summaryrefslogtreecommitdiff
path: root/test_tools/simpletest/http.php
blob: fa27de9c77dcde958574217f11cd7e2f4e9a47c5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
<?php
    /**
     *	base include file for SimpleTest
     *	@package	SimpleTest
     *	@subpackage	WebTester
     *	@version	$Id: http.php,v 1.98 2005/02/02 23:25:23 lastcraft Exp $
     */

    /**#@+
     *	include other SimpleTest class files
     */
    require_once(dirname(__FILE__) . '/socket.php');
    require_once(dirname(__FILE__) . '/url.php');
    /**#@-*/
    
    /**
     *    Cookie data holder. Cookie rules are full of pretty
     *    arbitary stuff. I have used...
     *    http://wp.netscape.com/newsref/std/cookie_spec.html
     *    http://www.cookiecentral.com/faq/
	 *    @package SimpleTest
	 *    @subpackage WebTester
     */
    class SimpleCookie {
        protected $_host;
        protected $_name;
        protected $_value;
        protected $_path;
        protected $_expiry;
        protected $_is_secure;
        
        /**
         *    Constructor. Sets the stored values.
         *    @param string $name            Cookie key.
         *    @param string $value           Value of cookie.
         *    @param string $path            Cookie path if not host wide.
         *    @param string $expiry          Expiry date as string.
         *    @param boolean $is_secure      Currently ignored.
         */
        function SimpleCookie($name, $value = false, $path = false, $expiry = false, $is_secure = false) {
            $this->_host = false;
            $this->_name = $name;
            $this->_value = $value;
            $this->_path = ($path ? $this->_fixPath($path) : "/");
            $this->_expiry = false;
            if (is_string($expiry)) {
                $this->_expiry = strtotime($expiry);
            } elseif (is_integer($expiry)) {
                $this->_expiry = $expiry;
            }
            $this->_is_secure = $is_secure;
        }
        
        /**
         *    Sets the host. The cookie rules determine
         *    that the first two parts are taken for
         *    certain TLDs and three for others. If the
         *    new host does not match these rules then the
         *    call will fail.
         *    @param string $host       New hostname.
         *    @return boolean           True if hostname is valid.
         *    @access public
         */
        function setHost($host) {
            if ($host = $this->_truncateHost($host)) {
                $this->_host = $host;
                return true;
            }
            return false;
        }
        
        /**
         *    Accessor for the truncated host to which this
         *    cookie applies.
         *    @return string       Truncated hostname.
         *    @access public
         */
        function getHost() {
            return $this->_host;
        }
        
        /**
         *    Test for a cookie being valid for a host name.
         *    @param string $host    Host to test against.
         *    @return boolean        True if the cookie would be valid
         *                           here.
         */
        function isValidHost($host) {
            return ($this->_truncateHost($host) === $this->getHost());
        }
        
        /**
         *    Extracts just the domain part that determines a
         *    cookie's host validity.
         *    @param string $host    Host name to truncate.
         *    @return string        Domain or false on a bad host.
         *    @access private
         */
        function _truncateHost($host) {
            $tlds = SimpleUrl::getAllTopLevelDomains();
            if (preg_match('/[a-z\-]+\.(' . $tlds . ')$/i', $host, $matches)) {
                return $matches[0];
            } elseif (preg_match('/[a-z\-]+\.[a-z\-]+\.[a-z\-]+$/i', $host, $matches)) {
                return $matches[0];
            }
            return false;
        }
        
        /**
         *    Accessor for name.
         *    @return string       Cookie key.
         *    @access public
         */
        function getName() {
            return $this->_name;
        }
        
        /**
         *    Accessor for value. A deleted cookie will
         *    have an empty string for this.
         *    @return string       Cookie value.
         *    @access public
         */
        function getValue() {
            return $this->_value;
        }
        
        /**
         *    Accessor for path.
         *    @return string       Valid cookie path.
         *    @access public
         */
        function getPath() {
            return $this->_path;
        }
        
