view src/event/ngx_event_acceptex.c @ 5145:f6777aef5b2f

Configure: fixed perl module make rules. Filename extension used for dynamically loaded perl modules isn't necessarily ".so" (e.g., it's ".bundle" on Mac OS X). This fixes "make" after "make" unnecessarily rebuilding perl module.
author Ruslan Ermilov <ru@nginx.com>
date Thu, 28 Mar 2013 08:46:42 +0000
parents d620f497c50f
children 05ba5bce31e0
line wrap: on
line source


/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_event.h>


static void ngx_close_posted_connection(ngx_connection_t *c);


void
ngx_event_acceptex(ngx_event_t *rev)
{
    ngx_listening_t   *ls;
    ngx_connection_t  *c;
    socklen_t          len;

    c = rev->data;
    ls = c->listening;

    c->log->handler = ngx_accept_log_error;

    ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "AcceptEx: %d", c->fd);

    if (rev->ovlp.error) {
        ngx_log_error(NGX_LOG_CRIT, c->log, rev->ovlp.error,
                      "AcceptEx() %V failed", &ls->addr_text);
        return;
    }

    /* SO_UPDATE_ACCEPT_CONTEXT is required for shutdown() to work */

    if (setsockopt(c->fd, SOL_SOCKET, SO_UPDATE_ACCEPT_CONTEXT,
                   (char *) &ls->fd, sizeof(ngx_socket_t))
        == -1)
    {
        ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
                      "setsockopt(SO_UPDATE_ACCEPT_CONTEXT) failed for %V",
                      &c->addr_text);
    } else {
        c->accept_context_updated = 1;
    }

    ngx_getacceptexsockaddrs(c->buffer->pos,
                             ls->post_accept_buffer_size,
                             ls->socklen + 16,
                             ls->socklen + 16,
                             &c->local_sockaddr, &len,
                             &c->sockaddr, &c->socklen);

    if (ls->post_accept_buffer_size) {
        c->buffer->last += rev->available;
        c->buffer->end = c->buffer->start + ls->post_accept_buffer_size;

    } else {
        c->buffer = NULL;
    }

    if (ls->addr_ntop) {
        c->addr_text.data = ngx_pnalloc(c->pool, ls->addr_text_max_len);
        if (c->addr_text.data == NULL) {
            /* TODO: close socket */
            return;
        }

        c->addr_text.len = ngx_sock_ntop(c->sockaddr, c->addr_text.data,
                                         ls->addr_text_max_len, 0);
        if (c->addr_text.len == 0) {
            /* TODO: close socket */
            return;
        }
    }

    ngx_event_post_acceptex(ls, 1);

    c->number = ngx_atomic_fetch_add(ngx_connection_counter, 1);

    ls->handler(c);

    return;

}


ngx_int_t
ngx_event_post_acceptex(ngx_listening_t *ls, ngx_uint_t n)
{
    u_long             rcvd;
    ngx_err_t          err;
    ngx_log_t         *log;
    ngx_uint_t         i;
    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->sockaddr->sa_family, ls->type, 0);

        ngx_log_debug1(NGX_LOG_DEBUG_EVENT, &ls->log, 0,
                       ngx_socket_n " s:%d", s);

        if (s == -1) {
            ngx_log_error(NGX_LOG_ALERT, &ls->log, ngx_socket_errno,
                          ngx_socket_n " failed");

            return NGX_ERROR;
        }

        c = ngx_get_connection(s, &ls->log);

        if (c == NULL) {
            return NGX_ERROR;
        }

        c->pool = ngx_create_pool(ls->pool_size, &ls->log);
        if (c->pool == NULL) {
            ngx_close_posted_connection(c);
            return NGX_ERROR;
        }

        log = ngx_palloc(c->pool, sizeof(ngx_log_t));
        if (log == NULL) {
            ngx_close_posted_connection(c);
            return NGX_ERROR;
        }

        c->buffer = ngx_create_temp_buf(c->pool, ls->post_accept_buffer_size
                                                 + 2 * (ls->socklen + 16));
        if (c->buffer == NULL) {
            ngx_close_posted_connection(c);
            return NGX_ERROR;
        }

        c->local_sockaddr = ngx_palloc(c->pool, ls->socklen);
        if (c->local_sockaddr == NULL) {
            ngx_close_posted_connection(c);
            return NGX_ERROR;
        }

        c->sockaddr = ngx_palloc(c->pool, ls->socklen);
        if (c->sockaddr == NULL) {
            ngx_close_posted_connection(c);
            return NGX_ERROR;
        }

        *log = ls->log;
        c->log = log;

        c->recv = ngx_recv;
        c->send = ngx_send;
        c->recv_chain = ngx_recv_chain;
        c->send_chain = ngx_send_chain;

        c->unexpected_eof = 1;

        c->listening = ls;

        rev = c->read;
        wev = c->write;

        rev->ovlp.event = rev;
        wev->ovlp.event = wev;
        rev->handler = ngx_event_acceptex;

        rev->ready = 1;
        wev->ready = 1;

        rev->log = c->log;
        wev->log = c->log;

        if (ngx_add_event(rev, 0, NGX_IOCP_IO) == NGX_ERROR) {
            ngx_close_posted_connection(c);
            return NGX_ERROR;
        }

        if (ngx_acceptex(ls->fd, s, c->buffer->pos, ls->post_accept_buffer_size,
                         ls->socklen + 16, ls->socklen + 16,
                         &rcvd, (LPOVERLAPPED) &rev->ovlp)
            == 0)
        {
            err = ngx_socket_errno;
            if (err != WSA_IO_PENDING) {
                ngx_log_error(NGX_LOG_ALERT, &ls->log, err,
                              "AcceptEx() %V falied", &ls->addr_text);

                ngx_close_posted_connection(c);
                return NGX_ERROR;
            }
        }
    }

    return NGX_OK;
}


static void
ngx_close_posted_connection(ngx_connection_t *c)
{
    ngx_socket_t  fd;

    ngx_free_connection(c);

    fd = c->fd;
    c->fd = (ngx_socket_t) -1;

    if (ngx_close_socket(fd) == -1) {
        ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno,
                      ngx_close_socket_n " failed");
    }

    if (c->pool) {
        ngx_destroy_pool(c->pool);
    }
}


u_char *
ngx_acceptex_log_error(ngx_log_t *log, u_char *buf, size_t len)
{
    return ngx_snprintf(buf, len, " while posting AcceptEx() on %V", log->data);
}