Jake Slack | 03928ae | 2014-05-13 18:41:56 -0700 | [diff] [blame] | 1 | // |
| 2 | // ======================================================================== |
| 3 | // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| 4 | // ------------------------------------------------------------------------ |
| 5 | // All rights reserved. This program and the accompanying materials |
| 6 | // are made available under the terms of the Eclipse Public License v1.0 |
| 7 | // and Apache License v2.0 which accompanies this distribution. |
| 8 | // |
| 9 | // The Eclipse Public License is available at |
| 10 | // http://www.eclipse.org/legal/epl-v10.html |
| 11 | // |
| 12 | // The Apache License v2.0 is available at |
| 13 | // http://www.opensource.org/licenses/apache2.0.php |
| 14 | // |
| 15 | // You may elect to redistribute this code under either of these licenses. |
| 16 | // ======================================================================== |
| 17 | // |
| 18 | |
| 19 | package org.eclipse.jetty.http; |
| 20 | |
| 21 | import java.io.IOException; |
| 22 | import java.io.InterruptedIOException; |
| 23 | |
| 24 | import org.eclipse.jetty.io.Buffer; |
| 25 | import org.eclipse.jetty.io.BufferCache.CachedBuffer; |
| 26 | import org.eclipse.jetty.io.BufferUtil; |
| 27 | import org.eclipse.jetty.io.Buffers; |
| 28 | import org.eclipse.jetty.io.ByteArrayBuffer; |
| 29 | import org.eclipse.jetty.io.EndPoint; |
| 30 | import org.eclipse.jetty.io.EofException; |
| 31 | import org.eclipse.jetty.util.StringUtil; |
| 32 | import org.eclipse.jetty.util.log.Log; |
| 33 | import org.eclipse.jetty.util.log.Logger; |
| 34 | |
| 35 | /* ------------------------------------------------------------ */ |
| 36 | /** |
| 37 | * HttpGenerator. Builds HTTP Messages. |
| 38 | * |
| 39 | * |
| 40 | * |
| 41 | */ |
| 42 | public class HttpGenerator extends AbstractGenerator |
| 43 | { |
| 44 | private static final Logger LOG = Log.getLogger(HttpGenerator.class); |
| 45 | |
| 46 | // Build cache of response lines for status |
| 47 | private static class Status |
| 48 | { |
| 49 | Buffer _reason; |
| 50 | Buffer _schemeCode; |
| 51 | Buffer _responseLine; |
| 52 | } |
| 53 | private static final Status[] __status = new Status[HttpStatus.MAX_CODE+1]; |
| 54 | static |
| 55 | { |
| 56 | int versionLength=HttpVersions.HTTP_1_1_BUFFER.length(); |
| 57 | |
| 58 | for (int i=0;i<__status.length;i++) |
| 59 | { |
| 60 | HttpStatus.Code code = HttpStatus.getCode(i); |
| 61 | if (code==null) |
| 62 | continue; |
| 63 | String reason=code.getMessage(); |
| 64 | byte[] bytes=new byte[versionLength+5+reason.length()+2]; |
| 65 | HttpVersions.HTTP_1_1_BUFFER.peek(0,bytes, 0, versionLength); |
| 66 | bytes[versionLength+0]=' '; |
| 67 | bytes[versionLength+1]=(byte)('0'+i/100); |
| 68 | bytes[versionLength+2]=(byte)('0'+(i%100)/10); |
| 69 | bytes[versionLength+3]=(byte)('0'+(i%10)); |
| 70 | bytes[versionLength+4]=' '; |
| 71 | for (int j=0;j<reason.length();j++) |
| 72 | bytes[versionLength+5+j]=(byte)reason.charAt(j); |
| 73 | bytes[versionLength+5+reason.length()]=HttpTokens.CARRIAGE_RETURN; |
| 74 | bytes[versionLength+6+reason.length()]=HttpTokens.LINE_FEED; |
| 75 | |
| 76 | __status[i] = new Status(); |
| 77 | __status[i]._reason=new ByteArrayBuffer(bytes,versionLength+5,bytes.length-versionLength-7,Buffer.IMMUTABLE); |
| 78 | __status[i]._schemeCode=new ByteArrayBuffer(bytes,0,versionLength+5,Buffer.IMMUTABLE); |
| 79 | __status[i]._responseLine=new ByteArrayBuffer(bytes,0,bytes.length,Buffer.IMMUTABLE); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | /* ------------------------------------------------------------------------------- */ |
| 84 | public static Buffer getReasonBuffer(int code) |
| 85 | { |
| 86 | Status status = code<__status.length?__status[code]:null; |
| 87 | if (status!=null) |
| 88 | return status._reason; |
| 89 | return null; |
| 90 | } |
| 91 | |
| 92 | |
| 93 | // common _content |
| 94 | private static final byte[] LAST_CHUNK = |
| 95 | { (byte) '0', (byte) '\015', (byte) '\012', (byte) '\015', (byte) '\012'}; |
| 96 | private static final byte[] CONTENT_LENGTH_0 = StringUtil.getBytes("Content-Length: 0\015\012"); |
| 97 | private static final byte[] CONNECTION_KEEP_ALIVE = StringUtil.getBytes("Connection: keep-alive\015\012"); |
| 98 | private static final byte[] CONNECTION_CLOSE = StringUtil.getBytes("Connection: close\015\012"); |
