mirror of
https://github.com/nginx/nginx.git
synced 2024-12-03 21:18:59 +08:00
cfa669151e
Previously, the number of next_upstream tries included servers marked as "down", resulting in "no live upstreams" with the code 502 instead of the code derived from an attempt to connect to the last tried "up" server (ticket #2096).
886 lines
23 KiB
C
886 lines
23 KiB
C
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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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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_stream.h>
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#define ngx_stream_upstream_tries(p) ((p)->tries \
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+ ((p)->next ? (p)->next->tries : 0))
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static ngx_stream_upstream_rr_peer_t *ngx_stream_upstream_get_peer(
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ngx_stream_upstream_rr_peer_data_t *rrp);
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static void ngx_stream_upstream_notify_round_robin_peer(
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ngx_peer_connection_t *pc, void *data, ngx_uint_t state);
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#if (NGX_STREAM_SSL)
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static ngx_int_t ngx_stream_upstream_set_round_robin_peer_session(
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ngx_peer_connection_t *pc, void *data);
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static void ngx_stream_upstream_save_round_robin_peer_session(
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ngx_peer_connection_t *pc, void *data);
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static ngx_int_t ngx_stream_upstream_empty_set_session(
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ngx_peer_connection_t *pc, void *data);
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static void ngx_stream_upstream_empty_save_session(ngx_peer_connection_t *pc,
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void *data);
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#endif
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ngx_int_t
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ngx_stream_upstream_init_round_robin(ngx_conf_t *cf,
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ngx_stream_upstream_srv_conf_t *us)
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{
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ngx_url_t u;
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ngx_uint_t i, j, n, w, t;
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ngx_stream_upstream_server_t *server;
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ngx_stream_upstream_rr_peer_t *peer, **peerp;
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ngx_stream_upstream_rr_peers_t *peers, *backup;
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us->peer.init = ngx_stream_upstream_init_round_robin_peer;
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if (us->servers) {
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server = us->servers->elts;
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n = 0;
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w = 0;
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t = 0;
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for (i = 0; i < us->servers->nelts; i++) {
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if (server[i].backup) {
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continue;
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}
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n += server[i].naddrs;
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w += server[i].naddrs * server[i].weight;
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if (!server[i].down) {
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t += server[i].naddrs;
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}
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}
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if (n == 0) {
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ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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"no servers in upstream \"%V\" in %s:%ui",
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&us->host, us->file_name, us->line);
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return NGX_ERROR;
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}
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peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t));
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if (peers == NULL) {
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return NGX_ERROR;
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}
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peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n);
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if (peer == NULL) {
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return NGX_ERROR;
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}
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peers->single = (n == 1);
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peers->number = n;
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peers->weighted = (w != n);
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peers->total_weight = w;
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peers->tries = t;
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peers->name = &us->host;
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n = 0;
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peerp = &peers->peer;
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for (i = 0; i < us->servers->nelts; i++) {
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if (server[i].backup) {
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continue;
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}
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for (j = 0; j < server[i].naddrs; j++) {
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peer[n].sockaddr = server[i].addrs[j].sockaddr;
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peer[n].socklen = server[i].addrs[j].socklen;
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peer[n].name = server[i].addrs[j].name;
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peer[n].weight = server[i].weight;
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peer[n].effective_weight = server[i].weight;
