diff options
Diffstat (limited to 'app/nginx/src/http/modules/ngx_http_upstream_keepalive_module.c')
| -rw-r--r-- | app/nginx/src/http/modules/ngx_http_upstream_keepalive_module.c | 529 |
1 files changed, 0 insertions, 529 deletions
diff --git a/app/nginx/src/http/modules/ngx_http_upstream_keepalive_module.c b/app/nginx/src/http/modules/ngx_http_upstream_keepalive_module.c deleted file mode 100644 index 0048e6b..0000000 --- a/app/nginx/src/http/modules/ngx_http_upstream_keepalive_module.c +++ /dev/null @@ -1,529 +0,0 @@ - -/* - * Copyright (C) Maxim Dounin - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_http.h> - - -typedef struct { - ngx_uint_t max_cached; - - ngx_queue_t cache; - ngx_queue_t free; - - ngx_http_upstream_init_pt original_init_upstream; - ngx_http_upstream_init_peer_pt original_init_peer; - -} ngx_http_upstream_keepalive_srv_conf_t; - - -typedef struct { - ngx_http_upstream_keepalive_srv_conf_t *conf; - - ngx_queue_t queue; - ngx_connection_t *connection; - - socklen_t socklen; - ngx_sockaddr_t sockaddr; - -} ngx_http_upstream_keepalive_cache_t; - - -typedef struct { - ngx_http_upstream_keepalive_srv_conf_t *conf; - - ngx_http_upstream_t *upstream; - - void *data; - - ngx_event_get_peer_pt original_get_peer; - ngx_event_free_peer_pt original_free_peer; - -#if (NGX_HTTP_SSL) - ngx_event_set_peer_session_pt original_set_session; - ngx_event_save_peer_session_pt original_save_session; -#endif - -} ngx_http_upstream_keepalive_peer_data_t; - - -static ngx_int_t ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r, - ngx_http_upstream_srv_conf_t *us); -static ngx_int_t ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc, - void *data); -static void ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, - void *data, ngx_uint_t state); - -static void ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev); -static void ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev); -static void ngx_http_upstream_keepalive_close(ngx_connection_t *c); - -#if (NGX_HTTP_SSL) -static ngx_int_t ngx_http_upstream_keepalive_set_session( - ngx_peer_connection_t *pc, void *data); -static void ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, - void *data); -#endif - -static void *ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf); -static char *ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); - - -static ngx_command_t ngx_http_upstream_keepalive_commands[] = { - - { ngx_string("keepalive"), - NGX_HTTP_UPS_CONF|NGX_CONF_TAKE1, - ngx_http_upstream_keepalive, - NGX_HTTP_SRV_CONF_OFFSET, - 0, - NULL }, - - ngx_null_command -}; - - -static ngx_http_module_t ngx_http_upstream_keepalive_module_ctx = { - NULL, /* preconfiguration */ - NULL, /* postconfiguration */ - - NULL, /* create main configuration */ - NULL, /* init main configuration */ - - ngx_http_upstream_keepalive_create_conf, /* create server configuration */ - NULL, /* merge server configuration */ - - NULL, /* create location configuration */ - NULL /* merge location configuration */ -}; - - -ngx_module_t ngx_http_upstream_keepalive_module = { - NGX_MODULE_V1, - &ngx_http_upstream_keepalive_module_ctx, /* module context */ - ngx_http_upstream_keepalive_commands, /* module directives */ - NGX_HTTP_MODULE, /* module type */ - NULL, /* init master */ - NULL, /* init module */ - NULL, /* init process */ - NULL, /* init thread */ - NULL, /* exit thread */ - NULL, /* exit process */ - NULL, /* exit master */ - NGX_MODULE_V1_PADDING -}; - - -static ngx_int_t -ngx_http_upstream_init_keepalive(ngx_conf_t *cf, - ngx_http_upstream_srv_conf_t *us) -{ - ngx_uint_t i; - ngx_http_upstream_keepalive_srv_conf_t *kcf; - ngx_http_upstream_keepalive_cache_t *cached; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, cf->log, 0, - "init keepalive"); - - kcf = ngx_http_conf_upstream_srv_conf(us, - ngx_http_upstream_keepalive_module); - - if (kcf->original_init_upstream(cf, us) != NGX_OK) { - return NGX_ERROR; - } - - kcf->original_init_peer = us->peer.init; - - us->peer.init = ngx_http_upstream_init_keepalive_peer; - - /* allocate