Mercurial > hg > nginx-quic
annotate src/event/ngx_event_acceptex.c @ 5405:620808518349
SPDY: ignore priority when queuing blocked frames.
With this change all such frames will be added in front of the output queue, and
will be sent first. It prevents HOL blocking when response with higher priority
is blocked by response with lower priority in the middle of the queue because
the order of their SYN_REPLY frames cannot be changed.
Proposed by Yury Kirpichev.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Tue, 01 Oct 2013 00:14:37 +0400 |
parents | 3d2d3e1cf427 |
children | 1ab1cf63f885 |
rev | line source |
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441
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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. |
441
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5 */ |
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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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12 |
543 | 13 static void ngx_close_posted_connection(ngx_connection_t *c); |
14 | |
15 | |
16 void | |
17 ngx_event_acceptex(ngx_event_t *rev) | |
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18 { |
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19 ngx_listening_t *ls; |
59
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20 ngx_connection_t *c; |
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21 socklen_t len; |
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22 |
461 | 23 c = rev->data; |
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24 ls = c->listening; |
461 | 25 |
543 | 26 c->log->handler = ngx_accept_log_error; |
27 | |
461 | 28 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "AcceptEx: %d", c->fd); |
102
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29 |
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30 if (rev->ovlp.error) { |
103
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31 ngx_log_error(NGX_LOG_CRIT, c->log, rev->ovlp.error, |
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32 "AcceptEx() %V failed", &ls->addr_text); |
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33 return; |
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34 } |
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36 /* SO_UPDATE_ACCEPT_CONTEXT is required for shutdown() to work */ |
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37 |
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38 if (setsockopt(c->fd, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT, |
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39 (char *) &ls->fd, sizeof(ngx_socket_t)) |
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40 == -1) |
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41 { |
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42 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno, |
461 | 43 "setsockopt(SO_UPDATE_ACCEPT_CONTEXT) failed for %V", |
44 &c->addr_text); | |
102
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45 } else { |
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46 c->accept_context_updated = 1; |
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47 } |
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48 |
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49 ngx_getacceptexsockaddrs(c->buffer->pos, |
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50 ls->post_accept_buffer_size, |
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51 ls->socklen + 16, |
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52 ls->socklen + 16, |
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53 &c->local_sockaddr, &len, |
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54 &c->sockaddr, &c->socklen); |
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55 |
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56 if (ls->post_accept_buffer_size) { |
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57 c->buffer->last += rev->available; |
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58 c->buffer->end = c->buffer->start + ls->post_accept_buffer_size; |
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59 |
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60 } else { |
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61 c->buffer = NULL; |
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62 } |
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63 |
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64 if (ls->addr_ntop) { |
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65 c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len); |
461 | 66 if (c->addr_text.data == NULL) { |
67 /* TODO: close socket */ | |
68 return; | |
69 } | |
70 | |
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71 c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->socklen, |
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72 c->addr_text.data, |
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73 ls->addr_text_max_len, 0); |
461 | 74 if (c->addr_text.len == 0) { |
75 /* TODO: close socket */ | |
76 return; | |
77 } | |
78 } | |
79 | |
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80 ngx_event_post_acceptex(ls, 1); |
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81 |
561 | 82 c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1); |
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83 |
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84 ls->handler(c); |
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85 |
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86 return; |
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87 |
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88 } |
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89 |
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90 |
543 | 91 ngx_int_t |
92 ngx_event_post_acceptex(ngx_listening_t *ls, ngx_uint_t n) | |
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93 { |
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94 u_long rcvd; |
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95 ngx_err_t err; |
543 | 96 ngx_log_t *log; |
