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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 class _HttpHeaders implements HttpHeaders { | |
| 6 _HttpHeaders() : _headers = new Map<String, List<String>>(); | |
| 7 | |
| 8 List<String> operator[](String name) { | |
| 9 name = name.toLowerCase(); | |
| 10 return _headers[name]; | |
| 11 } | |
| 12 | |
| 13 String value(String name) { | |
| 14 name = name.toLowerCase(); | |
| 15 List<String> values = _headers[name]; | |
| 16 if (values == null) return null; | |
| 17 if (values.length > 1) { | |
| 18 throw new HttpException("More than one value for header $name"); | |
| 19 } | |
| 20 return values[0]; | |
| 21 } | |
| 22 | |
| 23 void add(String name, Object value) { | |
| 24 _checkMutable(); | |
| 25 if (value is List) { | |
| 26 for (int i = 0; i < value.length; i++) { | |
| 27 _add(name, value[i]); | |
| 28 } | |
| 29 } else { | |
| 30 _add(name, value); | |
| 31 } | |
| 32 } | |
| 33 | |
| 34 void set(String name, Object value) { | |
| 35 name = name.toLowerCase(); | |
| 36 _checkMutable(); | |
| 37 removeAll(name); | |
| 38 add(name, value); | |
| 39 } | |
| 40 | |
| 41 void remove(String name, Object value) { | |
| 42 _checkMutable(); | |
| 43 name = name.toLowerCase(); | |
| 44 List<String> values = _headers[name]; | |
| 45 if (values != null) { | |
| 46 int index = values.indexOf(value); | |
| 47 if (index != -1) { | |
| 48 values.removeRange(index, 1); | |
| 49 } | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 void removeAll(String name) { | |
| 54 _checkMutable(); | |
| 55 name = name.toLowerCase(); | |
| 56 _headers.remove(name); | |
| 57 } | |
| 58 | |
| 59 void forEach(void f(String name, List<String> values)) { | |
| 60 _headers.forEach(f); | |
| 61 } | |
| 62 | |
| 63 void noFolding(String name) { | |
| 64 if (_noFoldingHeaders == null) _noFoldingHeaders = new List<String>(); | |
| 65 _noFoldingHeaders.add(name); | |
| 66 } | |
| 67 | |
| 68 String get host => _host; | |
| 69 | |
| 70 void set host(String host) { | |
| 71 _checkMutable(); | |
| 72 _host = host; | |
| 73 _updateHostHeader(); | |
| 74 } | |
| 75 | |
| 76 int get port => _port; | |
| 77 | |
| 78 void set port(int port) { | |
| 79 _checkMutable(); | |
| 80 _port = port; | |
| 81 _updateHostHeader(); | |
| 82 } | |
| 83 | |
| 84 Date get ifModifiedSince { | |
| 85 List<String> values = _headers["if-modified-since"]; | |
| 86 if (values != null) { | |
| 87 try { | |
| 88 return _HttpUtils.parseDate(values[0]); | |
| 89 } on Exception catch (e) { | |
| 90 return null; | |
| 91 } | |
| 92 } | |
| 93 return null; | |
| 94 } | |
| 95 | |
| 96 void set ifModifiedSince(Date ifModifiedSince) { | |
| 97 _checkMutable(); | |
| 98 // Format "ifModifiedSince" header with date in Greenwich Mean Time (GMT). | |
| 99 String formatted = _HttpUtils.formatDate(ifModifiedSince.toUtc()); | |
| 100 _set("if-modified-since", formatted); | |
| 101 } | |
| 102 | |
| 103 Date get date { | |
| 104 List<String> values = _headers["date"]; | |
| 105 if (values != null) { | |
| 106 try { | |
| 107 return _HttpUtils.parseDate(values[0]); | |
| 108 } on Exception catch (e) { | |
| 109 return null; | |
| 110 } | |
| 111 } | |
| 112 return null; | |
| 113 } | |
| 114 | |
| 115 void set date(Date date) { | |
| 116 _checkMutable(); | |
| 117 // Format "Date" header with date in Greenwich Mean Time (GMT). | |
| 118 String formatted = _HttpUtils.formatDate(date.toUtc()); | |
| 119 _set("date", formatted); | |
| 120 } | |
| 121 | |
| 122 Date get expires { | |
| 123 List<String> values = _headers["expires"]; | |
| 124 if (values != null) { | |
| 125 try { | |
| 126 return _HttpUtils.parseDate(values[0]); | |
| 127 } on Exception catch (e) { | |
| 128 return null; | |
| 129 } | |
| 130 } | |
| 131 return null; | |
| 132 } | |
| 133 | |
| 134 void set expires(Date expires) { | |
| 135 _checkMutable(); | |
| 136 // Format "Expires" header with date in Greenwich Mean Time (GMT). | |
| 137 String formatted = _HttpUtils.formatDate(expires.toUtc()); | |
| 138 _set("expires", formatted); | |
| 139 } | |
| 140 | |
| 141 ContentType get contentType { | |
| 142 var values = _headers["content-type"]; | |
| 143 if (values != null) { | |
| 144 return new ContentType.fromString(values[0]); | |
| 145 } else { | |
| 146 return new ContentType(); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 void set contentType(ContentType contentType) { | |
| 151 _checkMutable(); | |
| 152 _set("content-type", contentType.toString()); | |
| 153 } | |
| 154 | |
| 155 void _add(String name, Object value) { | |
| 156 // TODO(sgjesse): Add immutable state throw HttpException is immutable. | |
| 157 if (name.toLowerCase() == "date") { | |
| 158 if (value is Date) { | |
| 159 date = value; | |
| 160 } else if (value is String) { | |
| 161 _set("date", value); | |
| 162 } else { | |
| 163 throw new HttpException("Unexpected type for header named $name"); | |
| 164 } | |
| 165 } else if (name.toLowerCase() == "expires") { | |
| 166 if (value is Date) { | |
| 167 expires = value; | |
| 168 } else if (value is String) { | |
| 169 _set("expires", value); | |
| 170 } else { | |
| 171 throw new HttpException("Unexpected type for header named $name"); | |
| 172 } | |
| 173 } else if (name.toLowerCase() == "if-modified-since") { | |
| 174 if (value is Date) { | |
| 175 ifModifiedSince = value; | |
| 176 } else if (value is String) { | |
| 177 _set("if-modified-since", value); | |
| 178 } else { | |
| 179 throw new HttpException("Unexpected type for header named $name"); | |
| 180 } | |
| 181 } else if (name.toLowerCase() == "host") { | |
| 182 int pos = value.indexOf(":"); | |
| 183 if (pos == -1) { | |
| 184 _host = value; | |
| 185 _port = HttpClient.DEFAULT_HTTP_PORT; | |
| 186 } else { | |
| 187 if (pos > 0) { | |
| 188 _host = value.substring(0, pos); | |
| 189 } else { | |
| 190 _host = null; | |
| 191 } | |
| 192 if (pos + 1 == value.length) { | |
| 193 _port = HttpClient.DEFAULT_HTTP_PORT; | |
| 194 } else { | |
| 195 try { | |
| 196 _port = parseInt(value.substring(pos + 1)); | |
| 197 } on FormatException catch (e) { | |
| 198 _port = null; | |
| 199 } | |
| 200 } | |
| 201 _set("host", value); | |
| 202 } | |
| 203 } else if (name.toLowerCase() == "content-type") { | |
| 204 _set("content-type", value); | |
| 205 } else { | |
| 206 name = name.toLowerCase(); | |
| 207 List<String> values = _headers[name]; | |
| 208 if (values == null) { | |
| 209 values = new List<String>(); | |
| 210 _headers[name] = values; | |
| 211 } | |
| 212 if (value is Date) { | |
| 213 values.add(_HttpUtils.formatDate(value)); | |
| 214 } else { | |
| 215 values.add(value.toString()); | |
| 216 } | |
| 217 } | |
| 218 } | |
| 219 | |
| 220 void _set(String name, String value) { | |
| 221 name = name.toLowerCase(); | |
| 222 List<String> values = new List<String>(); | |
| 223 _headers[name] = values; | |
| 224 values.add(value); | |
| 225 } | |
| 226 | |
| 227 _checkMutable() { | |
| 228 if (!_mutable) throw new HttpException("HTTP headers are not mutable"); | |
| 229 } | |
| 230 | |
| 231 _updateHostHeader() { | |
| 232 bool defaultPort = _port == null || _port == HttpClient.DEFAULT_HTTP_PORT; | |
| 233 String portPart = defaultPort ? "" : ":$_port"; | |
| 234 _set("host", "$host$portPart"); | |
| 235 } | |
| 236 | |
| 237 _foldHeader(String name) { | |
| 238 if (name == "set-cookie" || | |
| 239 (_noFoldingHeaders != null && | |
| 240 _noFoldingHeaders.indexOf(name) != -1)) { | |
| 241 return false; | |
| 242 } | |
| 243 return true; | |
| 244 } | |
| 245 | |
| 246 _write(_HttpConnectionBase connection) { | |
| 247 final COLONSP = const [_CharCode.COLON, _CharCode.SP]; | |
| 248 final COMMASP = const [_CharCode.COMMA, _CharCode.SP]; | |
| 249 final CRLF = const [_CharCode.CR, _CharCode.LF]; | |
| 250 | |
| 251 // Format headers. | |
| 252 _headers.forEach((String name, List<String> values) { | |
| 253 bool fold = _foldHeader(name); | |
| 254 List<int> data; | |
| 255 data = name.charCodes; | |
| 256 connection._write(data); | |
| 257 connection._write(COLONSP); | |
| 258 for (int i = 0; i < values.length; i++) { | |
| 259 if (i > 0) { | |
| 260 if (fold) { | |
| 261 connection._write(COMMASP); | |
| 262 } else { | |
| 263 connection._write(CRLF); | |
| 264 data = name.charCodes; | |
| 265 connection._write(data); | |
| 266 connection._write(COLONSP); | |
| 267 } | |
| 268 } | |
| 269 data = values[i].charCodes; | |
| 270 connection._write(data); | |
| 271 } | |
| 272 connection._write(CRLF); | |
| 273 }); | |
| 274 } | |
| 275 | |
| 276 String toString() { | |
| 277 StringBuffer sb = new StringBuffer(); | |
| 278 _headers.forEach((String name, List<String> values) { | |
| 279 sb.add(name); | |
| 280 sb.add(": "); | |
| 281 bool fold = _foldHeader(name); | |
| 282 for (int i = 0; i < values.length; i++) { | |
| 283 if (i > 0) { | |
| 284 if (fold) { | |
| 285 sb.add(", "); | |
| 286 } else { | |
| 287 sb.add("\n"); | |
| 288 sb.add(name); | |
| 289 sb.add(": "); | |
| 290 } | |
| 291 } | |
| 292 sb.add(values[i]); | |
| 293 } | |
| 294 sb.add("\n"); | |
| 295 }); | |
| 296 return sb.toString(); | |
| 297 } | |
| 298 | |
| 299 bool _mutable = true; // Are the headers currently mutable? | |
| 300 Map<String, List<String>> _headers; | |
| 301 List<String> _noFoldingHeaders; | |
| 302 | |
| 303 String _host; | |
| 304 int _port; | |
| 305 } | |
| 306 | |
| 307 | |
| 308 class _HeaderValue implements HeaderValue { | |
| 309 _HeaderValue([String this.value = ""]); | |
| 310 | |
| 311 _HeaderValue.fromString(String value, {this.parameterSeparator: ";"}) { | |
| 312 // Parse the string. | |
| 313 _parse(value); | |
| 314 } | |
| 315 | |
| 316 Map<String, String> get parameters { | |
| 317 if (_parameters == null) _parameters = new Map<String, String>(); | |
| 318 return _parameters; | |
| 319 } | |
| 320 | |
| 321 String toString() { | |
| 322 StringBuffer sb = new StringBuffer(); | |
| 323 sb.add(value); | |
| 324 if (parameters != null && parameters.length > 0) { | |
| 325 _parameters.forEach((String name, String value) { | |
| 326 sb.add("; "); | |
| 327 sb.add(name); | |
| 328 sb.add("="); | |
| 329 sb.add(value); | |
| 330 }); | |
| 331 } | |
| 332 return sb.toString(); | |
| 333 } | |
| 334 | |
| 335 void _parse(String s) { | |
| 336 int index = 0; | |
| 337 | |
| 338 bool done() => index == s.length; | |
| 339 | |
| 340 void skipWS() { | |
| 341 while (!done()) { | |
| 342 if (s[index] != " " && s[index] != "\t") return; | |
| 343 index++; | |
| 344 } | |
| 345 } | |
| 346 | |
| 347 String parseValue() { | |
| 348 int start = index; | |
| 349 while (!done()) { | |
| 350 if (s[index] == " " || | |
| 351 s[index] == "\t" || | |
| 352 s[index] == parameterSeparator) break; | |
| 353 index++; | |
| 354 } | |
| 355 return s.substring(start, index).toLowerCase(); | |
| 356 } | |
| 357 | |
| 358 void expect(String expected) { | |
| 359 if (done() || s[index] != expected) { | |
| 360 throw new HttpException("Failed to parse header value"); | |
| 361 } | |
| 362 index++; | |
| 363 } | |
| 364 | |
| 365 void maybeExpect(String expected) { | |
| 366 if (s[index] == expected) index++; | |
| 367 } | |
| 368 | |
| 369 void parseParameters() { | |
| 370 _parameters = new Map<String, String>(); | |
| 371 | |
| 372 String parseParameterName() { | |
| 373 int start = index; | |
| 374 while (!done()) { | |
| 375 if (s[index] == " " || s[index] == "\t" || s[index] == "=") break; | |
| 376 index++; | |
| 377 } | |
