Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_wsasend_chain.c @ 5860:c9787372f16d
Limit conn: use complex value in limit_conn_zone (ticket #121).
One intentional side effect of this change is that key is allowed only
in the first position. Previously, it was possible to specify the key
variable at any position, but that was never documented, and is contrary
to nginx configuration practice for positional parameters.
| author | Valentin Bartenev <vbart@nginx.com> |
|---|---|
| date | Wed, 24 Sep 2014 21:55:19 +0400 |
| parents | a6e83ac70af9 |
| children | 35b8e5e98508 |
| rev | line source |
|---|---|
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
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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_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) | |
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103
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18 { |
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19 int rc; |
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20 u_char *prev; |
| 473 | 21 u_long size, sent, send, prev_send; |
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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]; | |
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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 | |
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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; |
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52 |
| 461 | 53 for ( ;; ) { |
| 54 prev = NULL; | |
| 55 wsabuf = NULL; | |
| 473 | 56 prev_send = send; |
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57 |
| 461 | 58 vec.nelts = 0; |
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59 |
| 461 | 60 /* create the WSABUF and coalesce the neighbouring bufs */ |
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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 } | |
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69 |
| 461 | 70 size = cl->buf->last - cl->buf->pos; |
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71 |
| 461 | 72 if (send + size > limit) { |
| 73 size = (u_long) (limit - send); | |
| 74 } | |
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75 |
| 461 | 76 if (prev == cl->buf->pos) { |
| 77 wsabuf->len += cl->buf->last - cl->buf->pos; | |
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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 } | |
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84 |
| 461 | 85 wsabuf->buf = (char *) cl->buf->pos; |
| 86 wsabuf->len = cl->buf->last - cl->buf->pos; | |
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87 } |
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88 |
| 461 | 89 prev = cl->buf->last; |
| 90 send += size; | |
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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_handle_sent_chain(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 } |
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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) | |
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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; |
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136 ngx_err_t err; |
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137 ngx_event_t *wev; |
| 461 | 138 ngx_array_t vec; |
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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]; |
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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 | |
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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 | |
| 159 if (limit == 0 || limit > NGX_MAX_UINT32_VALUE - ngx_pagesize) { | |
| 160 limit = NGX_MAX_UINT32_VALUE - ngx_pagesize; | |
| 161 } | |
| 577 | 162 |
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163 /* |
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164 * WSABUFs must be 4-byte aligned otherwise |
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165 * WSASend() will return undocumented WSAEINVAL error. |
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166 */ |
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167 |
| 461 | 168 vec.elts = wsabufs; |
| 169 vec.nelts = 0; | |
| 170 vec.size = sizeof(WSABUF); | |
| 577 | 171 vec.nalloc = NGX_WSABUFS; |
| 461 | 172 vec.pool = c->pool; |
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173 |
| 461 | 174 send = 0; |
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175 prev = NULL; |
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176 wsabuf = NULL; |
| 577 | 177 |
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178 /* create the WSABUF and coalesce the neighbouring bufs */ |
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179 |
| 461 | 180 for (cl = in; |
| 181 cl && vec.nelts < ngx_max_wsabufs && send < limit; | |
| 182 cl = cl->next) | |
| 183 { | |
| 184 if (ngx_buf_special(cl->buf)) { | |
| 185 continue; | |
| 186 } | |
| 187 | |
| 188 size = cl->buf->last - cl->buf->pos; | |
| 189 | |
| 190 if (send + size > limit) { | |
| 191 size = (u_long) (limit - send); | |
| 192 } | |
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193 |
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194 if (prev == cl->buf->pos) { |
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195 wsabuf->len += cl->buf->last - cl->buf->pos; |
| 461 | 196 |
|
184
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197 } else { |
| 501 | 198 wsabuf = ngx_array_push(&vec); |
| 199 if (wsabuf == NULL) { | |
| 461 | 200 return NGX_CHAIN_ERROR; |
| 201 } | |
| 202 | |
|
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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203 wsabuf->buf = (char *) cl->buf->pos; |
|
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204 wsabuf->len = cl->buf->last - cl->buf->pos; |
|
184
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205 } |
| 461 | 206 |
| 207 prev = cl->buf->last; | |
| 208 send += size; | |
|
184
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209 } |
|
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210 |
|
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211 ovlp = (LPWSAOVERLAPPED) &c->write->ovlp; |
|
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212 ngx_memzero(ovlp, sizeof(WSAOVERLAPPED)); |
| 577 | 213 |
| 461 | 214 rc = WSASend(c->fd, vec.elts, vec.nelts, &sent, 0, ovlp, NULL); |
|
184
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215 |
|
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216 wev->complete = 0; |
|
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217 |
|
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218 if (rc == -1) { |
|
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219 err = ngx_errno; |
|
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220 |
|
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221 if (err == WSA_IO_PENDING) { |
| 461 | 222 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
| 223 "WSASend() posted"); | |
|
184
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224 wev->active = 1; |
|
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225 return in; |
