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/*
* Copyright (C) Igor Sysoev
*/
#ifndef _NGX_CONNECTION_H_INCLUDED_
#define _NGX_CONNECTION_H_INCLUDED_
#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;
/* 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;
#endif
#if (NGX_HAVE_DEFERRED_ACCEPT)
unsigned deferred_accept:1;
unsigned delete_deferred:1;
unsigned add_deferred:1;
#ifdef SO_ACCEPTFILTER
char *accept_filter;
#endif
#endif
#if (NGX_HAVE_SETFIB)
int setfib;
#endif
};
typedef enum {
NGX_ERROR_ALERT = 0,
NGX_ERROR_ERR,
NGX_ERROR_INFO,
NGX_ERROR_IGNORE_ECONNRESET,
NGX_ERROR_IGNORE_EINVAL
} ngx_connection_log_error_e;
typedef enum {
NGX_TCP_NODELAY_UNSET = 0,
NGX_TCP_NODELAY_SET,
NGX_TCP_NODELAY_DISABLED
} ngx_connection_tcp_nodelay_e;
typedef enum {
NGX_TCP_NOPUSH_UNSET = 0,
NGX_TCP_NOPUSH_SET,
NGX_TCP_NOPUSH_DISABLED
} ngx_connection_tcp_nopush_e;
#define NGX_LOWLEVEL_BUFFERED 0x0f
#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;
#endif
struct sockaddr *local_sockaddr;
ngx_buf_t *buffer;
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 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 */
#if (NGX_HAVE_IOCP)
unsigned accept_context_updated:1;
#endif
#if (NGX_HAVE_AIO_SENDFILE)
unsigned aio_sendfile:1;
ngx_buf_t *busy_sendfile;
#endif
#if (NGX_THREADS)
ngx_atomic_t lock;
#endif
};
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);
#endif /* _NGX_CONNECTION_H_INCLUDED_ */
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