Mercurial > hg > nginx-quic
annotate src/http/ngx_http_request_body.c @ 4009:3183165283cc
Fixing proxy_set_body and proxy_pass_request_body with SSL.
Flush flag wasn't set in constructed buffer and this prevented any data
from being actually sent to upstream due to SSL buffering. Make sure
we always set flush in the last buffer we are going to sent.
See here for report:
http://nginx.org/pipermail/nginx-ru/2011-June/041552.html
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Thu, 18 Aug 2011 16:34:24 +0000 |
parents | 87f47e05fc82 |
children | cf334deeea66 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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11 |
509 | 12 static void ngx_http_read_client_request_body_handler(ngx_http_request_t *r); |
13 static ngx_int_t ngx_http_do_read_client_request_body(ngx_http_request_t *r); | |
633 | 14 static ngx_int_t ngx_http_write_request_body(ngx_http_request_t *r, |
15 ngx_chain_t *body); | |
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16 static ngx_int_t ngx_http_read_discarded_request_body(ngx_http_request_t *r); |
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17 static ngx_int_t ngx_http_test_expect(ngx_http_request_t *r); |
633 | 18 |
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19 |
479 | 20 /* |
21 * on completion ngx_http_read_client_request_body() adds to | |
22 * r->request_body->bufs one or two bufs: | |
23 * *) one memory buf that was preread in r->header_in; | |
24 * *) one memory or file buf that contains the rest of the body | |
25 */ | |
83
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26 |
501 | 27 ngx_int_t |
28 ngx_http_read_client_request_body(ngx_http_request_t *r, | |
29 ngx_http_client_body_handler_pt post_handler) | |
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30 { |
663 | 31 size_t preread; |
32 ssize_t size; | |
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33 ngx_buf_t *b; |
633 | 34 ngx_chain_t *cl, **next; |
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35 ngx_temp_file_t *tf; |
479 | 36 ngx_http_request_body_t *rb; |
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37 ngx_http_core_loc_conf_t *clcf; |
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38 |
3049 | 39 r->main->count++; |
40 | |
537 | 41 if (r->request_body || r->discard_body) { |
509 | 42 post_handler(r); |
43 return NGX_OK; | |
44 } | |
45 | |
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46 if (ngx_http_test_expect(r) != NGX_OK) { |
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47 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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48 } |
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49 |
501 | 50 rb = ngx_pcalloc(r->pool, sizeof(ngx_http_request_body_t)); |
51 if (rb == NULL) { | |
479 | 52 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
53 } | |
54 | |
55 r->request_body = rb; | |
56 | |
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57 if (r->headers_in.content_length_n < 0) { |
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58 post_handler(r); |
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59 return NGX_OK; |
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60 } |
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61 |
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62 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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63 |
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64 if (r->headers_in.content_length_n == 0) { |
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65 |
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66 if (r->request_body_in_file_only) { |
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67 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); |
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68 if (tf == NULL) { |
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69 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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70 } |
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71 |
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72 tf->file.fd = NGX_INVALID_FILE; |
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73 tf->file.log = r->connection->log; |
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74 tf->path = clcf->client_body_temp_path; |
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75 tf->pool = r->pool; |
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76 tf->warn = "a client request body is buffered to a temporary file"; |
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77 tf->log_level = r->request_body_file_log_level; |
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78 tf->persistent = r->request_body_in_persistent_file; |
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79 tf->clean = r->request_body_in_clean_file; |
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80 |
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81 if (r->request_body_file_group_access) { |
1046 | 82 tf->access = 0660; |
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83 } |
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84 |
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85 rb->temp_file = tf; |
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86 |
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87 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool, |
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88 tf->persistent, tf->clean, tf->access) |
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89 != NGX_OK) |
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90 { |
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91 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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92 } |
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93 } |
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94 |
479 | 95 post_handler(r); |
1290 | 96 |
479 | 97 return NGX_OK; |
98 } | |
99 | |
100 rb->post_handler = post_handler; | |
101 | |
102 /* | |
103 * set by ngx_pcalloc(): | |
104 * | |
105 * rb->bufs = NULL; | |
106 * rb->buf = NULL; | |
107 * rb->rest = 0; | |
108 */ | |
109 | |
633 | 110 preread = r->header_in->last - r->header_in->pos; |
83
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111 |
633 | 112 if (preread) { |
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113 |
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114 /* there is the pre-read part of the request body */ |
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115 |
633 | 116 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
117 "http client request body preread %uz", preread); | |
118 | |
501 | 119 b = ngx_calloc_buf(r->pool); |
120 if (b == NULL) { | |
479 | 121 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
122 } | |
82
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123 |
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124 b->temporary = 1; |
633 | 125 b->start = r->header_in->pos; |
