nginx/src/event/ngx_event_acceptex.c

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/*
* Copyright (C) Igor Sysoev
*/
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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>
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void ngx_event_acceptex(ngx_event_t *rev)
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{
ngx_connection_t *c;
c = rev->data;
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "AcceptEx: %d", c->fd);
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if (rev->ovlp.error) {
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ngx_log_error(NGX_LOG_CRIT, c->log, rev->ovlp.error,
"AcceptEx() %V failed", &c->listening->addr_text);
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return;
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}
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/* SO_UPDATE_ACCEPT_CONTEXT is required for shutdown() to work */
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if (setsockopt(c->fd, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
(char *) &c->listening->fd, sizeof(ngx_socket_t)) == -1)
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{
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ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
"setsockopt(SO_UPDATE_ACCEPT_CONTEXT) failed for %V",
&c->addr_text);
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} else {
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c->accept_context_updated = 1;
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}
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getacceptexsockaddrs(c->buffer->pos, c->listening->post_accept_buffer_size,
c->listening->socklen + 16,
c->listening->socklen + 16,
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&c->local_sockaddr, &c->local_socklen,
&c->sockaddr, &c->socklen);
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if (c->listening->post_accept_buffer_size) {
c->buffer->last += rev->available;
c->buffer->end = c->buffer->start
+ c->listening->post_accept_buffer_size;
} else {
c->buffer = NULL;
}
if (c->listening->addr_ntop) {
c->addr_text.data = ngx_palloc(c->pool,
c->listening->addr_text_max_len);
if (c->addr_text.data == NULL) {
/* TODO: close socket */
return;
}
c->addr_text.len = ngx_sock_ntop(c->listening->family, c->sockaddr,
c->addr_text.data,
c->listening->addr_text_max_len);
if (c->addr_text.len == 0) {
/* TODO: close socket */
return;
}
}
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ngx_event_post_acceptex(c->listening, 1);
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c->number = ngx_atomic_inc(ngx_connection_counter);
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c->listening->handler(c);
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return;
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}
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int ngx_event_post_acceptex(ngx_listening_t *ls, int n)
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{
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u_long rcvd;
ngx_int_t i;
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ngx_err_t err;
ngx_event_t *rev, *wev;
ngx_socket_t s;
ngx_connection_t *c;
for (i = 0; i < n; i++) {
/* TODO: look up reused sockets */
s = ngx_socket(ls->family, ls->type, 0);
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, ls->log, 0,
ngx_socket_n " s:%d", s);
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if (s == -1) {
ngx_log_error(NGX_LOG_ALERT, ls->log, ngx_socket_errno,
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ngx_socket_n " for AcceptEx() %s post failed",
ls->addr_text.data);
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return NGX_ERROR;
}
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/*
* Winsock assignes a socket number divisible by 4
* so to find a connection we divide a socket number by 4.
*/
if (s % 4) {
ngx_log_error(NGX_LOG_EMERG, ls->log, 0,
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ngx_socket_n
" created socket %d, not divisible by 4", s);
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exit(1);
}
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c = &ngx_cycle->connections[s / 4];
rev = &ngx_cycle->read_events[s / 4];
wev = &ngx_cycle->write_events[s / 4];
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ngx_memzero(c, sizeof(ngx_connection_t));
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ngx_memzero(rev, sizeof(ngx_event_t));
ngx_memzero(wev, sizeof(ngx_event_t));
c->listening = ls;
rev->index = NGX_INVALID_INDEX;
wev->index = NGX_INVALID_INDEX;
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rev->ovlp.event = rev;
wev->ovlp.event = wev;