97 ngx_uint_t i; | |
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98 ngx_event_t *rev, *wev; |
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99 ngx_socket_t s; |
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100 ngx_connection_t *c; |
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101 |
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102 for (i = 0; i < n; i++) { |
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103 |
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104 /* TODO: look up reused sockets */ |
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105 |
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106 s = ngx_socket(ls->sockaddr->sa_family, ls->type, 0); |
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107 |
543 | 108 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &ls->log, 0, |
461 | 109 ngx_socket_n " s:%d", s); |
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110 |
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111 if (s == (ngx_socket_t) -1) { |
543 | 112 ngx_log_error(NGX_LOG_ALERT, &ls->log, ngx_socket_errno, |
113 ngx_socket_n " failed"); | |
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114 |
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115 return NGX_ERROR; |
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116 } |
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117 |
543 | 118 c = ngx_get_connection(s, &ls->log); |
119 | |
120 if (c == NULL) { | |
121 return NGX_ERROR; | |
122 } | |
123 | |
124 c->pool = ngx_create_pool(ls->pool_size, &ls->log); | |
125 if (c->pool == NULL) { | |
126 ngx_close_posted_connection(c); | |
127 return NGX_ERROR; | |
128 } | |
129 | |
130 log = ngx_palloc(c->pool, sizeof(ngx_log_t)); | |
131 if (log == NULL) { | |
132 ngx_close_posted_connection(c); | |
133 return NGX_ERROR; | |
103
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134 } |
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135 |
543 | 136 c->buffer = ngx_create_temp_buf(c->pool, ls->post_accept_buffer_size |
137 + 2 * (ls->socklen + 16)); | |
138 if (c->buffer == NULL) { | |
139 ngx_close_posted_connection(c); | |
140 return NGX_ERROR; | |
141 } | |
142 | |
143 c->local_sockaddr = ngx_palloc(c->pool, ls->socklen); | |
144 if (c->local_sockaddr == NULL) { | |
145 ngx_close_posted_connection(c); | |
146 return NGX_ERROR; | |
147 } | |
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148 |
543 | 149 c->sockaddr = ngx_palloc(c->pool, ls->socklen); |
150 if (c->sockaddr == NULL) { | |
151 ngx_close_posted_connection(c); | |
152 return NGX_ERROR; | |
153 } | |
154 | |
155 *log = ls->log; | |
156 c->log = log; | |
157 | |
158 c->recv = ngx_recv; | |
159 c->send = ngx_send; | |
577 | 160 c->recv_chain = ngx_recv_chain; |
543 | 161 c->send_chain = ngx_send_chain; |
162 | |
163 c->unexpected_eof = 1; | |
164 | |
165 c->listening = ls; | |
166 | |
561 | 167 rev = c->read; |
168 wev = c->write; | |
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169 |
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170 rev->ovlp.event = rev; |
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171 wev->ovlp.event = wev; |
509 | 172 rev->handler = ngx_event_acceptex; |
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173 |
461 | 174 rev->ready = 1; |
175 wev->ready = 1; | |
59
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176 |
543 | 177 rev->log = c->log; |
178 wev->log = c->log; | |
59
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179 |
102
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nginx-0.0.1-2003-06-06-18:59:20 import
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100
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180 if (ngx_add_event(rev, 0, NGX_IOCP_IO) == NGX_ERROR) { |
543 | 181 ngx_close_posted_connection(c); |
59
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182 return NGX_ERROR; |
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183 } |
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184 |
1633
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TransmitPackets(), ConnectEx(), and DisconnectEx()
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185 if (ngx_acceptex(ls->fd, s, c->buffer->pos, ls->post_accept_buffer_size, |
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186 ls->socklen + 16, ls->socklen + 16, |
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187 &rcvd, (LPOVERLAPPED) &rev->ovlp) |
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188 == 0) |
103
6dfda4cf5200
nginx-0.0.1-2003-06-11-19:28:34 import
Igor Sysoev <igor@sysoev.ru>
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189 { |
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190 err = ngx_socket_errno; |
103
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191 if (err != WSA_IO_PENDING) { |
543 | 192 ngx_log_error(NGX_LOG_ALERT, &ls->log, err, |
563 | 193 "AcceptEx() %V falied", &ls->addr_text); |
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194 |
543 | 195 ngx_close_posted_connection(c); |
103
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196 return NGX_ERROR; |
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197 } |
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198 } |
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199 } |
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200 |
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201 return NGX_OK; |
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202 } |
543 | 203 |
204 | |
205 static void | |
206 ngx_close_posted_connection(ngx_connection_t *c) | |
207 { | |
208 ngx_socket_t fd; | |
209 | |
210 ngx_free_connection(c); | |
211 | |
212 fd = c->fd; | |
213 c->fd = (ngx_socket_t) -1; | |
214 | |
215 if (ngx_close_socket(fd) == -1) { | |
216 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno, | |
217 ngx_close_socket_n " failed"); | |
218 } | |
219 | |
220 if (c->pool) { | |
221 ngx_destroy_pool(c->pool); | |
222 } | |
223 } | |
224 | |
225 | |
226 u_char * | |
227 ngx_acceptex_log_error(ngx_log_t *log, u_char *buf, size_t len) | |
228 { | |
229 return ngx_snprintf(buf, len, " while posting AcceptEx() on %V", log->data); | |
230 } |