| 378 return s.substring(start, index).toLowerCase(); | |
| 379 } | |
| 380 | |
| 381 String parseParameterValue() { | |
| 382 if (s[index] == "\"") { | |
| 383 // Parse quoted value. | |
| 384 StringBuffer sb = new StringBuffer(); | |
| 385 index++; | |
| 386 while (!done()) { | |
| 387 if (s[index] == "\\") { | |
| 388 if (index + 1 == s.length) { | |
| 389 throw new HttpException("Failed to parse header value"); | |
| 390 } | |
| 391 index++; | |
| 392 } else if (s[index] == "\"") { | |
| 393 index++; | |
| 394 break; | |
| 395 } | |
| 396 sb.add(s[index]); | |
| 397 index++; | |
| 398 } | |
| 399 return sb.toString(); | |
| 400 } else { | |
| 401 // Parse non-quoted value. | |
| 402 return parseValue(); | |
| 403 } | |
| 404 } | |
| 405 | |
| 406 while (!done()) { | |
| 407 skipWS(); | |
| 408 if (done()) return; | |
| 409 String name = parseParameterName(); | |
| 410 skipWS(); | |
| 411 expect("="); | |
| 412 skipWS(); | |
| 413 String value = parseParameterValue(); | |
| 414 _parameters[name] = value; | |
| 415 skipWS(); | |
| 416 if (done()) return; | |
| 417 expect(parameterSeparator); | |
| 418 } | |
| 419 } | |
| 420 | |
| 421 skipWS(); | |
| 422 value = parseValue(); | |
| 423 skipWS(); | |
| 424 if (done()) return; | |
| 425 maybeExpect(parameterSeparator); | |
| 426 parseParameters(); | |
| 427 } | |
| 428 | |
| 429 String value; | |
| 430 String parameterSeparator; | |
| 431 Map<String, String> _parameters; | |
| 432 } | |
| 433 | |
| 434 | |
| 435 class _ContentType extends _HeaderValue implements ContentType { | |
| 436 _ContentType(String primaryType, String subType) | |
| 437 : _primaryType = primaryType, _subType = subType, super(""); | |
| 438 | |
| 439 _ContentType.fromString(String value) : super.fromString(value); | |
| 440 | |
| 441 String get value => "$_primaryType/$_subType"; | |
| 442 | |
| 443 void set value(String s) { | |
| 444 int index = s.indexOf("/"); | |
| 445 if (index == -1 || index == (s.length - 1)) { | |
| 446 primaryType = s.trim().toLowerCase(); | |
| 447 subType = ""; | |
| 448 } else { | |
| 449 primaryType = s.substring(0, index).trim().toLowerCase(); | |
| 450 subType = s.substring(index + 1).trim().toLowerCase(); | |
| 451 } | |
| 452 } | |
| 453 | |
| 454 String get primaryType => _primaryType; | |
| 455 | |
| 456 void set primaryType(String s) { | |
| 457 _primaryType = s; | |
| 458 } | |
| 459 | |
| 460 String get subType => _subType; | |
| 461 | |
| 462 void set subType(String s) { | |
| 463 _subType = s; | |
| 464 } | |
| 465 | |
| 466 String get charset => parameters["charset"]; | |
| 467 | |
| 468 void set charset(String s) { | |
| 469 parameters["charset"] = s; | |
| 470 } | |
| 471 | |
| 472 String _primaryType = ""; | |
| 473 String _subType = ""; | |
| 474 } | |
| 475 | |
| 476 | |
| 477 class _Cookie implements Cookie { | |
| 478 _Cookie([String this.name, String this.value]); | |
| 479 | |
| 480 _Cookie.fromSetCookieValue(String value) { | |
| 481 // Parse the Set-Cookie header value. | |
| 482 _parseSetCookieValue(value); | |
| 483 } | |
| 484 | |
| 485 // Parse a Set-Cookie header value according to the rules in RFC 6265. | |
| 486 void _parseSetCookieValue(String s) { | |
| 487 int index = 0; | |
| 488 | |
| 489 bool done() => index == s.length; | |
| 490 | |
| 491 String parseName() { | |
| 492 int start = index; | |
| 493 while (!done()) { | |
| 494 if (s[index] == "=") break; | |
| 495 index++; | |
| 496 } | |
| 497 return s.substring(start, index).trim().toLowerCase(); | |
| 498 } | |
| 499 | |
| 500 String parseValue() { | |
| 501 int start = index; | |
| 502 while (!done()) { | |
| 503 if (s[index] == ";") break; | |
| 504 index++; | |
| 505 } | |
| 506 return s.substring(start, index).trim().toLowerCase(); | |
| 507 } | |
| 508 | |
| 509 void expect(String expected) { | |
| 510 if (done()) throw new HttpException("Failed to parse header value [$s]"); | |
| 511 if (s[index] != expected) { | |
| 512 throw new HttpException("Failed to parse header value [$s]"); | |
| 513 } | |
| 514 index++; | |
| 515 } | |
| 516 | |
| 517 void parseAttributes() { | |
| 518 String parseAttributeName() { | |
| 519 int start = index; | |
| 520 while (!done()) { | |
| 521 if (s[index] == "=" || s[index] == ";") break; | |
| 522 index++; | |
| 523 } | |
| 524 return s.substring(start, index).trim().toLowerCase(); | |
| 525 } | |
| 526 | |
| 527 String parseAttributeValue() { | |
| 528 int start = index; | |
| 529 while (!done()) { | |
| 530 if (s[index] == ";") break; | |
| 531 index++; | |
| 532 } | |
| 533 return s.substring(start, index).trim().toLowerCase(); | |
| 534 } | |
| 535 | |
| 536 while (!done()) { | |
| 537 String name = parseAttributeName(); | |
| 538 String value = ""; | |
| 539 if (!done() && s[index] == "=") { | |
| 540 index++; // Skip the = character. | |
| 541 value = parseAttributeValue(); | |
| 542 } | |
| 543 if (name == "expires") { | |
| 544 expires = _HttpUtils.parseCookieDate(value); | |
| 545 } else if (name == "max-age") { | |
| 546 maxAge = parseInt(value); | |
| 547 } else if (name == "domain") { | |
| 548 domain = value; | |
| 549 } else if (name == "path") { | |
| 550 path = value; | |
| 551 } else if (name == "httponly") { | |
| 552 httpOnly = true; | |
| 553 } else if (name == "secure") { | |
| 554 secure = true; | |
| 555 } | |
| 556 if (!done()) index++; // Skip the ; character | |
| 557 } | |
| 558 } | |
| 559 | |
| 560 name = parseName(); | |
| 561 if (done() || name.length == 0) { | |
| 562 throw new HttpException("Failed to parse header value [$s]"); | |
| 563 } | |
| 564 index++; // Skip the = character. | |
| 565 value = parseValue(); | |
| 566 if (done()) return; | |
| 567 index++; // Skip the ; character. | |
| 568 parseAttributes(); | |
| 569 } | |
| 570 | |
| 571 String toString() { | |
| 572 StringBuffer sb = new StringBuffer(); | |
| 573 sb.add(name); | |
| 574 sb.add("="); | |
| 575 sb.add(value); | |
| 576 if (expires != null) { | |
| 577 sb.add("; Expires="); | |
| 578 sb.add(_HttpUtils.formatDate(expires)); | |
| 579 } | |
| 580 if (maxAge != null) { | |
| 581 sb.add("; Max-Age="); | |
| 582 sb.add(maxAge); | |
| 583 } | |
| 584 if (domain != null) { | |
| 585 sb.add("; Domain="); | |
| 586 sb.add(domain); | |
| 587 } | |
| 588 if (path != null) { | |
| 589 sb.add("; Path="); | |
| 590 sb.add(path); | |
| 591 } | |
| 592 if (secure) sb.add("; Secure"); | |
| 593 if (httpOnly) sb.add("; HttpOnly"); | |
| 594 return sb.toString(); | |
| 595 } | |
| 596 | |
| 597 String name; | |
| 598 String value; | |
| 599 Date expires; | |
| 600 int maxAge; | |
| 601 String domain; | |
| 602 String path; | |
| 603 bool httpOnly = false; | |
| 604 bool secure = false; | |
| 605 } | |
| 606 | |
| 607 | |
| 608 class _HttpRequestResponseBase { | |
| 609 final int START = 0; | |
| 610 final int HEADER_SENT = 1; | |
| 611 final int DONE = 2; | |
| 612 final int UPGRADED = 3; | |
| 613 | |
| 614 _HttpRequestResponseBase(_HttpConnectionBase this._httpConnection) | |
| 615 : _headers = new _HttpHeaders() { | |
| 616 _state = START; | |
| 617 _headResponse = false; | |
| 618 } | |
| 619 | |
| 620 int get contentLength => _contentLength; | |
| 621 HttpHeaders get headers => _headers; | |
| 622 | |
| 623 bool get persistentConnection { | |
| 624 List<String> connection = headers[HttpHeaders.CONNECTION]; | |
| 625 if (_protocolVersion == "1.1") { | |
| 626 if (connection == null) return true; | |
| 627 return !headers[HttpHeaders.CONNECTION].some( | |
| 628 (value) => value.toLowerCase() == "close"); | |
| 629 } else { | |
| 630 if (connection == null) return false; | |
| 631 return headers[HttpHeaders.CONNECTION].some( | |
| 632 (value) => value.toLowerCase() == "keep-alive"); | |
| 633 } | |
| 634 } | |
| 635 | |
| 636 void set persistentConnection(bool persistentConnection) { | |
| 637 if (_outputStream != null) throw new HttpException("Header already sent"); | |
| 638 | |
| 639 // Determine the value of the "Connection" header. | |
| 640 headers.remove(HttpHeaders.CONNECTION, "close"); | |
| 641 headers.remove(HttpHeaders.CONNECTION, "keep-alive"); | |
| 642 if (_protocolVersion == "1.1" && !persistentConnection) { | |
| 643 headers.add(HttpHeaders.CONNECTION, "close"); | |
| 644 } else if (_protocolVersion == "1.0" && persistentConnection) { | |
| 645 headers.add(HttpHeaders.CONNECTION, "keep-alive"); | |
| 646 } | |
| 647 } | |
| 648 | |
| 649 | |
| 650 bool _write(List<int> data, bool copyBuffer) { | |
| 651 if (_headResponse) return; | |
| 652 _ensureHeadersSent(); | |
| 653 bool allWritten = true; | |
| 654 if (data.length > 0) { | |
| 655 if (_contentLength < 0) { | |
| 656 // Write chunk size if transfer encoding is chunked. | |
| 657 _writeHexString(data.length); | |
| 658 _writeCRLF(); | |
| 659 _httpConnection._write(data, copyBuffer); | |
| 660 allWritten = _writeCRLF(); | |
| 661 } else { | |
| 662 _updateContentLength(data.length); | |
| 663 allWritten = _httpConnection._write(data, copyBuffer); | |
| 664 } | |
| 665 } | |
| 666 return allWritten; | |
| 667 } | |
| 668 | |
| 669 bool _writeList(List<int> data, int offset, int count) { | |
| 670 if (_headResponse) return; | |
| 671 _ensureHeadersSent(); | |
| 672 bool allWritten = true; | |
| 673 if (count > 0) { | |
| 674 if (_contentLength < 0) { | |
| 675 // Write chunk size if transfer encoding is chunked. | |
| 676 _writeHexString(count); | |
| 677 _writeCRLF(); | |
| 678 _httpConnection._writeFrom(data, offset, count); | |
| 679 allWritten = _writeCRLF(); | |
| 680 } else { | |
| 681 _updateContentLength(count); | |
| 682 allWritten = _httpConnection._writeFrom(data, offset, count); | |
| 683 } | |
| 684 } | |
| 685 return allWritten; | |
| 686 } | |
| 687 | |
| 688 bool _writeDone() { | |
| 689 bool allWritten = true; | |
| 690 if (_contentLength < 0) { | |
| 691 // Terminate the content if transfer encoding is chunked. | |
| 692 allWritten = _httpConnection._write(_Const.END_CHUNKED); | |
| 693 } else { | |
| 694 if (!_headResponse && _bodyBytesWritten < _contentLength) { | |
| 695 throw new HttpException("Sending less than specified content length"); | |
| 696 } | |
| 697 assert(_headResponse || _bodyBytesWritten == _contentLength); | |
| 698 } | |
| 699 // If we are done writing the response, and either the client has | |
| 700 // closed or the connection is not persistent, we can close. Also | |
| 701 // if using HTTP 1.0 and the content length was not known we must | |
| 702 // close to indicate end of body. | |
| 703 if (!persistentConnection || _httpConnection._closing || | |
| 704 (_protocolVersion == "1.0" && _contentLength < 0)) { | |
| 705 _httpConnection._close(); | |
| 706 } | |
| 707 return allWritten; | |
| 708 } | |
| 709 | |
| 710 bool _writeHeaders() { | |
| 711 _headers._mutable = false; | |
| 712 _headers._write(_httpConnection); | |
| 713 // Terminate header. | |
| 714 return _writeCRLF(); | |
| 715 } | |
| 716 | |
| 717 bool _writeHexString(int x) { | |
| 718 final List<int> hexDigits = [0x30, 0x31, 0x32, 0x33, 0x34, | |
| 719 0x35, 0x36, 0x37, 0x38, 0x39, | |
| 720 0x41, 0x42, 0x43, 0x44, 0x45, 0x46]; | |
| 721 List<int> hex = new Uint8List(10); | |
| 722 int index = hex.length; | |
| 723 while (x > 0) { | |
| 724 index--; | |
| 725 hex[index] = hexDigits[x % 16]; | |
| 726 x = x >> 4; | |
| 727 } | |
| 728 return _httpConnection._writeFrom(hex, index, hex.length - index); | |
| 729 } | |
| 730 | |
| 731 bool _writeCRLF() { | |
| 732 final CRLF = const [_CharCode.CR, _CharCode.LF]; | |
| 733 return _httpConnection._write(CRLF); | |
| 734 } | |
| 735 | |
| 736 bool _writeSP() { | |
| 737 final SP = const [_CharCode.SP]; | |
| 738 return _httpConnection._write(SP); | |
| 739 } | |
| 740 | |
| 741 void _ensureHeadersSent() { | |
| 742 // Ensure that headers are written. | |
| 743 if (_state == START) { | |
| 744 _writeHeader(); | |
| 745 } | |
| 746 } | |
| 747 | |
| 748 void _updateContentLength(int bytes) { | |
| 749 if (_bodyBytesWritten + bytes > _contentLength) { | |
| 750 throw new HttpException("Writing more than specified content length"); | |
| 751 } | |
| 752 _bodyBytesWritten += bytes; | |
| 753 } | |
| 754 | |
| 755 HttpConnectionInfo get connectionInfo => _httpConnection.connectionInfo; | |
| 756 | |
| 757 bool get _done => _state == DONE; | |
| 758 | |
| 759 int _state; | |
| 760 bool _headResponse; | |
| 761 | |
| 762 _HttpConnectionBase _httpConnection; | |
| 763 _HttpHeaders _headers; | |
| 764 List<Cookie> _cookies; | |
| 765 String _protocolVersion = "1.1"; | |
| 766 | |
| 767 // Length of the content body. If this is set to -1 (default value) | |
| 768 // when starting to send data chunked transfer encoding will be | |
| 769 // used. | |
| 770 int _contentLength = -1; | |
| 771 // Number of body bytes written. This is only actual body data not | |
| 772 // including headers or chunk information of using chinked transfer | |
| 773 // encoding. | |
| 774 int _bodyBytesWritten = 0; | |
| 775 } | |
| 776 | |
| 777 | |
| 778 // Parsed HTTP request providing information on the HTTP headers. | |
| 779 class _HttpRequest extends _HttpRequestResponseBase implements HttpRequest { | |
| 780 _HttpRequest(_HttpConnection connection) : super(connection); | |
| 781 | |
| 782 String get method => _method; | |
| 783 String get uri => _uri; | |
| 784 String get path => _path; | |
| 785 String get queryString => _queryString; | |
| 786 Map get queryParameters => _queryParameters; | |
| 787 | |
| 788 List<Cookie> get cookies { | |
| 789 if (_cookies != null) return _cookies; | |
| 790 | |
| 791 // Parse a Cookie header value according to the rules in RFC 6265. | |
| 792 void _parseCookieString(String s) { | |
| 793 int index = 0; | |
| 794 | |
| 795 bool done() => index == s.length; | |
| 796 | |
| 797 void skipWS() { | |
| 798 while (!done()) { | |
| 799 if (s[index] != " " && s[index] != "\t") return; | |
| 800 index++; | |
| 801 } | |
| 802 } | |
| 803 | |
| 804 String parseName() { | |
| 805 int start = index; | |
| 806 while (!done()) { | |
| 807 if (s[index] == " " || s[index] == "\t" || s[index] == "=") break; | |
| 808 index++; | |
| 809 } | |
| 810 return s.substring(start, index).toLowerCase(); | |
| 811 } | |
| 812 | |
| 813 String parseValue() { | |
| 814 int start = index; | |
| 815 while (!done()) { | |
| 816 if (s[index] == " " || s[index] == "\t" || s[index] == ";") break; | |
| 817 index++; | |
| 818 } | |
| 819 return s.substring(start, index).toLowerCase(); | |
| 820 } | |
| 821 | |
| 822 void expect(String expected) { | |
| 823 if (done()) { | |
| 824 throw new HttpException("Failed to parse header value [$s]"); | |
| 825 } | |
| 826 if (s[index] != expected) { | |
| 827 throw new HttpException("Failed to parse header value [$s]"); | |
| 828 } | |
| 829 index++; | |
| 830 } | |
| 831 | |
| 832 while (!done()) { | |
| 833 skipWS(); | |
| 834 if (done()) return; | |
| 835 String name = parseName(); | |
| 836 skipWS(); | |
| 837 expect("="); | |
| 838 skipWS(); | |
| 839 String value = parseValue(); | |
| 840 _cookies.add(new _Cookie(name, value)); | |
| 841 skipWS(); | |
| 842 if (done()) return; | |
| 843 expect(";"); | |
| 844 } | |
| 845 } | |
| 846 | |
| 847 _cookies = new List<Cookie>(); | |
| 848 List<String> headerValues = headers["cookie"]; | |
| 849 if (headerValues != null) { | |
| 850 headerValues.forEach((headerValue) => _parseCookieString(headerValue)); | |
| 851 } | |
| 852 return _cookies; | |
| 853 } | |
| 854 | |
| 855 InputStream get inputStream { | |
| 856 if (_inputStream == null) { | |
| 857 _inputStream = new _HttpInputStream(this); | |
| 858 _inputStream._streamMarkedClosed = _dataEndCalled; | |
| 859 } | |
| 860 return _inputStream; | |
| 861 } | |
| 862 | |
| 863 String get protocolVersion => _protocolVersion; | |
| 864 | |
| 865 HttpSession session([init(HttpSession session)]) { | |
| 866 if (_session != null) { | |
| 867 // It's already mapped, use it. | |
| 868 return _session; | |
| 869 } | |
| 870 // Create session, store it in connection, and return. | |
| 871 var sessionManager = _httpConnection._server._sessionManager; | |
| 872 return _session = sessionManager.createSession(init); | |
| 873 } | |
| 874 | |
| 875 void _onRequestStart(String method, String uri, String version) { | |
| 876 _method = method; | |
| 877 _uri = uri; | |
| 878 _parseRequestUri(uri); | |
| 879 } | |
| 880 | |
| 881 void _onHeaderReceived(String name, String value) { | |
| 882 _headers.add(name, value); | |
| 883 } | |
| 884 | |
| 885 void _onHeadersComplete() { | |
| 886 if (_httpConnection._server._sessionManagerInstance != null) { | |
| 887 // Map to session if exists. | |
| 888 var sessionId = cookies.reduce(null, (last, cookie) { | |
| 889 if (last != null) return last; | |
| 890 return cookie.name.toUpperCase() == _DART_SESSION_ID ? | |
| 891 cookie.value : null; | |
| 892 }); | |
| 893 if (sessionId != null) { | |
| 894 var sessionManager = _httpConnection._server._sessionManager; | |
| 895 _session = sessionManager.getSession(sessionId); | |
| 896 if (_session != null) { | |
| 897 _session._markSeen(); | |
| 898 } | |
| 899 } | |
| 900 } | |
| 901 | |
| 902 // Get parsed content length. | |
| 903 _contentLength = _httpConnection._httpParser.contentLength; | |
| 904 | |
| 905 // Prepare for receiving data. | |
| 906 _headers._mutable = false; | |
| 907 _buffer = new _BufferList(); | |
| 908 } | |
| 909 | |
| 910 void _onDataReceived(List<int> data) { | |
| 911 _buffer.add(data); | |
| 912 if (_inputStream != null) _inputStream._dataReceived(); | |
| 913 } | |
| 914 | |
| 915 void _onDataEnd() { | |
| 916 if (_inputStream != null) _inputStream._closeReceived(); | |
| 917 _dataEndCalled = true; | |
| 918 } | |
| 919 | |
| 920 // Escaped characters in uri are expected to have been parsed. | |
| 921 void _parseRequestUri(String uri) { | |
| 922 int position; | |
| 923 position = uri.indexOf("?", 0); | |
| 924 if (position == -1) { | |
| 925 _path = _HttpUtils.decodeUrlEncodedString(_uri); | |
| 926 _queryString = null; | |
| 927 _queryParameters = new Map(); | |
| 928 } else { | |
| 929 _path = _HttpUtils.decodeUrlEncodedString(_uri.substring(0, position)); | |
| 930 _queryString = _uri.substring(position + 1); | |
| 931 _queryParameters = _HttpUtils.splitQueryString(_queryString); | |
| 932 } | |
| 933 } | |
| 934 | |
| 935 // Delegate functions for the HttpInputStream implementation. | |
| 936 int _streamAvailable() { | |
| 937 return _buffer.length; | |
| 938 } | |
| 939 | |
| 940 List<int> _streamRead(int bytesToRead) { | |
| 941 return _buffer.readBytes(bytesToRead); | |
| 942 } | |
| 943 | |
| 944 int _streamReadInto(List<int> buffer, int offset, int len) { | |
| 945 List<int> data = _buffer.readBytes(len); | |
| 946 buffer.setRange(offset, data.length, data); | |
| 947 } | |
| 948 | |
| 949 void _streamSetErrorHandler(callback(e)) { | |
| 950 _streamErrorHandler = callback; | |
| 951 } | |
| 952 | |
| 953 String _method; | |
| 954 String _uri; | |
| 955 String _path; | |
| 956 String _queryString; | |
| 957 Map<String, String> _queryParameters; | |
| 958 _HttpInputStream _inputStream; | |
| 959 _BufferList _buffer; | |
| 960 bool _dataEndCalled = false; | |
| 961 Function _streamErrorHandler; | |
| 962 _HttpSession _session; | |
| 963 } | |
| 964 | |
| 965 | |
| 966 // HTTP response object for sending a HTTP response. | |
| 967 class _HttpResponse extends _HttpRequestResponseBase implements HttpResponse { | |
| 968 _HttpResponse(_HttpConnection httpConnection) | |
| 969 : super(httpConnection), | |
| 970 _statusCode = HttpStatus.OK; | |
| 971 | |
| 972 void set contentLength(int contentLength) { | |
| 973 if (_state >= HEADER_SENT) throw new HttpException("Header already sent"); | |
| 974 _contentLength = contentLength; | |
| 975 } | |
| 976 | |
| 977 int get statusCode => _statusCode; | |
| 978 void set statusCode(int statusCode) { | |
| 979 if (_outputStream != null) throw new HttpException("Header already sent"); | |
| 980 _statusCode = statusCode; | |
| 981 } | |
| 982 | |
| 983 String get reasonPhrase => _findReasonPhrase(_statusCode); | |
| 984 void set reasonPhrase(String reasonPhrase) { | |
| 985 if (_outputStream != null) throw new HttpException("Header already sent"); | |
| 986 _reasonPhrase = reasonPhrase; | |
| 987 } | |
| 988 | |
| 989 List<Cookie> get cookies { | |
| 990 if (_cookies == null) _cookies = new List<Cookie>(); | |
| 991 return _cookies; | |
| 992 } | |
| 993 | |
| 994 OutputStream get outputStream { | |
| 995 if (_state >= DONE) throw new HttpException("Response closed"); | |
| 996 if (_outputStream == null) { | |
| 997 _outputStream = new _HttpOutputStream(this); | |
| 998 } | |
| 999 return _outputStream; | |
| 1000 } | |
| 1001 | |
| 1002 DetachedSocket detachSocket() { | |
| 1003 if (_state >= DONE) throw new HttpException("Response closed"); | |
| 1004 // Ensure that headers are written. | |
| 1005 if (_state == START) { | |
| 1006 _writeHeader(); | |
| 1007 } | |
| 1008 _state = UPGRADED; | |
| 1009 // Ensure that any trailing data is written. | |
| 1010 _writeDone(); | |
| 1011 // Indicate to the connection that the response handling is done. | |
| 1012 return _httpConnection._detachSocket(); | |
| 1013 } | |
| 1014 | |
| 1015 void _responseEnd() { | |
| 1016 _ensureHeadersSent(); | |
| 1017 _state = DONE; | |
| 1018 // Stop tracking no pending write events. | |
| 1019 _httpConnection._onNoPendingWrites = null; | |
| 1020 // Ensure that any trailing data is written. | |
| 1021 _writeDone(); | |
| 1022 // Indicate to the connection that the response handling is done. | |
| 1023 _httpConnection._responseDone(); | |
| 1024 } | |
| 1025 | |
| 1026 // Delegate functions for the HttpOutputStream implementation. | |
| 1027 bool _streamWrite(List<int> buffer, bool copyBuffer) { | |
| 1028 if (_done) throw new HttpException("Response closed"); | |
| 1029 return _write(buffer, copyBuffer); | |
| 1030 } | |
| 1031 | |
| 1032 bool _streamWriteFrom(List<int> buffer, int offset, int len) { | |
| 1033 if (_done) throw new HttpException("Response closed"); | |
| 1034 return _writeList(buffer, offset, len); | |
| 1035 } | |
| 1036 | |
| 1037 void _streamFlush() { | |
| 1038 _httpConnection._flush(); | |
| 1039 } | |
| 1040 | |
| 1041 void _streamClose() { | |
| 1042 _responseEnd(); | |
| 1043 } | |
| 1044 | |
| 1045 void _streamSetNoPendingWriteHandler(callback()) { | |
| 1046 if (_state != DONE) { | |
| 1047 _httpConnection._onNoPendingWrites = callback; | |
| 1048 } | |
| 1049 } | |
| 1050 | |
| 1051 void _streamSetCloseHandler(callback()) { | |
| 1052 // TODO(sgjesse): Handle this. | |
| 1053 } | |
| 1054 | |
| 1055 void _streamSetErrorHandler(callback(e)) { | |
| 1056 _streamErrorHandler = callback; | |
| 1057 } | |
| 1058 | |
| 1059 String _findReasonPhrase(int statusCode) { | |
| 1060 if (_reasonPhrase != null) { | |
| 1061 return _reasonPhrase; | |
| 1062 } | |
| 1063 | |
| 1064 switch (statusCode) { | |
| 1065 case HttpStatus.CONTINUE: return "Continue"; | |
| 1066 case HttpStatus.SWITCHING_PROTOCOLS: return "Switching Protocols"; | |
