Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_chunked_filter_module.c @ 8240:43f3574b3e6f quic
QUIC: fixed handling of clients connected to wildcard address.
The patch replaces c->send() occurences with c->send_chain(), because the
latter accounts for the local address, which may be different if the wildcard
listener is used.
Previously, server sent response to client using address different from
one client connected to.
author | Vladimir Homutov <vl@nginx.com> |
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date | Mon, 07 Dec 2020 14:06:00 +0300 |
parents | 1efee5e4194c |
children |
rev | line source |
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441
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1 |
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2 /* |
444
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_http.h> |
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11 |
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12 |
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13 typedef struct { |
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14 ngx_chain_t *free; |
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15 ngx_chain_t *busy; |
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16 } ngx_http_chunked_filter_ctx_t; |
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17 |
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18 |
681 | 19 static ngx_int_t ngx_http_chunked_filter_init(ngx_conf_t *cf); |
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20 static ngx_chain_t *ngx_http_chunked_create_trailers(ngx_http_request_t *r, |
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21 ngx_http_chunked_filter_ctx_t *ctx); |
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22 |
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23 |
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24 static ngx_http_module_t ngx_http_chunked_filter_module_ctx = { |
509 | 25 NULL, /* preconfiguration */ |
681 | 26 ngx_http_chunked_filter_init, /* postconfiguration */ |
177
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27 |
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28 NULL, /* create main configuration */ |
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29 NULL, /* init main configuration */ |
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30 |
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31 NULL, /* create server configuration */ |
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32 NULL, /* merge server configuration */ |
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33 |
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34 NULL, /* create location configuration */ |
629 | 35 NULL /* merge location configuration */ |
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36 }; |
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37 |
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38 |
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39 ngx_module_t ngx_http_chunked_filter_module = { |
509 | 40 NGX_MODULE_V1, |
99
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41 &ngx_http_chunked_filter_module_ctx, /* module context */ |
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42 NULL, /* module directives */ |
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43 NGX_HTTP_MODULE, /* module type */ |
541 | 44 NULL, /* init master */ |
681 | 45 NULL, /* init module */ |
541 | 46 NULL, /* init process */ |
47 NULL, /* init thread */ | |
48 NULL, /* exit thread */ | |
49 NULL, /* exit process */ | |
50 NULL, /* exit master */ | |
51 NGX_MODULE_V1_PADDING | |
99
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52 }; |
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53 |
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54 |
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55 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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56 static ngx_http_output_body_filter_pt ngx_http_next_body_filter; |
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57 |
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58 |
501 | 59 static ngx_int_t |
60 ngx_http_chunked_header_filter(ngx_http_request_t *r) | |
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61 { |
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62 ngx_http_core_loc_conf_t *clcf; |
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63 ngx_http_chunked_filter_ctx_t *ctx; |
3484 | 64 |
615 | 65 if (r->headers_out.status == NGX_HTTP_NOT_MODIFIED |
66 || r->headers_out.status == NGX_HTTP_NO_CONTENT | |
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67 || r->headers_out.status < NGX_HTTP_OK |
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68 || r != r->main |
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69 || r->method == NGX_HTTP_HEAD) |
615 | 70 { |
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71 return ngx_http_next_header_filter(r); |
135
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72 } |
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73 |
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74 if (r->headers_out.content_length_n == -1 |
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75 || r->expect_trailers) |
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76 { |
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77 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
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78 |
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79 if (r->http_version >= NGX_HTTP_VERSION_11 |
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80 && clcf->chunked_transfer_encoding) |
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81 { |
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82 if (r->expect_trailers) { |
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83 ngx_http_clear_content_length(r); |
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84 } |
3484 | 85 |
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86 r->chunked = 1; |
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87 |
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88 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_chunked_filter_ctx_t)); |
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89 if (ctx == NULL) { |
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90 return NGX_ERROR; |
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91 } |
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92 |
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93 ngx_http_set_ctx(r, ctx, ngx_http_chunked_filter_module); |
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94 |
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95 } else if (r->headers_out.content_length_n == -1) { |
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96 r->keepalive = 0; |
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97 } |
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98 } |
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100 return ngx_http_next_header_filter(r); |
99
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101 } |
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102 |
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103 |
501 | 104 static ngx_int_t |
105 ngx_http_chunked_body_filter(ngx_http_request_t *r, ngx_chain_t *in) | |
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106 { |
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107 u_char *chunk; |
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108 off_t size; |
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109 ngx_int_t rc; |
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110 ngx_buf_t *b; |
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111 ngx_chain_t *out, *cl, *tl, **ll; |
