forked from chronoxor/NetCoreServer
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathHttpResponse.cs
More file actions
897 lines (786 loc) · 33.4 KB
/
Copy pathHttpResponse.cs
File metadata and controls
897 lines (786 loc) · 33.4 KB
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
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;
namespace NetCoreServer
{
/// <summary>
/// HTTP response is used to create or process parameters of HTTP protocol response(status, headers, etc).
/// </summary>
/// <remarks>Not thread-safe.</remarks>
public class HttpResponse
{
static HttpResponse()
{
_mimeTable = new Dictionary<string, string>
{
// Base content types
{ ".html", "text/html" },
{ ".css", "text/css" },
{ ".js", "text/javascript" },
{ ".vue", "text/html" },
{ ".xml", "text/xml" },
// Application content types
{ ".atom", "application/atom+xml" },
{ ".fastsoap", "application/fastsoap" },
{ ".gzip", "application/gzip" },
{ ".json", "application/json" },
{ ".map", "application/json" },
{ ".pdf", "application/pdf" },
{ ".ps", "application/postscript" },
{ ".soap", "application/soap+xml" },
{ ".sql", "application/sql" },
{ ".xslt", "application/xslt+xml" },
{ ".zip", "application/zip" },
{ ".zlib", "application/zlib" },
// Audio content types
{ ".aac", "audio/aac" },
{ ".ac3", "audio/ac3" },
{ ".mp3", "audio/mpeg" },
{ ".ogg", "audio/ogg" },
// Font content types
{ ".ttf", "font/ttf" },
// Image content types
{ ".bmp", "image/bmp" },
{ ".emf", "image/emf" },
{ ".gif", "image/gif" },
{ ".jpg", "image/jpeg" },
{ ".jpm", "image/jpm" },
{ ".jpx", "image/jpx" },
{ ".jrx", "image/jrx" },
{ ".png", "image/png" },
{ ".svg", "image/svg+xml" },
{ ".tiff", "image/tiff" },
{ ".wmf", "image/wmf" },
// Message content types
{ ".http", "message/http" },
{ ".s-http", "message/s-http" },
// Model content types
{ ".mesh", "model/mesh" },
{ ".vrml", "model/vrml" },
// Text content types
{ ".csv", "text/csv" },
{ ".plain", "text/plain" },
{ ".richtext", "text/richtext" },
{ ".rtf", "text/rtf" },
{ ".rtx", "text/rtx" },
{ ".sgml", "text/sgml" },
{ ".strings", "text/strings" },
{ ".url", "text/uri-list" },
// Video content types
{ ".H264", "video/H264" },
{ ".H265", "video/H265" },
{ ".mp4", "video/mp4" },
{ ".mpeg", "video/mpeg" },
{ ".raw", "video/raw" }
};
}
/// <summary>
/// Initialize an empty HTTP response
/// </summary>
public HttpResponse()
{
Clear();
}
/// <summary>
/// Initialize a new HTTP response with a given status and protocol
/// </summary>
/// <param name="status">HTTP status</param>
/// <param name="protocol">Protocol version (default is "HTTP/1.1")</param>
public HttpResponse(int status, string protocol = "HTTP/1.1")
{
SetBegin(status, protocol);
}
/// <summary>
/// Initialize a new HTTP response with a given status, status phrase and protocol
/// </summary>
/// <param name="status">HTTP status</param>
/// <param name="statusPhrase">HTTP status phrase</param>
/// <param name="protocol">Protocol version</param>
public HttpResponse(int status, string statusPhrase, string protocol)
{
SetBegin(status, statusPhrase, protocol);
}
/// <summary>
/// Is the HTTP response empty?
/// </summary>
public bool IsEmpty { get { return (_cache.Size > 0); } }
/// <summary>
/// Is the HTTP response error flag set?
