
/*
 * Copyright (C) Igor Sysoev
 */


#ifndef _NGX_EVENT_CONNECT_H_INCLUDED_
#define _NGX_EVENT_CONNECT_H_INCLUDED_


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


#define NGX_CONNECT_ERROR   -10


typedef struct {
    struct sockaddr    *sockaddr;
    socklen_t           socklen;

    ngx_str_t           name;
    char               *uri_separator;

    ngx_uint_t          weight;

    ngx_uint_t          fails;
    time_t              accessed;

    ngx_uint_t          max_fails;
    time_t              fail_timeout;
} ngx_peer_t;


struct ngx_peers_s {
    ngx_uint_t          current;
    ngx_uint_t          weight;

    ngx_uint_t          number;
    ngx_uint_t          last_cached;

 /* ngx_mutex_t        *mutex; */
    ngx_connection_t  **cached;

    ngx_peer_t          peer[1];
};


typedef struct {
    ngx_peers_t        *peers;
    ngx_uint_t          cur_peer;
    ngx_uint_t          tries;

    ngx_connection_t   *connection;
#if (NGX_THREADS)
    ngx_atomic_t       *lock;
#endif

    int                 rcvbuf;

    ngx_log_t          *log;

    unsigned            cached:1;
    unsigned            log_error:2;  /* ngx_connection_log_error_e */
} ngx_peer_connection_t;


ngx_int_t ngx_event_connect_peer(ngx_peer_connection_t *pc);
void ngx_event_connect_peer_failed(ngx_peer_connection_t *pc, ngx_uint_t down);


#endif /* _NGX_EVENT_CONNECT_H_INCLUDED_ */