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#ifndef _NGX_TCP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
#define _NGX_TCP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_
#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_tcp.h>
typedef struct {
struct sockaddr *sockaddr;
socklen_t socklen;
ngx_str_t name;
ngx_int_t current_weight;
ngx_int_t weight;
ngx_uint_t fails;
time_t accessed;
ngx_uint_t max_fails;
time_t fail_timeout;
ngx_uint_t check_index;
ngx_uint_t down; /* unsigned down:1; */
#if (NGX_TCP_SSL)
ngx_ssl_session_t *ssl_session; /* local to a process */
#endif
} ngx_tcp_upstream_rr_peer_t;
typedef struct ngx_tcp_upstream_rr_peers_s ngx_tcp_upstream_rr_peers_t;
struct ngx_tcp_upstream_rr_peers_s {
ngx_uint_t single; /* unsigned single:1; */
ngx_uint_t number;
ngx_uint_t last_cached;
/* ngx_mutex_t *mutex; */
ngx_connection_t **cached;
ngx_str_t *name;
ngx_tcp_upstream_rr_peers_t *next;
ngx_tcp_upstream_rr_peer_t peer[1];
};
typedef struct {
ngx_tcp_upstream_rr_peers_t *peers;
ngx_uint_t current;
uintptr_t *tried;
uintptr_t data;
} ngx_tcp_upstream_rr_peer_data_t;
ngx_int_t ngx_tcp_upstream_init_round_robin(ngx_conf_t *cf,
ngx_tcp_upstream_srv_conf_t *us);
ngx_int_t ngx_tcp_upstream_init_round_robin_peer(ngx_tcp_session_t *s,
ngx_tcp_upstream_srv_conf_t *us);
ngx_int_t ngx_tcp_upstream_create_round_robin_peer(ngx_tcp_session_t *s,
ngx_tcp_upstream_resolved_t *ur);
ngx_int_t ngx_tcp_upstream_get_round_robin_peer(ngx_peer_connection_t *pc,
void *data);
void ngx_tcp_upstream_free_round_robin_peer(ngx_peer_connection_t *pc,
void *data, ngx_uint_t state);
#if (NGX_TCP_SSL)
ngx_int_t ngx_tcp_upstream_set_round_robin_peer_session(
ngx_peer_connection_t *pc, void *data);
void ngx_tcp_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
void *data);
#endif
#endif /* _NGX_TCP_UPSTREAM_ROUND_ROBIN_H_INCLUDED_ */
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