126 b->pos = r->header_in->pos; | |
127 b->last = r->header_in->last; | |
128 b->end = r->header_in->end; | |
82
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129 |
501 | 130 rb->bufs = ngx_alloc_chain_link(r->pool); |
131 if (rb->bufs == NULL) { | |
479 | 132 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
133 } | |
134 | |
135 rb->bufs->buf = b; | |
136 rb->bufs->next = NULL; | |
160
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137 |
667 | 138 rb->buf = b; |
139 | |
665 | 140 if ((off_t) preread >= r->headers_in.content_length_n) { |
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141 |
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142 /* the whole request body was pre-read */ |
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143 |
663 | 144 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
475 | 145 r->request_length += r->headers_in.content_length_n; |
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146 b->last = r->header_in->pos; |
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147 |
633 | 148 if (r->request_body_in_file_only) { |
149 if (ngx_http_write_request_body(r, rb->bufs) != NGX_OK) { | |
150 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
151 } | |
152 } | |
153 | |
479 | 154 post_handler(r); |
299
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155 |
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156 return NGX_OK; |
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157 } |
162
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158 |
633 | 159 /* |
160 * to not consider the body as pipelined request in | |
161 * ngx_http_set_keepalive() | |
162 */ | |
162
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163 r->header_in->pos = r->header_in->last; |
633 | 164 |
165 r->request_length += preread; | |
166 | |
167 rb->rest = r->headers_in.content_length_n - preread; | |
168 | |
665 | 169 if (rb->rest <= (off_t) (b->end - b->last)) { |
633 | 170 |
171 /* the whole request body may be placed in r->header_in */ | |
172 | |
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173 rb->to_write = rb->bufs; |
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174 |
633 | 175 r->read_event_handler = ngx_http_read_client_request_body_handler; |
176 | |
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177 return ngx_http_do_read_client_request_body(r); |
633 | 178 } |
179 | |
180 next = &rb->bufs->next; | |
181 | |
182 } else { | |
183 b = NULL; | |
184 rb->rest = r->headers_in.content_length_n; | |
185 next = &rb->bufs; | |
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186 } |
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187 |
633 | 188 size = clcf->client_body_buffer_size; |
189 size += size >> 2; | |
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190 |
663 | 191 if (rb->rest < size) { |
192 size = (ssize_t) rb->rest; | |
160
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193 |
633 | 194 if (r->request_body_in_single_buf) { |
195 size += preread; | |
196 } | |
197 | |
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198 } else { |
303
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199 size = clcf->client_body_buffer_size; |
633 | 200 |
201 /* disable copying buffer for r->request_body_in_single_buf */ | |
202 b = NULL; | |
160
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203 } |
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204 |
501 | 205 rb->buf = ngx_create_temp_buf(r->pool, size); |
206 if (rb->buf == NULL) { | |
479 | 207 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
208 } | |
160
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209 |
501 | 210 cl = ngx_alloc_chain_link(r->pool); |
211 if (cl == NULL) { | |
479 | 212 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
213 } | |
160
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214 |
479 | 215 cl->buf = rb->buf; |
216 cl->next = NULL; | |
217 | |
633 | 218 if (b && r->request_body_in_single_buf) { |
219 size = b->last - b->pos; | |
220 ngx_memcpy(rb->buf->pos, b->pos, size); | |
221 rb->buf->last += size; | |
222 | |
223 next = &rb->bufs; | |
224 } | |
225 | |
226 *next = cl; | |
227 | |
228 if (r->request_body_in_file_only || r->request_body_in_single_buf) { | |
229 rb->to_write = rb->bufs; | |
160
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230 |
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231 } else { |
633 | 232 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
160
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233 } |
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234 |
509 | 235 r->read_event_handler = ngx_http_read_client_request_body_handler; |
82
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236 |
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237 return ngx_http_do_read_client_request_body(r); |
82
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238 } |
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239 |
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240 |
501 | 241 static void |
509 | 242 ngx_http_read_client_request_body_handler(ngx_http_request_t *r) |
82
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243 { |
509 | 244 ngx_int_t rc; |
293
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245 |
509 | 246 if (r->connection->read->timedout) { |
577 | 247 r->connection->timedout = 1; |
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248 ngx_http_finalize_request(r, NGX_HTTP_REQUEST_TIME_OUT); |
299
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249 return; |
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250 } |
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251 |
509 | 252 rc = ngx_http_do_read_client_request_body(r); |
293
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253 |
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254 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { |
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255 ngx_http_finalize_request(r, rc); |
293
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256 } |
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257 } |
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258 |
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259 |
501 | 260 static ngx_int_t |
509 | 261 ngx_http_do_read_client_request_body(ngx_http_request_t *r) |
293
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262 { |
290
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263 size_t size; |
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264 ssize_t n; |
343
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265 ngx_buf_t *b; |
509 | 266 ngx_connection_t *c; |
479 | 267 ngx_http_request_body_t *rb; |
162
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268 ngx_http_core_loc_conf_t *clcf; |
82
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269 |
509 | 270 c = r->connection; |
479 | 271 rb = r->request_body; |
82
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272 |
292