|
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parents:
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changeset
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226 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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227 } else { |
|
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228 wev->error = 1; |
|
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
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parents:
257
diff
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229 ngx_connection_error(c, err, "WSASend() failed"); |
|
184
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230 return NGX_CHAIN_ERROR; |
|
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parents:
144
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231 } |
| 577 | 232 |
|
184
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233 } else if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
|
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parents:
144
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changeset
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234 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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235 /* |
|
1bf718ce0dde
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236 * if a socket was bound with I/O completion port then |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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237 * GetQueuedCompletionStatus() would anyway return its status |
|
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238 * despite that WSASend() was already complete |
|
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239 */ |
|
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parents:
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240 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
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241 wev->active = 1; |
|
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nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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242 return in; |
|
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nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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243 } |
|
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parents:
144
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|
244 |
| 461 | 245 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 246 "WSASend: fd:%d, s:%ul", c->fd, sent); | |
| 247 | |
|
184
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nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
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248 } else { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
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changeset
|
249 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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250 /* the overlapped WSASend() complete */ |
|
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parents:
144
diff
changeset
|
251 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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|
252 wev->complete = 0; |
|
1bf718ce0dde
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parents:
144
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253 wev->active = 0; |
|
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parents:
144
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changeset
|
254 |
|
1bf718ce0dde
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parents:
144
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changeset
|
255 if (ngx_event_flags & NGX_USE_IOCP_EVENT) { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
256 if (wev->ovlp.error) { |
|
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
257
diff
changeset
|
257 ngx_connection_error(c, wev->ovlp.error, "WSASend() failed"); |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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258 return NGX_CHAIN_ERROR; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
259 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
260 |
|
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nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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|
261 sent = wev->available; |
|
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parents:
144
diff
changeset
|
262 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
263 } else { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
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|
264 if (WSAGetOverlappedResult(c->fd, (LPWSAOVERLAPPED) &wev->ovlp, |
| 2776 | 265 &sent, 0, NULL) |
| 266 == 0) | |
| 267 { | |
|
278
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
257
diff
changeset
|
268 ngx_connection_error(c, ngx_socket_errno, |
|
0ba4821f4460
nginx-0.0.2-2004-03-04-10:04:55 import
Igor Sysoev <igor@sysoev.ru>
parents:
257
diff
changeset
|
269 "WSASend() or WSAGetOverlappedResult() failed"); |
| 577 | 270 |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
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|
271 return NGX_CHAIN_ERROR; |
|
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nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
272 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
273 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
274 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
275 |
| 461 | 276 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 277 "WSASend ovlp: fd:%d, s:%ul", c->fd, sent); | |
|
184
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nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
278 |
|
1bf718ce0dde
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parents:
144
diff
changeset
|
279 c->sent += sent; |
|
1bf718ce0dde
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parents:
144
diff
changeset
|
280 |
|
5853
a6e83ac70af9
Reduced difference between the send chain functions.
Valentin Bartenev <vbart@nginx.com>
parents:
5851
diff
changeset
|
281 in = ngx_handle_sent_chain(in, sent); |
|
184
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parents:
144
diff
changeset
|
282 |
|
5853
a6e83ac70af9
Reduced difference between the send chain functions.
Valentin Bartenev <vbart@nginx.com>
parents:
5851
diff
changeset
|
283 if (in) { |
|
184
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nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
284 wev->ready = 0; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
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parents:
144
diff
changeset
|
285 |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
286 } else { |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
287 wev->ready = 1; |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
288 } |
|
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
289 |
|
5853
a6e83ac70af9
Reduced difference between the send chain functions.
Valentin Bartenev <vbart@nginx.com>
parents:
5851
diff
changeset
|
290 return in; |
|
184
1bf718ce0dde
nginx-0.0.1-2003-11-14-10:20:34 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
291 } |