/// </summary>
public bool IsErrorSet { get; private set; }
/// <summary>
/// Get the HTTP response status
/// </summary>
public int Status { get; private set; }
/// <summary>
/// Get the HTTP response status phrase
/// </summary>
public string StatusPhrase { get { return _statusPhrase; } }
/// <summary>
/// Get the HTTP response protocol version
/// </summary>
public string Protocol { get { return _protocol; } }
/// <summary>
/// Get the HTTP response headers count
/// </summary>
public long Headers { get { return _headers.Count; } }
/// <summary>
/// Get the HTTP response header by index
/// </summary>
public (string, string) Header(int i)
{
Debug.Assert((i < _headers.Count), "Index out of bounds!");
if (i >= _headers.Count)
return ("", "");
return _headers[i];
}
/// <summary>
/// Get the HTTP response body as string
/// </summary>
public string Body { get { return _cache.ExtractString(_bodyIndex, _bodySize); } }
/// <summary>
/// Get the HTTP request body as byte array
/// </summary>
public byte[] BodyBytes { get { return _cache.Data[_bodyIndex..(_bodyIndex + _bodySize)]; } }
/// <summary>
/// Get the HTTP request body as read-only byte span
/// </summary>
public ReadOnlySpan<byte> BodySpan { get { return new ReadOnlySpan<byte>(_cache.Data, _bodyIndex, _bodySize); } }
/// <summary>
/// Get the HTTP response body length
/// </summary>
public long BodyLength { get { return _bodyLength; } }
/// <summary>
/// Get the HTTP response cache content
/// </summary>
public Buffer Cache { get { return _cache; } }
/// <summary>
/// Get string from the current HTTP response
/// </summary>
public override string ToString()
{
StringBuilder sb = new StringBuilder();
sb.AppendLine($"Status: {Status}");
sb.AppendLine($"Status phrase: {StatusPhrase}");
sb.AppendLine($"Protocol: {Protocol}");
sb.AppendLine($"Headers: {Headers}");
for (int i = 0; i < Headers; i++)
{
var header = Header(i);
sb.AppendLine($"{header.Item1} : {header.Item2}");
}
sb.AppendLine($"Body: {BodyLength}");
sb.AppendLine(Body);
return sb.ToString();
}
/// <summary>
/// Clear the HTTP response cache
/// </summary>
public HttpResponse Clear()
{
IsErrorSet = false;
Status = 0;
_statusPhrase = "";
_protocol = "";
_headers.Clear();
_bodyIndex = 0;
_bodySize = 0;
_bodyLength = 0;
_bodyLengthProvided = false;
_cache.Clear();
_cacheSize = 0;
return this;
}
/// <summary>
/// Set the HTTP response begin with a given status and protocol
/// </summary>
/// <param name="status">HTTP status</param>
/// <param name="protocol">Protocol version (default is "HTTP/1.1")</param>
public HttpResponse SetBegin(int status, string protocol = "HTTP/1.1")
{
string statusPhrase;
switch (status)
{
case 100: statusPhrase = "Continue"; break;
case 101: statusPhrase = "Switching Protocols"; break;
case 102: statusPhrase = "Processing"; break;
case 103: statusPhrase = "Early Hints"; break;
case 200: statusPhrase = "OK"; break;
case 201: statusPhrase = "Created"; break;
case 202: statusPhrase = "Accepted"; break;
case 203: statusPhrase = "Non-Authoritative Information"; break;
case 204: statusPhrase = "No Content"; break;
case 205: statusPhrase = "Reset Content"; break;
case 206: statusPhrase = "Partial Content"; break;
case 207: statusPhrase = "Multi-Status"; break;
case 208: statusPhrase = "Already Reported"; break;
case 226: statusPhrase = "IM Used"; break;
case 300: statusPhrase = "Multiple Choices"; break;
case 301: statusPhrase = "Moved Permanently"; break;
case 302: statusPhrase = "Found"; break;
case 303: statusPhrase = "See Other"; break;
case 304: statusPhrase = "Not Modified"; break;
case 305: statusPhrase = "Use Proxy"; break;
case 306: statusPhrase = "Switch Proxy"; break;
case 307: statusPhrase = "Temporary Redirect"; break;
case 308: statusPhrase = "Permanent Redirect"; break;
case 400: statusPhrase = "Bad Request"; break;
case 401: statusPhrase = "Unauthorized"; break;
case 402: statusPhrase = "Payment Required"; break;
case 403: statusPhrase = "Forbidden"; break;
case 404: statusPhrase = "Not Found"; break;
case 405: statusPhrase = "Method Not Allowed"; break;
case 406: statusPhrase = "Not Acceptable"; break;
