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
|
Transfer-Encoding header
========================
## Trailing space on chunked body
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Content-Type: text/plain
Transfer-Encoding: chunked
25 \r\n\
This is the data in the first chunk
1C
and this is the second one
0 \r\n\
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=12 span[header_field]="Content-Type"
off=30 header_field complete
off=31 len=10 span[header_value]="text/plain"
off=43 header_value complete
off=43 len=17 span[header_field]="Transfer-Encoding"
off=61 header_field complete
off=62 len=7 span[header_value]="chunked"
off=71 header_value complete
off=73 headers complete status=200 v=1/1 flags=208 content_length=0
off=76 error code=12 reason="Invalid character in chunk size"
```
## `chunked` before other transfer-encoding
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Accept: */*
Transfer-Encoding: chunked, deflate
World
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=6 span[header_field]="Accept"
off=24 header_field complete
off=25 len=3 span[header_value]="*/*"
off=30 header_value complete
off=30 len=17 span[header_field]="Transfer-Encoding"
off=48 header_field complete
off=49 len=16 span[header_value]="chunked, deflate"
off=67 header_value complete
off=69 headers complete status=200 v=1/1 flags=200 content_length=0
off=69 len=5 span[body]="World"
```
## multiple transfer-encoding where chunked is not the last one
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Accept: */*
Transfer-Encoding: chunked
Transfer-Encoding: identity
World
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=6 span[header_field]="Accept"
off=24 header_field complete
off=25 len=3 span[header_value]="*/*"
off=30 header_value complete
off=30 len=17 span[header_field]="Transfer-Encoding"
off=48 header_field complete
off=49 len=7 span[header_value]="chunked"
off=58 header_value complete
off=58 len=17 span[header_field]="Transfer-Encoding"
off=76 header_field complete
off=77 len=8 span[header_value]="identity"
off=87 header_value complete
off=89 headers complete status=200 v=1/1 flags=200 content_length=0
off=89 len=5 span[body]="World"
```
## `chunkedchunked` transfer-encoding does not enable chunked enconding
This check that the word `chunked` repeat more than once (with or without spaces) does not mistakenly enables chunked encoding.
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Accept: */*
Transfer-Encoding: chunkedchunked
2
OK
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=6 span[header_field]="Accept"
off=24 header_field complete
off=25 len=3 span[header_value]="*/*"
off=30 header_value complete
off=30 len=17 span[header_field]="Transfer-Encoding"
off=48 header_field complete
off=49 len=14 span[header_value]="chunkedchunked"
off=65 header_value complete
off=67 headers complete status=200 v=1/1 flags=200 content_length=0
off=67 len=1 span[body]="2"
off=68 len=1 span[body]=cr
off=69 len=1 span[body]=lf
off=70 len=2 span[body]="OK"
off=72 len=1 span[body]=cr
off=73 len=1 span[body]=lf
off=74 len=1 span[body]="0"
off=75 len=1 span[body]=cr
off=76 len=1 span[body]=lf
off=77 len=1 span[body]=cr
off=78 len=1 span[body]=lf
```
## Chunk extensions
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Host: localhost
Transfer-encoding: chunked
5;ilovew3;somuchlove=aretheseparametersfor
hello
6;blahblah;blah
world
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=4 span[header_field]="Host"
off=22 header_field complete
off=23 len=9 span[header_value]="localhost"
off=34 header_value complete
off=34 len=17 span[header_field]="Transfer-encoding"
off=52 header_field complete
off=53 len=7 span[header_value]="chunked"
off=62 header_value complete
off=64 headers complete status=200 v=1/1 flags=208 content_length=0
off=66 len=7 span[chunk_extension_name]="ilovew3"
off=74 chunk_extension_name complete
off=74 len=10 span[chunk_extension_name]="somuchlove"
off=85 chunk_extension_name complete
off=85 len=21 span[chunk_extension_value]="aretheseparametersfor"
off=107 chunk_extension_value complete
off=108 chunk header len=5
off=108 len=5 span[body]="hello"
off=115 chunk complete
off=117 len=8 span[chunk_extension_name]="blahblah"
off=126 chunk_extension_name complete
off=126 len=4 span[chunk_extension_name]="blah"
off=131 chunk_extension_name complete
off=132 chunk header len=6
off=132 len=6 span[body]=" world"
off=140 chunk complete
off=143 chunk header len=0
off=145 chunk complete
off=145 message complete
```
## No semicolon before chunk extensions
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Host: localhost
Transfer-encoding: chunked