nginx-0.1.29-RELEASE import *) Feature: the ngx_http_ssi_module supports "include virtual" command. *) Feature: the ngx_http_ssi_module supports the condition command like 'if expr="$NAME"' and "else" and "endif" commands. Only one nested level is supported. *) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and DATE_GMT variables and "config timefmt" command. *) Feature: the "ssi_ignore_recycled_buffers" directive. *) Bugfix: the "echo" command did not show the default value for the empty QUERY_STRING variable. *) Change: the ngx_http_proxy_module was rewritten. *) Feature: the "proxy_redirect", "proxy_pass_request_headers", "proxy_pass_request_body", and "proxy_method" directives. *) Feature: the "proxy_set_header" directive. The "proxy_x_var" was canceled and must be replaced with the proxy_set_header directive. *) Change: the "proxy_preserve_host" is canceled and must be replaced with the "proxy_set_header Host $host" and the "proxy_redirect off" directives, the "proxy_set_header Host $host:$proxy_port" directive and the appropriate proxy_redirect directives. *) Change: the "proxy_set_x_real_ip" is canceled and must be replaced with the "proxy_set_header X-Real-IP $remote_addr" directive. *) Change: the "proxy_add_x_forwarded_for" is canceled and must be replaced with the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for" directive. *) Change: the "proxy_set_x_url" is canceled and must be replaced with the "proxy_set_header X-URL http://$host:$server_port$request_uri" directive. *) Feature: the "fastcgi_param" directive. *) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params" directive are canceled and must be replaced with the fastcgi_param directives. *) Feature: the "index" directive can use the variables. *) Feature: the "index" directive can be used at http and server levels. *) Change: the last index only in the "index" directive can be absolute. *) Feature: the "rewrite" directive can use the variables. *) Feature: the "internal" directive. *) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR, SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME, REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables. *) Change: nginx now passes the invalid lines in a client request headers or a backend response header. *) Bugfix: if the backend did not transfer response for a long time and the "send_timeout" was less than "proxy_read_timeout", then nginx returned the 408 response. *) Bugfix: the segmentation fault was occurred if the backend sent an invalid line in response header; the bug had appeared in 0.1.26. *) Bugfix: the segmentation fault may occurred in FastCGI fault tolerance configuration. *) Bugfix: the "expires" directive did not remove the previous "Expires" and "Cache-Control" headers. *) Bugfix: nginx did not take into account trailing dot in "Host" header line. *) Bugfix: the ngx_http_auth_module did not work under Linux. *) Bugfix: the rewrite directive worked incorrectly, if the arguments were in a request. *) Bugfix: nginx could not be built on MacOS X.
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rev->handler = ngx_event_acceptex;
rev->data = c;
wev->data = c;
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c->read = rev;
c->write = wev;
c->fd = s;
c->unexpected_eof = 1;
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rev->ready = 1;
wev->write = 1;
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wev->ready = 1;
c->ctx = ls->ctx;
c->servers = ls->servers;
c->recv = ngx_recv;
c->send_chain = ngx_send_chain;
c->pool = ngx_create_pool(ls->pool_size, ls->log);
if (c->pool == NULL) {
return NGX_ERROR;
}
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c->buffer = ngx_create_temp_buf(c->pool,
ls->post_accept_buffer_size
+ 2 * (c->listening->socklen + 16));
if (c->buffer == NULL) {
return NGX_ERROR;
}
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c->local_sockaddr = ngx_palloc(c->pool, ls->socklen);
if (c->local_sockaddr == NULL) {
return NGX_ERROR;
}
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c->sockaddr = ngx_palloc(c->pool, ls->socklen);
if (c->sockaddr == NULL) {
return NGX_ERROR;
}
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c->log = ngx_palloc(c->pool, sizeof(ngx_log_t));
if (c->log == NULL) {
return NGX_ERROR;
}
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ngx_memcpy(c->log, ls->log, sizeof(ngx_log_t));
c->read->log = c->log;
c->write->log = c->log;
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if (ngx_add_event(rev, 0, NGX_IOCP_IO) == NGX_ERROR) {
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return NGX_ERROR;
}
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if (acceptex(ls->fd, s, c->buffer->pos, ls->post_accept_buffer_size,
ls->socklen + 16, ls->socklen + 16,
&rcvd, (LPOVERLAPPED) &rev->ovlp) == 0)
{
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err = ngx_socket_errno;
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if (err != WSA_IO_PENDING) {
ngx_log_error(NGX_LOG_ALERT, ls->log, err,
"AcceptEx() %s falied", ls->addr_text.data);
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return NGX_ERROR;
}
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}
}
return NGX_OK;
}