| 1067 case HttpStatus.OK: return "OK"; | |
| 1068 case HttpStatus.CREATED: return "Created"; | |
| 1069 case HttpStatus.ACCEPTED: return "Accepted"; | |
| 1070 case HttpStatus.NON_AUTHORITATIVE_INFORMATION: | |
| 1071 return "Non-Authoritative Information"; | |
| 1072 case HttpStatus.NO_CONTENT: return "No Content"; | |
| 1073 case HttpStatus.RESET_CONTENT: return "Reset Content"; | |
| 1074 case HttpStatus.PARTIAL_CONTENT: return "Partial Content"; | |
| 1075 case HttpStatus.MULTIPLE_CHOICES: return "Multiple Choices"; | |
| 1076 case HttpStatus.MOVED_PERMANENTLY: return "Moved Permanently"; | |
| 1077 case HttpStatus.FOUND: return "Found"; | |
| 1078 case HttpStatus.SEE_OTHER: return "See Other"; | |
| 1079 case HttpStatus.NOT_MODIFIED: return "Not Modified"; | |
| 1080 case HttpStatus.USE_PROXY: return "Use Proxy"; | |
| 1081 case HttpStatus.TEMPORARY_REDIRECT: return "Temporary Redirect"; | |
| 1082 case HttpStatus.BAD_REQUEST: return "Bad Request"; | |
| 1083 case HttpStatus.UNAUTHORIZED: return "Unauthorized"; | |
| 1084 case HttpStatus.PAYMENT_REQUIRED: return "Payment Required"; | |
| 1085 case HttpStatus.FORBIDDEN: return "Forbidden"; | |
| 1086 case HttpStatus.NOT_FOUND: return "Not Found"; | |
| 1087 case HttpStatus.METHOD_NOT_ALLOWED: return "Method Not Allowed"; | |
| 1088 case HttpStatus.NOT_ACCEPTABLE: return "Not Acceptable"; | |
| 1089 case HttpStatus.PROXY_AUTHENTICATION_REQUIRED: | |
| 1090 return "Proxy Authentication Required"; | |
| 1091 case HttpStatus.REQUEST_TIMEOUT: return "Request Time-out"; | |
| 1092 case HttpStatus.CONFLICT: return "Conflict"; | |
| 1093 case HttpStatus.GONE: return "Gone"; | |
| 1094 case HttpStatus.LENGTH_REQUIRED: return "Length Required"; | |
| 1095 case HttpStatus.PRECONDITION_FAILED: return "Precondition Failed"; | |
| 1096 case HttpStatus.REQUEST_ENTITY_TOO_LARGE: | |
| 1097 return "Request Entity Too Large"; | |
| 1098 case HttpStatus.REQUEST_URI_TOO_LONG: return "Request-URI Too Large"; | |
| 1099 case HttpStatus.UNSUPPORTED_MEDIA_TYPE: return "Unsupported Media Type"; | |
| 1100 case HttpStatus.REQUESTED_RANGE_NOT_SATISFIABLE: | |
| 1101 return "Requested range not satisfiable"; | |
| 1102 case HttpStatus.EXPECTATION_FAILED: return "Expectation Failed"; | |
| 1103 case HttpStatus.INTERNAL_SERVER_ERROR: return "Internal Server Error"; | |
| 1104 case HttpStatus.NOT_IMPLEMENTED: return "Not Implemented"; | |
| 1105 case HttpStatus.BAD_GATEWAY: return "Bad Gateway"; | |
| 1106 case HttpStatus.SERVICE_UNAVAILABLE: return "Service Unavailable"; | |
| 1107 case HttpStatus.GATEWAY_TIMEOUT: return "Gateway Time-out"; | |
| 1108 case HttpStatus.HTTP_VERSION_NOT_SUPPORTED: | |
| 1109 return "Http Version not supported"; | |
| 1110 default: return "Status $statusCode"; | |
| 1111 } | |
| 1112 } | |
| 1113 | |
| 1114 bool _writeHeader() { | |
| 1115 List<int> data; | |
| 1116 | |
| 1117 // Write status line. | |
| 1118 if (_protocolVersion == "1.1") { | |
| 1119 _httpConnection._write(_Const.HTTP11); | |
| 1120 } else { | |
| 1121 _httpConnection._write(_Const.HTTP10); | |
| 1122 } | |
| 1123 _writeSP(); | |
| 1124 data = _statusCode.toString().charCodes; | |
| 1125 _httpConnection._write(data); | |
| 1126 _writeSP(); | |
| 1127 data = reasonPhrase.charCodes; | |
| 1128 _httpConnection._write(data); | |
| 1129 _writeCRLF(); | |
| 1130 | |
| 1131 // Determine the value of the "Transfer-Encoding" header based on | |
| 1132 // whether the content length is known. HTTP/1.0 does not support | |
| 1133 // chunked. | |
| 1134 if (_contentLength >= 0) { | |
| 1135 _headers.set(HttpHeaders.CONTENT_LENGTH, _contentLength.toString()); | |
| 1136 } else if (_contentLength < 0 && _protocolVersion == "1.1") { | |
| 1137 _headers.set(HttpHeaders.TRANSFER_ENCODING, "chunked"); | |
| 1138 } | |
| 1139 | |
| 1140 var session = _httpConnection._request._session; | |
| 1141 if (session != null && !session._destroyed) { | |
| 1142 // Make sure we only send the current session id. | |
| 1143 bool found = false; | |
| 1144 for (int i = 0; i < cookies.length; i++) { | |
| 1145 if (cookies[i].name.toUpperCase() == _DART_SESSION_ID) { | |
| 1146 cookie.value = session.id; | |
| 1147 found = true; | |
| 1148 break; | |
| 1149 } | |
| 1150 } | |
| 1151 if (!found) { | |
| 1152 cookies.add(new Cookie(_DART_SESSION_ID, session.id)); | |
| 1153 } | |
| 1154 } | |
| 1155 // Add all the cookies set to the headers. | |
| 1156 if (_cookies != null) { | |
| 1157 _cookies.forEach((cookie) { | |
| 1158 _headers.add("set-cookie", cookie); | |
| 1159 }); | |
| 1160 } | |
| 1161 | |
| 1162 // Write headers. | |
| 1163 bool allWritten = _writeHeaders(); | |
| 1164 _state = HEADER_SENT; | |
| 1165 return allWritten; | |
| 1166 } | |
| 1167 | |
| 1168 int _statusCode; // Response status code. | |
| 1169 String _reasonPhrase; // Response reason phrase. | |
| 1170 _HttpOutputStream _outputStream; | |
| 1171 Function _streamErrorHandler; | |
| 1172 } | |
| 1173 | |
| 1174 | |
| 1175 class _HttpInputStream extends _BaseDataInputStream implements InputStream { | |
| 1176 _HttpInputStream(_HttpRequestResponseBase this._requestOrResponse) { | |
| 1177 _checkScheduleCallbacks(); | |
| 1178 } | |
| 1179 | |
| 1180 int available() { | |
| 1181 return _requestOrResponse._streamAvailable(); | |
| 1182 } | |
| 1183 | |
| 1184 void pipe(OutputStream output, {bool close: true}) { | |
| 1185 _pipe(this, output, close: close); | |
| 1186 } | |
| 1187 | |
| 1188 List<int> _read(int bytesToRead) { | |
| 1189 List<int> result = _requestOrResponse._streamRead(bytesToRead); | |
| 1190 _checkScheduleCallbacks(); | |
| 1191 return result; | |
| 1192 } | |
| 1193 | |
| 1194 void set onError(void callback(e)) { | |
| 1195 _requestOrResponse._streamSetErrorHandler(callback); | |
| 1196 } | |
| 1197 | |
| 1198 int _readInto(List<int> buffer, int offset, int len) { | |
| 1199 int result = _requestOrResponse._streamReadInto(buffer, offset, len); | |
| 1200 _checkScheduleCallbacks(); | |
| 1201 return result; | |
| 1202 } | |
| 1203 | |
| 1204 void _close() { | |
| 1205 // TODO(sgjesse): Handle this. | |
| 1206 } | |
| 1207 | |
| 1208 void _dataReceived() { | |
| 1209 super._dataReceived(); | |
| 1210 } | |
| 1211 | |
| 1212 _HttpRequestResponseBase _requestOrResponse; | |
| 1213 } | |
| 1214 | |
| 1215 | |
| 1216 class _HttpOutputStream extends _BaseOutputStream implements OutputStream { | |
| 1217 _HttpOutputStream(_HttpRequestResponseBase this._requestOrResponse); | |
| 1218 | |
| 1219 bool write(List<int> buffer, [bool copyBuffer = true]) { | |
| 1220 return _requestOrResponse._streamWrite(buffer, copyBuffer); | |
| 1221 } | |
| 1222 | |
| 1223 bool writeFrom(List<int> buffer, [int offset = 0, int len]) { | |
| 1224 return _requestOrResponse._streamWriteFrom(buffer, offset, len); | |
| 1225 } | |
| 1226 | |
| 1227 void flush() { | |
| 1228 _requestOrResponse._streamFlush(); | |
| 1229 } | |
| 1230 | |
| 1231 void close() { | |
| 1232 _requestOrResponse._streamClose(); | |
| 1233 } | |
| 1234 | |
| 1235 bool get closed => _requestOrResponse._done; | |
| 1236 | |
| 1237 void destroy() { | |
| 1238 throw "Not implemented"; | |
| 1239 } | |
| 1240 | |
| 1241 void set onNoPendingWrites(void callback()) { | |
| 1242 _requestOrResponse._streamSetNoPendingWriteHandler(callback); | |
| 1243 } | |
| 1244 | |
| 1245 void set onClosed(void callback()) { | |
| 1246 _requestOrResponse._streamSetCloseHandler(callback); | |
| 1247 } | |
| 1248 | |
| 1249 void set onError(void callback(e)) { | |
| 1250 _requestOrResponse._streamSetErrorHandler(callback); | |
| 1251 } | |
| 1252 | |
| 1253 _HttpRequestResponseBase _requestOrResponse; | |
| 1254 } | |
| 1255 | |
| 1256 | |
| 1257 class _HttpConnectionBase { | |
| 1258 _HttpConnectionBase() : _httpParser = new _HttpParser(), | |
| 1259 hashCode = _nextHashCode { | |
| 1260 _nextHashCode = (_nextHashCode + 1) & 0xFFFFFFF; | |
| 1261 } | |
| 1262 | |
| 1263 void _connectionEstablished(Socket socket) { | |
| 1264 _socket = socket; | |
| 1265 // Register handler for socket events. | |
| 1266 _socket.onData = _onData; | |
| 1267 _socket.onClosed = _onClosed; | |
| 1268 _socket.onError = _onError; | |
| 1269 // Ignore errors in the socket output stream as this is getting | |
| 1270 // the same errors as the socket itself. | |
| 1271 _socket.outputStream.onError = (e) => null; | |
| 1272 } | |
| 1273 | |
| 1274 bool _write(List<int> data, [bool copyBuffer = false]) { | |
| 1275 if (!_error && !_closing) { | |
| 1276 return _socket.outputStream.write(data, copyBuffer); | |
| 1277 } | |
| 1278 } | |
| 1279 | |
| 1280 bool _writeFrom(List<int> buffer, [int offset, int len]) { | |
| 1281 if (!_error && !_closing) { | |
| 1282 return _socket.outputStream.writeFrom(buffer, offset, len); | |
| 1283 } | |
| 1284 } | |
| 1285 | |
| 1286 bool _flush() { | |
| 1287 _socket.outputStream.flush(); | |
| 1288 } | |
| 1289 | |
| 1290 bool _close() { | |
| 1291 _closing = true; | |
| 1292 _socket.outputStream.close(); | |
| 1293 } | |
| 1294 | |
| 1295 bool _destroy() { | |
| 1296 _closing = true; | |
| 1297 _socket.close(); | |
| 1298 } | |
| 1299 | |
| 1300 void _onData() { | |
| 1301 int available = _socket.available(); | |
| 1302 if (available == 0) { | |
| 1303 return; | |
| 1304 } | |
| 1305 | |
| 1306 List<int> buffer = new Uint8List(available); | |
| 1307 int bytesRead = _socket.readList(buffer, 0, available); | |
| 1308 if (bytesRead > 0) { | |
| 1309 int parsed = _httpParser.writeList(buffer, 0, bytesRead); | |
| 1310 if (!_httpParser.upgrade) { | |
| 1311 if (parsed != bytesRead) { | |
| 1312 if (_socket != null) { | |
| 1313 // TODO(sgjesse): Error handling. | |
| 1314 _destroy(); | |
| 1315 } | |
| 1316 } | |
| 1317 } | |
| 1318 } | |
| 1319 } | |
| 1320 | |
| 1321 void _onClosed() { | |
| 1322 _closing = true; | |
| 1323 _onConnectionClosed(null); | |
| 1324 } | |
| 1325 | |
| 1326 void _onError(e) { | |
| 1327 // If an error occurs, make sure to close the socket if one is associated. | |
| 1328 _error = true; | |
| 1329 if (_socket != null) { | |
| 1330 _socket.close(); | |
| 1331 } | |
| 1332 _onConnectionClosed(e); | |
| 1333 } | |
| 1334 | |
| 1335 DetachedSocket _detachSocket() { | |
| 1336 _socket.onData = null; | |
| 1337 _socket.onClosed = null; | |
| 1338 _socket.onError = null; | |
| 1339 _socket.outputStream.onNoPendingWrites = null; | |
| 1340 Socket socket = _socket; | |
| 1341 _socket = null; | |
| 1342 if (onDetach != null) onDetach(); | |
| 1343 return new _DetachedSocket(socket, _httpParser.unparsedData); | |
| 1344 } | |
| 1345 | |
| 1346 HttpConnectionInfo get connectionInfo { | |
| 1347 if (_socket == null || _closing || _error) return null; | |
| 1348 try { | |
| 1349 _HttpConnectionInfo info = new _HttpConnectionInfo(); | |
| 1350 info.remoteHost = _socket.remoteHost; | |
| 1351 info.remotePort = _socket.remotePort; | |
| 1352 info.localPort = _socket.port; | |
| 1353 return info; | |
| 1354 } catch (e) { } | |
| 1355 return null; | |
| 1356 } | |
| 1357 | |
| 1358 abstract void _onConnectionClosed(e); | |
| 1359 abstract void _responseDone(); | |
| 1360 | |
| 1361 void set _onNoPendingWrites(void callback()) { | |
| 1362 if (!_error) { | |
| 1363 _socket.outputStream.onNoPendingWrites = callback; | |
| 1364 } | |
| 1365 } | |
| 1366 | |
| 1367 Socket _socket; | |
| 1368 bool _closing = false; // Is the socket closed by the client? | |
| 1369 bool _error = false; // Is the socket closed due to an error? | |
