Mercurial > hg > nginx
annotate src/os/win32/ngx_wsasend_chain.c @ 2614:02fb50962b11
fix ngx_wsasend_chain()
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sun, 29 Mar 2009 16:58:23 +0000 |
parents | 4d9ea73a627a |
children | 88987e52be42 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
441
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4 */ |
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103
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6 |
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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_event.h> |
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10 |
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11 |
461 | 12 #define NGX_WSABUFS 8 |
13 | |
14 | |
501 | 15 ngx_chain_t * |
16 ngx_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
103
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17 { |
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18 int rc; |
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19 u_char *prev; |
473 | 20 u_long size, sent, send, prev_send; |
461 | 21 ngx_uint_t complete; |
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 | |
37 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) { | |
38 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; | |
39 } | |
40 | |
461 | 41 send = 0; |
42 complete = 0; | |
43 | |
184
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44 /* |
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45 * WSABUFs must be 4-byte aligned otherwise |
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46 * WSASend() will return undocumented WSAEINVAL error. |
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47 */ |
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48 |
461 | 49 vec.elts = wsabufs; |
50 vec.size = sizeof(WSABUF); | |
577 | 51 vec.nalloc = NGX_WSABUFS; |
461 | 52 vec.pool = c->pool; |
184
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53 |
461 | 54 for ( ;; ) { |
55 prev = NULL; | |
56 wsabuf = NULL; | |
473 | 57 prev_send = send; |
184
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58 |
461 | 59 vec.nelts = 0; |
184
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60 |
461 | 61 /* create the WSABUF and coalesce the neighbouring bufs */ |
184
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62 |
461 | 63 for (cl = in; |
64 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
65 cl = cl->next) | |
66 { | |
67 if (ngx_buf_special(cl->buf)) { | |
68 continue; | |
69 } | |
184
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70 |
461 | 71 size = cl->buf->last - cl->buf->pos; |
184
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72 |
461 | 73 if (send + size > limit) { |
74 size = (u_long) (limit - send); | |
75 } | |
184
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76 |
461 | 77 if (prev == cl->buf->pos) { |
78 wsabuf->len += cl->buf->last - cl->buf->pos; | |
184
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79 |
461 | 80 } else { |
501 | 81 wsabuf = ngx_array_push(&vec); |
82 if (wsabuf == NULL) { | |
461 | 83 return NGX_CHAIN_ERROR; |
84 } | |
184
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85 |
461 | 86 wsabuf->buf = (char *) cl->buf->pos; |
87 wsabuf->len = cl->buf->last - cl->buf->pos; | |
184
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88 } |
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89 |
461 | 90 prev = cl->buf->last; |
91 send += size; | |
184
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92 } |
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93 |
461 | 94 sent = 0; |
95 | |
96 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, NULL, NULL); | |
97 | |
98 if (rc == -1) { | |
99 err = ngx_errno; | |
100 | |
101 if (err == WSAEWOULDBLOCK) { | |
102 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
103 "WSASend() not ready"); | |
104 | |
105 } else { | |
106 wev->error = 1; | |
107 ngx_connection_error(c, err, "WSASend() failed"); | |
108 return NGX_CHAIN_ERROR; | |
109 } | |
110 } | |
111 | |
112 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
113 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
114 | |
473 | 115 if (send - prev_send == sent) { |
461 | 116 complete = 1; |
184
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117 } |
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118 |
461 | 119 c->sent += sent; |
120 | |
2614 | 121 for (cl = in; cl; cl = cl->next) { |
122 | |
461 | 123 if (ngx_buf_special(cl->buf)) { |
124 continue; | |
125 } | |
126 | |
127 if (sent == 0) { | |
128 break; | |
129 } | |
130 | |
131 size = cl->buf->last - cl->buf->pos; | |
132 | |
133 if (sent >= size) { | |
134 sent -= size; | |
135 cl->buf->pos = cl->buf->last; | |
184
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136 |
461 | 137 continue; |
138 } | |
139 | |
140 cl->buf->pos += sent; | |
141 | |
142 break; | |
143 } | |
144 | |
145 if (!complete) { | |
146 wev->ready = 0; | |
147 return cl; | |
148 } | |
149 | |
150 if (send >= limit || cl == NULL) { | |
151 return cl; | |
152 } | |
153 | |
154 in = cl; | |
184
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155 } |
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156 } |
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157 |
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158 |
501 | 159 ngx_chain_t * |
160 ngx_overlapped_wsasend_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
184
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161 { |
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162 int rc; |
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163 u_char *prev; |
473 | 164 u_long size, send, sent; |
184
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165 ngx_err_t err; |
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166 ngx_event_t *wev; |
461 | 167 ngx_array_t vec; |
184
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168 ngx_chain_t *cl; |
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169 LPWSAOVERLAPPED ovlp; |
501 | 170 LPWSABUF wsabuf; |
461 | 171 WSABUF wsabufs[NGX_WSABUFS]; |
184
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172 |
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173 wev = c->write; |
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174 |
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175 if (!wev->ready) { |
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176 return in; |
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177 } |
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178 |
461 | 179 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
180 "wev->complete: %d", wev->complete); | |
181 | |
184
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182 if (!wev->complete) { |
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183 |
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184 /* post the overlapped WSASend() */ |
473 | 185 |
186 /* the maximum limit size is the maximum u_long value - the page size */ | |
187 | |
188 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) { | |
189 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; | |
190 } | |
577 | 191 |
184
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192 /* |
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193 * WSABUFs must be 4-byte aligned otherwise |
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194 * WSASend() will return undocumented WSAEINVAL error. |
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195 */ |
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196 |
461 | 197 vec.elts = wsabufs; |
198 vec.nelts = 0; | |
199 vec.size = sizeof(WSABUF); | |
577 | 200 vec.nalloc = NGX_WSABUFS; |
461 | 201 vec.pool = c->pool; |
184
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202 |
461 | 203 send = 0; |
184
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204 prev = NULL; |
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205 wsabuf = NULL; |
577 | 206 |
184
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207 /* create the WSABUF and coalesce the neighbouring bufs */ |
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208 |
461 | 209 for (cl = in; |
210 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
211 cl = cl->next) | |
212 { | |
213 if (ngx_buf_special(cl->buf)) { | |
214 continue; | |
215 } | |
216 | |
217 size = cl->buf->last - cl->buf->pos; | |
218 | |
219 if (send + size > limit) { | |
220 size = (u_long) (limit - send); | |
221 } | |
184
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222 |
343
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223 if (prev == cl->buf->pos) { |