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112 ngx_http_chunked_filter_ctx_t *ctx; |
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113 |
483 | 114 if (in == NULL || !r->chunked || r->header_only) { |
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115 return ngx_http_next_body_filter(r, in); |
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116 } |
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117 |
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118 ctx = ngx_http_get_module_ctx(r, ngx_http_chunked_filter_module); |
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119 |
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120 out = NULL; |
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121 ll = &out; |
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122 |
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123 size = 0; |
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124 cl = in; |
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125 |
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126 for ( ;; ) { |
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127 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
6480 | 128 "http chunk: %O", ngx_buf_size(cl->buf)); |
336
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129 |
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130 size += ngx_buf_size(cl->buf); |
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131 |
667 | 132 if (cl->buf->flush |
133 || cl->buf->sync | |
134 || ngx_buf_in_memory(cl->buf) | |
135 || cl->buf->in_file) | |
136 { | |
501 | 137 tl = ngx_alloc_chain_link(r->pool); |
138 if (tl == NULL) { | |
461 | 139 return NGX_ERROR; |
140 } | |
141 | |
452 | 142 tl->buf = cl->buf; |
143 *ll = tl; | |
144 ll = &tl->next; | |
145 } | |
99
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146 |
155
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147 if (cl->next == NULL) { |
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148 break; |
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149 } |
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150 |
155
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151 cl = cl->next; |
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152 } |
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153 |
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154 if (size) { |
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155 tl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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156 if (tl == NULL) { |
455 | 157 return NGX_ERROR; |
158 } | |
159 | |
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160 b = tl->buf; |
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161 chunk = b->start; |
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162 |
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163 if (chunk == NULL) { |
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164 /* the "0000000000000000" is 64-bit hexadecimal string */ |
501 | 165 |
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166 chunk = ngx_palloc(r->pool, sizeof("0000000000000000" CRLF) - 1); |
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167 if (chunk == NULL) { |
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168 return NGX_ERROR; |
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169 } |
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170 |
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171 b->start = chunk; |
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172 b->end = chunk + sizeof("0000000000000000" CRLF) - 1; |
455 | 173 } |
174 | |
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175 b->tag = (ngx_buf_tag_t) &ngx_http_chunked_filter_module; |
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176 b->memory = 0; |
455 | 177 b->temporary = 1; |
178 b->pos = chunk; | |
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179 b->last = ngx_sprintf(chunk, "%xO" CRLF, size); |
455 | 180 |
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181 tl->next = out; |
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182 out = tl; |
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183 } |
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184 |
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185 if (cl->buf->last_buf) { |
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186 tl = ngx_http_chunked_create_trailers(r, ctx); |
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187 if (tl == NULL) { |
461 | 188 return NGX_ERROR; |
189 } | |
4128 | 190 |
343
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191 cl->buf->last_buf = 0; |
336
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192 |
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193 *ll = tl; |
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194 |
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195 if (size == 0) { |
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196 tl->buf->pos += 2; |
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197 } |
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198 |
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199 } else if (size > 0) { |
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200 tl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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201 if (tl == NULL) { |
461 | 202 return NGX_ERROR; |
203 } | |
204 | |
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205 b = tl->buf; |
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206 |
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207 b->tag = (ngx_buf_tag_t) &ngx_http_chunked_filter_module; |
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208 b->temporary = 0; |
343
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209 b->memory = 1; |
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210 b->pos = (u_char *) CRLF; |
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211 b->last = b->pos + 2; |
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212 |
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213 *ll = tl; |
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214 |
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215 } else { |
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216 *ll = NULL; |
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217 } |
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218 |
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219 rc = ngx_http_next_body_filter(r, out); |
99
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220 |
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221 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, |
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222 (ngx_buf_tag_t) &ngx_http_chunked_filter_module); |
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223 |
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224 return rc; |
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225 } |
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226 |
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227 |
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228 static ngx_chain_t * |
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229 ngx_http_chunked_create_trailers(ngx_http_request_t *r, |
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230 ngx_http_chunked_filter_ctx_t *ctx) |
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231 { |
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232 size_t len; |
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233 ngx_buf_t *b; |
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234 ngx_uint_t i; |
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235 ngx_chain_t *cl; |
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236 ngx_list_part_t *part; |