case 407: statusPhrase = "Proxy Authentication Required"; break;
case 408: statusPhrase = "Request Timeout"; break;
case 409: statusPhrase = "Conflict"; break;
case 410: statusPhrase = "Gone"; break;
case 411: statusPhrase = "Length Required"; break;
case 412: statusPhrase = "Precondition Failed"; break;
case 413: statusPhrase = "Payload Too Large"; break;
case 414: statusPhrase = "URI Too Long"; break;
case 415: statusPhrase = "Unsupported Media Type"; break;
case 416: statusPhrase = "Range Not Satisfiable"; break;
case 417: statusPhrase = "Expectation Failed"; break;
case 421: statusPhrase = "Misdirected Request"; break;
case 422: statusPhrase = "Unprocessable Entity"; break;
case 423: statusPhrase = "Locked"; break;
case 424: statusPhrase = "Failed Dependency"; break;
case 425: statusPhrase = "Too Early"; break;
case 426: statusPhrase = "Upgrade Required"; break;
case 427: statusPhrase = "Unassigned"; break;
case 428: statusPhrase = "Precondition Required"; break;
case 429: statusPhrase = "Too Many Requests"; break;
case 431: statusPhrase = "Request Header Fields Too Large"; break;
case 451: statusPhrase = "Unavailable For Legal Reasons"; break;
case 500: statusPhrase = "Internal Server Error"; break;
case 501: statusPhrase = "Not Implemented"; break;
case 502: statusPhrase = "Bad Gateway"; break;
case 503: statusPhrase = "Service Unavailable"; break;
case 504: statusPhrase = "Gateway Timeout"; break;
case 505: statusPhrase = "HTTP Version Not Supported"; break;
case 506: statusPhrase = "Variant Also Negotiates"; break;
case 507: statusPhrase = "Insufficient Storage"; break;
case 508: statusPhrase = "Loop Detected"; break;
case 510: statusPhrase = "Not Extended"; break;
case 511: statusPhrase = "Network Authentication Required"; break;
default: statusPhrase = "Unknown"; break;
}
SetBegin(status, statusPhrase, protocol);
return this;
}
/// <summary>
/// Set the HTTP response begin with a given status, status phrase and protocol
/// </summary>
/// <param name="status">HTTP status</param>
/// <param name="statusPhrase"> HTTP status phrase</param>
/// <param name="protocol">Protocol version</param>
public HttpResponse SetBegin(int status, string statusPhrase, string protocol)
{
// Clear the HTTP response cache
Clear();
// Append the HTTP response protocol version
_cache.Append(protocol);
_protocol = protocol;
_cache.Append(" ");
// Append the HTTP response status
_cache.Append(status.ToString());
Status = status;
_cache.Append(" ");
// Append the HTTP response status phrase
_cache.Append(statusPhrase);
_statusPhrase = statusPhrase;
_cache.Append("\r\n");
return this;
}
/// <summary>
/// Set the HTTP response content type
/// </summary>
/// <param name="extension">Content extension</param>
public HttpResponse SetContentType(string extension)
{
// Try to lookup the content type in mime table
if (_mimeTable.TryGetValue(extension, out string mime))
return SetHeader("Content-Type", mime);
return this;
}
/// <summary>
/// Set the HTTP response header
/// </summary>
/// <param name="key">Header key</param>
/// <param name="value">Header value</param>
public HttpResponse SetHeader(string key, string value)
{
// Append the HTTP response header's key
_cache.Append(key);
_cache.Append(": ");
// Append the HTTP response header's value
_cache.Append(value);
_cache.Append("\r\n");
// Add the header to the corresponding collection
_headers.Add((key, value));
return this;
}
/// <summary>
/// Set the HTTP response cookie
/// </summary>
/// <param name="name">Cookie name</param>
/// <param name="value">Cookie value</param>
/// <param name="maxAge">Cookie age in seconds until it expires (default is 86400)</param>
/// <param name="path">Cookie path (default is "")</param>
/// <param name="domain">Cookie domain (default is "")</param>
/// <param name="secure">Cookie secure flag (default is true)</param>
/// <param name="strict">Cookie strict flag (default is true)</param>
/// <param name="httpOnly">Cookie HTTP-only flag (default is true)</param>
public HttpResponse SetCookie(string name, string value, int maxAge = 86400, string path = "", string domain = "", bool secure = true, bool strict = true, bool httpOnly = true)
{
