Mercurial > hg > nginx
annotate src/os/win32/ngx_wsasend_chain.c @ 8713:d981c7bd1da7 quic
README: http3_max_field_size was removed in ae2e68f206f9.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Sun, 07 Mar 2021 00:23:25 +0300 |
parents | 2cd019520210 |
children | ecf2a9002b37 |
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 |
103
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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_event.h> |
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11 |
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12 |
461 | 13 #define NGX_WSABUFS 8 |
14 | |
15 | |
501 | 16 ngx_chain_t * |
17 ngx_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
103
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18 { |
184
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19 int rc; |
292
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20 u_char *prev; |
473 | 21 u_long size, sent, send, prev_send; |
184
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22 ngx_err_t err; |
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23 ngx_event_t *wev; |
461 | 24 ngx_array_t vec; |
501 | 25 ngx_chain_t *cl; |
461 | 26 LPWSABUF wsabuf; |
27 WSABUF wsabufs[NGX_WSABUFS]; | |
184
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28 |
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29 wev = c->write; |
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30 |
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31 if (!wev->ready) { |
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32 return in; |
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33 } |
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34 |
473 | 35 /* the maximum limit size is the maximum u_long value - the page size */ |
36 | |
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37 if (limit == 0 || limit > (off_t) (NGX_MAX_UINT32_VALUE - ngx_pagesize)) { |
473 | 38 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; |
39 } | |
40 | |
461 | 41 send = 0; |
42 | |
184
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43 /* |
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44 * WSABUFs must be 4-byte aligned otherwise |
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45 * WSASend() will return undocumented WSAEINVAL error. |
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46 */ |
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47 |
461 | 48 vec.elts = wsabufs; |
49 vec.size = sizeof(WSABUF); | |
577 | 50 vec.nalloc = NGX_WSABUFS; |
461 | 51 vec.pool = c->pool; |
184
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52 |
461 | 53 for ( ;; ) { |
54 prev = NULL; | |
55 wsabuf = NULL; | |
473 | 56 prev_send = send; |
184
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57 |
461 | 58 vec.nelts = 0; |
184
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59 |
461 | 60 /* create the WSABUF and coalesce the neighbouring bufs */ |
184
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61 |
461 | 62 for (cl = in; |
63 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
64 cl = cl->next) | |
65 { | |
66 if (ngx_buf_special(cl->buf)) { | |
67 continue; | |
68 } | |
184
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69 |
461 | 70 size = cl->buf->last - cl->buf->pos; |
184
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71 |
461 | 72 if (send + size > limit) { |
73 size = (u_long) (limit - send); | |
74 } | |
184
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75 |
461 | 76 if (prev == cl->buf->pos) { |
77 wsabuf->len += cl->buf->last - cl->buf->pos; | |
184
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78 |
461 | 79 } else { |
501 | 80 wsabuf = ngx_array_push(&vec); |
81 if (wsabuf == NULL) { | |
461 | 82 return NGX_CHAIN_ERROR; |
83 } | |
184
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84 |
461 | 85 wsabuf->buf = (char *) cl->buf->pos; |
86 wsabuf->len = cl->buf->last - cl->buf->pos; | |
184
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87 } |
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88 |
461 | 89 prev = cl->buf->last; |
90 send += size; | |
184
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91 } |
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92 |
461 | 93 sent = 0; |
94 | |
95 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, NULL, NULL); | |
96 | |
97 if (rc == -1) { | |
98 err = ngx_errno; | |
99 | |
100 if (err == WSAEWOULDBLOCK) { | |
101 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
102 "WSASend() not ready"); | |
103 | |
104 } else { | |
105 wev->error = 1; | |
106 ngx_connection_error(c, err, "WSASend() failed"); | |
107 return NGX_CHAIN_ERROR; | |
108 } | |
109 } | |
110 | |
111 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
112 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
113 | |
114 c->sent += sent; | |
115 | |
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116 in = ngx_chain_update_sent(in, sent); |
461 | 117 |
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118 if (send - prev_send != sent) { |
461 | 119 wev->ready = 0; |
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120 return in; |
461 | 121 } |
122 | |
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123 if (send >= limit || in == NULL) { |
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124 return in; |
461 | 125 } |
184
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126 } |
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127 } |
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128 |
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129 |
501 | 130 ngx_chain_t * |
131 ngx_overlapped_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
184
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132 { |
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133 int rc; |
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134 u_char *prev; |
473 | 135 u_long size, send, sent; |
184
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136 ngx_err_t err; |
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137 ngx_event_t *wev; |
461 | 138 ngx_array_t vec; |
184
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139 ngx_chain_t *cl; |
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140 LPWSAOVERLAPPED ovlp; |
501 | 141 LPWSABUF wsabuf; |
461 | 142 WSABUF wsabufs[NGX_WSABUFS]; |
184
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143 |
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144 wev = c->write; |
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145 |
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146 if (!wev->ready) { |
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147 return in; |
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148 } |
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149 |
461 | 150 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
151 "wev->complete: %d", wev->complete); | |
152 | |
184
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153 if (!wev->complete) { |
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154 |
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155 /* post the overlapped WSASend() */ |
473 | 156 |
157 /* the maximum limit size is the maximum u_long value - the page size */ | |
158 | |
5875 | 159 if (limit == 0 || limit > (off_t) (NGX_MAX_UINT32_VALUE - ngx_pagesize)) |
160 { | |
473 | 161 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; |
162 } | |
577 | 163 |
184
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164 /* |
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165 * WSABUFs must be 4-byte aligned otherwise |
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166 * WSASend() will return undocumented WSAEINVAL error. |