2 erfrferferf
aa
0 rrrr
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=4 span[header_field]="Host"
off=22 header_field complete
off=23 len=9 span[header_value]="localhost"
off=34 header_value complete
off=34 len=17 span[header_field]="Transfer-encoding"
off=52 header_field complete
off=53 len=7 span[header_value]="chunked"
off=62 header_value complete
off=64 headers complete status=200 v=1/1 flags=208 content_length=0
off=66 error code=12 reason="Invalid character in chunk size"
```
## No extension after semicolon
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Host: localhost
Transfer-encoding: chunked
2;
aa
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=4 span[header_field]="Host"
off=22 header_field complete
off=23 len=9 span[header_value]="localhost"
off=34 header_value complete
off=34 len=17 span[header_field]="Transfer-encoding"
off=52 header_field complete
off=53 len=7 span[header_value]="chunked"
off=62 header_value complete
off=64 headers complete status=200 v=1/1 flags=208 content_length=0
off=67 error code=2 reason="Invalid character in chunk extensions"
```
## Chunk extensions quoting
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Host: localhost
Transfer-Encoding: chunked
5;ilovew3="I love; extensions";somuchlove="aretheseparametersfor";blah;foo=bar
hello
6;blahblah;blah
world
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=4 span[header_field]="Host"
off=22 header_field complete
off=23 len=9 span[header_value]="localhost"
off=34 header_value complete
off=34 len=17 span[header_field]="Transfer-Encoding"
off=52 header_field complete
off=53 len=7 span[header_value]="chunked"
off=62 header_value complete
off=64 headers complete status=200 v=1/1 flags=208 content_length=0
off=66 len=7 span[chunk_extension_name]="ilovew3"
off=74 chunk_extension_name complete
off=74 len=20 span[chunk_extension_value]=""I love; extensions""
off=94 chunk_extension_value complete
off=95 len=10 span[chunk_extension_name]="somuchlove"
off=106 chunk_extension_name complete
off=106 len=23 span[chunk_extension_value]=""aretheseparametersfor""
off=129 chunk_extension_value complete
off=130 len=4 span[chunk_extension_name]="blah"
off=135 chunk_extension_name complete
off=135 len=3 span[chunk_extension_name]="foo"
off=139 chunk_extension_name complete
off=139 len=3 span[chunk_extension_value]="bar"
off=143 chunk_extension_value complete
off=144 chunk header len=5
off=144 len=5 span[body]="hello"
off=151 chunk complete
off=153 len=8 span[chunk_extension_name]="blahblah"
off=162 chunk_extension_name complete
off=162 len=4 span[chunk_extension_name]="blah"
off=167 chunk_extension_name complete
off=168 chunk header len=6
off=168 len=6 span[body]=" world"
off=176 chunk complete
off=179 chunk header len=0
```
## Unbalanced chunk extensions quoting
<!-- meta={"type": "response"} -->
```http
HTTP/1.1 200 OK
Host: localhost
Transfer-Encoding: chunked
5;ilovew3="abc";somuchlove="def; ghi
hello
6;blahblah;blah
world
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=4 span[header_field]="Host"
off=22 header_field complete
off=23 len=9 span[header_value]="localhost"
off=34 header_value complete
off=34 len=17 span[header_field]="Transfer-Encoding"
off=52 header_field complete
off=53 len=7 span[header_value]="chunked"
off=62 header_value complete
off=64 headers complete status=200 v=1/1 flags=208 content_length=0
off=66 len=7 span[chunk_extension_name]="ilovew3"
off=74 chunk_extension_name complete
off=74 len=5 span[chunk_extension_value]=""abc""
off=79 chunk_extension_value complete
off=80 len=10 span[chunk_extension_name]="somuchlove"
off=91 chunk_extension_name complete
off=91 len=9 span[chunk_extension_value]=""def; ghi"
off=101 error code=2 reason="Invalid character in chunk extensions quoted value"
```
## Invalid OBS fold after chunked value
<!-- meta={"type": "response-lenient-headers" } -->
```http
HTTP/1.1 200 OK
Transfer-Encoding: chunked
abc
5
World
0
```
```log
off=0 message begin
off=5 len=3 span[version]="1.1"
off=8 version complete
off=13 len=2 span[status]="OK"
off=17 status complete
off=17 len=17 span[header_field]="Transfer-Encoding"
off=35 header_field complete
off=36 len=7 span[header_value]="chunked"
off=45 len=5 span[header_value]=" abc"
off=52 header_value complete
off=54 headers complete status=200 v=1/1 flags=200 content_length=0
off=54 len=1 span[body]="5"
off=55 len=1 span[body]=cr
off=56 len=1 span[body]=lf
off=57 len=5 span[body]="World"
off=62 len=1 span[body]=cr
off=63 len=1 span[body]=lf
off=64 len=1 span[body]="0"
off=65 len=1 span[body]=cr
off=66 len=1 span[body]=lf
off=67 len=1 span[body]=cr
off=68 len=1 span[body]=lf
```
|