| 99 | private static final byte[] CONNECTION_ = StringUtil.getBytes("Connection: "); |
| 100 | private static final byte[] CRLF = StringUtil.getBytes("\015\012"); |
| 101 | private static final byte[] TRANSFER_ENCODING_CHUNKED = StringUtil.getBytes("Transfer-Encoding: chunked\015\012"); |
| 102 | private static byte[] SERVER = StringUtil.getBytes("Server: Jetty(7.0.x)\015\012"); |
| 103 | |
| 104 | // other statics |
| 105 | private static final int CHUNK_SPACE = 12; |
| 106 | |
| 107 | public static void setServerVersion(String version) |
| 108 | { |
| 109 | SERVER=StringUtil.getBytes("Server: Jetty("+version+")\015\012"); |
| 110 | } |
| 111 | |
| 112 | // data |
| 113 | protected boolean _bypass = false; // True if _content buffer can be written directly to endp and bypass the content buffer |
| 114 | private boolean _needCRLF = false; |
| 115 | private boolean _needEOC = false; |
| 116 | private boolean _bufferChunked = false; |
| 117 | |
| 118 | |
| 119 | /* ------------------------------------------------------------------------------- */ |
| 120 | /** |
| 121 | * Constructor. |
| 122 | * |
| 123 | * @param buffers buffer pool |
| 124 | * @param io the end point to use |
| 125 | */ |
| 126 | public HttpGenerator(Buffers buffers, EndPoint io) |
| 127 | { |
| 128 | super(buffers,io); |
| 129 | } |
| 130 | |
| 131 | /* ------------------------------------------------------------------------------- */ |
| 132 | @Override |
| 133 | public void reset() |
| 134 | { |
| 135 | if (_persistent!=null && !_persistent && _endp!=null && !_endp.isOutputShutdown()) |
| 136 | { |
| 137 | try |
| 138 | { |
| 139 | _endp.shutdownOutput(); |
| 140 | } |
| 141 | catch(IOException e) |
| 142 | { |
| 143 | LOG.ignore(e); |
| 144 | } |
| 145 | } |
| 146 | super.reset(); |
| 147 | if (_buffer!=null) |
| 148 | _buffer.clear(); |
| 149 | if (_header!=null) |
| 150 | _header.clear(); |
| 151 | if (_content!=null) |
| 152 | _content=null; |
| 153 | _bypass = false; |
| 154 | _needCRLF = false; |
| 155 | _needEOC = false; |
| 156 | _bufferChunked=false; |
| 157 | _method=null; |
| 158 | _uri=null; |
| 159 | _noContent=false; |
| 160 | } |
| 161 | |
| 162 | /* ------------------------------------------------------------ */ |
| 163 | /** |
| 164 | * Add content. |
| 165 | * |
| 166 | * @param content |
| 167 | * @param last |
| 168 | * @throws IllegalArgumentException if <code>content</code> is {@link Buffer#isImmutable immutable}. |
| 169 | * @throws IllegalStateException If the request is not expecting any more content, |
| 170 | * or if the buffers are full and cannot be flushed. |
| 171 | * @throws IOException if there is a problem flushing the buffers. |
| 172 | */ |
| 173 | public void addContent(Buffer content, boolean last) throws IOException |
| 174 | { |
| 175 | if (_noContent) |
| 176 | throw new IllegalStateException("NO CONTENT"); |
| 177 | |
| 178 | if (_last || _state==STATE_END) |
| 179 | { |
| 180 | LOG.warn("Ignoring extra content {}",content); |
| 181 | content.clear(); |
| 182 | return; |
| 183 | } |
| 184 | _last = last; |
| 185 | |
| 186 | // Handle any unfinished business? |
| 187 | if (_content!=null && _content.length()>0 || _bufferChunked) |
| 188 | { |
| 189 | if (_endp.isOutputShutdown()) |
| 190 | throw new EofException(); |
| 191 | flushBuffer(); |
| 192 | if (_content != null && _content.length()>0) |
| 193 | { |
| 194 | if (_bufferChunked) |
| 195 | { |
| 196 | Buffer nc=_buffers.getBuffer(_content.length()+CHUNK_SPACE+content.length()); |
| 197 | nc.put(_content); |
| 198 | nc.put(HttpTokens.CRLF); |
| 199 | BufferUtil.putHexInt(nc, content.length()); |
| 200 | nc.put(HttpTokens.CRLF); |
| 201 | nc.put(content); |
| 202 | content=nc; |
| 203 | } |
| 204 | else |
| 205 | { |
| 206 | Buffer nc=_buffers.getBuffer(_content.length()+content.length()); |
| 207 | nc.put(_content); |
| 208 | nc.put(content); |
| 209 | content=nc; |
| 210 | } |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | _content = content; |
| 215 | _contentWritten += content.length(); |
| 216 | |
| 217 | // Handle the _content |
| 218 | if (_head) |
| 219 | { |
| 220 | content.clear(); |
| 221 | _content=null; |
| 222 | } |
| 223 | else if (_endp != null && (_buffer==null || _buffer.length()==0) && _content.length() > 0 && (_last || isCommitted() && _content.length()>1024)) |
| 224 | { |
| 225 | _bypass = true; |
| 226 | } |
| 227 | else if (!_bufferChunked) |
| 228 | { |
| 229 | // Yes - so we better check we have a buffer |