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273 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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274 "http read client request body"); |
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275 |
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276 for ( ;; ) { |
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277 for ( ;; ) { |
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278 if (rb->buf->last == rb->buf->end) { |
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279 |
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280 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
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281 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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282 } |
479 | 283 |
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284 rb->to_write = rb->bufs->next ? rb->bufs->next : rb->bufs; |
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285 rb->buf->last = rb->buf->start; |
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286 } |
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287 |
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288 size = rb->buf->end - rb->buf->last; |
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289 |
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290 if ((off_t) size > rb->rest) { |
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291 size = (size_t) rb->rest; |
292
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292 } |
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293 |
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294 n = c->recv(c, rb->buf->last, size); |
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295 |
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296 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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297 "http client request body recv %z", n); |
82
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298 |
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299 if (n == NGX_AGAIN) { |
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300 break; |
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301 } |
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302 |
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303 if (n == 0) { |
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304 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
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305 "client closed prematurely connection"); |
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306 } |
292
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307 |
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308 if (n == 0 || n == NGX_ERROR) { |
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309 c->error = 1; |
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310 return NGX_HTTP_BAD_REQUEST; |
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311 } |
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312 |
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313 rb->buf->last += n; |
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314 rb->rest -= n; |
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315 r->request_length += n; |
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316 |
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317 if (rb->rest == 0) { |
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318 break; |
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319 } |
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320 |
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321 if (rb->buf->last < rb->buf->end) { |
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322 break; |
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323 } |
292
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324 } |
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325 |
293
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326 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
1112 | 327 "http client request body rest %O", rb->rest); |
292
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328 |
479 | 329 if (rb->rest == 0) { |
294
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330 break; |
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331 } |
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332 |
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333 if (!c->read->ready) { |
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334 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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335 ngx_add_timer(c->read, clcf->client_body_timeout); |
293
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336 |
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337 if (ngx_handle_read_event(c->read, 0) != NGX_OK) { |
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338 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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339 } |
573 | 340 |
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341 return NGX_AGAIN; |
573 | 342 } |
82
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343 } |
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344 |
573 | 345 if (c->read->timer_set) { |
346 ngx_del_timer(c->read); | |
347 } | |
348 | |
633 | 349 if (rb->temp_file || r->request_body_in_file_only) { |
82
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350 |
160
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351 /* save the last part */ |
479 | 352 |
633 | 353 if (ngx_http_write_request_body(r, rb->to_write) != NGX_OK) { |
293
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354 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
162
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355 } |
160
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356 |
501 | 357 b = ngx_calloc_buf(r->pool); |
358 if (b == NULL) { | |
293
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359 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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360 } |
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361 |
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362 b->in_file = 1; |
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363 b->file_pos = 0; |
479 | 364 b->file_last = rb->temp_file->file.offset; |
365 b->file = &rb->temp_file->file; | |
160
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366 |
479 | 367 if (rb->bufs->next) { |
368 rb->bufs->next->buf = b; | |
160
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369 |
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370 } else { |
479 | 371 rb->bufs->buf = b; |
160
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372 } |
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373 } |
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374 |
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375 if (rb->bufs->next |
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376 && (r->request_body_in_file_only || r->request_body_in_single_buf)) |
