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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#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;
#if (NGX_HAVE_KEEPALIVE_TUNABLE)
int keepidle;
int keepintvl;
int keepcnt;
#endif
/* 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;
ngx_uint_t worker;
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;
unsigned wildcard:1;
#if (NGX_HAVE_INET6)
unsigned ipv6only:1;
#endif
unsigned reuseport:1;
unsigned add_reuseport:1;
unsigned keepalive:2;
unsigned deferred_accept:1;
unsigned delete_deferred:1;
unsigned add_deferred:1;
#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
char *accept_filter;
#endif
#if (NGX_HAVE_SETFIB)
int setfib;
#endif
#if (NGX_HAVE_TCP_FASTOPEN)
int fastopen;
#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
#define NGX_HTTP_V2_BUFFERED 0x02
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;
int type;
struct sockaddr *sockaddr;
socklen_t socklen;
ngx_str_t addr_text;
ngx_str_t proxy_protocol_addr;
in_port_t proxy_protocol_port;
#if (NGX_SSL || NGX_COMPAT)
ngx_ssl_connection_t *ssl;
#endif
struct sockaddr *local_sockaddr;
socklen_t local_socklen;
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 timedout:1;
unsigned error:1;
unsigned destroyed:1;
unsigned idle:1;
unsigned reusable:1;
unsigned close:1;
unsigned shared: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 need_last_buf:1;
#if (NGX_HAVE_AIO_SENDFILE || NGX_COMPAT)
unsigned busy_count:2;
#endif
#if (NGX_THREADS || NGX_COMPAT)
ngx_thread_task_t *sendfile_task;
#endif
};
#define ngx_set_connection_log(c, l) \
\
c->log->file = l->file; \
c->log->next = l->next; \
c->log->writer = l->writer; \
c->log->wdata = l->wdata; \
if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) { \
c->log->log_level = l->log_level; \
}
ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, struct sockaddr *sockaddr,
socklen_t socklen);
ngx_int_t ngx_clone_listening(ngx_conf_t *cf, ngx_listening_t *ls);
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);
void ngx_close_idle_connections(ngx_cycle_t *cycle);
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);
#endif /* _NGX_CONNECTION_H_INCLUDED_ */
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