| 230 | if (_buffer == null) |
| 231 | _buffer = _buffers.getBuffer(); |
| 232 | |
| 233 | // Copy _content to buffer; |
| 234 | int len=_buffer.put(_content); |
| 235 | _content.skip(len); |
| 236 | if (_content.length() == 0) |
| 237 | _content = null; |
| 238 | } |
| 239 | } |
| 240 | |
| 241 | /* ------------------------------------------------------------ */ |
| 242 | /** |
| 243 | * send complete response. |
| 244 | * |
| 245 | * @param response |
| 246 | */ |
| 247 | public void sendResponse(Buffer response) throws IOException |
| 248 | { |
| 249 | if (_noContent || _state!=STATE_HEADER || _content!=null && _content.length()>0 || _bufferChunked || _head ) |
| 250 | throw new IllegalStateException(); |
| 251 | |
| 252 | _last = true; |
| 253 | |
| 254 | _content = response; |
| 255 | _bypass = true; |
| 256 | _state = STATE_FLUSHING; |
| 257 | |
| 258 | // TODO this is not exactly right, but should do. |
| 259 | _contentLength =_contentWritten = response.length(); |
| 260 | |
| 261 | } |
| 262 | |
| 263 | /* ------------------------------------------------------------ */ |
| 264 | /** Prepare buffer for unchecked writes. |
| 265 | * Prepare the generator buffer to receive unchecked writes |
| 266 | * @return the available space in the buffer. |
| 267 | * @throws IOException |
| 268 | */ |
| 269 | @Override |
| 270 | public int prepareUncheckedAddContent() throws IOException |
| 271 | { |
| 272 | if (_noContent) |
| 273 | return -1; |
| 274 | |
| 275 | if (_last || _state==STATE_END) |
| 276 | return -1; |
| 277 | |
| 278 | // Handle any unfinished business? |
| 279 | Buffer content = _content; |
| 280 | if (content != null && content.length()>0 || _bufferChunked) |
| 281 | { |
| 282 | flushBuffer(); |
| 283 | if (content != null && content.length()>0 || _bufferChunked) |
| 284 | throw new IllegalStateException("FULL"); |
| 285 | } |
| 286 | |
| 287 | // we better check we have a buffer |
| 288 | if (_buffer == null) |
| 289 | _buffer = _buffers.getBuffer(); |
| 290 | |
| 291 | _contentWritten-=_buffer.length(); |
| 292 | |
| 293 | // Handle the _content |
| 294 | if (_head) |
| 295 | return Integer.MAX_VALUE; |
| 296 | |
| 297 | return _buffer.space()-(_contentLength == HttpTokens.CHUNKED_CONTENT?CHUNK_SPACE:0); |
| 298 | } |
| 299 | |
| 300 | /* ------------------------------------------------------------ */ |
| 301 | @Override |
| 302 | public boolean isBufferFull() |
| 303 | { |
| 304 | // Should we flush the buffers? |
| 305 | return super.isBufferFull() || _bufferChunked || _bypass || (_contentLength == HttpTokens.CHUNKED_CONTENT && _buffer != null && _buffer.space() < CHUNK_SPACE); |
| 306 | } |
| 307 | |
| 308 | /* ------------------------------------------------------------ */ |
| 309 | public void send1xx(int code) throws IOException |
| 310 | { |
| 311 | if (_state != STATE_HEADER) |
| 312 | return; |
| 313 | |
| 314 | if (code<100||code>199) |
| 315 | throw new IllegalArgumentException("!1xx"); |
| 316 | Status status=__status[code]; |
| 317 | if (status==null) |
| 318 | throw new IllegalArgumentException(code+"?"); |
| 319 | |
| 320 | // get a header buffer |
| 321 | if (_header == null) |
| 322 | _header = _buffers.getHeader(); |
| 323 | |
| 324 | _header.put(status._responseLine); |
| 325 | _header.put(HttpTokens.CRLF); |
| 326 | |
| 327 | try |
| 328 | { |
| 329 | // nasty semi busy flush! |
| 330 | while(_header.length()>0) |
| 331 | { |
| 332 | int len = _endp.flush(_header); |
| 333 | if (len<0) |
| 334 | throw new EofException(); |
| 335 | if (len==0) |
| 336 | Thread.sleep(100); |
| 337 | } |
| 338 | } |
| 339 | catch(InterruptedException e) |
| 340 | { |
| 341 | LOG.debug(e); |
| 342 | throw new InterruptedIOException(e.toString()); |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | /* ------------------------------------------------------------ */ |
| 347 | @Override |
| 348 | public boolean isRequest() |
| 349 | { |
| 350 | return _method!=null; |
| 351 | } |
| 352 | |
| 353 | /* ------------------------------------------------------------ */ |
| 354 | @Override |
| 355 | public boolean isResponse() |
| 356 | { |
| 357 | return _method==null; |
| 358 | } |
| 359 | |
| 360 | /* ------------------------------------------------------------ */ |
| 361 | @Override |
| 362 | public void completeHeader(HttpFields fields, boolean allContentAdded) throws IOException |
| 363 | { |
| 364 | if (_state != STATE_HEADER) |
| 365 | return; |
| 366 | |