string key = "Set-Cookie";
// Append the HTTP response header's key
_cache.Append(key);
_cache.Append(": ");
// Append the HTTP response header's value
int valueIndex = (int)_cache.Size;
// Append cookie
_cache.Append(name);
_cache.Append("=");
_cache.Append(value);
_cache.Append("; Max-Age=");
_cache.Append(maxAge.ToString());
if (!string.IsNullOrEmpty(domain))
{
_cache.Append("; Domain=");
_cache.Append(domain);
}
if (!string.IsNullOrEmpty(path))
{
_cache.Append("; Path=");
_cache.Append(path);
}
if (secure)
_cache.Append("; Secure");
if (strict)
_cache.Append("; SameSite=Strict");
if (httpOnly)
_cache.Append("; HttpOnly");
int valueSize = (int)_cache.Size - valueIndex;
string cookie = _cache.ExtractString(valueIndex, valueSize);
_cache.Append("\r\n");
// Add the header to the corresponding collection
_headers.Add((key, cookie));
return this;
}
/// <summary>
/// Set the HTTP response body
/// </summary>
/// <param name="body">Body string content (default is "")</param>
public HttpResponse SetBody(string body = "") => SetBody(body.AsSpan());
/// <summary>
/// Set the HTTP response body
/// </summary>
/// <param name="body">Body string content as a span of characters</param>
public HttpResponse SetBody(ReadOnlySpan<char> body)
{
int length = body.IsEmpty ? 0 : Encoding.UTF8.GetByteCount(body);
// Append content length header
SetHeader("Content-Length", length.ToString());
_cache.Append("\r\n");
int index = (int)_cache.Size;
// Append the HTTP response body
_cache.Append(body);
_bodyIndex = index;
_bodySize = length;
_bodyLength = length;
_bodyLengthProvided = true;
return this;
}
/// <summary>
/// Set the HTTP response body
/// </summary>
/// <param name="body">Body binary content</param>
public HttpResponse SetBody(byte[] body) => SetBody(body.AsSpan());
/// <summary>
/// Set the HTTP response body
/// </summary>
/// <param name="body">Body binary content as a span of bytes</param>
public HttpResponse SetBody(ReadOnlySpan<byte> body)
{
// Append content length header
SetHeader("Content-Length", body.Length.ToString());
_cache.Append("\r\n");
int index = (int)_cache.Size;
// Append the HTTP response body
_cache.Append(body);
_bodyIndex = index;
_bodySize = body.Length;
_bodyLength = body.Length;
_bodyLengthProvided = true;
return this;
}
/// <summary>
/// Set the HTTP response body length
/// </summary>
/// <param name="length">Body length</param>
public HttpResponse SetBodyLength(int length)
{
// Append content length header
SetHeader("Content-Length", length.ToString());
_cache.Append("\r\n");
int index = (int)_cache.Size;
// Clear the HTTP response body
_bodyIndex = index;
_bodySize = 0;
_bodyLength = length;
_bodyLengthProvided = true;
return this;
}
/// <summary>
/// Make OK response
/// </summary>
/// <param name="status">OK status (default is 200 (OK))</param>
public HttpResponse MakeOkResponse(int status = 200)
{
Clear();
SetBegin(status);
SetBody();
return this;
}
/// <summary>
/// Make ERROR response
/// </summary>
/// <param name="content">Error content (default is "")</param>
/// <param name="contentType">Error content type (default is "text/plain; charset=UTF-8")</param>
public HttpResponse MakeErrorResponse(string content = "", string contentType = "text/plain; charset=UTF-8")
{
return MakeErrorResponse(500, content, contentType);
}
/// <summary>
/// Make ERROR response
/// </summary>
/// <param name="status">Error status</param>
/// <param name="content">Error content (default is "")</param>
/// <param name="contentType">Error content type (default is "text/plain; charset=UTF-8")</param>
public HttpResponse MakeErrorResponse(int status, string content = "", string contentType = "text/plain; charset=UTF-8")
{
Clear();
SetBegin(status);
if (!string.IsNullOrEmpty(contentType))
SetHeader("Content-Type", contentType);
SetBody(content);
return this;
}
/// <summary>
/// Make HEAD response
/// </summary>
public HttpResponse MakeHeadResponse()
{
Clear();
SetBegin(200);
SetBody();
return this;
}
/// <summary>
/// Make GET response
/// </summary>
/// <param name="content">String content (default is "")</param>
/// <param name="contentType">Content type (default is "text/plain; charset=UTF-8")</param>