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237 ngx_table_elt_t *header; |
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238 |
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239 len = 0; |
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240 |
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241 part = &r->headers_out.trailers.part; |
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242 header = part->elts; |
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243 |
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244 for (i = 0; /* void */; i++) { |
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245 |
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246 if (i >= part->nelts) { |
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247 if (part->next == NULL) { |
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248 break; |
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249 } |
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250 |
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251 part = part->next; |
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252 header = part->elts; |
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253 i = 0; |
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254 } |
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255 |
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256 if (header[i].hash == 0) { |
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257 continue; |
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258 } |
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259 |
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260 len += header[i].key.len + sizeof(": ") - 1 |
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261 + header[i].value.len + sizeof(CRLF) - 1; |
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262 } |
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263 |
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264 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); |
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265 if (cl == NULL) { |
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266 return NULL; |
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267 } |
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268 |
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269 b = cl->buf; |
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270 |
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271 b->tag = (ngx_buf_tag_t) &ngx_http_chunked_filter_module; |
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272 b->temporary = 0; |
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273 b->memory = 1; |
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274 b->last_buf = 1; |
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275 |
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276 if (len == 0) { |
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277 b->pos = (u_char *) CRLF "0" CRLF CRLF; |
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278 b->last = b->pos + sizeof(CRLF "0" CRLF CRLF) - 1; |
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279 return cl; |
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280 } |
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281 |
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282 len += sizeof(CRLF "0" CRLF CRLF) - 1; |
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283 |
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284 b->pos = ngx_palloc(r->pool, len); |
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285 if (b->pos == NULL) { |
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286 return NULL; |
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287 } |
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288 |
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289 b->last = b->pos; |
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290 |
8205
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291 *b->last++ = CR; *b->last++ = LF; |
7034
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292 *b->last++ = '0'; |
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293 *b->last++ = CR; *b->last++ = LF; |
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294 |
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295 part = &r->headers_out.trailers.part; |
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296 header = part->elts; |
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297 |
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298 for (i = 0; /* void */; i++) { |
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299 |
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300 if (i >= part->nelts) { |
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301 if (part->next == NULL) { |
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302 break; |
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303 } |
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304 |
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305 part = part->next; |
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306 header = part->elts; |
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307 i = 0; |
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308 } |
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309 |
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310 if (header[i].hash == 0) { |
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311 continue; |
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312 } |
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313 |
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314 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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315 "http trailer: \"%V: %V\"", |
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316 &header[i].key, &header[i].value); |
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317 |
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318 b->last = ngx_copy(b->last, header[i].key.data, header[i].key.len); |
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319 *b->last++ = ':'; *b->last++ = ' '; |
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320 |
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321 b->last = ngx_copy(b->last, header[i].value.data, header[i].value.len); |
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322 *b->last++ = CR; *b->last++ = LF; |
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323 } |
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324 |
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325 *b->last++ = CR; *b->last++ = LF; |
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326 |
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327 return cl; |
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328 } |
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329 |
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330 |
501 | 331 static ngx_int_t |
681 | 332 ngx_http_chunked_filter_init(ngx_conf_t *cf) |
99
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333 { |
155
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334 ngx_http_next_header_filter = ngx_http_top_header_filter; |
99
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335 ngx_http_top_header_filter = ngx_http_chunked_header_filter; |
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336 |
155
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337 ngx_http_next_body_filter = ngx_http_top_body_filter; |
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338 ngx_http_top_body_filter = ngx_http_chunked_body_filter; |
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339 |
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340 return NGX_OK; |
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341 } |