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224 wsabuf->len += cl->buf->last - cl->buf->pos; |
461 | 225 |
184
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226 } else { |
501 | 227 wsabuf = ngx_array_push(&vec); |
228 if (wsabuf == NULL) { | |
461 | 229 return NGX_CHAIN_ERROR; |
230 } | |
231 | |
343
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232 wsabuf->buf = (char *) cl->buf->pos; |
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233 wsabuf->len = cl->buf->last - cl->buf->pos; |
184
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234 } |
461 | 235 |
236 prev = cl->buf->last; | |
237 send += size; | |
184
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238 } |
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239 |
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240 ovlp = (LPWSAOVERLAPPED) &c->write->ovlp; |
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241 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); |
577 | 242 |
461 | 243 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, ovlp, NULL); |
184
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244 |
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245 wev->complete = 0; |
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246 |
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247 if (rc == -1) { |
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248 err = ngx_errno; |
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249 |
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250 if (err == WSA_IO_PENDING) { |
461 | 251 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
252 "WSASend() posted"); | |
184
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253 wev->active = 1; |
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254 return in; |
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255 |
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256 } else { |
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257 wev->error = 1; |
278
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258 ngx_connection_error(c, err, "WSASend() failed"); |
184
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259 return NGX_CHAIN_ERROR; |
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260 } |
577 | 261 |
184
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262 } else if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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263 |
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264 /* |
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265 * if a socket was bound with I/O completion port then |
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266 * GetQueuedCompletionStatus() would anyway return its status |
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267 * despite that WSASend() was already complete |
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268 */ |
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269 |
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270 wev->active = 1; |
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271 return in; |
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272 } |
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273 |
461 | 274 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
275 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
276 | |
184
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277 } else { |
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278 |
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279 /* the overlapped WSASend() complete */ |
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280 |
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281 wev->complete = 0; |
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282 wev->active = 0; |
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283 |
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284 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
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parents:
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285 if (wev->ovlp.error) { |
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
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parents:
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286 ngx_connection_error(c, wev->ovlp.error, "WSASend() failed"); |
184
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287 return NGX_CHAIN_ERROR; |
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288 } |
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289 |
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290 sent = wev->available; |
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291 |
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292 } else { |
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293 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp, |
1bf718ce0dde
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parents:
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294 &sent, 0, NULL) == 0) { |
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
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parents:
257
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295 ngx_connection_error(c, ngx_socket_errno, |
0ba4821f4460
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parents:
257
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296 "WSASend() or WSAGetOverlappedResult() failed"); |
577 | 297 |
184
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298 return NGX_CHAIN_ERROR; |
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299 } |
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parents:
144
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300 } |
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144
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|
301 } |
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302 |
461 | 303 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
304 "WSASend ovlp: fd:%d, s:%ul", c->fd, sent); | |
184
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305 |
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306 c->sent += sent; |
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307 |
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308 for (cl = in; cl && sent > 0; cl = cl->next) { |
461 | 309 if (ngx_buf_special(cl->buf)) { |
310 continue; | |
311 } | |
312 | |
313 if (sent == 0) { | |
314 break; | |
315 } | |
184
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parents:
144
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|
316 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents:
292
diff
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|
317 size = cl->buf->last - cl->buf->pos; |
184
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parents:
144
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|
318 |
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319 if (sent >= size) { |
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320 sent -= size; |
461 | 321 cl->buf->pos = cl->buf->last; |
184
1bf718ce0dde
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|
322 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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|
323 continue; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
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|
324 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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144
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|
325 |
461 | 326 cl->buf->pos += sent; |
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
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|
327 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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|
328 break; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
329 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
330 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
331 if (cl) { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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|
332 wev->ready = 0; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
333 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
334 } else { |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
335 wev->ready = 1; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
336 } |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
337 |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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|
338 return cl; |
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
339 } |