        /**
         *    Tests a path to see if the cookie applies
         *    there. The test path must be longer or
         *    equal to the cookie path.
         *    @param string $path       Path to test against.
         *    @return boolean           True if cookie valid here.
         *    @access public
         */
        function isValidPath($path) {
            return (strncmp(
                    $this->_fixPath($path),
                    $this->getPath(),
                    strlen($this->getPath())) == 0);
        }
        
        /**
         *    Accessor for expiry.
         *    @return string       Expiry string.
         *    @access public
         */
        function getExpiry() {
            if (! $this->_expiry) {
                return false;
            }
            return gmdate("D, d M Y H:i:s", $this->_expiry) . " GMT";
        }
        
        /**
         *    Test to see if cookie is expired against
         *    the cookie format time or timestamp.
         *    Will give true for a session cookie.
         *    @param integer/string $now  Time to test against. Result
         *                                will be false if this time
         *                                is later than the cookie expiry.
         *                                Can be either a timestamp integer
         *                                or a cookie format date.
         *    @access public
         */
        function isExpired($now) {
            if (! $this->_expiry) {
                return true;
            }
            if (is_string($now)) {
                $now = strtotime($now);
            }
            return ($this->_expiry < $now);
        }
        
        /**
         *    Ages the cookie by the specified number of
         *    seconds.
         *    @param integer $interval   In seconds.
         *    @public
         */
        function agePrematurely($interval) {
            if ($this->_expiry) {
                $this->_expiry -= $interval;
            }
        }
        
        /**
         *    Accessor for the secure flag.
         *    @return boolean       True if cookie needs SSL.
         *    @access public
         */
        function isSecure() {
            return $this->_is_secure;
        }
        
        /**
         *    Adds a trailing and leading slash to the path
         *    if missing.
         *    @param string $path            Path to fix.
         *    @access private
         */
        function _fixPath($path) {
            if (substr($path, 0, 1) != '/') {
                $path = '/' . $path;
            }
            if (substr($path, -1, 1) != '/') {
                $path .= '/';
            }
            return $path;
        }
    }
    
    /**
     *    Creates HTTP headers for the end point of
     *    a HTTP request.
	 *    @package SimpleTest
	 *    @subpackage WebTester
     */
    class SimpleRoute {
        protected $_url;
        
        /**
         *    Sets the target URL.
         *    @param SimpleUrl $url   URL as object.
         *    @access public
         */
        function SimpleRoute($url) {
            $this->_url = $url;
        }
        
        /**
         *    Resource name.
         *    @return SimpleUrl        Current url.
         *    @access protected
         */
        function getUrl() {
            return $this->_url;
        }
        
        /**
         *    Creates the first line which is the actual request.
         *    @param string $method   HTTP request method, usually GET.
         *    @return string          Request line content.
         *    @access protected
         */
        function _getRequestLine($method) {
            return $method . ' ' . $this->_url->getPath() .
                    $this->_url->getEncodedRequest() . ' HTTP/1.0';
        }
        
        /**
         *    Creates the host part of the request.
         *    @return string          Host line content.
         *    @access protected
         */
        function _getHostLine() {
            $line = 'Host: ' . $this->_url->getHost();
            if ($this->_url->getPort()) {
                $line .= ':' . $this->_url->getPort();
            }
            return $line;
        }
        
        /**
         *    Opens a socket to the route.
         *    @param string $method      HTTP request method, usually GET.
         *    @param integer $timeout    Connection timeout.
         *    @return SimpleSocket       New socket.
         *    @access public
         */
        function createConnection($method, $timeout) {
            $default_port = ('https' == $this->_url->getScheme()) ? 443 : 80;
            $socket = $this->_createSocket(
                    $this->_url->getScheme() ? $this->_url->getScheme() : 'http',
                    $this->_url->getHost(),
                    $this->_url->getPort() ? $this->_url->getPort() : $default_port,
                    $timeout);
            if (! $socket->isError()) {
                $socket->write($this->_getRequestLine($method) . "\r\n");
                $socket->write($this->_getHostLine() . "\r\n");
                $socket->write("Connection: close\r\n");
            }
            return $socket;
        }
        