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peer[n].current_weight = 0;
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peer[n].max_conns = server[i].max_conns;
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peer[n].max_fails = server[i].max_fails;
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peer[n].fail_timeout = server[i].fail_timeout;
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peer[n].down = server[i].down;
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peer[n].server = server[i].name;
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*peerp = &peer[n];
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peerp = &peer[n].next;
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n++;
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}
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}
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us->peer.data = peers;
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/* backup servers */
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n = 0;
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w = 0;
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t = 0;
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for (i = 0; i < us->servers->nelts; i++) {
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if (!server[i].backup) {
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continue;
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}
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n += server[i].naddrs;
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w += server[i].naddrs * server[i].weight;
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if (!server[i].down) {
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t += server[i].naddrs;
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}
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}
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if (n == 0) {
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return NGX_OK;
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}
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backup = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t));
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if (backup == NULL) {
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return NGX_ERROR;
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}
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peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n);
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if (peer == NULL) {
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return NGX_ERROR;
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}
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peers->single = 0;
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backup->single = 0;
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backup->number = n;
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backup->weighted = (w != n);
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backup->total_weight = w;
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backup->tries = t;
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backup->name = &us->host;
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n = 0;
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peerp = &backup->peer;
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for (i = 0; i < us->servers->nelts; i++) {
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if (!server[i].backup) {
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continue;
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}
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for (j = 0; j < server[i].naddrs; j++) {
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peer[n].sockaddr = server[i].addrs[j].sockaddr;
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peer[n].socklen = server[i].addrs[j].socklen;
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peer[n].name = server[i].addrs[j].name;
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peer[n].weight = server[i].weight;
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peer[n].effective_weight = server[i].weight;
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peer[n].current_weight = 0;
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peer[n].max_conns = server[i].max_conns;
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peer[n].max_fails = server[i].max_fails;
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peer[n].fail_timeout = server[i].fail_timeout;
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peer[n].down = server[i].down;
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peer[n].server = server[i].name;
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*peerp = &peer[n];
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peerp = &peer[n].next;
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n++;
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}
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}
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peers->next = backup;
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return NGX_OK;
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}
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/* an upstream implicitly defined by proxy_pass, etc. */
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if (us->port == 0) {
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ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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"no port in upstream \"%V\" in %s:%ui",
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&us->host, us->file_name, us->line);
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return NGX_ERROR;
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}
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ngx_memzero(&u, sizeof(ngx_url_t));
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u.host = us->host;
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u.port = us->port;
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if (ngx_inet_resolve_host(cf->pool, &u) != NGX_OK) {
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if (u.err) {
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ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
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"%s in upstream \"%V\" in %s:%ui",
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u.err, &us->host, us->file_name, us->line);