| 367 | // handle a reset |
| 368 | if (isResponse() && _status==0) |
| 369 | throw new EofException(); |
| 370 | |
| 371 | if (_last && !allContentAdded) |
| 372 | throw new IllegalStateException("last?"); |
| 373 | _last = _last | allContentAdded; |
| 374 | |
| 375 | // get a header buffer |
| 376 | if (_header == null) |
| 377 | _header = _buffers.getHeader(); |
| 378 | |
| 379 | boolean has_server = false; |
| 380 | |
| 381 | try |
| 382 | { |
| 383 | if (isRequest()) |
| 384 | { |
| 385 | _persistent=true; |
| 386 | |
| 387 | if (_version == HttpVersions.HTTP_0_9_ORDINAL) |
| 388 | { |
| 389 | _contentLength = HttpTokens.NO_CONTENT; |
| 390 | _header.put(_method); |
| 391 | _header.put((byte)' '); |
| 392 | _header.put(_uri.getBytes("UTF-8")); // TODO check |
| 393 | _header.put(HttpTokens.CRLF); |
| 394 | _state = STATE_FLUSHING; |
| 395 | _noContent=true; |
| 396 | return; |
| 397 | } |
| 398 | else |
| 399 | { |
| 400 | _header.put(_method); |
| 401 | _header.put((byte)' '); |
| 402 | _header.put(_uri.getBytes("UTF-8")); // TODO check |
| 403 | _header.put((byte)' '); |
| 404 | _header.put(_version==HttpVersions.HTTP_1_0_ORDINAL?HttpVersions.HTTP_1_0_BUFFER:HttpVersions.HTTP_1_1_BUFFER); |
| 405 | _header.put(HttpTokens.CRLF); |
| 406 | } |
| 407 | } |
| 408 | else |
| 409 | { |
| 410 | // Responses |
| 411 | if (_version == HttpVersions.HTTP_0_9_ORDINAL) |
| 412 | { |
| 413 | _persistent = false; |
| 414 | _contentLength = HttpTokens.EOF_CONTENT; |
| 415 | _state = STATE_CONTENT; |
| 416 | return; |
| 417 | } |
| 418 | else |
| 419 | { |
| 420 | if (_persistent==null) |
| 421 | _persistent= (_version > HttpVersions.HTTP_1_0_ORDINAL); |
| 422 | |
| 423 | // add response line |
| 424 | Status status = _status<__status.length?__status[_status]:null; |
| 425 | |
| 426 | if (status==null) |
| 427 | { |
| 428 | _header.put(HttpVersions.HTTP_1_1_BUFFER); |
| 429 | _header.put((byte) ' '); |
| 430 | _header.put((byte) ('0' + _status / 100)); |
| 431 | _header.put((byte) ('0' + (_status % 100) / 10)); |
| 432 | _header.put((byte) ('0' + (_status % 10))); |
| 433 | _header.put((byte) ' '); |
| 434 | if (_reason==null) |
| 435 | { |
| 436 | _header.put((byte) ('0' + _status / 100)); |
| 437 | _header.put((byte) ('0' + (_status % 100) / 10)); |
| 438 | _header.put((byte) ('0' + (_status % 10))); |
| 439 | } |
| 440 | else |
| 441 | _header.put(_reason); |
| 442 | _header.put(HttpTokens.CRLF); |
| 443 | } |
| 444 | else |
| 445 | { |
| 446 | if (_reason==null) |
| 447 | _header.put(status._responseLine); |
| 448 | else |
| 449 | { |
| 450 | _header.put(status._schemeCode); |
| 451 | _header.put(_reason); |
| 452 | _header.put(HttpTokens.CRLF); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | if (_status<200 && _status>=100 ) |
| 457 | { |
| 458 | _noContent=true; |
| 459 | _content=null; |
| 460 | if (_buffer!=null) |
| 461 | _buffer.clear(); |
| 462 | // end the header. |
| 463 | |
| 464 | if (_status!=101 ) |
| 465 | { |
| 466 | _header.put(HttpTokens.CRLF); |
| 467 | _state = STATE_CONTENT; |
| 468 | return; |
| 469 | } |
| 470 | } |
| 471 | else if (_status==204 || _status==304) |
| 472 | { |
| 473 | _noContent=true; |
| 474 | _content=null; |
| 475 | if (_buffer!=null) |
| 476 | _buffer.clear(); |
| 477 | } |
| 478 | } |
| 479 | } |
| 480 | |
| 481 | // Add headers |
| 482 | if (_status>=200 && _date!=null) |
| 483 | { |
| 484 | _header.put(HttpHeaders.DATE_BUFFER); |
| 485 | _header.put((byte)':'); |
| 486 | _header.put((byte)' '); |
| 487 | _header.put(_date); |
| 488 | _header.put(CRLF); |
| 489 | } |
| 490 | |
| 491 | // key field values |
| 492 | HttpFields.Field content_length = null; |
| 493 | HttpFields.Field transfer_encoding = null; |
| 494 | boolean keep_alive = false; |
| 495 | boolean close=false; |
| 496 | boolean content_type=false; |
| 497 | StringBuilder connection = null; |
| 498 | |
| 499 | if (fields != null) |
| 500 | { |
| 501 | int s=fields.size(); |
| 502 | for (int f=0;f<s;f++) |
| 503 | { |
| 504 | HttpFields.Field field = fields.getField(f); |
| 505 | if (field==null) |
| 506 | continue; |
| 507 | |
| 508 | switch (field.getNameOrdinal()) |
| 509 | { |
| 510 | case HttpHeaders.CONTENT_LENGTH_ORDINAL: |
| 511 | content_length = field; |
| 512 | _contentLength = field.getLongValue(); |
| 513 | |
| 514 | if (_contentLength < _contentWritten || _last && _contentLength != _contentWritten) |
| 515 | content_length = null; |
| 516 | |