        /**
         *    Factory for socket.
         *    @param string $scheme                   Protocol to use.
         *    @param string $host                     Hostname to connect to.
         *    @param integer $port                    Remote port.
         *    @param integer $timeout                 Connection timeout.
         *    @return SimpleSocket/SimpleSecureSocket New socket.
         *    @access protected
         */
        function _createSocket($scheme, $host, $port, $timeout) {
            if (in_array($scheme, array('https'))) {
                return new SimpleSecureSocket($host, $port, $timeout);
            }
            return new SimpleSocket($host, $port, $timeout);
        }
    }
    
    /**
     *    Creates HTTP headers for the end point of
     *    a HTTP request via a proxy server.
	 *    @package SimpleTest
	 *    @subpackage WebTester
     */
    class SimpleProxyRoute extends SimpleRoute {
        protected $_proxy;
        protected $_username;
        protected $_password;
        
        /**
         *    Stashes the proxy address.
         *    @param SimpleUrl $url     URL as object.
         *    @param string $proxy      Proxy URL.
         *    @param string $username   Username for autentication.
         *    @param string $password   Password for autentication.
         *    @access public
         */
        function SimpleProxyRoute($url, $proxy, $username = false, $password = false) {
            $this->SimpleRoute($url);
            $this->_proxy = $proxy;
            $this->_username = $username;
            $this->_password = $password;
        }
        
        /**
         *    Creates the first line which is the actual request.
         *    @param string $method   HTTP request method, usually GET.
         *    @param SimpleUrl $url   URL as object.
         *    @return string          Request line content.
         *    @access protected
         */
        function _getRequestLine($method) {
            $url = $this->getUrl();
            $scheme = $url->getScheme() ? $url->getScheme() : 'http';
            $port = $url->getPort() ? ':' . $url->getPort() : '';
            return $method . ' ' . $scheme . '://' . $url->getHost() . $port .
                    $url->getPath() . $url->getEncodedRequest() . ' HTTP/1.0';
        }
        
        /**
         *    Creates the host part of the request.
         *    @param SimpleUrl $url   URL as object.
         *    @return string          Host line content.
         *    @access protected
         */
        function _getHostLine() {
            $host = 'Host: ' . $this->_proxy->getHost();
            $port = $this->_proxy->getPort() ? $this->_proxy->getPort() : 8080;
            return "$host:$port";
        }
        
        /**
         *    Opens a socket to the route.
         *    @param string $method       HTTP request method, usually GET.
         *    @param integer $timeout     Connection timeout.
         *    @return SimpleSocket        New socket.
         *    @access public
         */
        function createConnection($method, $timeout) {
            $socket = $this->_createSocket(
                    $this->_proxy->getScheme() ? $this->_proxy->getScheme() : 'http',
                    $this->_proxy->getHost(),
                    $this->_proxy->getPort() ? $this->_proxy->getPort() : 8080,
                    $timeout);
            if (! $socket->isError()) {
                $socket->write($this->_getRequestLine($method) . "\r\n");
                $socket->write($this->_getHostLine() . "\r\n");
                if ($this->_username && $this->_password) {
                    $socket->write('Proxy-Authorization: Basic ' .
                            base64_encode($this->_username . ':' . $this->_password) .
                            "\r\n");
                }
                $socket->write("Connection: close\r\n");
            }
            return $socket;
        }
    }

    /**
     *    HTTP request for a web page. Factory for
     *    HttpResponse object.
	 *    @package SimpleTest
	 *    @subpackage WebTester
     */
    class SimpleHttpRequest {
        protected $_route;
        protected $_method;
        protected $_encoding;
        protected $_headers;
        protected $_cookies;
        