| 1370 _HttpParser _httpParser; | |
| 1371 | |
| 1372 Function onDetach; | |
| 1373 | |
| 1374 // Hash code for HTTP connection. Currently this is just a counter. | |
| 1375 final int hashCode; | |
| 1376 static int _nextHashCode = 0; | |
| 1377 } | |
| 1378 | |
| 1379 | |
| 1380 // HTTP server connection over a socket. | |
| 1381 class _HttpConnection extends _HttpConnectionBase { | |
| 1382 _HttpConnection(HttpServer this._server) { | |
| 1383 // Register HTTP parser callbacks. | |
| 1384 _httpParser.requestStart = | |
| 1385 (method, uri, version) => _onRequestStart(method, uri, version); | |
| 1386 _httpParser.responseStart = | |
| 1387 (statusCode, reasonPhrase, version) => | |
| 1388 _onResponseStart(statusCode, reasonPhrase, version); | |
| 1389 _httpParser.headerReceived = | |
| 1390 (name, value) => _onHeaderReceived(name, value); | |
| 1391 _httpParser.headersComplete = () => _onHeadersComplete(); | |
| 1392 _httpParser.dataReceived = (data) => _onDataReceived(data); | |
| 1393 _httpParser.dataEnd = (close) => _onDataEnd(close); | |
| 1394 _httpParser.error = (e) => _onError(e); | |
| 1395 } | |
| 1396 | |
| 1397 void _onConnectionClosed(e) { | |
| 1398 // Don't report errors when HTTP parser is in idle state. Clients | |
| 1399 // can close the connection and cause a connection reset by peer | |
| 1400 // error which is OK. | |
| 1401 if (e != null && onError != null && !_httpParser.isIdle) { | |
| 1402 onError(e); | |
| 1403 // Propagate the error to the streams. | |
| 1404 if (_request != null && _request._streamErrorHandler != null) { | |
| 1405 _request._streamErrorHandler(e); | |
| 1406 } | |
| 1407 if (_response != null && _response._streamErrorHandler != null) { | |
| 1408 _response._streamErrorHandler(e); | |
| 1409 } | |
| 1410 } | |
| 1411 | |
| 1412 // If currently not processing any request close the socket when | |
| 1413 // we are done writing the response. | |
| 1414 if (_httpParser.isIdle) { | |
| 1415 _socket.outputStream.onClosed = () { | |
| 1416 _destroy(); | |
| 1417 if (onClosed != null && e == null) { | |
| 1418 // Don't call onClosed if onError has been called. | |
| 1419 onClosed(); | |
| 1420 } | |
| 1421 }; | |
| 1422 // If the client closes and we are done writing the response | |
| 1423 // the connection should be closed. | |
| 1424 if (_response == null) _close(); | |
| 1425 return; | |
| 1426 } | |
| 1427 | |
| 1428 // Processing a request. | |
| 1429 if (e == null) { | |
| 1430 // Indicate connection close to the HTTP parser. | |
| 1431 _httpParser.connectionClosed(); | |
| 1432 } | |
| 1433 } | |
| 1434 | |
| 1435 void _onRequestStart(String method, String uri, String version) { | |
| 1436 // Create new request and response objects for this request. | |
| 1437 _request = new _HttpRequest(this); | |
| 1438 _response = new _HttpResponse(this); | |
| 1439 _request._onRequestStart(method, uri, version); | |
| 1440 _request._protocolVersion = version; | |
| 1441 _response._protocolVersion = version; | |
| 1442 _response._headResponse = method == "HEAD"; | |
| 1443 } | |
| 1444 | |
| 1445 void _onResponseStart(int statusCode, String reasonPhrase, String version) { | |
| 1446 // TODO(sgjesse): Error handling. | |
| 1447 } | |
| 1448 | |
| 1449 void _onHeaderReceived(String name, String value) { | |
| 1450 _request._onHeaderReceived(name, value); | |
| 1451 } | |
| 1452 | |
| 1453 void _onHeadersComplete() { | |
| 1454 _request._onHeadersComplete(); | |
| 1455 _response.persistentConnection = _httpParser.persistentConnection; | |
| 1456 if (onRequestReceived != null) { | |
| 1457 onRequestReceived(_request, _response); | |
| 1458 } | |
| 1459 } | |
| 1460 | |
| 1461 void _onDataReceived(List<int> data) { | |
| 1462 _request._onDataReceived(data); | |
| 1463 } | |
| 1464 | |
| 1465 void _onDataEnd(bool close) { | |
| 1466 _request._onDataEnd(); | |
| 1467 } | |
| 1468 | |
| 1469 void _responseDone() { | |
| 1470 // If the connection is closing then close the output stream to | |
| 1471 // fully close the socket. | |
| 1472 if (_closing) { | |
| 1473 _socket.outputStream.onClosed = () { | |
| 1474 _socket.close(); | |
| 1475 }; | |
| 1476 } | |
| 1477 _response = null; | |
| 1478 } | |
| 1479 | |
| 1480 HttpServer _server; | |
| 1481 HttpRequest _request; | |
| 1482 HttpResponse _response; | |
| 1483 | |
| 1484 // Callbacks. | |
| 1485 Function onRequestReceived; | |
| 1486 Function onClosed; | |
| 1487 Function onError; | |
| 1488 } | |
| 1489 | |
| 1490 | |
| 1491 class _RequestHandlerRegistration { | |
| 1492 _RequestHandlerRegistration(Function this._matcher, Function this._handler); | |
| 1493 Function _matcher; | |
| 1494 Function _handler; | |
| 1495 } | |
| 1496 | |
| 1497 // HTTP server waiting for socket connections. The connections are | |
| 1498 // managed by the server and as requests are received the request. | |
| 1499 class _HttpServer implements HttpServer { | |
| 1500 _HttpServer() : _connections = new Set<_HttpConnection>(), | |
| 1501 _handlers = new List<_RequestHandlerRegistration>(); | |
| 1502 | |
| 1503 void listen(String host, int port, {int backlog: 128}) { | |
| 1504 listenOn(new ServerSocket(host, port, backlog)); | |
| 1505 _closeServer = true; | |
| 1506 } | |
| 1507 | |
| 1508 void listenOn(ServerSocket serverSocket) { | |
| 1509 void onConnection(Socket socket) { | |
| 1510 // Accept the client connection. | |
| 1511 _HttpConnection connection = new _HttpConnection(this); | |
| 1512 connection._connectionEstablished(socket); | |
| 1513 _connections.add(connection); | |
| 1514 connection.onRequestReceived = _handleRequest; | |
| 1515 connection.onClosed = () => _connections.remove(connection); | |
| 1516 connection.onDetach = () => _connections.remove(connection); | |
| 1517 connection.onError = (e) { | |
| 1518 _connections.remove(connection); | |
| 1519 if (_onError != null) { | |
| 1520 _onError(e); | |
| 1521 } else { | |
| 1522 throw(e); | |
| 1523 } | |
| 1524 }; | |
| 1525 } | |
| 1526 serverSocket.onConnection = onConnection; | |
| 1527 _server = serverSocket; | |
| 1528 _closeServer = false; | |
| 1529 } | |
| 1530 | |
| 1531 addRequestHandler(bool matcher(HttpRequest request), | |
| 1532 void handler(HttpRequest request, HttpResponse response)) { | |
| 1533 _handlers.add(new _RequestHandlerRegistration(matcher, handler)); | |
| 1534 } | |
| 1535 | |
| 1536 void set defaultRequestHandler( | |
| 1537 void handler(HttpRequest request, HttpResponse response)) { | |
| 1538 _defaultHandler = handler; | |
| 1539 } | |
| 1540 | |
| 1541 void close() { | |
| 1542 if (_sessionManagerInstance != null) { | |
| 1543 _sessionManagerInstance.close(); | |
| 1544 _sessionManagerInstance = null; | |
| 1545 } | |
| 1546 if (_server != null && _closeServer) { | |
| 1547 _server.close(); | |
| 1548 } | |
| 1549 _server = null; | |
| 1550 for (_HttpConnection connection in _connections) { | |
| 1551 connection._destroy(); | |
| 1552 } | |
| 1553 _connections.clear(); | |
| 1554 } | |
| 1555 | |
| 1556 int get port { | |
| 1557 if (_server === null) { | |
| 1558 throw new HttpException("The HttpServer is not listening on a port."); | |
| 1559 } | |
| 1560 return _server.port; | |
| 1561 } | |
| 1562 | |
| 1563 void set onError(void callback(e)) { | |
| 1564 _onError = callback; | |
| 1565 } | |
| 1566 | |
| 1567 int set sessionTimeout(int timeout) { | |
| 1568 _sessionManager.sessionTimeout = timeout; | |
| 1569 } | |
| 1570 | |
| 1571 void _handleRequest(HttpRequest request, HttpResponse response) { | |
| 1572 for (int i = 0; i < _handlers.length; i++) { | |
| 1573 if (_handlers[i]._matcher(request)) { | |
| 1574 Function handler = _handlers[i]._handler; | |
| 1575 try { | |
| 1576 handler(request, response); | |
| 1577 } catch (e) { | |
| 1578 if (_onError != null) { | |
| 1579 _onError(e); | |
| 1580 } else { | |
| 1581 throw e; | |
| 1582 } | |
| 1583 } | |
| 1584 return; | |
| 1585 } | |
| 1586 } | |
| 1587 | |
| 1588 if (_defaultHandler != null) { | |
| 1589 _defaultHandler(request, response); | |
| 1590 } else { | |
| 1591 response.statusCode = HttpStatus.NOT_FOUND; | |
| 1592 response.contentLength = 0; | |
| 1593 response.outputStream.close(); | |
| 1594 } | |
| 1595 } | |
| 1596 | |
| 1597 _HttpSessionManager get _sessionManager { | |
| 1598 // Lazy init. | |
| 1599 if (_sessionManagerInstance == null) { | |
| 1600 _sessionManagerInstance = new _HttpSessionManager(); | |
| 1601 } | |
| 1602 return _sessionManagerInstance; | |
| 1603 } | |
| 1604 | |
| 1605 | |
| 1606 ServerSocket _server; // The server listen socket. | |
| 1607 bool _closeServer = false; | |
| 1608 Set<_HttpConnection> _connections; // Set of currently connected clients. | |
| 1609 List<_RequestHandlerRegistration> _handlers; | |
| 1610 Object _defaultHandler; | |
| 1611 Function _onError; | |
| 1612 _HttpSessionManager _sessionManagerInstance; | |
| 1613 } | |
| 1614 | |
| 1615 | |
| 1616 class _HttpClientRequest | |
| 1617 extends _HttpRequestResponseBase implements HttpClientRequest { | |
| 1618 _HttpClientRequest(String this._method, | |
| 1619 Uri this._uri, | |
| 1620 _HttpClientConnection connection) | |
| 1621 : super(connection) { | |
| 1622 _connection = connection; | |
| 1623 // Default GET and HEAD requests to have no content. | |
| 1624 if (_method == "GET" || _method == "HEAD") { | |
| 1625 _contentLength = 0; | |
| 1626 } | |
| 1627 } | |
| 1628 | |
| 1629 void set contentLength(int contentLength) { | |
| 1630 if (_state >= HEADER_SENT) throw new HttpException("Header already sent"); | |
| 1631 _contentLength = contentLength; | |
| 1632 } | |
| 1633 | |
| 1634 List<Cookie> get cookies { | |
| 1635 if (_cookies == null) _cookies = new List<Cookie>(); | |
| 1636 return _cookies; | |
| 1637 } | |
| 1638 | |
| 1639 OutputStream get outputStream { | |
| 1640 if (_done) throw new HttpException("Request closed"); | |
| 1641 if (_outputStream == null) { | |
| 1642 _outputStream = new _HttpOutputStream(this); | |
| 1643 } | |
| 1644 return _outputStream; | |
| 1645 } | |
| 1646 | |
| 1647 // Delegate functions for the HttpOutputStream implementation. | |
| 1648 bool _streamWrite(List<int> buffer, bool copyBuffer) { | |
| 1649 if (_done) throw new HttpException("Request closed"); | |
| 1650 return _write(buffer, copyBuffer); | |
| 1651 } | |
| 1652 | |
| 1653 bool _streamWriteFrom(List<int> buffer, int offset, int len) { | |
| 1654 if (_done) throw new HttpException("Request closed"); | |
| 1655 return _writeList(buffer, offset, len); | |
| 1656 } | |
| 1657 | |
| 1658 void _streamFlush() { | |
| 1659 _httpConnection._flush(); | |
| 1660 } | |
| 1661 | |
| 1662 void _streamClose() { | |
| 1663 _ensureHeadersSent(); | |
| 1664 _state = DONE; | |
| 1665 // Stop tracking no pending write events. | |
| 1666 _httpConnection._onNoPendingWrites = null; | |
| 1667 // Ensure that any trailing data is written. | |
| 1668 _writeDone(); | |
| 1669 } | |
| 1670 | |
| 1671 void _streamSetNoPendingWriteHandler(callback()) { | |
| 1672 if (_state != DONE) { | |
| 1673 _httpConnection._onNoPendingWrites = callback; | |
| 1674 } | |
| 1675 } | |
| 1676 | |
| 1677 void _streamSetCloseHandler(callback()) { | |
| 1678 // TODO(sgjesse): Handle this. | |
| 1679 } | |
| 1680 | |
| 1681 void _streamSetErrorHandler(callback(e)) { | |
| 1682 _streamErrorHandler = callback; | |
| 1683 } | |
| 1684 | |
| 1685 void _writeHeader() { | |
| 1686 List<int> data; | |
| 1687 | |
| 1688 // Write request line. | |
| 1689 data = _method.toString().charCodes; | |