cache items and add to free queue */ - - cached = ngx_pcalloc(cf->pool, - sizeof(ngx_http_upstream_keepalive_cache_t) * kcf->max_cached); - if (cached == NULL) { - return NGX_ERROR; - } - - ngx_queue_init(&kcf->cache); - ngx_queue_init(&kcf->free); - - for (i = 0; i < kcf->max_cached; i++) { - ngx_queue_insert_head(&kcf->free, &cached[i].queue); - cached[i].conf = kcf; - } - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_upstream_init_keepalive_peer(ngx_http_request_t *r, - ngx_http_upstream_srv_conf_t *us) -{ - ngx_http_upstream_keepalive_peer_data_t *kp; - ngx_http_upstream_keepalive_srv_conf_t *kcf; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, - "init keepalive peer"); - - kcf = ngx_http_conf_upstream_srv_conf(us, - ngx_http_upstream_keepalive_module); - - kp = ngx_palloc(r->pool, sizeof(ngx_http_upstream_keepalive_peer_data_t)); - if (kp == NULL) { - return NGX_ERROR; - } - - if (kcf->original_init_peer(r, us) != NGX_OK) { - return NGX_ERROR; - } - - kp->conf = kcf; - kp->upstream = r->upstream; - kp->data = r->upstream->peer.data; - kp->original_get_peer = r->upstream->peer.get; - kp->original_free_peer = r->upstream->peer.free; - - r->upstream->peer.data = kp; - r->upstream->peer.get = ngx_http_upstream_get_keepalive_peer; - r->upstream->peer.free = ngx_http_upstream_free_keepalive_peer; - -#if (NGX_HTTP_SSL) - kp->original_set_session = r->upstream->peer.set_session; - kp->original_save_session = r->upstream->peer.save_session; - r->upstream->peer.set_session = ngx_http_upstream_keepalive_set_session; - r->upstream->peer.save_session = ngx_http_upstream_keepalive_save_session; -#endif - - return NGX_OK; -} - - -static ngx_int_t -ngx_http_upstream_get_keepalive_peer(ngx_peer_connection_t *pc, void *data) -{ - ngx_http_upstream_keepalive_peer_data_t *kp = data; - ngx_http_upstream_keepalive_cache_t *item; - - ngx_int_t rc; - ngx_queue_t *q, *cache; - ngx_connection_t *c; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, - "get keepalive peer"); - - /* ask balancer */ - - rc = kp->original_get_peer(pc, kp->data); - - if (rc != NGX_OK) { - return rc; - } - - /* search cache for suitable connection */ - - cache = &kp->conf->cache; - - for (q = ngx_queue_head(cache); - q != ngx_queue_sentinel(cache); - q = ngx_queue_next(q)) - { - item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); - c = item->connection; - - if (ngx_memn2cmp((u_char *) &item->sockaddr, (u_char *) pc->sockaddr, - item->socklen, pc->socklen) - == 0) - { - ngx_queue_remove(q); - ngx_queue_insert_head(&kp->conf->free, q); - - goto found; - } - } - - return NGX_OK; - -found: - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, - "get keepalive peer: using connection %p", c); - - c->idle = 0; - c->sent = 0; - c->log = pc->log; - c->read->log = pc->log; - c->write->log = pc->log; - c->pool->log = pc->log; - - pc->connection = c; - pc->cached = 1; - - return NGX_DONE; -} - - -static void -ngx_http_upstream_free_keepalive_peer(ngx_peer_connection_t *pc, void *data, - ngx_uint_t state) -{ - ngx_http_upstream_keepalive_peer_data_t *kp = data; - ngx_http_upstream_keepalive_cache_t *item; - - ngx_queue_t *q; - ngx_connection_t *c; - ngx_http_upstream_t *u; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, pc->log, 0, - "free keepalive peer"); - - /* cache valid connections */ - - u = kp->upstream; - c = pc->connection; - - if (state & NGX_PEER_FAILED - || c == NULL - || c->read->eof - || c->read->error - || c->read->timedout - || c->write->error - || c->write->timedout) - { - goto invalid; - } - - if (!u->keepalive) { - goto invalid; - } - - if (!u->request_body_sent) { - goto invalid; - } - - if (ngx_terminate || ngx_exiting) { - goto invalid; - } - - if (ngx_handle_read_event(c->read, 0) != NGX_OK) { - goto invalid; - } - - ngx_log_debug1(NGX_LOG_DEBUG_HTTP, pc->log, 0, - "free keepalive peer: saving connection %p", c); - - if (ngx_queue_empty(&kp->conf->free)) { - - q = ngx_queue_last(&kp->conf->cache); - ngx_queue_remove(q); - - item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); - - ngx_http_upstream_keepalive_close(item->connection); - - } else { - q = ngx_queue_head(&kp->conf->free); - ngx_queue_remove(q); - - item = ngx_queue_data(q, ngx_http_upstream_keepalive_cache_t, queue); - } - - ngx_queue_insert_head(&kp->conf->cache, q); - - item->connection = c; - - pc->connection = NULL; - - if (c->read->timer_set) { - ngx_del_timer(c->read); - } - if (c->write->timer_set) { - ngx_del_timer(c->write); - } - - c->write->handler = ngx_http_upstream_keepalive_dummy_handler; - c->read->handler = ngx_http_upstream_keepalive_close_handler; - - c->data = item; - c->idle = 1; - c->log = ngx_cycle->log; - c->read->log = ngx_cycle->log; - c->write->log = ngx_cycle->log; - c->pool->log = ngx_cycle->log; - - item->socklen = pc->socklen; - ngx_memcpy(&item->sockaddr, pc->sockaddr, pc->socklen); - - if (c->read->ready) { - ngx_http_upstream_keepalive_close_handler(c->read); - } - -invalid: - - kp->original_free_peer(pc, kp->data, state); -} - - -static void -ngx_http_upstream_keepalive_dummy_handler(ngx_event_t *ev) -{ - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, - "keepalive dummy handler"); -} - - -static void -ngx_http_upstream_keepalive_close_handler(ngx_event_t *ev) -{ - ngx_http_upstream_keepalive_srv_conf_t *conf; - ngx_http_upstream_keepalive_cache_t *item; - - int n; - char buf[1]; - ngx_connection_t *c; - - ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, - "keepalive close handler"); - - c = ev->data; - - if (c->close) { - goto close; - } - - n = recv(c->fd, buf, 1, MSG_PEEK); - - if (n == -1 && ngx_socket_errno == NGX_EAGAIN) { - ev->ready = 0; - - if (ngx_handle_read_event(c->read, 0) != NGX_OK) { - goto close; - } - - return; - } - -close: - - item = c->data; - conf = item->conf; - - ngx_http_upstream_keepalive_close(c); - - ngx_queue_remove(&item->queue); - ngx_queue_insert_head(&conf->free, &item->queue); -} - - -static void -ngx_http_upstream_keepalive_close(ngx_connection_t *c) -{ - -#if (NGX_HTTP_SSL) - - if (c->ssl) { - c->ssl->no_wait_shutdown = 1; - c->ssl->no_send_shutdown = 1; - - if (ngx_ssl_shutdown(c) == NGX_AGAIN) { - c->ssl->handler = ngx_http_upstream_keepalive_close; - return; - } - } - -#endif - - ngx_destroy_pool(c->pool); - ngx_close_connection(c); -} - - -#if (NGX_HTTP_SSL) - -static ngx_int_t -ngx_http_upstream_keepalive_set_session(ngx_peer_connection_t *pc, void *data) -{ - ngx_http_upstream_keepalive_peer_data_t *kp = data; - - return kp->original_set_session(pc, kp->data); -} - - -static void -ngx_http_upstream_keepalive_save_session(ngx_peer_connection_t *pc, void *data) -{ - ngx_http_upstream_keepalive_peer_data_t *kp = data; - - kp->original_save_session(pc, kp->data); - return; -} - -#endif - - -static void * -ngx_http_upstream_keepalive_create_conf(ngx_conf_t *cf) -{ - ngx_http_upstream_keepalive_srv_conf_t *conf; - - conf = ngx_pcalloc(cf->pool, - sizeof(ngx_http_upstream_keepalive_srv_conf_t)); - if (conf == NULL) { - return NULL; - } - - /* - * set by ngx_pcalloc(): - * - * conf->original_init_upstream = NULL; - * conf->original_init_peer = NULL; - * conf->max_cached = 0; - */ - - return conf; -} - - -static char * -ngx_http_upstream_keepalive(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_http_upstream_srv_conf_t *uscf; - ngx_http_upstream_keepalive_srv_conf_t *kcf = conf; - - ngx_int_t n; - ngx_str_t *value; - - if (kcf->max_cached) { - return "is duplicate"; - } - - /* read options */ - - value = cf->args->elts; - - n = ngx_atoi(value[1].data, value[1].len); - - if (n == NGX_ERROR || n == 0) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid value \"%V\" in \"%V\" directive", - &value[1], &cmd->name); - return NGX_CONF_ERROR; - } - - kcf->max_cached = n; - - uscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_upstream_module); - - kcf->original_init_upstream = uscf->peer.init_upstream - ? uscf->peer.init_upstream - : ngx_http_upstream_init_round_robin; - - uscf->peer.init_upstream = ngx_http_upstream_init_keepalive; - - return NGX_CONF_OK; -} |