        /**
         *    Saves the URL ready for fetching.
         *    @param SimpleRoute $route   Request route.
         *    @param string $method                  HTTP request method,
         *                                           usually GET.
         *    @param SimpleFormEncoding $encoding    Content to send with
         *                                           request or false.
         *    @access public
         */
        function SimpleHttpRequest($route, $method, $encoding = false) {
            $this->_route = $route;
            $this->_method = $method;
            $this->_encoding = $encoding;
            $this->_headers = array();
            $this->_cookies = array();
        }
        
        /**
         *    Fetches the content and parses the headers.
         *    @param integer $timeout      Connection timeout.
         *    @return SimpleHttpResponse   A response which may only have
         *                                 an error.
         *    @access public
         */
        function fetch($timeout) {
            $socket = $this->_route->createConnection($this->_method, $timeout);
            if ($socket->isError()) {
                return $this->_createResponse($socket);
            }
            $this->_dispatchRequest($socket, $this->_method, $this->_encoding);
            return $this->_createResponse($socket);
        }
        
        /**
         *    Sends the headers.
         *    @param SimpleSocket $socket           Open socket.
         *    @param string $method                 HTTP request method,
         *                                          usually GET.
         *    @param SimpleFormEncoding $encoding   Content to send with request.
         *    @access private
         */
        function _dispatchRequest($socket, $method, $encoding) {
            if ($encoding || ($method == 'POST')) {
                $socket->write("Content-Length: " . $this->_getContentLength($encoding) . "\r\n");
                $socket->write("Content-Type: application/x-www-form-urlencoded\r\n");
            }
            foreach ($this->_headers as $header_line) {
                $socket->write($header_line . "\r\n");
            }
            if (count($this->_cookies) > 0) {
                $socket->write("Cookie: " . $this->_marshallCookies($this->_cookies) . "\r\n");
            }
            $socket->write("\r\n");
            if ($encoding) {
                $socket->write($encoding->asString());
            }
        }
        
        /**
         *    Calculates the length of the encoded content.
         *    @param SimpleFormEncoding $encoding   Content to send with
         *                                          request or false.
         */
        function _getContentLength($encoding) {
            if (! $encoding) {
                return 0;
            }
            return (integer)strlen($encoding->asString());
        }
        
        /**
         *    Adds a header line to the request.
         *    @param string $header_line    Text of header line.
         *    @access public
         */
        function addHeaderLine($header_line) {
            $this->_headers[] = $header_line;
        }
        
        /**
         *    Adds a cookie to the request.
         *    @param SimpleCookie $cookie   Additional cookie.
         *    @access public
         */
        function setCookie($cookie) {
            $this->_cookies[] = $cookie;
        }
        
        /**
         *    Serialises the cookie hash ready for
         *    transmission.
         *    @param hash $cookies     Parsed cookies.
         *    @return array            Cookies in header form.
         *    @access private
         */
        function _marshallCookies($cookies) {
            $cookie_pairs = array();
            foreach ($cookies as $cookie) {
                $cookie_pairs[] = $cookie->getName() . "=" . $cookie->getValue();
            }
            return implode(";", $cookie_pairs);
        }
        
        /**
         *    Wraps the socket in a response parser.
         *    @param SimpleSocket $socket   Responding socket.
         *    @return SimpleHttpResponse    Parsed response object.
         *    @access protected
         */
        function _createResponse($socket) {
            return new SimpleHttpResponse(
                    $socket,
                    $this->_method,
                    $this->_route->getUrl(),
                    $this->_encoding);
        }
    }
    
    /**
     *    Collection of header lines in the response.
	 *    @package SimpleTest
	 *    @subpackage WebTester
     */
    class SimpleHttpHeaders {
        protected $_raw_headers;
        protected $_response_code;
        protected $_http_version;
        protected $_mime_type;
        protected $_location;
        protected $_cookies;
        protected $_authentication;
        protected $_realm;
        
        /**
         *    Parses the incoming header block.
         *    @param string $headers     Header block.
         *    @access public
         */
        function SimpleHttpHeaders($headers) {
            $this->_raw_headers = $headers;
            $this->_response_code = false;
            $this->_http_version = false;
            $this->_mime_type = '';
            $this->_location = false;
            $this->_cookies = array();
            $this->_authentication = false;
            $this->_realm = false;
            foreach (split("\r\n", $headers) as $header_line) {
                $this->_parseHeaderLine($header_line);
            }
        }
        