| 517 | // write the field to the header buffer |
| 518 | field.putTo(_header); |
| 519 | break; |
| 520 | |
| 521 | case HttpHeaders.CONTENT_TYPE_ORDINAL: |
| 522 | if (BufferUtil.isPrefix(MimeTypes.MULTIPART_BYTERANGES_BUFFER, field.getValueBuffer())) _contentLength = HttpTokens.SELF_DEFINING_CONTENT; |
| 523 | |
| 524 | // write the field to the header buffer |
| 525 | content_type=true; |
| 526 | field.putTo(_header); |
| 527 | break; |
| 528 | |
| 529 | case HttpHeaders.TRANSFER_ENCODING_ORDINAL: |
| 530 | if (_version == HttpVersions.HTTP_1_1_ORDINAL) |
| 531 | transfer_encoding = field; |
| 532 | // Do NOT add yet! |
| 533 | break; |
| 534 | |
| 535 | case HttpHeaders.CONNECTION_ORDINAL: |
| 536 | if (isRequest()) |
| 537 | field.putTo(_header); |
| 538 | |
| 539 | int connection_value = field.getValueOrdinal(); |
| 540 | switch (connection_value) |
| 541 | { |
| 542 | case -1: |
| 543 | { |
| 544 | String[] values = field.getValue().split(","); |
| 545 | for (int i=0;values!=null && i<values.length;i++) |
| 546 | { |
| 547 | CachedBuffer cb = HttpHeaderValues.CACHE.get(values[i].trim()); |
| 548 | |
| 549 | if (cb!=null) |
| 550 | { |
| 551 | switch(cb.getOrdinal()) |
| 552 | { |
| 553 | case HttpHeaderValues.CLOSE_ORDINAL: |
| 554 | close=true; |
| 555 | if (isResponse()) |
| 556 | _persistent=false; |
| 557 | keep_alive=false; |
| 558 | if (!_persistent && isResponse() && _contentLength == HttpTokens.UNKNOWN_CONTENT) |
| 559 | _contentLength = HttpTokens.EOF_CONTENT; |
| 560 | break; |
| 561 | |
| 562 | case HttpHeaderValues.KEEP_ALIVE_ORDINAL: |
| 563 | if (_version == HttpVersions.HTTP_1_0_ORDINAL) |
| 564 | { |
| 565 | keep_alive = true; |
| 566 | if (isResponse()) |
| 567 | _persistent = true; |
| 568 | } |
| 569 | break; |
| 570 | |
| 571 | default: |
| 572 | if (connection==null) |
| 573 | connection=new StringBuilder(); |
| 574 | else |
| 575 | connection.append(','); |
| 576 | connection.append(values[i]); |
| 577 | } |
| 578 | } |
| 579 | else |
| 580 | { |
| 581 | if (connection==null) |
| 582 | connection=new StringBuilder(); |
| 583 | else |
| 584 | connection.append(','); |
| 585 | connection.append(values[i]); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | break; |
| 590 | } |
| 591 | case HttpHeaderValues.UPGRADE_ORDINAL: |
| 592 | { |
| 593 | // special case for websocket connection ordering |
| 594 | if (isResponse()) |
| 595 | { |
| 596 | field.putTo(_header); |
| 597 | continue; |
| 598 | } |
| 599 | } |
| 600 | case HttpHeaderValues.CLOSE_ORDINAL: |
| 601 | { |
| 602 | close=true; |
| 603 | if (isResponse()) |
| 604 | _persistent=false; |
| 605 | if (!_persistent && isResponse() && _contentLength == HttpTokens.UNKNOWN_CONTENT) |
| 606 | _contentLength = HttpTokens.EOF_CONTENT; |
| 607 | break; |
| 608 | } |
| 609 | case HttpHeaderValues.KEEP_ALIVE_ORDINAL: |
| 610 | { |
| 611 | if (_version == HttpVersions.HTTP_1_0_ORDINAL) |
| 612 | { |
| 613 | keep_alive = true; |
| 614 | if (isResponse()) |
| 615 | _persistent=true; |
| 616 | } |
| 617 | break; |
| 618 | } |
| 619 | default: |
| 620 | { |
| 621 | if (connection==null) |
| 622 | connection=new StringBuilder(); |
| 623 | else |
| 624 | connection.append(','); |
| 625 | connection.append(field.getValue()); |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | // Do NOT add yet! |
| 630 | break; |
| 631 | |
| 632 | case HttpHeaders.SERVER_ORDINAL: |
| 633 | if (getSendServerVersion()) |
| 634 | { |
| 635 | has_server=true; |
| 636 | field.putTo(_header); |
| 637 | } |
| 638 | break; |
| 639 | |
| 640 | default: |
| 641 | // write the field to the header buffer |
| 642 | field.putTo(_header); |
| 643 | } |
| 644 | } |
| 645 | } |
| 646 | |
| 647 | // Calculate how to end _content and connection, _content length and transfer encoding |
| 648 | // settings. |
| 649 | // From RFC 2616 4.4: |
| 650 | // 1. No body for 1xx, 204, 304 & HEAD response |
| 651 | // 2. Force _content-length? |
| 652 | // 3. If Transfer-Encoding!=identity && HTTP/1.1 && !HttpConnection==close then chunk |
| 653 | // 4. Content-Length |
| 654 | // 5. multipart/byteranges |
| 655 | // 6. close |
| 656 | switch ((int) _contentLength) |
| 657 | { |
| 658 | case HttpTokens.UNKNOWN_CONTENT: |
| 659 | // It may be that we have no _content, or perhaps _content just has not been |
| 660 | // written yet? |
| 661 | |
| 662 | // Response known not to have a body |
| 663 | if (_contentWritten == 0 && isResponse() && (_status < 200 || _status == 204 || _status == 304)) |