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}
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return NGX_ERROR;
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}
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n = u.naddrs;
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peers = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peers_t));
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if (peers == NULL) {
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return NGX_ERROR;
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}
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peer = ngx_pcalloc(cf->pool, sizeof(ngx_stream_upstream_rr_peer_t) * n);
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if (peer == NULL) {
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return NGX_ERROR;
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}
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peers->single = (n == 1);
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peers->number = n;
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peers->weighted = 0;
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peers->total_weight = n;
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peers->tries = n;
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peers->name = &us->host;
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peerp = &peers->peer;
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for (i = 0; i < u.naddrs; i++) {
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peer[i].sockaddr = u.addrs[i].sockaddr;
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peer[i].socklen = u.addrs[i].socklen;
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peer[i].name = u.addrs[i].name;
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peer[i].weight = 1;
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peer[i].effective_weight = 1;
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peer[i].current_weight = 0;
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peer[i].max_conns = 0;
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peer[i].max_fails = 1;
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peer[i].fail_timeout = 10;
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*peerp = &peer[i];
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peerp = &peer[i].next;
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}
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us->peer.data = peers;
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/* implicitly defined upstream has no backup servers */
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return NGX_OK;
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}
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ngx_int_t
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ngx_stream_upstream_init_round_robin_peer(ngx_stream_session_t *s,
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ngx_stream_upstream_srv_conf_t *us)
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{
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ngx_uint_t n;
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ngx_stream_upstream_rr_peer_data_t *rrp;
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rrp = s->upstream->peer.data;
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if (rrp == NULL) {
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rrp = ngx_palloc(s->connection->pool,
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sizeof(ngx_stream_upstream_rr_peer_data_t));
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if (rrp == NULL) {
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return NGX_ERROR;
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}
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s->upstream->peer.data = rrp;
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}
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rrp->peers = us->peer.data;
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rrp->current = NULL;
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rrp->config = 0;
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n = rrp->peers->number;
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if (rrp->peers->next && rrp->peers->next->number > n) {
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n = rrp->peers->next->number;
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}
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if (n <= 8 * sizeof(uintptr_t)) {
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rrp->tried = &rrp->data;
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rrp->data = 0;
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} else {
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n = (n + (8 * sizeof(uintptr_t) - 1)) / (8 * sizeof(uintptr_t));
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rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t));
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if (rrp->tried == NULL) {
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return NGX_ERROR;
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}
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}
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s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer;
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s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer;
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s->upstream->peer.notify = ngx_stream_upstream_notify_round_robin_peer;
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s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers);
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#if (NGX_STREAM_SSL)
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s->upstream->peer.set_session =
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ngx_stream_upstream_set_round_robin_peer_session;
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s->upstream->peer.save_session =
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ngx_stream_upstream_save_round_robin_peer_session;
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#endif
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return NGX_OK;
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}
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ngx_int_t
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ngx_stream_upstream_create_round_robin_peer(ngx_stream_session_t *s,
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ngx_stream_upstream_resolved_t *ur)