        /**
         *    Accessor for parsed HTTP protocol version.
         *    @return integer           HTTP error code.
         *    @access public
         */
        function getHttpVersion() {
            return $this->_http_version;
        }
        
        /**
         *    Accessor for raw header block.
         *    @return string        All headers as raw string.
         *    @access public
         */
        function getRaw() {
            return $this->_raw_headers;
        }
        
        /**
         *    Accessor for parsed HTTP error code.
         *    @return integer           HTTP error code.
         *    @access public
         */
        function getResponseCode() {
            return (integer)$this->_response_code;
        }
        
        /**
         *    Returns the redirected URL or false if
         *    no redirection.
         *    @return string      URL or false for none.
         *    @access public
         */
        function getLocation() {
            return $this->_location;
        }
        
        /**
         *    Test to see if the response is a valid redirect.
         *    @return boolean       True if valid redirect.
         *    @access public
         */
        function isRedirect() {
            return in_array($this->_response_code, array(301, 302, 303, 307)) &&
                    (boolean)$this->getLocation();
        }
        
        /**
         *    Test to see if the response is an authentication
         *    challenge.
         *    @return boolean       True if challenge.
         *    @access public
         */
        function isChallenge() {
            return ($this->_response_code == 401) &&
                    (boolean)$this->_authentication &&
                    (boolean)$this->_realm;
        }
        
        /**
         *    Accessor for MIME type header information.
         *    @return string           MIME type.
         *    @access public
         */
        function getMimeType() {
            return $this->_mime_type;
        }
        
        /**
         *    Accessor for authentication type.
         *    @return string        Type.
         *    @access public
         */
        function getAuthentication() {
            return $this->_authentication;
        }
        
        /**
         *    Accessor for security realm.
         *    @return string        Realm.
         *    @access public
         */
        function getRealm() {
            return $this->_realm;
        }
        
        /**
         *    Accessor for any new cookies.
         *    @return array       List of new cookies.
         *    @access public
         */
        function getNewCookies() {
            return $this->_cookies;
        }

        /**
         *    Called on each header line to accumulate the held
         *    data within the class.
         *    @param string $header_line        One line of header.
         *    @access protected
         */
        function _parseHeaderLine($header_line) {
            if (preg_match('/HTTP\/(\d+\.\d+)\s+(.*?)\s/i', $header_line, $matches)) {
                $this->_http_version = $matches[1];
                $this->_response_code = $matches[2];
            }
            if (preg_match('/Content-type:\s*(.*)/i', $header_line, $matches)) {
                $this->_mime_type = trim($matches[1]);
            }
            if (preg_match('/Location:\s*(.*)/i', $header_line, $matches)) {
                $this->_location = trim($matches[1]);
            }
            if (preg_match('/Set-cookie:(.*)/i', $header_line, $matches)) {
                $this->_cookies[] = $this->_parseCookie($matches[1]);
            }
            if (preg_match('/WWW-Authenticate:\s+(\S+)\s+realm=\"(.*?)\"/i', $header_line, $matches)) {
                $this->_authentication = $matches[1];
                $this->_realm = trim($matches[2]);
            }
        }
        
        /**
         *    Parse the Set-cookie content.
         *    @param string $cookie_line    Text after "Set-cookie:"
         *    @return SimpleCookie          New cookie object.
         *    @access private
         */
        function _parseCookie($cookie_line) {
            $parts = split(";", $cookie_line);
            $cookie = array();
            preg_match('/\s*(.*?)\s*=(.*)/', array_shift($parts), $cookie);
            foreach ($parts as $part) {
                if (preg_match('/\s*(.*?)\s*=(.*)/', $part, $matches)) {
                    $cookie[$matches[1]] = trim($matches[2]);
                }
            }
            return new SimpleCookie(
                    $cookie[1],
                    trim($cookie[2]),
                    isset($cookie["path"]) ? $cookie["path"] : "",
                    isset($cookie["expires"]) ? $cookie["expires"] : false);
        }
    }
    