| 1690 _httpConnection._write(data); | |
| 1691 _writeSP(); | |
| 1692 // Send the path for direct connections and the whole URL for | |
| 1693 // proxy connections. | |
| 1694 if (!_connection._usingProxy) { | |
| 1695 String path = _uri.path; | |
| 1696 if (path.length == 0) path = "/"; | |
| 1697 if (_uri.query != "") { | |
| 1698 if (_uri.fragment != "") { | |
| 1699 path = "${path}?${_uri.query}#${_uri.fragment}"; | |
| 1700 } else { | |
| 1701 path = "${path}?${_uri.query}"; | |
| 1702 } | |
| 1703 } | |
| 1704 data = path.charCodes; | |
| 1705 } else { | |
| 1706 data = _uri.toString().charCodes; | |
| 1707 } | |
| 1708 _httpConnection._write(data); | |
| 1709 _writeSP(); | |
| 1710 _httpConnection._write(_Const.HTTP11); | |
| 1711 _writeCRLF(); | |
| 1712 | |
| 1713 // Determine the value of the "Transfer-Encoding" header based on | |
| 1714 // whether the content length is known. If there is no content | |
| 1715 // neither "Content-Length" nor "Transfer-Encoding" is set. | |
| 1716 if (_contentLength > 0) { | |
| 1717 _headers.set(HttpHeaders.CONTENT_LENGTH, _contentLength.toString()); | |
| 1718 } else if (_contentLength < 0) { | |
| 1719 _headers.set(HttpHeaders.TRANSFER_ENCODING, "chunked"); | |
| 1720 } | |
| 1721 | |
| 1722 // Add the cookies to the headers. | |
| 1723 if (_cookies != null) { | |
| 1724 StringBuffer sb = new StringBuffer(); | |
| 1725 for (int i = 0; i < _cookies.length; i++) { | |
| 1726 if (i > 0) sb.add("; "); | |
| 1727 sb.add(_cookies[i].name); | |
| 1728 sb.add("="); | |
| 1729 sb.add(_cookies[i].value); | |
| 1730 } | |
| 1731 _headers.add("cookie", sb.toString()); | |
| 1732 } | |
| 1733 | |
| 1734 // Write headers. | |
| 1735 _writeHeaders(); | |
| 1736 _state = HEADER_SENT; | |
| 1737 } | |
| 1738 | |
| 1739 String _method; | |
| 1740 Uri _uri; | |
| 1741 _HttpClientConnection _connection; | |
| 1742 _HttpOutputStream _outputStream; | |
| 1743 Function _streamErrorHandler; | |
| 1744 } | |
| 1745 | |
| 1746 | |
| 1747 class _HttpClientResponse | |
| 1748 extends _HttpRequestResponseBase implements HttpClientResponse { | |
| 1749 _HttpClientResponse(_HttpClientConnection connection) | |
| 1750 : super(connection) { | |
| 1751 _connection = connection; | |
| 1752 } | |
| 1753 | |
| 1754 int get statusCode => _statusCode; | |
| 1755 String get reasonPhrase => _reasonPhrase; | |
| 1756 | |
| 1757 bool get isRedirect { | |
| 1758 return statusCode == HttpStatus.MOVED_PERMANENTLY || | |
| 1759 statusCode == HttpStatus.FOUND || | |
| 1760 statusCode == HttpStatus.SEE_OTHER || | |
| 1761 statusCode == HttpStatus.TEMPORARY_REDIRECT; | |
| 1762 } | |
| 1763 | |
| 1764 List<Cookie> get cookies { | |
| 1765 if (_cookies != null) return _cookies; | |
| 1766 _cookies = new List<Cookie>(); | |
| 1767 List<String> values = _headers["set-cookie"]; | |
| 1768 if (values != null) { | |
| 1769 values.forEach((value) { | |
| 1770 _cookies.add(new Cookie.fromSetCookieValue(value)); | |
| 1771 }); | |
| 1772 } | |
| 1773 return _cookies; | |
| 1774 } | |
| 1775 | |
| 1776 InputStream get inputStream { | |
| 1777 if (_inputStream == null) { | |
| 1778 _inputStream = new _HttpInputStream(this); | |
| 1779 _inputStream._streamMarkedClosed = _dataEndCalled; | |
| 1780 } | |
| 1781 return _inputStream; | |
| 1782 } | |
| 1783 | |
| 1784 void _onRequestStart(String method, String uri, String version) { | |
| 1785 // TODO(sgjesse): Error handling | |
| 1786 } | |
| 1787 | |
| 1788 void _onResponseStart(int statusCode, String reasonPhrase, String version) { | |
| 1789 _statusCode = statusCode; | |
| 1790 _reasonPhrase = reasonPhrase; | |
| 1791 } | |
| 1792 | |
| 1793 void _onHeaderReceived(String name, String value) { | |
| 1794 _headers.add(name, value); | |
| 1795 } | |
| 1796 | |
| 1797 void _handleUnauthorized() { | |
| 1798 | |
| 1799 void retryRequest(_Credentials cr) { | |
| 1800 if (cr != null) { | |
| 1801 if (cr.scheme == _AuthenticationScheme.DIGEST) { | |
| 1802 cr.nonce = header.parameters["nonce"]; | |
| 1803 cr.algorithm = header.parameters["algorithm"]; | |
| 1804 cr.qop = header.parameters["qop"]; | |
| 1805 } | |
| 1806 // Drain body and retry. | |
| 1807 // TODO(sjgesse): Support digest. | |
| 1808 if (cr.scheme == _AuthenticationScheme.BASIC) { | |
| 1809 inputStream.onData = inputStream.read; | |
| 1810 inputStream.onClosed = _connection.retry; | |
| 1811 return; | |
| 1812 } | |
| 1813 } | |
| 1814 | |
| 1815 // Fall through to here to perform normal response handling if | |
| 1816 // there is no sensible authorization handling. | |
| 1817 if (_connection._onResponse != null) { | |
| 1818 _connection._onResponse(this); | |
| 1819 } | |
| 1820 } | |
| 1821 | |
| 1822 // Only try to authenticate if there is a challenge in the response. | |
| 1823 List<String> challenge = _headers[HttpHeaders.WWW_AUTHENTICATE]; | |
| 1824 if (challenge != null && challenge.length == 1) { | |
| 1825 _HeaderValue header = | |
| 1826 new _HeaderValue.fromString(challenge[0], parameterSeparator: ","); | |
| 1827 _AuthenticationScheme scheme = | |
| 1828 new _AuthenticationScheme.fromString(header.value); | |
| 1829 String realm = header.parameters["realm"]; | |
| 1830 | |
| 1831 // See if any credentials are available. | |
| 1832 _Credentials cr = | |
| 1833 _connection._client._findCredentials( | |
| 1834 _connection._request._uri, scheme); | |
| 1835 | |
| 1836 // Ask for more credentials if none found or the one found has | |
| 1837 // already been used. If it has already been used it must now be | |
| 1838 // invalid and is removed. | |
| 1839 if (cr == null || cr.used) { | |
| 1840 if (cr != null) { | |
| 1841 _connection._client._removeCredentials(cr); | |
| 1842 } | |
| 1843 cr = null; | |
| 1844 if (_connection._client._authenticate != null) { | |
| 1845 Future authComplete = | |
| 1846 _connection._client._authenticate( | |
| 1847 _connection._request._uri, scheme.toString(), realm); | |
| 1848 authComplete.then((credsAvailable) { | |
| 1849 if (credsAvailable) { | |
| 1850 cr = _connection._client._findCredentials( | |
| 1851 _connection._request._uri, scheme); | |
| 1852 retryRequest(cr); | |
| 1853 } else { | |
| 1854 if (_connection._onResponse != null) { | |
| 1855 _connection._onResponse(this); | |
| 1856 } | |
| 1857 } | |
| 1858 }); | |
| 1859 return; | |
| 1860 } | |
| 1861 } else { | |
| 1862 // If credentials found prepare for retrying the request. | |
| 1863 retryRequest(cr); | |
| 1864 return; | |
| 1865 } | |
| 1866 } | |
| 1867 | |
| 1868 // Fall through to here to perform normal response handling if | |
| 1869 // there is no sensible authorization handling. | |
| 1870 if (_connection._onResponse != null) { | |
| 1871 _connection._onResponse(this); | |
| 1872 } | |
| 1873 } | |
| 1874 | |
| 1875 void _onHeadersComplete() { | |
| 1876 // Get parsed content length. | |
| 1877 _contentLength = _httpConnection._httpParser.contentLength; | |
| 1878 | |
| 1879 // Prepare for receiving data. | |
| 1880 _headers._mutable = false; | |
| 1881 _buffer = new _BufferList(); | |
| 1882 | |
| 1883 if (isRedirect && _connection.followRedirects) { | |
| 1884 if (_connection._redirects == null || | |
| 1885 _connection._redirects.length < _connection.maxRedirects) { | |
| 1886 // Check the location header. | |
| 1887 List<String> location = headers[HttpHeaders.LOCATION]; | |
| 1888 if (location == null || location.length > 1) { | |
| 1889 throw new RedirectException("Invalid redirect", | |
| 1890 _connection._redirects); | |
| 1891 } | |
| 1892 // Check for redirect loop | |
| 1893 if (_connection._redirects != null) { | |
| 1894 Uri redirectUrl = new Uri.fromString(location[0]); | |
| 1895 for (int i = 0; i < _connection._redirects.length; i++) { | |
| 1896 if (_connection._redirects[i].location.toString() == | |
| 1897 redirectUrl.toString()) { | |
| 1898 throw new RedirectLoopException(_connection._redirects); | |
| 1899 } | |
| 1900 } | |
| 1901 } | |
| 1902 // Drain body and redirect. | |
| 1903 inputStream.onData = inputStream.read; | |
| 1904 inputStream.onClosed = _connection.redirect; | |
| 1905 } else { | |
| 1906 throw new RedirectLimitExceededException(_connection._redirects); | |
| 1907 } | |
| 1908 } else if (statusCode == HttpStatus.UNAUTHORIZED) { | |
| 1909 _handleUnauthorized(); | |
| 1910 } else if (_connection._onResponse != null) { | |
| 1911 _connection._onResponse(this); | |
| 1912 } | |
| 1913 } | |
| 1914 | |
| 1915 void _onDataReceived(List<int> data) { | |
| 1916 _buffer.add(data); | |
| 1917 if (_inputStream != null) _inputStream._dataReceived(); | |
| 1918 } | |
| 1919 | |
| 1920 void _onDataEnd() { | |
| 1921 _connection._responseDone(); | |
| 1922 if (_inputStream != null) _inputStream._closeReceived(); | |
| 1923 _dataEndCalled = true; | |
| 1924 } | |
| 1925 | |
| 1926 // Delegate functions for the HttpInputStream implementation. | |
| 1927 int _streamAvailable() { | |
| 1928 return _buffer.length; | |
| 1929 } | |
| 1930 | |
| 1931 List<int> _streamRead(int bytesToRead) { | |
| 1932 return _buffer.readBytes(bytesToRead); | |
| 1933 } | |
| 1934 | |
| 1935 int _streamReadInto(List<int> buffer, int offset, int len) { | |
| 1936 List<int> data = _buffer.readBytes(len); | |
| 1937 buffer.setRange(offset, data.length, data); | |
| 1938 return data.length; | |
| 1939 } | |
| 1940 | |
| 1941 void _streamSetErrorHandler(callback(e)) { | |
| 1942 _streamErrorHandler = callback; | |
| 1943 } | |
| 1944 | |
| 1945 int _statusCode; | |
| 1946 String _reasonPhrase; | |
| 1947 | |
| 1948 _HttpClientConnection _connection; | |
| 1949 _HttpInputStream _inputStream; | |
| 1950 _BufferList _buffer; | |
| 1951 bool _dataEndCalled = false; | |
| 1952 | |
| 1953 Function _streamErrorHandler; | |
| 1954 } | |
| 1955 | |
| 1956 | |
| 1957 class _HttpClientConnection | |
| 1958 extends _HttpConnectionBase implements HttpClientConnection { | |
| 1959 _HttpClientConnection(_HttpClient this._client); | |
| 1960 | |
| 1961 void _connectionEstablished(_SocketConnection socketConn) { | |
| 1962 super._connectionEstablished(socketConn._socket); | |
| 1963 _socketConn = socketConn; | |
| 1964 // Register HTTP parser callbacks. | |
| 1965 _httpParser.requestStart = | |
| 1966 (method, uri, version) => _onRequestStart(method, uri, version); | |
| 1967 _httpParser.responseStart = | |
| 1968 (statusCode, reasonPhrase, version) => | |
| 1969 _onResponseStart(statusCode, reasonPhrase, version); | |
| 1970 _httpParser.headerReceived = | |
| 1971 (name, value) => _onHeaderReceived(name, value); | |
| 1972 _httpParser.headersComplete = () => _onHeadersComplete(); | |
| 1973 _httpParser.dataReceived = (data) => _onDataReceived(data); | |
| 1974 _httpParser.dataEnd = (closed) => _onDataEnd(closed); | |
| 1975 _httpParser.error = (e) => _onError(e); | |
| 1976 } | |
| 1977 | |
| 1978 void _responseDone() { | |
| 1979 if (_closing) { | |
| 1980 if (_socket != null) { | |
| 1981 _socket.close(); | |
| 1982 } | |
| 1983 } else { | |
| 1984 _client._returnSocketConnection(_socketConn); | |
| 1985 } | |
| 1986 _socket = null; | |
| 1987 _socketConn = null; | |
| 1988 } | |
| 1989 | |
| 1990 HttpClientRequest open(String method, Uri uri) { | |
| 1991 _method = method; | |
| 1992 // Tell the HTTP parser the method it is expecting a response to. | |
| 1993 _httpParser.responseToMethod = method; | |
| 1994 _request = new _HttpClientRequest(method, uri, this); | |
| 1995 _response = new _HttpClientResponse(this); | |
| 1996 return _request; | |
| 1997 } | |
| 1998 | |