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377 { |
633 | 378 rb->bufs = rb->bufs->next; |
379 } | |
380 | |
479 | 381 rb->post_handler(r); |
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382 |
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383 return NGX_OK; |
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384 } |
633 | 385 |
386 | |
387 static ngx_int_t | |
388 ngx_http_write_request_body(ngx_http_request_t *r, ngx_chain_t *body) | |
389 { | |
390 ssize_t n; | |
391 ngx_temp_file_t *tf; | |
392 ngx_http_request_body_t *rb; | |
393 ngx_http_core_loc_conf_t *clcf; | |
394 | |
395 rb = r->request_body; | |
396 | |
397 if (rb->temp_file == NULL) { | |
398 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)); | |
399 if (tf == NULL) { | |
400 return NGX_ERROR; | |
401 } | |
402 | |
403 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); | |
404 | |
405 tf->file.fd = NGX_INVALID_FILE; | |
406 tf->file.log = r->connection->log; | |
407 tf->path = clcf->client_body_temp_path; | |
408 tf->pool = r->pool; | |
409 tf->warn = "a client request body is buffered to a temporary file"; | |
637 | 410 tf->log_level = r->request_body_file_log_level; |
633 | 411 tf->persistent = r->request_body_in_persistent_file; |
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412 tf->clean = r->request_body_in_clean_file; |
633 | 413 |
414 if (r->request_body_file_group_access) { | |
1046 | 415 tf->access = 0660; |
633 | 416 } |
417 | |
418 rb->temp_file = tf; | |
419 } | |
420 | |
421 n = ngx_write_chain_to_temp_file(rb->temp_file, body); | |
422 | |
423 /* TODO: n == 0 or not complete and level event */ | |
424 | |
425 if (n == NGX_ERROR) { | |
426 return NGX_ERROR; | |
427 } | |
428 | |
429 rb->temp_file->offset += n; | |
430 | |
431 return NGX_OK; | |
432 } | |
433 | |
434 | |
435 ngx_int_t | |
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436 ngx_http_discard_request_body(ngx_http_request_t *r) |
633 | 437 { |
438 ssize_t size; | |
439 ngx_event_t *rev; | |
440 | |
673 | 441 if (r != r->main || r->discard_body) { |
633 | 442 return NGX_OK; |
443 } | |
444 | |
2436
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445 if (ngx_http_test_expect(r) != NGX_OK) { |
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446 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
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447 } |
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448 |
633 | 449 rev = r->connection->read; |
450 | |
451 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body"); | |
452 | |
453 if (rev->timer_set) { | |
454 ngx_del_timer(rev); | |
455 } | |
456 | |
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457 if (r->headers_in.content_length_n <= 0 || r->request_body) { |
633 | 458 return NGX_OK; |
459 } | |
460 | |
461 size = r->header_in->last - r->header_in->pos; | |
462 | |
463 if (size) { | |
464 if (r->headers_in.content_length_n > size) { | |
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465 r->header_in->pos += size; |
633 | 466 r->headers_in.content_length_n -= size; |
467 | |
468 } else { | |
663 | 469 r->header_in->pos += (size_t) r->headers_in.content_length_n; |
633 | 470 r->headers_in.content_length_n = 0; |
471 return NGX_OK; | |
472 } | |
473 } | |
474 | |
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475 r->read_event_handler = ngx_http_discarded_request_body_handler; |
633 | 476 |
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477 if (ngx_handle_read_event(rev, 0) != NGX_OK) { |
633 | 478 return NGX_HTTP_INTERNAL_SERVER_ERROR; |
479 } | |
480 | |
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481 if (ngx_http_read_discarded_request_body(r) == NGX_OK) { |
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482 r->lingering_close = 0; |
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483 |
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484 } else { |
3166
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485 r->count++; |
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486 r->discard_body = 1; |
3166
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487 } |
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488 |
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489 return NGX_OK; |
633 | 490 } |
491 | |
492 | |
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493 void |
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494 ngx_http_discarded_request_body_handler(ngx_http_request_t *r) |
633 | 495 { |
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496 ngx_int_t rc; |
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497 ngx_msec_t timer; |
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498 ngx_event_t *rev; |
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499 ngx_connection_t *c; |
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500 ngx_http_core_loc_conf_t *clcf; |
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501 |
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502 c = r->connection; |
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503 rev = c->read; |
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504 |
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505 if (rev->timedout) { |
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506 c->timedout = 1; |
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507 c->error = 1; |
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508 ngx_http_finalize_request(r, NGX_ERROR); |
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509 return; |
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510 } |
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511 |
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512 if (r->lingering_time) { |
1640 | 513 timer = (ngx_msec_t) (r->lingering_time - ngx_time()); |
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514 |
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515 if (timer <= 0) { |
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516 r->discard_body = 0; |
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517 r->lingering_close = 0; |
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518 ngx_http_finalize_request(r, NGX_ERROR); |
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519 return; |
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520 } |
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521 |
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522 } else { |
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523 timer = 0; |
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524 } |
633 | 525 |
1370
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526 rc = ngx_http_read_discarded_request_body(r); |
633 | 527 |
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528 if (rc == NGX_OK) { |
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529 r->discard_body = 0; |
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530 r->lingering_close = 0; |
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531 ngx_http_finalize_request(r, NGX_DONE); |