| 664 | _contentLength = HttpTokens.NO_CONTENT; |
| 665 | else if (_last) |
| 666 | { |
| 667 | // we have seen all the _content there is |
| 668 | _contentLength = _contentWritten; |
| 669 | if (content_length == null && (isResponse() || _contentLength>0 || content_type ) && !_noContent) |
| 670 | { |
| 671 | // known length but not actually set. |
| 672 | _header.put(HttpHeaders.CONTENT_LENGTH_BUFFER); |
| 673 | _header.put(HttpTokens.COLON); |
| 674 | _header.put((byte) ' '); |
| 675 | BufferUtil.putDecLong(_header, _contentLength); |
| 676 | _header.put(HttpTokens.CRLF); |
| 677 | } |
| 678 | } |
| 679 | else |
| 680 | { |
| 681 | // No idea, so we must assume that a body is coming |
| 682 | _contentLength = (!_persistent || _version < HttpVersions.HTTP_1_1_ORDINAL ) ? HttpTokens.EOF_CONTENT : HttpTokens.CHUNKED_CONTENT; |
| 683 | if (isRequest() && _contentLength==HttpTokens.EOF_CONTENT) |
| 684 | { |
| 685 | _contentLength=HttpTokens.NO_CONTENT; |
| 686 | _noContent=true; |
| 687 | } |
| 688 | } |
| 689 | break; |
| 690 | |
| 691 | case HttpTokens.NO_CONTENT: |
| 692 | if (content_length == null && isResponse() && _status >= 200 && _status != 204 && _status != 304) |
| 693 | _header.put(CONTENT_LENGTH_0); |
| 694 | break; |
| 695 | |
| 696 | case HttpTokens.EOF_CONTENT: |
| 697 | _persistent = isRequest(); |
| 698 | break; |
| 699 | |
| 700 | case HttpTokens.CHUNKED_CONTENT: |
| 701 | break; |
| 702 | |
| 703 | default: |
| 704 | // TODO - maybe allow forced chunking by setting te ??? |
| 705 | break; |
| 706 | } |
| 707 | |
| 708 | // Add transfer_encoding if needed |
| 709 | if (_contentLength == HttpTokens.CHUNKED_CONTENT) |
| 710 | { |
| 711 | // try to use user supplied encoding as it may have other values. |
| 712 | if (transfer_encoding != null && HttpHeaderValues.CHUNKED_ORDINAL != transfer_encoding.getValueOrdinal()) |
| 713 | { |
| 714 | String c = transfer_encoding.getValue(); |
| 715 | if (c.endsWith(HttpHeaderValues.CHUNKED)) |
| 716 | transfer_encoding.putTo(_header); |
| 717 | else |
| 718 | throw new IllegalArgumentException("BAD TE"); |
| 719 | } |
| 720 | else |
| 721 | _header.put(TRANSFER_ENCODING_CHUNKED); |
| 722 | } |
| 723 | |
| 724 | // Handle connection if need be |
| 725 | if (_contentLength==HttpTokens.EOF_CONTENT) |
| 726 | { |
| 727 | keep_alive=false; |
| 728 | _persistent=false; |
| 729 | } |
| 730 | |
| 731 | if (isResponse()) |
| 732 | { |
| 733 | if (!_persistent && (close || _version > HttpVersions.HTTP_1_0_ORDINAL)) |
| 734 | { |
| 735 | _header.put(CONNECTION_CLOSE); |
| 736 | if (connection!=null) |
| 737 | { |
| 738 | _header.setPutIndex(_header.putIndex()-2); |
| 739 | _header.put((byte)','); |
| 740 | _header.put(connection.toString().getBytes()); |
| 741 | _header.put(CRLF); |
| 742 | } |
| 743 | } |
| 744 | else if (keep_alive) |
| 745 | { |
| 746 | _header.put(CONNECTION_KEEP_ALIVE); |
| 747 | if (connection!=null) |
| 748 | { |
| 749 | _header.setPutIndex(_header.putIndex()-2); |
| 750 | _header.put((byte)','); |
| 751 | _header.put(connection.toString().getBytes()); |
| 752 | _header.put(CRLF); |
| 753 | } |
| 754 | } |
| 755 | else if (connection!=null) |
| 756 | { |
| 757 | _header.put(CONNECTION_); |
| 758 | _header.put(connection.toString().getBytes()); |
| 759 | _header.put(CRLF); |
| 760 | } |
| 761 | } |
| 762 | |
| 763 | if (!has_server && _status>199 && getSendServerVersion()) |
| 764 | _header.put(SERVER); |
| 765 | |
| 766 | // end the header. |
| 767 | _header.put(HttpTokens.CRLF); |
| 768 | _state = STATE_CONTENT; |
| 769 | |
| 770 | } |
| 771 | catch(ArrayIndexOutOfBoundsException e) |
| 772 | { |
| 773 | throw new RuntimeException("Header>"+_header.capacity(),e); |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | /* ------------------------------------------------------------ */ |
| 778 | /** |
| 779 | * Complete the message. |
| 780 | * |
| 781 | * @throws IOException |
| 782 | */ |
| 783 | @Override |
| 784 | public void complete() throws IOException |
| 785 | { |
| 786 | if (_state == STATE_END) |
| 787 | return; |
| 788 | |
| 789 | super.complete(); |
| 790 | |
| 791 | if (_state < STATE_FLUSHING) |
| 792 | { |
| 793 | _state = STATE_FLUSHING; |
| 794 | if (_contentLength == HttpTokens.CHUNKED_CONTENT) |
| 795 | _needEOC = true; |
| 796 | } |
| 797 | |
| 798 | flushBuffer(); |
| 799 | } |
| 800 | |
| 801 | /* ------------------------------------------------------------ */ |