| 1999 DetachedSocket detachSocket() { | |
| 2000 return _detachSocket(); | |
| 2001 } | |
| 2002 | |
| 2003 void _onConnectionClosed(e) { | |
| 2004 // Socket is closed either due to an error or due to normal socket close. | |
| 2005 if (e != null) { | |
| 2006 if (_onErrorCallback != null) { | |
| 2007 _onErrorCallback(e); | |
| 2008 } else { | |
| 2009 throw e; | |
| 2010 } | |
| 2011 } | |
| 2012 _closing = true; | |
| 2013 if (e != null) { | |
| 2014 // Propagate the error to the streams. | |
| 2015 if (_response != null && _response._streamErrorHandler != null) { | |
| 2016 _response._streamErrorHandler(e); | |
| 2017 } | |
| 2018 _responseDone(); | |
| 2019 } else { | |
| 2020 // If there was no socket error the socket was closed | |
| 2021 // normally. Indicate closing to the HTTP Parser as there might | |
| 2022 // still be an HTTP error. | |
| 2023 _httpParser.connectionClosed(); | |
| 2024 } | |
| 2025 } | |
| 2026 | |
| 2027 void _onRequestStart(String method, String uri, String version) { | |
| 2028 // TODO(sgjesse): Error handling. | |
| 2029 } | |
| 2030 | |
| 2031 void _onResponseStart(int statusCode, String reasonPhrase, String version) { | |
| 2032 _response._onResponseStart(statusCode, reasonPhrase, version); | |
| 2033 } | |
| 2034 | |
| 2035 void _onHeaderReceived(String name, String value) { | |
| 2036 _response._onHeaderReceived(name, value); | |
| 2037 } | |
| 2038 | |
| 2039 void _onHeadersComplete() { | |
| 2040 _response._onHeadersComplete(); | |
| 2041 } | |
| 2042 | |
| 2043 void _onDataReceived(List<int> data) { | |
| 2044 _response._onDataReceived(data); | |
| 2045 } | |
| 2046 | |
| 2047 void _onDataEnd(bool close) { | |
| 2048 if (close) _closing = true; | |
| 2049 _response._onDataEnd(); | |
| 2050 } | |
| 2051 | |
| 2052 void set onRequest(void handler(HttpClientRequest request)) { | |
| 2053 _onRequest = handler; | |
| 2054 } | |
| 2055 | |
| 2056 void set onResponse(void handler(HttpClientResponse response)) { | |
| 2057 _onResponse = handler; | |
| 2058 } | |
| 2059 | |
| 2060 void set onError(void callback(e)) { | |
| 2061 _onErrorCallback = callback; | |
| 2062 } | |
| 2063 | |
| 2064 void retry() { | |
| 2065 if (_socketConn != null) { | |
| 2066 throw new HttpException("Cannot retry with body data pending"); | |
| 2067 } | |
| 2068 // Retry the URL using the same connection instance. | |
| 2069 _client._openUrl(_method, _request._uri, this); | |
| 2070 } | |
| 2071 | |
| 2072 void redirect([String method, Uri url]) { | |
| 2073 if (_socketConn != null) { | |
| 2074 throw new HttpException("Cannot redirect with body data pending"); | |
| 2075 } | |
| 2076 if (method == null) method = _method; | |
| 2077 if (url == null) { | |
| 2078 url = new Uri.fromString(_response.headers.value(HttpHeaders.LOCATION)); | |
| 2079 } | |
| 2080 if (_redirects == null) { | |
| 2081 _redirects = new List<_RedirectInfo>(); | |
| 2082 } | |
| 2083 _redirects.add(new _RedirectInfo(_response.statusCode, method, url)); | |
| 2084 _request = null; | |
| 2085 _response = null; | |
| 2086 // Open redirect URL using the same connection instance. | |
| 2087 _client._openUrl(method, url, this); | |
| 2088 } | |
| 2089 | |
| 2090 List<RedirectInfo> get redirects => _redirects; | |
| 2091 | |
| 2092 Function _onRequest; | |
| 2093 Function _onResponse; | |
| 2094 Function _onErrorCallback; | |
| 2095 | |
| 2096 _HttpClient _client; | |
| 2097 _SocketConnection _socketConn; | |
| 2098 HttpClientRequest _request; | |
| 2099 HttpClientResponse _response; | |
| 2100 String _method; | |
| 2101 bool _usingProxy; | |
| 2102 | |
| 2103 // Redirect handling | |
| 2104 bool followRedirects = true; | |
| 2105 int maxRedirects = 5; | |
| 2106 List<_RedirectInfo> _redirects; | |
| 2107 | |
| 2108 // Callbacks. | |
| 2109 var requestReceived; | |
| 2110 } | |
| 2111 | |
| 2112 | |
| 2113 // Class for holding keep-alive sockets in the cache for the HTTP | |
| 2114 // client together with the connection information. | |
| 2115 class _SocketConnection { | |
| 2116 _SocketConnection(String this._host, | |
| 2117 int this._port, | |
| 2118 Socket this._socket); | |
| 2119 | |
| 2120 void _markReturned() { | |
| 2121 _socket.onData = null; | |
| 2122 _socket.onClosed = null; | |
| 2123 _socket.onError = null; | |
| 2124 _returnTime = new Date.now(); | |
| 2125 } | |
| 2126 | |
| 2127 Duration _idleTime(Date now) => now.difference(_returnTime); | |
| 2128 | |
| 2129 int get hashCode => _socket.hashCode; | |
| 2130 | |
| 2131 String _host; | |
| 2132 int _port; | |
| 2133 Socket _socket; | |
| 2134 Date _returnTime; | |
| 2135 } | |
| 2136 | |
| 2137 class _ProxyConfiguration { | |
| 2138 static const String PROXY_PREFIX = "PROXY "; | |
| 2139 static const String DIRECT_PREFIX = "DIRECT"; | |
| 2140 | |
| 2141 _ProxyConfiguration(String configuration) : proxies = new List<_Proxy>() { | |
| 2142 if (configuration == null) { | |
| 2143 throw new HttpException("Invalid proxy configuration $configuration"); | |
| 2144 } | |
| 2145 List<String> list = configuration.split(";"); | |
| 2146 list.forEach((String proxy) { | |
| 2147 proxy = proxy.trim(); | |
| 2148 if (!proxy.isEmpty) { | |
| 2149 if (proxy.startsWith(PROXY_PREFIX)) { | |
| 2150 int colon = proxy.indexOf(":"); | |
| 2151 if (colon == -1 || colon == 0 || colon == proxy.length - 1) { | |
| 2152 throw new HttpException( | |
| 2153 "Invalid proxy configuration $configuration"); | |
| 2154 } | |
| 2155 // Skip the "PROXY " prefix. | |
| 2156 String host = proxy.substring(PROXY_PREFIX.length, colon).trim(); | |
| 2157 String portString = proxy.substring(colon + 1).trim(); | |
| 2158 int port; | |
| 2159 try { | |
| 2160 port = int.parse(portString); | |
| 2161 } on FormatException catch (e) { | |
| 2162 throw new HttpException( | |
| 2163 "Invalid proxy configuration $configuration, " | |
| 2164 "invalid port '$portString'"); | |
| 2165 } | |
| 2166 proxies.add(new _Proxy(host, port)); | |
| 2167 } else if (proxy.trim() == DIRECT_PREFIX) { | |
| 2168 proxies.add(new _Proxy.direct()); | |
| 2169 } else { | |
| 2170 throw new HttpException("Invalid proxy configuration $configuration"); | |
| 2171 } | |
| 2172 } | |
| 2173 }); | |
| 2174 } | |
| 2175 | |
| 2176 const _ProxyConfiguration.direct() | |
| 2177 : proxies = const [const _Proxy.direct()]; | |
| 2178 | |
| 2179 final List<_Proxy> proxies; | |
| 2180 } | |
| 2181 | |
| 2182 class _Proxy { | |
| 2183 const _Proxy(this.host, this.port) : isDirect = false; | |
| 2184 const _Proxy.direct() : host = null, port = null, isDirect = true; | |
| 2185 | |
| 2186 final String host; | |
| 2187 final int port; | |
| 2188 final bool isDirect; | |
| 2189 } | |
| 2190 | |
| 2191 class _HttpClient implements HttpClient { | |
| 2192 static const int DEFAULT_EVICTION_TIMEOUT = 60000; | |
| 2193 | |
| 2194 _HttpClient() : _openSockets = new Map(), | |
| 2195 _activeSockets = new Set(), | |
| 2196 credentials = new List<_Credentials>(), | |
| 2197 _shutdown = false; | |
| 2198 | |
| 2199 HttpClientConnection open( | |
| 2200 String method, String host, int port, String path) { | |
| 2201 // TODO(sgjesse): The path set here can contain both query and | |
| 2202 // fragment. They should be cracked and set correctly. | |
| 2203 return _open(method, new Uri.fromComponents( | |
| 2204 scheme: "http", domain: host, port: port, path: path)); | |
| 2205 } | |
| 2206 | |
| 2207 HttpClientConnection _open(String method, | |
| 2208 Uri uri, | |
| 2209 [_HttpClientConnection connection]) { | |
| 2210 if (_shutdown) throw new HttpException("HttpClient shutdown"); | |
| 2211 if (method == null || uri.domain.isEmpty) { | |
| 2212 throw new ArgumentError(null); | |
| 2213 } | |
| 2214 return _prepareHttpClientConnection(method, uri, connection); | |
| 2215 } | |
| 2216 | |
| 2217 HttpClientConnection openUrl(String method, Uri url) { | |
| 2218 return _openUrl(method, url); | |
| 2219 } | |
| 2220 | |
| 2221 HttpClientConnection _openUrl(String method, | |
| 2222 Uri url, | |
| 2223 [_HttpClientConnection connection]) { | |
| 2224 if (url.scheme != "http") { | |
| 2225 throw new HttpException("Unsupported URL scheme ${url.scheme}"); | |
| 2226 } | |
| 2227 return _open(method, url, connection); | |
| 2228 } | |
| 2229 | |
| 2230 HttpClientConnection get(String host, int port, String path) { | |
| 2231 return open("GET", host, port, path); | |
| 2232 } | |
| 2233 | |
| 2234 HttpClientConnection getUrl(Uri url) => _openUrl("GET", url); | |
| 2235 | |
| 2236 HttpClientConnection post(String host, int port, String path) { | |
| 2237 return open("POST", host, port, path); | |
| 2238 } | |
| 2239 | |
| 2240 HttpClientConnection postUrl(Uri url) => _openUrl("POST", url); | |
| 2241 | |
| 2242 set authenticate(bool f(Uri url, String scheme, String realm)) { | |
| 2243 _authenticate = f; | |
| 2244 } | |
| 2245 | |
| 2246 void addCredentials( | |
| 2247 Uri url, String realm, HttpClientCredentials cr) { | |
| 2248 credentials.add(new _Credentials(url, realm, cr)); | |
| 2249 } | |
| 2250 | |
| 2251 set findProxy(String f(Uri uri)) => _findProxy = f; | |
| 2252 | |
| 2253 void shutdown() { | |
| 2254 _openSockets.forEach((String key, Queue<_SocketConnection> connections) { | |
| 2255 while (!connections.isEmpty) { | |
| 2256 _SocketConnection socketConn = connections.removeFirst(); | |
| 2257 socketConn._socket.close(); | |
| 2258 } | |
| 2259 }); | |
| 2260 _activeSockets.forEach((_SocketConnection socketConn) { | |
| 2261 socketConn._socket.close(); | |
| 2262 }); | |
| 2263 if (_evictionTimer != null) _cancelEvictionTimer(); | |
| 2264 _shutdown = true; | |
| 2265 } | |
| 2266 | |
| 2267 void _cancelEvictionTimer() { | |
| 2268 _evictionTimer.cancel(); | |
| 2269 _evictionTimer = null; | |
| 2270 } | |
| 2271 | |
| 2272 String _connectionKey(String host, int port) { | |
| 2273 return "$host:$port"; | |
| 2274 } | |
| 2275 | |
| 2276 HttpClientConnection _prepareHttpClientConnection( | |
| 2277 String method, | |
| 2278 Uri url, | |
| 2279 [_HttpClientConnection connection]) { | |
| 2280 | |
| 2281 void _establishConnection(String host, | |
| 2282 int port, | |
| 2283 _ProxyConfiguration proxyConfiguration, | |
| 2284 int proxyIndex) { | |
| 2285 | |
| 2286 void _connectionOpened(_SocketConnection socketConn, | |
| 2287 _HttpClientConnection connection, | |
| 2288 bool usingProxy) { | |
| 2289 connection._usingProxy = usingProxy; | |
| 2290 connection._connectionEstablished(socketConn); | |
| 2291 HttpClientRequest request = connection.open(method, url); | |
| 2292 request.headers.host = host; | |
| 2293 request.headers.port = port; | |
| 2294 if (url.userInfo != null && !url.userInfo.isEmpty) { | |
| 2295 // If the URL contains user information use that for basic | |
| 2296 // authorization | |
| 2297 _UTF8Encoder encoder = new _UTF8Encoder(); | |
| 2298 String auth = | |
| 2299 CryptoUtils.bytesToBase64(encoder.encodeString(url.userInfo)); | |
| 2300 request.headers.set(HttpHeaders.AUTHORIZATION, "Basic $auth"); | |
| 2301 } else { | |
| 2302 // Look for credentials. | |
| 2303 _Credentials cr = _findCredentials(url); | |
| 2304 if (cr != null) { | |
| 2305 cr.authorize(request); | |
| 2306 } | |
| 2307 } | |
| 2308 if (connection._onRequest != null) { | |
| 2309 connection._onRequest(request); | |
| 2310 } else { | |
| 2311 request.outputStream.close(); | |
| 2312 } | |
| 2313 } | |
| 2314 | |
| 2315 assert(proxyIndex < proxyConfiguration.proxies.length); | |
| 2316 | |
| 2317 // Determine the actual host to connect to. | |