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532 return; |
633 | 533 } |
534 | |
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535 /* rc == NGX_AGAIN */ |
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536 |
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537 if (ngx_handle_read_event(rev, 0) != NGX_OK) { |
1456 | 538 c->error = 1; |
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539 ngx_http_finalize_request(r, NGX_ERROR); |
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540 return; |
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541 } |
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542 |
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543 if (timer) { |
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544 |
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545 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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546 |
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547 timer *= 1000; |
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548 |
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549 if (timer > clcf->lingering_timeout) { |
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550 timer = clcf->lingering_timeout; |
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551 } |
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552 |
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553 ngx_add_timer(rev, timer); |
633 | 554 } |
555 } | |
556 | |
557 | |
558 static ngx_int_t | |
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559 ngx_http_read_discarded_request_body(ngx_http_request_t *r) |
633 | 560 { |
663 | 561 size_t size; |
562 ssize_t n; | |
633 | 563 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE]; |
564 | |
565 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
566 "http read discarded body"); | |
567 | |
3162 | 568 for ( ;; ) { |
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569 if (r->headers_in.content_length_n == 0) { |
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570 r->read_event_handler = ngx_http_block_reading; |
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571 return NGX_OK; |
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572 } |
633 | 573 |
3162 | 574 if (!r->connection->read->ready) { |
575 return NGX_AGAIN; | |
576 } | |
577 | |
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578 size = (r->headers_in.content_length_n > NGX_HTTP_DISCARD_BUFFER_SIZE) ? |
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579 NGX_HTTP_DISCARD_BUFFER_SIZE: |
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580 (size_t) r->headers_in.content_length_n; |
633 | 581 |
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582 n = r->connection->recv(r->connection, buffer, size); |
633 | 583 |
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584 if (n == NGX_ERROR) { |
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585 r->connection->error = 1; |
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586 return NGX_OK; |
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587 } |
633 | 588 |
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589 if (n == NGX_AGAIN) { |
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590 return NGX_AGAIN; |
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591 } |
633 | 592 |
1422
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593 if (n == 0) { |
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594 return NGX_OK; |
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595 } |
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596 |
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597 r->headers_in.content_length_n -= n; |
3162 | 598 } |
633 | 599 } |
2436
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600 |
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601 |
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602 static ngx_int_t |
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603 ngx_http_test_expect(ngx_http_request_t *r) |
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604 { |
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605 ngx_int_t n; |
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606 ngx_str_t *expect; |
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607 |
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608 if (r->expect_tested |
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609 || r->headers_in.expect == NULL |
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610 || r->http_version < NGX_HTTP_VERSION_11) |
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611 { |
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612 return NGX_OK; |
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613 } |
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614 |
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615 r->expect_tested = 1; |
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616 |
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617 expect = &r->headers_in.expect->value; |
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618 |
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619 if (expect->len != sizeof("100-continue") - 1 |
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620 || ngx_strncasecmp(expect->data, (u_char *) "100-continue", |
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621 sizeof("100-continue") - 1) |
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622 != 0) |
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623 { |
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624 return NGX_OK; |
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625 } |
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626 |
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627 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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628 "send 100 Continue"); |
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629 |
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630 n = r->connection->send(r->connection, |
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631 (u_char *) "HTTP/1.1 100 Continue" CRLF CRLF, |
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632 sizeof("HTTP/1.1 100 Continue" CRLF CRLF) - 1); |
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633 |
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634 if (n == sizeof("HTTP/1.1 100 Continue" CRLF CRLF) - 1) { |
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635 return NGX_OK; |
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636 } |
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637 |
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638 /* we assume that such small packet should be send successfully */ |
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639 |
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640 return NGX_ERROR; |
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641 } |