public HttpResponse MakeGetResponse(string content = "", string contentType = "text/plain; charset=UTF-8") => MakeGetResponse(content.AsSpan(), contentType);
/// <summary>
/// Make GET response
/// </summary>
/// <param name="content">String content as a span of characters</param>
/// <param name="contentType">Content type (default is "text/plain; charset=UTF-8")</param>
public HttpResponse MakeGetResponse(ReadOnlySpan<char> content, string contentType = "text/plain; charset=UTF-8")
{
Clear();
SetBegin(200);
if (!string.IsNullOrEmpty(contentType))
SetHeader("Content-Type", contentType);
SetBody(content);
return this;
}
/// <summary>
/// Make GET response
/// </summary>
/// <param name="content">Binary content</param>
/// <param name="contentType">Content type (default is "")</param>
public HttpResponse MakeGetResponse(byte[] content, string contentType = "") => MakeGetResponse(content.AsSpan(), contentType);
/// <summary>
/// Make GET response
/// </summary>
/// <param name="content">Binary content as a span of bytes</param>
/// <param name="contentType">Content type (default is "")</param>
public HttpResponse MakeGetResponse(ReadOnlySpan<byte> content, string contentType = "")
{
Clear();
SetBegin(200);
if (!string.IsNullOrEmpty(contentType))
SetHeader("Content-Type", contentType);
SetBody(content);
return this;
}
/// <summary>
/// Make OPTIONS response
/// </summary>
/// <param name="allow">Allow methods (default is "HEAD,GET,POST,PUT,DELETE,OPTIONS,TRACE")</param>
public HttpResponse MakeOptionsResponse(string allow = "HEAD,GET,POST,PUT,DELETE,OPTIONS,TRACE")
{
Clear();
SetBegin(200);
SetHeader("Allow", allow);
SetBody();
return this;
}
/// <summary>
/// Make TRACE response
/// </summary>
/// <param name="content">String content</param>
public HttpResponse MakeTraceResponse(string content) => MakeTraceResponse(content.AsSpan());
/// <summary>
/// Make TRACE response
/// </summary>
/// <param name="content">String content as a span of characters</param>
public HttpResponse MakeTraceResponse(ReadOnlySpan<char> content)
{
Clear();
SetBegin(200);
SetHeader("Content-Type", "message/http");
SetBody(content);
return this;
}
/// <summary>
/// Make TRACE response
/// </summary>
/// <param name="content">Binary content</param>
public HttpResponse MakeTraceResponse(byte[] content) => MakeTraceResponse(content.AsSpan());
/// <summary>
/// Make TRACE response
/// </summary>
/// <param name="content">Binary content as a span of bytes</param>
public HttpResponse MakeTraceResponse(ReadOnlySpan<byte> content)
{
Clear();
SetBegin(200);
SetHeader("Content-Type", "message/http");
SetBody(content);
return this;
}
/// <summary>
/// Make TRACE response
/// </summary>
/// <param name="request">HTTP request</param>
public HttpResponse MakeTraceResponse(HttpRequest request) => MakeTraceResponse(request.Cache.AsSpan());
// HTTP response status phrase
private string _statusPhrase;
// HTTP response protocol
private string _protocol;
// HTTP response headers
private List<(string, string)> _headers = new List<(string, string)>();
// HTTP response body
private int _bodyIndex;
private int _bodySize;
private int _bodyLength;
private bool _bodyLengthProvided;
// HTTP response cache
private Buffer _cache = new Buffer();
private int _cacheSize;
// HTTP response mime table
private static readonly Dictionary<string, string> _mimeTable;
// Is pending parts of HTTP response
internal bool IsPendingHeader()
{
return (!IsErrorSet && (_bodyIndex == 0));
}
internal bool IsPendingBody()
{
return (!IsErrorSet && (_bodyIndex > 0) && (_bodySize > 0));
}
// Receive parts of HTTP response
internal bool ReceiveHeader(byte[] buffer, int offset, int size)
{
// Update the request cache
_cache.Append(buffer, offset, size);
// Try to seek for HTTP header separator
for (int i = _cacheSize; i < (int)_cache.Size; i++)
{
// Check for the request cache out of bounds
if ((i + 3) >= (int)_cache.Size)
break;
// Check for the header separator
if ((_cache[i + 0] == '\r') && (_cache[i + 1] == '\n') && (_cache[i + 2] == '\r') && (_cache[i + 3] == '\n'))
{
int index = 0;
// Set the error flag for a while...