| 802 | @Override |
| 803 | public int flushBuffer() throws IOException |
| 804 | { |
| 805 | try |
| 806 | { |
| 807 | |
| 808 | if (_state == STATE_HEADER) |
| 809 | throw new IllegalStateException("State==HEADER"); |
| 810 | |
| 811 | prepareBuffers(); |
| 812 | |
| 813 | if (_endp == null) |
| 814 | { |
| 815 | if (_needCRLF && _buffer!=null) |
| 816 | _buffer.put(HttpTokens.CRLF); |
| 817 | if (_needEOC && _buffer!=null && !_head) |
| 818 | _buffer.put(LAST_CHUNK); |
| 819 | _needCRLF=false; |
| 820 | _needEOC=false; |
| 821 | return 0; |
| 822 | } |
| 823 | |
| 824 | int total= 0; |
| 825 | |
| 826 | int len = -1; |
| 827 | int to_flush = flushMask(); |
| 828 | int last_flush; |
| 829 | |
| 830 | do |
| 831 | { |
| 832 | last_flush=to_flush; |
| 833 | switch (to_flush) |
| 834 | { |
| 835 | case 7: |
| 836 | throw new IllegalStateException(); // should never happen! |
| 837 | case 6: |
| 838 | len = _endp.flush(_header, _buffer, null); |
| 839 | break; |
| 840 | case 5: |
| 841 | len = _endp.flush(_header, _content, null); |
| 842 | break; |
| 843 | case 4: |
| 844 | len = _endp.flush(_header); |
| 845 | break; |
| 846 | case 3: |
| 847 | len = _endp.flush(_buffer, _content, null); |
| 848 | break; |
| 849 | case 2: |
| 850 | len = _endp.flush(_buffer); |
| 851 | break; |
| 852 | case 1: |
| 853 | len = _endp.flush(_content); |
| 854 | break; |
| 855 | case 0: |
| 856 | { |
| 857 | len=0; |
| 858 | // Nothing more we can write now. |
| 859 | if (_header != null) |
| 860 | _header.clear(); |
| 861 | |
| 862 | _bypass = false; |
| 863 | _bufferChunked = false; |
| 864 | |
| 865 | if (_buffer != null) |
| 866 | { |
| 867 | _buffer.clear(); |
| 868 | if (_contentLength == HttpTokens.CHUNKED_CONTENT) |
| 869 | { |
| 870 | // reserve some space for the chunk header |
| 871 | _buffer.setPutIndex(CHUNK_SPACE); |
| 872 | _buffer.setGetIndex(CHUNK_SPACE); |
| 873 | |
| 874 | // Special case handling for small left over buffer from |
| 875 | // an addContent that caused a buffer flush. |
| 876 | if (_content != null && _content.length() < _buffer.space() && _state != STATE_FLUSHING) |
| 877 | { |
| 878 | _buffer.put(_content); |
| 879 | _content.clear(); |
| 880 | _content=null; |
| 881 | } |
| 882 | } |
| 883 | } |
| 884 | |
| 885 | // Are we completely finished for now? |
| 886 | if (!_needCRLF && !_needEOC && (_content==null || _content.length()==0)) |
| 887 | { |
| 888 | if (_state == STATE_FLUSHING) |
| 889 | _state = STATE_END; |
| 890 | |
| 891 | if (_state==STATE_END && _persistent != null && !_persistent && _status!=100 && _method==null) |
| 892 | _endp.shutdownOutput(); |
| 893 | } |
| 894 | else |
| 895 | // Try to prepare more to write. |
| 896 | prepareBuffers(); |
| 897 | } |
| 898 | |
| 899 | } |
| 900 | |
| 901 | if (len > 0) |
| 902 | total+=len; |
| 903 | |
| 904 | to_flush = flushMask(); |
| 905 | } |
| 906 | // loop while progress is being made (OR we have prepared some buffers that might make progress) |
| 907 | while (len>0 || (to_flush!=0 && last_flush==0)); |
| 908 | |
| 909 | return total; |
| 910 | } |
| 911 | catch (IOException e) |
| 912 | { |
| 913 | LOG.ignore(e); |
| 914 | throw (e instanceof EofException) ? e:new EofException(e); |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | /* ------------------------------------------------------------ */ |
| 919 | private int flushMask() |
| 920 | { |
| 921 | return ((_header != null && _header.length() > 0)?4:0) |
| 922 | | ((_buffer != null && _buffer.length() > 0)?2:0) |
| 923 | | ((_bypass && _content != null && _content.length() > 0)?1:0); |
| 924 | } |
| 925 | |
| 926 | /* ------------------------------------------------------------ */ |
| 927 | private void prepareBuffers() |
| 928 | { |
| 929 | // if we are not flushing an existing chunk |
| 930 | if (!_bufferChunked) |
| 931 | { |
| 932 | // Refill buffer if possible |
| 933 | if (!_bypass && _content != null && _content.length() > 0 && _buffer != null && _buffer.space() > 0) |
| 934 | { |
| 935 | int len = _buffer.put(_content); |
| 936 | _content.skip(len); |
| 937 | if (_content.length() == 0) |
| 938 | _content = null; |
| 939 | } |
| 940 | |
| 941 | // Chunk buffer if need be |
| 942 | if (_contentLength == HttpTokens.CHUNKED_CONTENT) |
| 943 | { |
| 944 | if (_bypass && (_buffer==null||_buffer.length()==0) && _content!=null) |
| 945 | { |
| 946 | // this is a bypass write |
| 947 | int size = _content.length(); |