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{
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u_char *p;
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size_t len;
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socklen_t socklen;
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ngx_uint_t i, n;
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struct sockaddr *sockaddr;
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ngx_stream_upstream_rr_peer_t *peer, **peerp;
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ngx_stream_upstream_rr_peers_t *peers;
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ngx_stream_upstream_rr_peer_data_t *rrp;
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rrp = s->upstream->peer.data;
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if (rrp == NULL) {
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rrp = ngx_palloc(s->connection->pool,
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sizeof(ngx_stream_upstream_rr_peer_data_t));
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if (rrp == NULL) {
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return NGX_ERROR;
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}
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s->upstream->peer.data = rrp;
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}
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peers = ngx_pcalloc(s->connection->pool,
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sizeof(ngx_stream_upstream_rr_peers_t));
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if (peers == NULL) {
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return NGX_ERROR;
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}
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peer = ngx_pcalloc(s->connection->pool,
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sizeof(ngx_stream_upstream_rr_peer_t) * ur->naddrs);
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if (peer == NULL) {
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return NGX_ERROR;
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}
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peers->single = (ur->naddrs == 1);
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peers->number = ur->naddrs;
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peers->tries = ur->naddrs;
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peers->name = &ur->host;
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if (ur->sockaddr) {
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peer[0].sockaddr = ur->sockaddr;
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peer[0].socklen = ur->socklen;
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peer[0].name = ur->name;
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peer[0].weight = 1;
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peer[0].effective_weight = 1;
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peer[0].current_weight = 0;
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peer[0].max_conns = 0;
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peer[0].max_fails = 1;
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peer[0].fail_timeout = 10;
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peers->peer = peer;
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} else {
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peerp = &peers->peer;
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for (i = 0; i < ur->naddrs; i++) {
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socklen = ur->addrs[i].socklen;
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sockaddr = ngx_palloc(s->connection->pool, socklen);
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if (sockaddr == NULL) {
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return NGX_ERROR;
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}
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ngx_memcpy(sockaddr, ur->addrs[i].sockaddr, socklen);
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ngx_inet_set_port(sockaddr, ur->port);
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p = ngx_pnalloc(s->connection->pool, NGX_SOCKADDR_STRLEN);
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if (p == NULL) {
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return NGX_ERROR;
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}
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len = ngx_sock_ntop(sockaddr, socklen, p, NGX_SOCKADDR_STRLEN, 1);
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peer[i].sockaddr = sockaddr;
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peer[i].socklen = socklen;
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peer[i].name.len = len;
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peer[i].name.data = p;
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peer[i].weight = 1;
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peer[i].effective_weight = 1;
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peer[i].current_weight = 0;
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peer[i].max_conns = 0;
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peer[i].max_fails = 1;
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peer[i].fail_timeout = 10;
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*peerp = &peer[i];
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peerp = &peer[i].next;
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}
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}
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rrp->peers = peers;
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rrp->current = NULL;
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rrp->config = 0;
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if (rrp->peers->number <= 8 * sizeof(uintptr_t)) {
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rrp->tried = &rrp->data;
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rrp->data = 0;
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} else {
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n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1))
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/ (8 * sizeof(uintptr_t));
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rrp->tried = ngx_pcalloc(s->connection->pool, n * sizeof(uintptr_t));
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if (rrp->tried == NULL) {
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return NGX_ERROR;