IsErrorSet = true;
// Parse protocol version
int protocolIndex = index;
int protocolSize = 0;
while (_cache[index] != ' ')
{
protocolSize++;
index++;
if (index >= (int)_cache.Size)
return false;
}
index++;
if ((index >= (int)_cache.Size))
return false;
_protocol = _cache.ExtractString(protocolIndex, protocolSize);
// Parse status code
int statusIndex = index;
int statusSize = 0;
while (_cache[index] != ' ')
{
if ((_cache[index] < '0') || (_cache[index] > '9'))
return false;
statusSize++;
index++;
if (index >= (int)_cache.Size)
return false;
}
Status = 0;
for (int j = statusIndex; j < (statusIndex + statusSize); j++)
{
Status *= 10;
Status += _cache[j] - '0';
}
index++;
if (index >= (int)_cache.Size)
return false;
// Parse status phrase
int statusPhraseIndex = index;
int statusPhraseSize = 0;
while (_cache[index] != '\r')
{
statusPhraseSize++;
index++;
if (index >= (int)_cache.Size)
return false;
}
index++;
if ((index >= (int)_cache.Size) || (_cache[index] != '\n'))
return false;
index++;
if (index >= (int)_cache.Size)
return false;
_statusPhrase = _cache.ExtractString(statusPhraseIndex, statusPhraseSize);
// Parse headers
while ((index < (int)_cache.Size) && (index < i))
{
// Parse header name
int headerNameIndex = index;
int headerNameSize = 0;
while (_cache[index] != ':')
{
headerNameSize++;
index++;
if (index >= i)
break;
if (index >= (int)_cache.Size)
return false;
}
index++;
if (index >= i)
break;
if (index >= (int)_cache.Size)
return false;
// Skip all prefix space characters
while (char.IsWhiteSpace((char)_cache[index]))
{
index++;
if (index >= i)
break;
if (index >= (int)_cache.Size)
return false;
}
// Parse header value
int headerValueIndex = index;
int headerValueSize = 0;
while (_cache[index] != '\r')
{
headerValueSize++;
index++;
if (index >= i)
break;
if (index >= (int)_cache.Size)
return false;
}
index++;
if ((index >= (int)_cache.Size) || (_cache[index] != '\n'))
return false;
index++;
if (index >= (int)_cache.Size)
return false;
// Validate header name and value (sometimes value can be empty)
if (headerNameSize == 0)
return false;
// Add a new header
string headerName = _cache.ExtractString(headerNameIndex, headerNameSize);
string headerValue = _cache.ExtractString(headerValueIndex, headerValueSize);
_headers.Add((headerName, headerValue));
// Try to find the body content length
if (string.Compare(headerName, "Content-Length", StringComparison.OrdinalIgnoreCase) == 0)
{
_bodyLength = 0;
for (int j = headerValueIndex; j < (headerValueIndex + headerValueSize); j++)
{
if ((_cache[j] < '0') || (_cache[j] > '9'))
return false;
_bodyLength *= 10;
_bodyLength += _cache[j] - '0';
_bodyLengthProvided = true;
}
}
}
// Reset the error flag
IsErrorSet = false;
// Update the body index and size
_bodyIndex = i + 4;
_bodySize = (int)_cache.Size - i - 4;
// Update the parsed cache size
_cacheSize = (int)_cache.Size;
return true;
}
}
// Update the parsed cache size
_cacheSize = ((int)_cache.Size >= 3) ? ((int)_cache.Size - 3) : 0;
return false;
}
internal bool ReceiveBody(byte[] buffer, int offset, int size)
{
// Update the request cache
_cache.Append(buffer, offset, size);
// Update the parsed cache size
_cacheSize = (int)_cache.Size;
// Update body size
_bodySize += size;
// Check if the body length was provided
if (_bodyLengthProvided)
{
// Was the body fully received?
if (_bodySize >= _bodyLength)
{
_bodySize = _bodyLength;
return true;
}
}
else
{
// Check the body content to find the response body end
if (_bodySize >= 4)
{
int index = _bodyIndex + _bodySize - 4;
// Was the body fully received?
if ((_cache[index + 0] == '\r') && (_cache[index + 1] == '\n') && (_cache[index + 2] == '\r') &&
(_cache[index + 3] == '\n'))
{
_bodyLength = _bodySize;
return true;
}
}
}
// Body was received partially...
return false;
}
}
}