| 948 | _bufferChunked = true; |
| 949 | |
| 950 | if (_header == null) |
| 951 | _header = _buffers.getHeader(); |
| 952 | |
| 953 | // if we need CRLF add this to header |
| 954 | if (_needCRLF) |
| 955 | { |
| 956 | if (_header.length() > 0) throw new IllegalStateException("EOC"); |
| 957 | _header.put(HttpTokens.CRLF); |
| 958 | _needCRLF = false; |
| 959 | } |
| 960 | // Add the chunk size to the header |
| 961 | BufferUtil.putHexInt(_header, size); |
| 962 | _header.put(HttpTokens.CRLF); |
| 963 | |
| 964 | // Need a CRLF after the content |
| 965 | _needCRLF=true; |
| 966 | } |
| 967 | else if (_buffer!=null) |
| 968 | { |
| 969 | int size = _buffer.length(); |
| 970 | if (size > 0) |
| 971 | { |
| 972 | // Prepare a chunk! |
| 973 | _bufferChunked = true; |
| 974 | |
| 975 | // Did we leave space at the start of the buffer. |
| 976 | //noinspection ConstantConditions |
| 977 | if (_buffer.getIndex() == CHUNK_SPACE) |
| 978 | { |
| 979 | // Oh yes, goodie! let's use it then! |
| 980 | _buffer.poke(_buffer.getIndex() - 2, HttpTokens.CRLF, 0, 2); |
| 981 | _buffer.setGetIndex(_buffer.getIndex() - 2); |
| 982 | BufferUtil.prependHexInt(_buffer, size); |
| 983 | |
| 984 | if (_needCRLF) |
| 985 | { |
| 986 | _buffer.poke(_buffer.getIndex() - 2, HttpTokens.CRLF, 0, 2); |
| 987 | _buffer.setGetIndex(_buffer.getIndex() - 2); |
| 988 | _needCRLF = false; |
| 989 | } |
| 990 | } |
| 991 | else |
| 992 | { |
| 993 | // No space so lets use a header buffer. |
| 994 | if (_header == null) |
| 995 | _header = _buffers.getHeader(); |
| 996 | |
| 997 | if (_needCRLF) |
| 998 | { |
| 999 | if (_header.length() > 0) throw new IllegalStateException("EOC"); |
| 1000 | _header.put(HttpTokens.CRLF); |
| 1001 | _needCRLF = false; |
| 1002 | } |
| 1003 | BufferUtil.putHexInt(_header, size); |
| 1004 | _header.put(HttpTokens.CRLF); |
| 1005 | } |
| 1006 | |
| 1007 | // Add end chunk trailer. |
| 1008 | if (_buffer.space() >= 2) |
| 1009 | _buffer.put(HttpTokens.CRLF); |
| 1010 | else |
| 1011 | _needCRLF = true; |
| 1012 | } |
| 1013 | } |
| 1014 | |
| 1015 | // If we need EOC and everything written |
| 1016 | if (_needEOC && (_content == null || _content.length() == 0)) |
| 1017 | { |
| 1018 | if (_header == null && _buffer == null) |
| 1019 | _header = _buffers.getHeader(); |
| 1020 | |
| 1021 | if (_needCRLF) |
| 1022 | { |
| 1023 | if (_buffer == null && _header != null && _header.space() >= HttpTokens.CRLF.length) |
| 1024 | { |
| 1025 | _header.put(HttpTokens.CRLF); |
| 1026 | _needCRLF = false; |
| 1027 | } |
| 1028 | else if (_buffer!=null && _buffer.space() >= HttpTokens.CRLF.length) |
| 1029 | { |
| 1030 | _buffer.put(HttpTokens.CRLF); |
| 1031 | _needCRLF = false; |
| 1032 | } |
| 1033 | } |
| 1034 | |
| 1035 | if (!_needCRLF && _needEOC) |
| 1036 | { |
| 1037 | if (_buffer == null && _header != null && _header.space() >= LAST_CHUNK.length) |
| 1038 | { |
| 1039 | if (!_head) |
| 1040 | { |
| 1041 | _header.put(LAST_CHUNK); |
| 1042 | _bufferChunked=true; |
| 1043 | } |
| 1044 | _needEOC = false; |
| 1045 | } |
| 1046 | else if (_buffer!=null && _buffer.space() >= LAST_CHUNK.length) |
| 1047 | { |
| 1048 | if (!_head) |
| 1049 | { |
| 1050 | _buffer.put(LAST_CHUNK); |
| 1051 | _bufferChunked=true; |
| 1052 | } |
| 1053 | _needEOC = false; |
| 1054 | } |
| 1055 | } |
| 1056 | } |
| 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | if (_content != null && _content.length() == 0) |
| 1061 | _content = null; |
| 1062 | |
| 1063 | } |
| 1064 | |
| 1065 | public int getBytesBuffered() |
| 1066 | { |
| 1067 | return(_header==null?0:_header.length())+ |
| 1068 | (_buffer==null?0:_buffer.length())+ |
| 1069 | (_content==null?0:_content.length()); |
| 1070 | } |
| 1071 | |
| 1072 | public boolean isEmpty() |
| 1073 | { |
| 1074 | return (_header==null||_header.length()==0) && |
| 1075 | (_buffer==null||_buffer.length()==0) && |
| 1076 | (_content==null||_content.length()==0); |
| 1077 | } |
| 1078 | |
| 1079 | @Override |
| 1080 | public String toString() |
| 1081 | { |
| 1082 | Buffer header=_header; |
| 1083 | Buffer buffer=_buffer; |
| 1084 | Buffer content=_content; |
| 1085 | return String.format("%s{s=%d,h=%d,b=%d,c=%d}", |
| 1086 | getClass().getSimpleName(), |
| 1087 | _state, |
| 1088 | header == null ? -1 : header.length(), |
| 1089 | buffer == null ? -1 : buffer.length(), |
| 1090 | content == null ? -1 : content.length()); |
| 1091 | } |
| 1092 | } |