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}
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}
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s->upstream->peer.get = ngx_stream_upstream_get_round_robin_peer;
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s->upstream->peer.free = ngx_stream_upstream_free_round_robin_peer;
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s->upstream->peer.tries = ngx_stream_upstream_tries(rrp->peers);
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#if (NGX_STREAM_SSL)
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s->upstream->peer.set_session = ngx_stream_upstream_empty_set_session;
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s->upstream->peer.save_session = ngx_stream_upstream_empty_save_session;
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#endif
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return NGX_OK;
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}
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ngx_int_t
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ngx_stream_upstream_get_round_robin_peer(ngx_peer_connection_t *pc, void *data)
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{
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ngx_stream_upstream_rr_peer_data_t *rrp = data;
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ngx_int_t rc;
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ngx_uint_t i, n;
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ngx_stream_upstream_rr_peer_t *peer;
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ngx_stream_upstream_rr_peers_t *peers;
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ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0,
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"get rr peer, try: %ui", pc->tries);
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pc->connection = NULL;
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peers = rrp->peers;
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ngx_stream_upstream_rr_peers_wlock(peers);
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if (peers->single) {
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peer = peers->peer;
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if (peer->down) {
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goto failed;
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}
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if (peer->max_conns && peer->conns >= peer->max_conns) {
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goto failed;
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}
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rrp->current = peer;
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} else {
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/* there are several peers */
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peer = ngx_stream_upstream_get_peer(rrp);
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if (peer == NULL) {
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goto failed;
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}
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ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0,
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"get rr peer, current: %p %i",
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peer, peer->current_weight);
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}
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pc->sockaddr = peer->sockaddr;
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pc->socklen = peer->socklen;
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pc->name = &peer->name;
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peer->conns++;
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ngx_stream_upstream_rr_peers_unlock(peers);
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return NGX_OK;
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failed:
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if (peers->next) {
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ngx_log_debug0(NGX_LOG_DEBUG_STREAM, pc->log, 0, "backup servers");
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rrp->peers = peers->next;
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n = (rrp->peers->number + (8 * sizeof(uintptr_t) - 1))
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/ (8 * sizeof(uintptr_t));
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for (i = 0; i < n; i++) {
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rrp->tried[i] = 0;
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}
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|
ngx_stream_upstream_rr_peers_unlock(peers);
|
|
|
|
rc = ngx_stream_upstream_get_round_robin_peer(pc, rrp);
|
|
|
|
if (rc != NGX_BUSY) {
|
|
return rc;
|
|
}
|
|
|
|
ngx_stream_upstream_rr_peers_wlock(peers);
|
|
}
|
|
|
|
ngx_stream_upstream_rr_peers_unlock(peers);
|
|
|
|
pc->name = peers->name;
|
|
|
|
return NGX_BUSY;
|
|
}
|
|
|
|
|
|
static ngx_stream_upstream_rr_peer_t *
|
|
ngx_stream_upstream_get_peer(ngx_stream_upstream_rr_peer_data_t *rrp)
|
|
{
|
|
time_t now;
|
|
uintptr_t m;
|
|
ngx_int_t total;
|
|
ngx_uint_t i, n, p;
|
|
ngx_stream_upstream_rr_peer_t *peer, *best;
|
|
|
|
now = ngx_time();
|
|
|
|
best = NULL;
|
|
total = 0;
|
|
|
|
#if (NGX_SUPPRESS_WARN)
|
|
p = 0;
|
|
#endif
|
|
|
|
for (peer = rrp->peers->peer, i = 0;
|
|
peer;
|
|
peer = peer->next, i++)
|
|
{
|
|
n = i / (8 * sizeof(uintptr_t));
|
|
m = (uintptr_t) 1 << i % (8 * sizeof(uintptr_t));
|
|
|
|
if (rrp->tried[n] & m) {
|
|
continue;
|
|
}
|
|
|
|
if (peer->down) {
|
|
continue;
|
|
}
|
|
|
|
if (peer->max_fails
|
|
&& peer->fails >= peer->max_fails
|
|
&& now - peer->checked <= peer->fail_timeout)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if (peer->max_conns && peer->conns >= peer->max_conns) {
|
|
continue;
|
|
}
|
|
|
|
peer->current_weight += peer->effective_weight;
|
|
total += peer->effective_weight;
|
|
|
|
if (peer->effective_weight < peer->weight) {
|
|
peer->effective_weight++;
|
|
}
|
|
|
|
if (best == NULL || peer->current_weight > best->current_weight) {
|
|
best = peer;
|
|
p = i;
|
|
}
|
|
}
|
|
|
|
if (best == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
rrp->current = best;
|
|
|
|
n = p / (8 * sizeof(uintptr_t));
|
|
m = (uintptr_t) 1 << p % (8 * sizeof(uintptr_t));
|
|
|
|
rrp->tried[n] |= m;
|
|
|
|
best->current_weight -= total;
|
|
|
|
if (now - best->checked > best->fail_timeout) {
|
|
best->checked = now;
|
|