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167 */ |
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168 |
461 | 169 vec.elts = wsabufs; |
170 vec.nelts = 0; | |
171 vec.size = sizeof(WSABUF); | |
577 | 172 vec.nalloc = NGX_WSABUFS; |
461 | 173 vec.pool = c->pool; |
184
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174 |
461 | 175 send = 0; |
184
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176 prev = NULL; |
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177 wsabuf = NULL; |
577 | 178 |
184
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179 /* create the WSABUF and coalesce the neighbouring bufs */ |
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180 |
461 | 181 for (cl = in; |
182 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
183 cl = cl->next) | |
184 { | |
185 if (ngx_buf_special(cl->buf)) { | |
186 continue; | |
187 } | |
188 | |
189 size = cl->buf->last - cl->buf->pos; | |
190 | |
191 if (send + size > limit) { | |
192 size = (u_long) (limit - send); | |
193 } | |
184
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194 |
343
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195 if (prev == cl->buf->pos) { |
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196 wsabuf->len += cl->buf->last - cl->buf->pos; |
461 | 197 |
184
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198 } else { |
501 | 199 wsabuf = ngx_array_push(&vec); |
200 if (wsabuf == NULL) { | |
461 | 201 return NGX_CHAIN_ERROR; |
202 } | |
203 | |
343
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204 wsabuf->buf = (char *) cl->buf->pos; |
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205 wsabuf->len = cl->buf->last - cl->buf->pos; |
184
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206 } |
461 | 207 |
208 prev = cl->buf->last; | |
209 send += size; | |
184
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210 } |
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211 |
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212 ovlp = (LPWSAOVERLAPPED) &c->write->ovlp; |
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213 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); |
577 | 214 |
461 | 215 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, ovlp, NULL); |
184
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216 |
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217 wev->complete = 0; |
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218 |
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219 if (rc == -1) { |
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220 err = ngx_errno; |
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221 |
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222 if (err == WSA_IO_PENDING) { |
461 | 223 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
224 "WSASend() posted"); | |
184
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225 wev->active = 1; |
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226 return in; |
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227 |
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228 } else { |
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229 wev->error = 1; |
278
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230 ngx_connection_error(c, err, "WSASend() failed"); |
184
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231 return NGX_CHAIN_ERROR; |
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232 } |
577 | 233 |
184
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234 } else if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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235 |
6474 | 236 /* |
237 * if a socket was bound with I/O completion port then | |
238 * GetQueuedCompletionStatus() would anyway return its status | |
239 * despite that WSASend() was already complete | |
240 */ | |
184
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241 |
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242 wev->active = 1; |
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243 return in; |
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244 } |
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245 |
461 | 246 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
247 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
248 | |
184
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249 } else { |
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250 |
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251 /* the overlapped WSASend() complete */ |
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252 |
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253 wev->complete = 0; |
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254 wev->active = 0; |
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255 |
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256 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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257 if (wev->ovlp.error) { |
278
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258 ngx_connection_error(c, wev->ovlp.error, "WSASend() failed"); |
184
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259 return NGX_CHAIN_ERROR; |
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260 } |
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261 |
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262 sent = wev->available; |
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263 |
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264 } else { |
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265 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp, |
2776 | 266 &sent, 0, NULL) |
267 == 0) | |
268 { | |
278
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269 ngx_connection_error(c, ngx_socket_errno, |
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270 "WSASend() or WSAGetOverlappedResult() failed"); |
577 | 271 |
184
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272 return NGX_CHAIN_ERROR; |
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273 } |
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274 } |
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275 } |
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276 |
461 | 277 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
278 "WSASend ovlp: fd:%d, s:%ul", c->fd, sent); | |
184
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279 |
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280 c->sent += sent; |
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281 |
5912
de68ed551bfb
Renamed ngx_handle_sent_chain() to ngx_chain_update_sent().
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282 in = ngx_chain_update_sent(in, sent); |
184
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283 |
5853
a6e83ac70af9
Reduced difference between the send chain functions.
Valentin Bartenev <vbart@nginx.com>
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5851
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284 if (in) { |
184
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285 wev->ready = 0; |
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286 |
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287 } else { |
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288 wev->ready = 1; |
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289 } |
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290 |
5853
a6e83ac70af9
Reduced difference between the send chain functions.
Valentin Bartenev <vbart@nginx.com>
parents:
5851
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291 return in; |
184
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292 } |