    /**
     *    Basic HTTP response.
	 *    @package SimpleTest
	 *    @subpackage WebTester
     */
    class SimpleHttpResponse extends SimpleStickyError {
        protected $_method;
        protected $_url;
        protected $_request_data;
        protected $_sent;
        protected $_content;
        protected $_headers;
        
        /**
         *    Constructor. Reads and parses the incoming
         *    content and headers.
         *    @param SimpleSocket $socket   Network connection to fetch
         *                                  response text from.
         *    @param string $method         HTTP request method.
         *    @param SimpleUrl $url         Resource name.
         *    @param mixed $request_data    Record of content sent.
         *    @access public
         */
        function SimpleHttpResponse($socket, $method, $url, $request_data = '') {
            $this->SimpleStickyError();
            $this->_method = $method;
            $this->_url = $url;
            $this->_request_data = $request_data;
            $this->_sent = $socket->getSent();
            $this->_content = false;
            $raw = $this->_readAll($socket);
            if ($socket->isError()) {
                $this->_setError('Error reading socket [' . $socket->getError() . ']');
                return;
            }
            $this->_parse($raw);
        }
        
        /**
         *    Splits up the headers and the rest of the content.
         *    @param string $raw    Content to parse.
         *    @access private
         */
        function _parse($raw) {
            if (! $raw) {
                $this->_setError('Nothing fetched');
                $this->_headers = new SimpleHttpHeaders('');
            } elseif (! strstr($raw, "\r\n\r\n")) {
                $this->_setError('Could not parse headers');
                $this->_headers = new SimpleHttpHeaders($raw);
            } else {
                list($headers, $this->_content) = split("\r\n\r\n", $raw, 2);
                $this->_headers = new SimpleHttpHeaders($headers);
            }
        }
        
        /**
         *    Original request method.
         *    @return string        GET, POST or HEAD.
         *    @access public
         */
        function getMethod() {
            return $this->_method;
        }
        
        /**
         *    Resource name.
         *    @return SimpleUrl        Current url.
         *    @access public
         */
        function getUrl() {
            return $this->_url;
        }
        
        /**
         *    Original request data.
         *    @return mixed              Sent content.
         *    @access public
         */
        function getRequestData() {
            return $this->_request_data;
        }
        
        /**
         *    Raw request that was sent down the wire.
         *    @return string        Bytes actually sent.
         *    @access public
         */
        function getSent() {
            return $this->_sent;
        }
        
        /**
         *    Accessor for the content after the last
         *    header line.
         *    @return string           All content.
         *    @access public
         */
        function getContent() {
            return $this->_content;
        }
        
        /**
         *    Accessor for header block. The response is the
         *    combination of this and the content.
         *    @return SimpleHeaders        Wrapped header block.
         *    @access public
         */
        function getHeaders() {
            return $this->_headers;
        }
        
        /**
         *    Accessor for any new cookies.
         *    @return array       List of new cookies.
         *    @access public
         */
        function getNewCookies() {
            return $this->_headers->getNewCookies();
        }
        
        /**
         *    Reads the whole of the socket output into a
         *    single string.
         *    @param SimpleSocket $socket  Unread socket.
         *    @return string               Raw output if successful
         *                                 else false.
         *    @access private
         */
        function _readAll($socket) {
            $all = '';
            while (! $this->_isLastPacket($next = $socket->read())) {
                $all .= $next;
            }
            return $all;
        }
        
        /**
         *    Test to see if the packet from the socket is the
         *    last one.
         *    @param string $packet    Chunk to interpret.
         *    @return boolean          True if empty or EOF.
         *    @access private
         */
        function _isLastPacket($packet) {
            if (is_string($packet)) {
                return $packet === '';
            }
            return ! $packet;
        }
    }
?>