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#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_types.h>
#include <ngx_log.h>
#include <ngx_listen.h>
#include <ngx_connection.h>
#include <ngx_event.h>
#include <ngx_event_close.h>
#include <ngx_iocp_module.h>
#include <ngx_event_acceptex.h>
/* This function should always return NGX_OK even there are some failures
because if we return NGX_ERROR then listening socket would be closed */
int ngx_event_acceptex(ngx_event_t *ev)
{
ngx_connection_t *c;
c = (ngx_connection_t *) ev->data;
if (ev->ovlp.error) {
ngx_log_error(NGX_LOG_CRIT, ev->log, ev->ovlp.error,
"AcceptEx(%s) falied", c->addr_text.data);
return NGX_OK;
}
#if 0
/* can we do SO_UPDATE_ACCEPT_CONTEXT just before shutdown() ???
or AcceptEx's context will be lost ??? */
/* SO_UPDATE_ACCEPT_CONTEXT is required for shutdown() to work */
if (setsockopt(context->accept_socket, SOL_SOCKET,
SO_UPDATE_ACCEPT_CONTEXT, (char *)&nsd,
sizeof(nsd))) {
ap_log_error(APLOG_MARK, APLOG_ERR, WSAGetLastError(), server_conf,
"setsockopt(SO_UPDATE_ACCEPT_CONTEXT) failed.");
/* non fatal - we can not only do lingering close */
#endif
getacceptexsockaddrs(c->data, 0,
c->socklen + 16, c->socklen + 16,
&c->local_sockaddr, &c->local_socklen,
&c->sockaddr, &c->socklen);
ngx_event_post_acceptex(c->listening, 1);
/* STUB: InterlockedInc() */
c->number = ngx_connection_counter++;
c->handler(c);
return NGX_OK;
}
int ngx_event_post_acceptex(ngx_listen_t *ls, int n)
{
int i;
u_int rcvd;
ngx_err_t err;
ngx_pool_t *pool;
ngx_event_t *rev, *wev;
ngx_socket_t s;
ngx_connection_t *c;
for (i = 0; i < n; i++) {
/* TODO: look up reused sockets */
ngx_log_debug(ls->log, "socket: %x" _ ls->flags);
s = ngx_socket(ls->family, ls->type, ls->protocol, ls->flags);
if (s == -1) {
ngx_log_error(NGX_LOG_ALERT, ls->log, ngx_socket_errno,
ngx_socket_n " for AcceptEx(%s) falied",
ls->addr_text.data);
return NGX_ERROR;
}
ngx_test_null(pool, ngx_create_pool(ls->pool_size, ls->log), NGX_ERROR);
rev = &ngx_read_events[s];
wev = &ngx_write_events[s];
c = &ngx_connections[s];
ngx_memzero(rev, sizeof(ngx_event_t));
ngx_memzero(wev, sizeof(ngx_event_t));
ngx_memzero(c, sizeof(ngx_connection_t));
c->pool = pool;
rev->index = wev->index = NGX_INVALID_INDEX;
rev->ovlp.event = rev;
wev->ovlp.event = wev;
rev->data = wev->data = c;
c->read = rev;
c->write = wev;
c->family = ls->family;
c->socklen = ls->socklen;
c->addr = ls->addr;
c->addr_text_max_len = ls->addr_text_max_len;
c->post_accept_timeout = ls->post_accept_timeout;
c->listening = ls;
c->fd = s;
c->unexpected_eof = 1;
wev->write = 1;
c->handler = ls->handler;
rev->event_handler = ngx_event_acceptex;
c->ctx = ls->ctx;
c->servers = ls->servers;
ngx_test_null(c->data, ngx_palloc(pool, 2 * (c->socklen + 16)),
NGX_ERROR);
ngx_test_null(c->local_sockaddr, ngx_palloc(pool, c->socklen),
NGX_ERROR);
ngx_test_null(c->sockaddr, ngx_palloc(pool, c->socklen),
NGX_ERROR);
ngx_test_null(c->log, ngx_palloc(c->pool, sizeof(ngx_log_t)),
NGX_ERROR);
ngx_memcpy(c->log, ls->log, sizeof(ngx_log_t));
rev->log = wev->log = c->log;
if (ngx_iocp_add_event(rev) == NGX_ERROR) {
return NGX_ERROR;
}
if (acceptex(ls->fd, s, c->data, 0,
c->socklen + 16, c->socklen + 16,
&rcvd, (LPOVERLAPPED) &rev->ovlp) == 0) {
err = ngx_socket_errno;
if (err == WSA_IO_PENDING) {
return NGX_OK;
}
ngx_log_error(NGX_LOG_ALERT, ls->log, err,
"AcceptEx(%s) falied", ls->addr_text.data);
return NGX_ERROR;
}
}
return NGX_OK;
}
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