}
|
|
|
|
return best;
|
|
}
|
|
|
|
|
|
void
|
|
ngx_stream_upstream_free_round_robin_peer(ngx_peer_connection_t *pc, void *data,
|
|
ngx_uint_t state)
|
|
{
|
|
ngx_stream_upstream_rr_peer_data_t *rrp = data;
|
|
|
|
time_t now;
|
|
ngx_stream_upstream_rr_peer_t *peer;
|
|
|
|
ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0,
|
|
"free rr peer %ui %ui", pc->tries, state);
|
|
|
|
peer = rrp->current;
|
|
|
|
ngx_stream_upstream_rr_peers_rlock(rrp->peers);
|
|
ngx_stream_upstream_rr_peer_lock(rrp->peers, peer);
|
|
|
|
if (rrp->peers->single) {
|
|
peer->conns--;
|
|
|
|
ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer);
|
|
ngx_stream_upstream_rr_peers_unlock(rrp->peers);
|
|
|
|
pc->tries = 0;
|
|
return;
|
|
}
|
|
|
|
if (state & NGX_PEER_FAILED) {
|
|
now = ngx_time();
|
|
|
|
peer->fails++;
|
|
peer->accessed = now;
|
|
peer->checked = now;
|
|
|
|
if (peer->max_fails) {
|
|
peer->effective_weight -= peer->weight / peer->max_fails;
|
|
|
|
if (peer->fails >= peer->max_fails) {
|
|
ngx_log_error(NGX_LOG_WARN, pc->log, 0,
|
|
"upstream server temporarily disabled");
|
|
}
|
|
}
|
|
|
|
ngx_log_debug2(NGX_LOG_DEBUG_STREAM, pc->log, 0,
|
|
"free rr peer failed: %p %i",
|
|
peer, peer->effective_weight);
|
|
|
|
if (peer->effective_weight < 0) {
|
|
peer->effective_weight = 0;
|
|
}
|
|
|
|
} else {
|
|
|
|
/* mark peer live if check passed */
|
|
|
|
if (peer->accessed < peer->checked) {
|
|
peer->fails = 0;
|
|
}
|
|
}
|
|
|
|
peer->conns--;
|
|
|
|
ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer);
|
|
ngx_stream_upstream_rr_peers_unlock(rrp->peers);
|
|
|
|
if (pc->tries) {
|
|
pc->tries--;
|
|
}
|
|
}
|
|
|
|
|
|
static void
|
|
ngx_stream_upstream_notify_round_robin_peer(ngx_peer_connection_t *pc,
|
|
void *data, ngx_uint_t type)
|
|
{
|
|
ngx_stream_upstream_rr_peer_data_t *rrp = data;
|
|
|
|
ngx_stream_upstream_rr_peer_t *peer;
|
|
|
|
peer = rrp->current;
|
|
|
|
if (type == NGX_STREAM_UPSTREAM_NOTIFY_CONNECT
|
|
&& pc->connection->type == SOCK_STREAM)
|
|
{
|
|
ngx_stream_upstream_rr_peers_rlock(rrp->peers);
|
|
ngx_stream_upstream_rr_peer_lock(rrp->peers, peer);
|
|
|
|
if (peer->accessed < peer->checked) {
|
|
peer->fails = 0;
|
|
}
|
|
|
|
ngx_stream_upstream_rr_peer_unlock(rrp->peers, peer);
|
|
ngx_stream_upstream_rr_peers_unlock(rrp->peers);
|
|
}
|
|
}
|
|
|
|
|
|
#if (NGX_STREAM_SSL)
|
|
|
|
static ngx_int_t
|
|
ngx_stream_upstream_set_round_robin_peer_session(ngx_peer_connection_t *pc,
|
|
void *data)
|
|
{
|
|
ngx_stream_upstream_rr_peer_data_t *rrp = data;
|
|
|
|
ngx_int_t rc;
|
|
ngx_ssl_session_t *ssl_session;
|
|
ngx_stream_upstream_rr_peer_t *peer;
|
|
#if (NGX_STREAM_UPSTREAM_ZONE)
|
|
int len;
|
|
const u_char *p;
|
|
ngx_stream_upstream_rr_peers_t *peers;
|
|
u_char buf[NGX_SSL_MAX_SESSION_SIZE];
|
|
#endif
|
|
|
|
peer = rrp->current;
|
|
|
|
#if (NGX_STREAM_UPSTREAM_ZONE)
|
|
peers = rrp->peers;
|
|
|
|
if (peers->shpool) {
|
|
ngx_stream_upstream_rr_peers_rlock(peers);
|
|
ngx_stream_upstream_rr_peer_lock(peers, peer);
|
|
|
|
if (peer->ssl_session == NULL) {
|
|
ngx_stream_upstream_rr_peer_unlock(peers, peer);
|
|
ngx_stream_upstream_rr_peers_unlock(peers);
|
|
return NGX_OK;
|
|
}
|
|
|
|
len = peer->ssl_session_len;
|
|
|
|
ngx_memcpy(buf, peer->ssl_session, len);
|
|
|
|
ngx_stream_upstream_rr_peer_unlock(peers, peer);
|
|
ngx_stream_upstream_rr_peers_unlock(peers);
|
|
|
|
p = buf;
|
|
ssl_session = d2i_SSL_SESSION(NULL, &p, len);
|
|
|
|
rc = ngx_ssl_set_session(pc->connection, ssl_session);
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0,
|
|
"set session: %p", ssl_session);
|
|
|
|
ngx_ssl_free_session(ssl_session);
|
|
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
ssl_session = peer->ssl_session;
|
|
|
|
rc = ngx_ssl_set_session(pc->connection, ssl_session);
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0,
|
|
"set session: %p", ssl_session);
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
static void
|
|
ngx_stream_upstream_save_round_robin_peer_session(ngx_peer_connection_t *pc,
|
|
void *data)
|
|
{
|
|
ngx_stream_upstream_rr_peer_data_t *rrp = data;
|
|
|
|
ngx_ssl_session_t *old_ssl_session, *ssl_session;
|
|
ngx_stream_upstream_rr_peer_t *peer;
|
|
#if (NGX_STREAM_UPSTREAM_ZONE)
|
|
int len;
|
|
u_char *p;
|
|
ngx_stream_upstream_rr_peers_t *peers;
|
|
u_char buf[NGX_SSL_MAX_SESSION_SIZE];
|
|
#endif
|
|
|
|
#if (NGX_STREAM_UPSTREAM_ZONE)
|
|
peers = rrp->peers;
|
|
|
|
if (peers->shpool) {
|
|
|
|
ssl_session = ngx_ssl_get0_session(pc->connection);
|
|
|
|
if (ssl_session == NULL) {
|
|
return;
|
|
}
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0,
|
|
"save session: %p", ssl_session);
|
|
|
|
len = i2d_SSL_SESSION(ssl_session, NULL);
|
|
|
|
/* do not cache too big session */
|
|
|
|
if (len > NGX_SSL_MAX_SESSION_SIZE) {
|
|
return;
|
|
}
|
|
|
|
p = buf;
|
|
(void) i2d_SSL_SESSION(ssl_session, &p);
|
|
|
|
peer = rrp->current;
|
|
|
|
ngx_stream_upstream_rr_peers_rlock(peers);
|
|
ngx_stream_upstream_rr_peer_lock(peers, peer);
|
|
|
|
if (len > peer->ssl_session_len) {
|
|
ngx_shmtx_lock(&peers->shpool->mutex);
|
|
|
|
if (peer->ssl_session) {
|
|
ngx_slab_free_locked(peers->shpool, peer->ssl_session);
|
|
}
|
|
|
|
peer->ssl_session = ngx_slab_alloc_locked(peers->shpool, len);
|
|
|
|
ngx_shmtx_unlock(&peers->shpool->mutex);
|
|
|
|
if (peer->ssl_session == NULL) {
|
|
peer->ssl_session_len = 0;
|
|
|
|
ngx_stream_upstream_rr_peer_unlock(peers, peer);
|
|
ngx_stream_upstream_rr_peers_unlock(peers);
|
|
return;
|
|
}
|
|
|
|
peer->ssl_session_len = len;
|
|
}
|
|
|
|
ngx_memcpy(peer->ssl_session, buf, len);
|
|
|
|
ngx_stream_upstream_rr_peer_unlock(peers, peer);
|
|
ngx_stream_upstream_rr_peers_unlock(peers);
|
|
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
ssl_session = ngx_ssl_get_session(pc->connection);
|
|
|
|
if (ssl_session == NULL) {
|
|
return;
|
|
}
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0,
|
|
"save session: %p", ssl_session);
|
|
|
|
peer = rrp->current;
|
|
|
|
old_ssl_session = peer->ssl_session;
|
|
peer->ssl_session = ssl_session;
|
|
|
|
if (old_ssl_session) {
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_STREAM, pc->log, 0,
|
|
"old session: %p", old_ssl_session);
|
|
|
|
/* TODO: may block */
|
|
|
|
ngx_ssl_free_session(old_ssl_session);
|
|
}
|
|
}
|
|
|
|
|
|
static ngx_int_t
|
|
ngx_stream_upstream_empty_set_session(ngx_peer_connection_t *pc, void *data)
|
|
{
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
static void
|
|
ngx_stream_upstream_empty_save_session(ngx_peer_connection_t *pc, void *data)
|
|
{
|
|
return;
|
|
}
|
|
|
|
#endif
|