public void dump32(LinkedList<ByteBuffer>bufs) { |
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829 int len =0; |
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830 for(ByteBuffer b: bufs) len += b.remaining(); |
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831 ByteBuffer top = bufs.getFirst(); |
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832 ByteBuffer end = bufs.getLast(); |
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833 System.err.println("length: "+len); |
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834 System.err.print("head 0: "); |
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835 for(int i = 0; i<16 && i < top.remaining(); i++) { |
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836 System.err.print(" "+ top.get(i)); |
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837 } |
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838 System.err.print("tail 0: "); |
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839 for(int i = 0; i<16 && i < end.remaining(); i++) { |
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840 System.err.print(" "+end.get(i)); |
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841 } |
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842 System.err.println(); |
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843 } |
| 88 | 844 |
| 845 @Test | |
| 846 public void test1() { | |
| 847 try { | |
| 90 | 848 LinkedList<ByteBuffer> in = new LinkedList<ByteBuffer>(); |
| 849 LinkedList<ByteBuffer> out = new LinkedList<ByteBuffer>(); | |
| 850 LinkedList<ByteBuffer> out2 = new LinkedList<ByteBuffer>(); | |
| 107 | 851 // if (false) { |
| 852 // for(int i=0;i<10;i++) { | |
| 853 // in.add(ByteBuffer.wrap("test1".getBytes())); | |
| 854 // in.add(ByteBuffer.wrap("test2".getBytes())); | |
| 855 // in.add(ByteBuffer.wrap("test3".getBytes())); | |
| 856 // in.add(ByteBuffer.wrap("test44".getBytes())); | |
| 857 // } | |
| 858 // } else | |
| 859 { | |
| 106 | 860 String t = ""; |
| 861 for(int i=0;i<10;i++) { | |
| 862 t += "test1"; | |
| 863 t += "test2"; | |
| 864 t += "test3"; | |
| 865 t += "test44"; | |
| 866 } | |
| 867 in.add(ByteBuffer.wrap(t.getBytes())); | |
| 868 } | |
| 869 | |
| 92 | 870 LinkedList<ByteBuffer> in1 = clone(in); |
| 90 | 871 |
| 88 | 872 Deflater deflater = new Deflater(); |
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873 zip(deflater,in,0,out); |
| 92 | 874 // LinkedList<ByteBuffer> out3 = clone(out); zipped result is depend on deflator's state |
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875 unzip(inflater, out, 0,out2, INFLATE_BUFSIZE); |
| 106 | 876 // inflater.reset(); |
| 92 | 877 equalByteBuffers(in1, out2); |
| 878 LinkedList<ByteBuffer> out4 = new LinkedList<ByteBuffer>(); | |
| 104 | 879 deflater = new Deflater(); |
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880 zip(deflater,out2,0,out4); |
| 92 | 881 LinkedList<ByteBuffer> out5 = new LinkedList<ByteBuffer>(); |
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882 unzip(inflater,out4,0, out5, INFLATE_BUFSIZE); |
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883 int len = equalByteBuffers(in1,out5); |
| 92 | 884 |
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885 System.out.println("Test Ok. "+len); |
| 88 | 886 } catch (Exception e) { |
| 887 assertEquals(0,1); | |
| 888 } | |
| 889 } | |
| 890 | |
| 92 | 891 private LinkedList<ByteBuffer> clone(LinkedList<ByteBuffer> in) { |
| 892 LinkedList<ByteBuffer> copy = new LinkedList<ByteBuffer>(); | |
| 893 for(ByteBuffer b: in) { | |
| 894 ByteBuffer c = b.duplicate(); | |
| 895 copy.add(c); | |
| 896 } | |
| 897 return copy; | |
| 898 } | |
| 899 | |
| 93 | 900 |
| 901 | |
|
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902 public int equalByteBuffers(LinkedList<ByteBuffer> in, |
| 92 | 903 LinkedList<ByteBuffer> out2) { |
|
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904 int len = 0; |
| 93 | 905 Iterable<Byte> i = byteBufferIterator(in); |
| 906 Iterator<Byte> o = byteBufferIterator(out2).iterator(); | |
| 907 | |
| 908 for(int b: i) { | |
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909 len ++; |
| 93 | 910 if (o.hasNext()) { |
| 911 int c = o.next(); | |
| 912 assertEquals(b,c); | |
| 913 } else | |
| 914 assertEquals(0,1); | |
| 915 } | |
| 104 | 916 if (o.hasNext()) |
| 917 assertEquals(0,1); | |
| 93 | 918 // System.out.println(); |
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919 return len; |
| 93 | 920 } |
| 921 | |
| 922 private Iterable<Byte> byteBufferIterator(final LinkedList<ByteBuffer> in) { | |
| 923 return new Iterable<Byte>() { | |
| 924 public Iterator<Byte> iterator() { | |
| 925 return new Iterator<Byte>() { | |
| 926 int bytes = 0; | |
| 927 int buffers = 0; | |
| 928 public boolean hasNext() { | |
| 104 | 929 for(;;) { |
| 930 if (buffers>=in.size()) return false; | |
| 931 ByteBuffer b = in.get(buffers); | |
| 932 if (! (bytes<b.remaining())) { | |
| 933 buffers ++; bytes=0; | |
| 934 } else return true; | |
| 935 } | |
| 92 | 936 } |
| 93 | 937 public Byte next() { |
| 104 | 938 ByteBuffer bf =in.get(buffers); |
| 93 | 939 byte b = bf.get(bytes++); |
| 940 if (bf.remaining()<=bytes) { | |
| 941 buffers++; | |
| 942 bytes = 0; | |
| 943 } | |
| 944 // System.out.print(b); | |
| 945 return b; | |
| 946 } | |
| 947 public void remove() { | |
| 948 } | |
| 949 }; | |
| 92 | 950 } |
| 93 | 951 }; |
| 92 | 952 } |
| 953 | |
| 54 | 954 } |
| 66 | 955 |
| 956 |