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224
src/core/ngx_connection.h
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224
src/core/ngx_connection.h
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/*
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* Copyright (C) Igor Sysoev
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* Copyright (C) Nginx, Inc.
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*/
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#ifndef _NGX_CONNECTION_H_INCLUDED_
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#define _NGX_CONNECTION_H_INCLUDED_
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#include <ngx_config.h>
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#include <ngx_core.h>
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typedef struct ngx_listening_s ngx_listening_t;
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struct ngx_listening_s {
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ngx_socket_t fd;
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struct sockaddr *sockaddr;
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socklen_t socklen; /* size of sockaddr */
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size_t addr_text_max_len;
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ngx_str_t addr_text;
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int type;
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int backlog;
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int rcvbuf;
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int sndbuf;
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#if (NGX_HAVE_KEEPALIVE_TUNABLE)
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int keepidle;
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int keepintvl;
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int keepcnt;
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#endif
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/* handler of accepted connection */
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ngx_connection_handler_pt handler;
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void *servers; /* array of ngx_http_in_addr_t, for example */
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ngx_log_t log;
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ngx_log_t *logp;
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size_t pool_size;
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/* should be here because of the AcceptEx() preread */
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size_t post_accept_buffer_size;
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/* should be here because of the deferred accept */
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ngx_msec_t post_accept_timeout;
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ngx_listening_t *previous;
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ngx_connection_t *connection;
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ngx_uint_t worker;
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unsigned open:1;
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unsigned remain:1;
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unsigned ignore:1;
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unsigned bound:1; /* already bound */
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unsigned inherited:1; /* inherited from previous process */
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unsigned nonblocking_accept:1;
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unsigned listen:1;
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unsigned nonblocking:1;
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unsigned shared:1; /* shared between threads or processes */
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unsigned addr_ntop:1;
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unsigned wildcard:1;
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#if (NGX_HAVE_INET6)
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unsigned ipv6only:1;
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#endif
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unsigned reuseport:1;
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unsigned add_reuseport:1;
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unsigned keepalive:2;
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unsigned deferred_accept:1;
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unsigned delete_deferred:1;
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unsigned add_deferred:1;
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#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
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char *accept_filter;
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#endif
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#if (NGX_HAVE_SETFIB)
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int setfib;
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#endif
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#if (NGX_HAVE_TCP_FASTOPEN)
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int fastopen;
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#endif
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};
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typedef enum {
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NGX_ERROR_ALERT = 0,
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NGX_ERROR_ERR,
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NGX_ERROR_INFO,
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NGX_ERROR_IGNORE_ECONNRESET,
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NGX_ERROR_IGNORE_EINVAL
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} ngx_connection_log_error_e;
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typedef enum {
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NGX_TCP_NODELAY_UNSET = 0,
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NGX_TCP_NODELAY_SET,
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NGX_TCP_NODELAY_DISABLED
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} ngx_connection_tcp_nodelay_e;
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typedef enum {
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NGX_TCP_NOPUSH_UNSET = 0,
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NGX_TCP_NOPUSH_SET,
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NGX_TCP_NOPUSH_DISABLED
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} ngx_connection_tcp_nopush_e;
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#define NGX_LOWLEVEL_BUFFERED 0x0f
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#define NGX_SSL_BUFFERED 0x01
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#define NGX_HTTP_V2_BUFFERED 0x02
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struct ngx_connection_s {
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void *data;
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ngx_event_t *read;
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ngx_event_t *write;
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ngx_socket_t fd;
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ngx_recv_pt recv;
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ngx_send_pt send;
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ngx_recv_chain_pt recv_chain;
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ngx_send_chain_pt send_chain;
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ngx_listening_t *listening;
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off_t sent;
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ngx_log_t *log;
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ngx_pool_t *pool;
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int type;
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struct sockaddr *sockaddr;
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socklen_t socklen;
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ngx_str_t addr_text;
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ngx_str_t proxy_protocol_addr;
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in_port_t proxy_protocol_port;
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#if (NGX_SSL || NGX_COMPAT)
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ngx_ssl_connection_t *ssl;
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#endif
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struct sockaddr *local_sockaddr;
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socklen_t local_socklen;
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ngx_buf_t *buffer;
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ngx_queue_t queue;
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ngx_atomic_uint_t number;
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ngx_uint_t requests;
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unsigned buffered:8;
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unsigned log_error:3; /* ngx_connection_log_error_e */
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unsigned timedout:1;
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unsigned error:1;
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unsigned destroyed:1;
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unsigned idle:1;
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unsigned reusable:1;
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unsigned close:1;
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unsigned shared:1;
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unsigned sendfile:1;
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unsigned sndlowat:1;
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unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */
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unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */
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unsigned need_last_buf:1;
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#if (NGX_HAVE_AIO_SENDFILE || NGX_COMPAT)
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unsigned busy_count:2;
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#endif
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#if (NGX_THREADS || NGX_COMPAT)
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ngx_thread_task_t *sendfile_task;
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#endif
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};
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#define ngx_set_connection_log(c, l) \
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\
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c->log->file = l->file; \
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c->log->next = l->next; \
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c->log->writer = l->writer; \
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c->log->wdata = l->wdata; \
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if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) { \
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c->log->log_level = l->log_level; \
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}
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ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, struct sockaddr *sockaddr,
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socklen_t socklen);
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ngx_int_t ngx_clone_listening(ngx_conf_t *cf, ngx_listening_t *ls);
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ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle);
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ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
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void ngx_configure_listening_sockets(ngx_cycle_t *cycle);
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void ngx_close_listening_sockets(ngx_cycle_t *cycle);
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void ngx_close_connection(ngx_connection_t *c);
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void ngx_close_idle_connections(ngx_cycle_t *cycle);
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ngx_int_t ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
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ngx_uint_t port);
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ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text);
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ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
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void ngx_free_connection(ngx_connection_t *c);
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void ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable);
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#endif /* _NGX_CONNECTION_H_INCLUDED_ */
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