| 2318 String connectHost; | |
| 2319 int connectPort; | |
| 2320 _Proxy proxy = proxyConfiguration.proxies[proxyIndex]; | |
| 2321 if (proxy.isDirect) { | |
| 2322 connectHost = host; | |
| 2323 connectPort = port; | |
| 2324 } else { | |
| 2325 connectHost = proxy.host; | |
| 2326 connectPort = proxy.port; | |
| 2327 } | |
| 2328 | |
| 2329 // If there are active connections for this key get the first one | |
| 2330 // otherwise create a new one. | |
| 2331 String key = _connectionKey(connectHost, connectPort); | |
| 2332 Queue socketConnections = _openSockets[key]; | |
| 2333 if (socketConnections == null || socketConnections.isEmpty) { | |
| 2334 Socket socket = new Socket(connectHost, connectPort); | |
| 2335 // Until the connection is established handle connection errors | |
| 2336 // here as the HttpClientConnection object is not yet associated | |
| 2337 // with the socket. | |
| 2338 socket.onError = (e) { | |
| 2339 proxyIndex++; | |
| 2340 if (proxyIndex < proxyConfiguration.proxies.length) { | |
| 2341 // Try the next proxy in the list. | |
| 2342 _establishConnection(host, port, proxyConfiguration, proxyIndex); | |
| 2343 } else { | |
| 2344 // Report the error through the HttpClientConnection object to | |
| 2345 // the client. | |
| 2346 connection._onError(e); | |
| 2347 } | |
| 2348 }; | |
| 2349 socket.onConnect = () { | |
| 2350 // When the connection is established, clear the error | |
| 2351 // callback as it will now be handled by the | |
| 2352 // HttpClientConnection object which will be associated with | |
| 2353 // the connected socket. | |
| 2354 socket.onError = null; | |
| 2355 _SocketConnection socketConn = | |
| 2356 new _SocketConnection(connectHost, connectPort, socket); | |
| 2357 _activeSockets.add(socketConn); | |
| 2358 _connectionOpened(socketConn, connection, !proxy.isDirect); | |
| 2359 }; | |
| 2360 } else { | |
| 2361 _SocketConnection socketConn = socketConnections.removeFirst(); | |
| 2362 _activeSockets.add(socketConn); | |
| 2363 new Timer(0, (ignored) => | |
| 2364 _connectionOpened(socketConn, connection, !proxy.isDirect)); | |
| 2365 | |
| 2366 // Get rid of eviction timer if there are no more active connections. | |
| 2367 if (socketConnections.isEmpty) _openSockets.remove(key); | |
| 2368 if (_openSockets.isEmpty) _cancelEvictionTimer(); | |
| 2369 } | |
| 2370 } | |
| 2371 | |
| 2372 // Find the TCP host and port. | |
| 2373 String host = url.domain; | |
| 2374 int port = url.port == 0 ? HttpClient.DEFAULT_HTTP_PORT : url.port; | |
| 2375 | |
| 2376 // Create a new connection object if we are not re-using an existing one. | |
| 2377 if (connection == null) { | |
| 2378 connection = new _HttpClientConnection(this); | |
| 2379 } | |
| 2380 connection.onDetach = () => _activeSockets.remove(connection._socketConn); | |
| 2381 | |
| 2382 // Check to see if a proxy server should be used for this connection. | |
| 2383 _ProxyConfiguration proxyConfiguration = const _ProxyConfiguration.direct(); | |
| 2384 if (_findProxy != null) { | |
| 2385 // TODO(sgjesse): Keep a map of these as normally only a few | |
| 2386 // configuration strings will be used. | |
| 2387 proxyConfiguration = new _ProxyConfiguration(_findProxy(url)); | |
| 2388 } | |
| 2389 | |
| 2390 // Establish the connection starting with the first proxy configured. | |
| 2391 _establishConnection(host, port, proxyConfiguration, 0); | |
| 2392 | |
| 2393 return connection; | |
| 2394 } | |
| 2395 | |
| 2396 void _returnSocketConnection(_SocketConnection socketConn) { | |
| 2397 // Mark socket as returned to unregister from the old connection. | |
| 2398 socketConn._markReturned(); | |
| 2399 | |
| 2400 // If the HTTP client is beeing shutdown don't return the connection. | |
| 2401 if (_shutdown) { | |
| 2402 socketConn._socket.close(); | |
| 2403 return; | |
| 2404 }; | |
| 2405 | |
| 2406 String key = _connectionKey(socketConn._host, socketConn._port); | |
| 2407 | |
| 2408 // Get or create the connection list for this key. | |
| 2409 Queue sockets = _openSockets[key]; | |
| 2410 if (sockets == null) { | |
| 2411 sockets = new Queue(); | |
| 2412 _openSockets[key] = sockets; | |
| 2413 } | |
| 2414 | |
| 2415 // If there is currently no eviction timer start one. | |
| 2416 if (_evictionTimer == null) { | |
| 2417 void _handleEviction(Timer timer) { | |
| 2418 Date now = new Date.now(); | |
| 2419 List<String> emptyKeys = new List<String>(); | |
| 2420 _openSockets.forEach( | |
| 2421 void _(String key, Queue<_SocketConnection> connections) { | |
| 2422 // As returned connections are added at the head of the | |
| 2423 // list remove from the tail. | |
| 2424 while (!connections.isEmpty) { | |
| 2425 _SocketConnection socketConn = connections.last; | |
| 2426 if (socketConn._idleTime(now).inMilliseconds > | |
| 2427 DEFAULT_EVICTION_TIMEOUT) { | |
| 2428 connections.removeLast(); | |
| 2429 socketConn._socket.close(); | |
| 2430 if (connections.isEmpty) emptyKeys.add(key); | |
| 2431 } else { | |
| 2432 break; | |
| 2433 } | |
| 2434 } | |
| 2435 }); | |
| 2436 | |
| 2437 // Remove the keys for which here are no more open connections. | |
| 2438 emptyKeys.forEach((String key) => _openSockets.remove(key)); | |
| 2439 | |
| 2440 // If all connections where evicted cancel the eviction timer. | |
| 2441 if (_openSockets.isEmpty) _cancelEvictionTimer(); | |
| 2442 } | |
| 2443 _evictionTimer = new Timer.repeating(10000, _handleEviction); | |
| 2444 } | |
| 2445 | |
| 2446 // Return connection. | |
| 2447 _activeSockets.remove(socketConn); | |
| 2448 sockets.addFirst(socketConn); | |
| 2449 } | |
| 2450 | |
| 2451 _Credentials _findCredentials(Uri url, [_AuthenticationScheme scheme]) { | |
| 2452 // Look for credentials. | |
| 2453 _Credentials cr = | |
| 2454 credentials.reduce(null, (_Credentials prev, _Credentials value) { | |
| 2455 if (value.applies(url, scheme)) { | |
| 2456 if (prev == null) return value; | |
| 2457 return value.uri.path.length > prev.uri.path.length ? value : prev; | |
| 2458 } else { | |
| 2459 return prev; | |
| 2460 } | |
| 2461 }); | |
| 2462 return cr; | |
| 2463 } | |
| 2464 | |
| 2465 void _removeCredentials(_Credentials cr) { | |
| 2466 int index = credentials.indexOf(cr); | |
| 2467 if (index != -1) { | |
| 2468 credentials.removeAt(index); | |
| 2469 } | |
| 2470 } | |
| 2471 | |
| 2472 Function _onOpen; | |
| 2473 Map<String, Queue<_SocketConnection>> _openSockets; | |
| 2474 Set<_SocketConnection> _activeSockets; | |
| 2475 List<_Credentials> credentials; | |
| 2476 Timer _evictionTimer; | |
| 2477 Function _findProxy; | |
| 2478 Function _authenticate; | |
| 2479 bool _shutdown; // Has this HTTP client been shutdown? | |
| 2480 } | |
| 2481 | |
| 2482 | |
| 2483 class _HttpConnectionInfo implements HttpConnectionInfo { | |
| 2484 String remoteHost; | |
| 2485 int remotePort; | |
| 2486 int localPort; | |
| 2487 } | |
| 2488 | |
| 2489 | |
| 2490 class _DetachedSocket implements DetachedSocket { | |
| 2491 _DetachedSocket(this._socket, this._unparsedData); | |
| 2492 Socket get socket => _socket; | |
| 2493 List<int> get unparsedData => _unparsedData; | |
| 2494 Socket _socket; | |
| 2495 List<int> _unparsedData; | |
| 2496 } | |
| 2497 | |
| 2498 | |
| 2499 class _AuthenticationScheme { | |
| 2500 static const UNKNOWN = const _AuthenticationScheme(-1); | |
| 2501 static const BASIC = const _AuthenticationScheme(0); | |
| 2502 static const DIGEST = const _AuthenticationScheme(1); | |
| 2503 | |
| 2504 const _AuthenticationScheme(this._scheme); | |
| 2505 | |
| 2506 factory _AuthenticationScheme.fromString(String scheme) { | |
| 2507 if (scheme.toLowerCase() == "basic") return BASIC; | |
| 2508 if (scheme.toLowerCase() == "digest") return DIGEST; | |
| 2509 return UNKNOWN; | |
| 2510 } | |
| 2511 | |
| 2512 String toString() { | |
| 2513 if (this == BASIC) return "Basic"; | |
| 2514 if (this == DIGEST) return "Digest"; | |
| 2515 return "Unknown"; | |
| 2516 } | |
| 2517 | |
| 2518 final int _scheme; | |
| 2519 } | |
| 2520 | |
| 2521 | |
| 2522 class _Credentials { | |
| 2523 _Credentials(this.uri, this.realm, this.credentials); | |
| 2524 | |
| 2525 _AuthenticationScheme get scheme => credentials.scheme; | |
| 2526 | |
| 2527 bool applies(Uri uri, _AuthenticationScheme scheme) { | |
| 2528 if (scheme != null && credentials.scheme != scheme) return false; | |
| 2529 if (uri.domain != this.uri.domain) return false; | |
| 2530 int thisPort = | |
| 2531 this.uri.port == 0 ? HttpClient.DEFAULT_HTTP_PORT : this.uri.port; | |
| 2532 int otherPort = uri.port == 0 ? HttpClient.DEFAULT_HTTP_PORT : uri.port; | |
| 2533 if (otherPort != thisPort) return false; | |
| 2534 return uri.path.startsWith(this.uri.path); | |
| 2535 } | |
| 2536 | |
| 2537 void authorize(HttpClientRequest request) { | |
| 2538 credentials.authorize(this, request); | |
| 2539 used = true; | |
| 2540 } | |
| 2541 | |
| 2542 bool used = false; | |
| 2543 Uri uri; | |
| 2544 String realm; | |
| 2545 HttpClientCredentials credentials; | |
| 2546 | |
| 2547 // Digest specific fields. | |
| 2548 String nonce; | |
| 2549 String algorithm; | |
| 2550 String qop; | |
| 2551 } | |
| 2552 | |
| 2553 | |
| 2554 class _HttpClientCredentials implements HttpClientCredentials { | |
| 2555 abstract _AuthenticationScheme get scheme; | |
| 2556 abstract void authorize(HttpClientRequest request); | |
| 2557 } | |
| 2558 | |
| 2559 | |
| 2560 class _HttpClientBasicCredentials implements HttpClientBasicCredentials { | |
| 2561 _HttpClientBasicCredentials(this.username, | |
| 2562 this.password); | |
| 2563 | |
| 2564 _AuthenticationScheme get scheme => _AuthenticationScheme.BASIC; | |
| 2565 | |
| 2566 void authorize(_Credentials _, HttpClientRequest request) { | |
| 2567 // There is no mentioning of username/password encoding in RFC | |
| 2568 // 2617. However there is an open draft for adding an additional | |
| 2569 // accept-charset parameter to the WWW-Authenticate and | |
| 2570 // Proxy-Authenticate headers, see | |
| 2571 // http://tools.ietf.org/html/draft-reschke-basicauth-enc-06. For | |
| 2572 // now always use UTF-8 encoding. | |
| 2573 _UTF8Encoder encoder = new _UTF8Encoder(); | |
| 2574 String auth = | |
| 2575 CryptoUtils.bytesToBase64(encoder.encodeString( | |
| 2576 "$username:$password")); | |
| 2577 request.headers.set(HttpHeaders.AUTHORIZATION, "Basic $auth"); | |
| 2578 } | |
| 2579 | |
| 2580 String username; | |
| 2581 String password; | |
| 2582 } | |
| 2583 | |
| 2584 | |
| 2585 class _HttpClientDigestCredentials implements HttpClientDigestCredentials { | |
| 2586 _HttpClientDigestCredentials(this.username, | |
| 2587 this.password); | |
| 2588 | |
| 2589 _AuthenticationScheme get scheme => _AuthenticationScheme.DIGEST; | |
| 2590 | |
| 2591 void authorize(_Credentials credentials, HttpClientRequest request) { | |
| 2592 // TODO(sgjesse): Implement!!! | |
| 2593 throw new UnsupportedOperationException(); | |
| 2594 } | |
| 2595 | |
| 2596 String username; | |
| 2597 String password; | |
| 2598 } | |
| 2599 | |
| 2600 | |
| 2601 | |
| 2602 class _RedirectInfo implements RedirectInfo { | |
| 2603 const _RedirectInfo(int this.statusCode, | |
| 2604 String this.method, | |
| 2605 Uri this.location); | |
| 2606 final int statusCode; | |
| 2607 final String method; | |
| 2608 final Uri location; | |
| 2609 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 11337019:
Use patching for dart:io. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart