view src/core/ngx_connection.h @ 654:753f505670e0 NGINX_1_1_11

nginx 1.1.11 *) Feature: the "so_keepalive" parameter of the "listen" directive. Thanks to Vsevolod Stakhov. *) Feature: the "if_not_empty" parameter of the "fastcgi/scgi/uwsgi_param" directives. *) Feature: the $https variable. *) Feature: the "proxy_redirect" directive supports variables in the first parameter. *) Feature: the "proxy_redirect" directive supports regular expressions. *) Bugfix: the $sent_http_cache_control variable might contain a wrong value if the "expires" directive was used. Thanks to Yichun Zhang. *) Bugfix: the "read_ahead" directive might not work combined with "try_files" and "open_file_cache". *) Bugfix: a segmentation fault might occur in a worker process if small time was used in the "inactive" parameter of the "proxy_cache_path" directive. *) Bugfix: responses from cache might hang.
author Igor Sysoev <>
date Mon, 12 Dec 2011 00:00:00 +0400
parents b9763778e212
children d0f7a625f27c
line wrap: on
line source

 * Copyright (C) Igor Sysoev


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

typedef struct ngx_listening_s  ngx_listening_t;

struct ngx_listening_s {
    ngx_socket_t        fd;

    struct sockaddr    *sockaddr;
    socklen_t           socklen;    /* size of sockaddr */
    size_t              addr_text_max_len;
    ngx_str_t           addr_text;

    int                 type;

    int                 backlog;
    int                 rcvbuf;
    int                 sndbuf;
    int                 keepidle;
    int                 keepintvl;
    int                 keepcnt;

    /* handler of accepted connection */
    ngx_connection_handler_pt   handler;

    void               *servers;  /* array of ngx_http_in_addr_t, for example */

    ngx_log_t           log;
    ngx_log_t          *logp;

    size_t              pool_size;
    /* should be here because of the AcceptEx() preread */
    size_t              post_accept_buffer_size;
    /* should be here because of the deferred accept */
    ngx_msec_t          post_accept_timeout;

    ngx_listening_t    *previous;
    ngx_connection_t   *connection;

    unsigned            open:1;
    unsigned            remain:1;
    unsigned            ignore:1;

    unsigned            bound:1;       /* already bound */
    unsigned            inherited:1;   /* inherited from previous process */
    unsigned            nonblocking_accept:1;
    unsigned            listen:1;
    unsigned            nonblocking:1;
    unsigned            shared:1;    /* shared between threads or processes */
    unsigned            addr_ntop:1;

#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
    unsigned            ipv6only:2;
    unsigned            keepalive:2;

    unsigned            deferred_accept:1;
    unsigned            delete_deferred:1;
    unsigned            add_deferred:1;
    char               *accept_filter;
    int                 setfib;


typedef enum {
} ngx_connection_log_error_e;

typedef enum {
} ngx_connection_tcp_nodelay_e;

typedef enum {
} ngx_connection_tcp_nopush_e;

#define NGX_SSL_BUFFERED       0x01

struct ngx_connection_s {
    void               *data;
    ngx_event_t        *read;
    ngx_event_t        *write;

    ngx_socket_t        fd;

    ngx_recv_pt         recv;
    ngx_send_pt         send;
    ngx_recv_chain_pt   recv_chain;
    ngx_send_chain_pt   send_chain;

    ngx_listening_t    *listening;

    off_t               sent;

    ngx_log_t          *log;

    ngx_pool_t         *pool;

    struct sockaddr    *sockaddr;
    socklen_t           socklen;
    ngx_str_t           addr_text;

#if (NGX_SSL)
    ngx_ssl_connection_t  *ssl;

    struct sockaddr    *local_sockaddr;

    ngx_buf_t          *buffer;

    ngx_queue_t         queue;

    ngx_atomic_uint_t   number;

    ngx_uint_t          requests;

    unsigned            buffered:8;

    unsigned            log_error:3;     /* ngx_connection_log_error_e */

    unsigned            single_connection:1;
    unsigned            unexpected_eof:1;
    unsigned            timedout:1;
    unsigned            error:1;
    unsigned            destroyed:1;

    unsigned            idle:1;
    unsigned            reusable:1;
    unsigned            close:1;

    unsigned            sendfile:1;
    unsigned            sndlowat:1;
    unsigned            tcp_nodelay:2;   /* ngx_connection_tcp_nodelay_e */
    unsigned            tcp_nopush:2;    /* ngx_connection_tcp_nopush_e */

    unsigned            accept_context_updated:1;

    unsigned            aio_sendfile:1;
    ngx_buf_t          *busy_sendfile;

    ngx_atomic_t        lock;

ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, void *sockaddr,
    socklen_t socklen);
ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle);
ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
void ngx_configure_listening_sockets(ngx_cycle_t *cycle);
void ngx_close_listening_sockets(ngx_cycle_t *cycle);
void ngx_close_connection(ngx_connection_t *c);
ngx_int_t ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
    ngx_uint_t port);
ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text);

ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
void ngx_free_connection(ngx_connection_t *c);

void ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable);