Annotation of embedaddon/nginx/src/core/ngx_connection.h, revision 1.1
1.1 ! misho 1:
! 2: /*
! 3: * Copyright (C) Igor Sysoev
! 4: * Copyright (C) Nginx, Inc.
! 5: */
! 6:
! 7:
! 8: #ifndef _NGX_CONNECTION_H_INCLUDED_
! 9: #define _NGX_CONNECTION_H_INCLUDED_
! 10:
! 11:
! 12: #include <ngx_config.h>
! 13: #include <ngx_core.h>
! 14:
! 15:
! 16: typedef struct ngx_listening_s ngx_listening_t;
! 17:
! 18: struct ngx_listening_s {
! 19: ngx_socket_t fd;
! 20:
! 21: struct sockaddr *sockaddr;
! 22: socklen_t socklen; /* size of sockaddr */
! 23: size_t addr_text_max_len;
! 24: ngx_str_t addr_text;
! 25:
! 26: int type;
! 27:
! 28: int backlog;
! 29: int rcvbuf;
! 30: int sndbuf;
! 31: #if (NGX_HAVE_KEEPALIVE_TUNABLE)
! 32: int keepidle;
! 33: int keepintvl;
! 34: int keepcnt;
! 35: #endif
! 36:
! 37: /* handler of accepted connection */
! 38: ngx_connection_handler_pt handler;
! 39:
! 40: void *servers; /* array of ngx_http_in_addr_t, for example */
! 41:
! 42: ngx_log_t log;
! 43: ngx_log_t *logp;
! 44:
! 45: size_t pool_size;
! 46: /* should be here because of the AcceptEx() preread */
! 47: size_t post_accept_buffer_size;
! 48: /* should be here because of the deferred accept */
! 49: ngx_msec_t post_accept_timeout;
! 50:
! 51: ngx_listening_t *previous;
! 52: ngx_connection_t *connection;
! 53:
! 54: unsigned open:1;
! 55: unsigned remain:1;
! 56: unsigned ignore:1;
! 57:
! 58: unsigned bound:1; /* already bound */
! 59: unsigned inherited:1; /* inherited from previous process */
! 60: unsigned nonblocking_accept:1;
! 61: unsigned listen:1;
! 62: unsigned nonblocking:1;
! 63: unsigned shared:1; /* shared between threads or processes */
! 64: unsigned addr_ntop:1;
! 65:
! 66: #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
! 67: unsigned ipv6only:1;
! 68: #endif
! 69: unsigned keepalive:2;
! 70:
! 71: #if (NGX_HAVE_DEFERRED_ACCEPT)
! 72: unsigned deferred_accept:1;
! 73: unsigned delete_deferred:1;
! 74: unsigned add_deferred:1;
! 75: #ifdef SO_ACCEPTFILTER
! 76: char *accept_filter;
! 77: #endif
! 78: #endif
! 79: #if (NGX_HAVE_SETFIB)
! 80: int setfib;
! 81: #endif
! 82:
! 83: };
! 84:
! 85:
! 86: typedef enum {
! 87: NGX_ERROR_ALERT = 0,
! 88: NGX_ERROR_ERR,
! 89: NGX_ERROR_INFO,
! 90: NGX_ERROR_IGNORE_ECONNRESET,
! 91: NGX_ERROR_IGNORE_EINVAL
! 92: } ngx_connection_log_error_e;
! 93:
! 94:
! 95: typedef enum {
! 96: NGX_TCP_NODELAY_UNSET = 0,
! 97: NGX_TCP_NODELAY_SET,
! 98: NGX_TCP_NODELAY_DISABLED
! 99: } ngx_connection_tcp_nodelay_e;
! 100:
! 101:
! 102: typedef enum {
! 103: NGX_TCP_NOPUSH_UNSET = 0,
! 104: NGX_TCP_NOPUSH_SET,
! 105: NGX_TCP_NOPUSH_DISABLED
! 106: } ngx_connection_tcp_nopush_e;
! 107:
! 108:
! 109: #define NGX_LOWLEVEL_BUFFERED 0x0f
! 110: #define NGX_SSL_BUFFERED 0x01
! 111:
! 112:
! 113: struct ngx_connection_s {
! 114: void *data;
! 115: ngx_event_t *read;
! 116: ngx_event_t *write;
! 117:
! 118: ngx_socket_t fd;
! 119:
! 120: ngx_recv_pt recv;
! 121: ngx_send_pt send;
! 122: ngx_recv_chain_pt recv_chain;
! 123: ngx_send_chain_pt send_chain;
! 124:
! 125: ngx_listening_t *listening;
! 126:
! 127: off_t sent;
! 128:
! 129: ngx_log_t *log;
! 130:
! 131: ngx_pool_t *pool;
! 132:
! 133: struct sockaddr *sockaddr;
! 134: socklen_t socklen;
! 135: ngx_str_t addr_text;
! 136:
! 137: #if (NGX_SSL)
! 138: ngx_ssl_connection_t *ssl;
! 139: #endif
! 140:
! 141: struct sockaddr *local_sockaddr;
! 142:
! 143: ngx_buf_t *buffer;
! 144:
! 145: ngx_queue_t queue;
! 146:
! 147: ngx_atomic_uint_t number;
! 148:
! 149: ngx_uint_t requests;
! 150:
! 151: unsigned buffered:8;
! 152:
! 153: unsigned log_error:3; /* ngx_connection_log_error_e */
! 154:
! 155: unsigned unexpected_eof:1;
! 156: unsigned timedout:1;
! 157: unsigned error:1;
! 158: unsigned destroyed:1;
! 159:
! 160: unsigned idle:1;
! 161: unsigned reusable:1;
! 162: unsigned close:1;
! 163:
! 164: unsigned sendfile:1;
! 165: unsigned sndlowat:1;
! 166: unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */
! 167: unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */
! 168:
! 169: #if (NGX_HAVE_IOCP)
! 170: unsigned accept_context_updated:1;
! 171: #endif
! 172:
! 173: #if (NGX_HAVE_AIO_SENDFILE)
! 174: unsigned aio_sendfile:1;
! 175: ngx_buf_t *busy_sendfile;
! 176: #endif
! 177:
! 178: #if (NGX_THREADS)
! 179: ngx_atomic_t lock;
! 180: #endif
! 181: };
! 182:
! 183:
! 184: ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, void *sockaddr,
! 185: socklen_t socklen);
! 186: ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle);
! 187: ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
! 188: void ngx_configure_listening_sockets(ngx_cycle_t *cycle);
! 189: void ngx_close_listening_sockets(ngx_cycle_t *cycle);
! 190: void ngx_close_connection(ngx_connection_t *c);
! 191: ngx_int_t ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
! 192: ngx_uint_t port);
! 193: ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text);
! 194:
! 195: ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
! 196: void ngx_free_connection(ngx_connection_t *c);
! 197:
! 198: void ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable);
! 199:
! 200: #endif /* _NGX_CONNECTION_H_INCLUDED_ */
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