nginx: src/stream/ngx_stream_limit_conn

annotate src/stream/ngx_stream_limit_conn_module.c @ 7595:9606d93aa586

Limit conn: $limit_conn_status variable. The variable takes one of the values: PASSED, REJECTED or REJECTED_DRY_RUN.

author	Roman Arutyunyan <arut@nginx.com>
date	Mon, 18 Nov 2019 17:48:32 +0300
parents	359b0ea2b067
children	b45f052483b8

rev	line source
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	1
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	2 /*
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	3 * Copyright (C) Igor Sysoev
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	4 * Copyright (C) Nginx, Inc.
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	5 */
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	6
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	7
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	8 #include <ngx_config.h>
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	9 #include <ngx_core.h>
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	10 #include <ngx_stream.h>
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	11
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	12
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	13 #define NGX_STREAM_LIMIT_CONN_PASSED 1
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	14 #define NGX_STREAM_LIMIT_CONN_REJECTED 2
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	15 #define NGX_STREAM_LIMIT_CONN_REJECTED_DRY_RUN 3
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	16
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	17
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	18 typedef struct {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	19 u_char color;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	20 u_char len;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	21 u_short conn;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	22 u_char data[1];
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	23 } ngx_stream_limit_conn_node_t;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	24
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	25
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	26 typedef struct {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	27 ngx_shm_zone_t *shm_zone;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	28 ngx_rbtree_node_t *node;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	29 } ngx_stream_limit_conn_cleanup_t;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	30
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	31
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	32 typedef struct {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	33 ngx_rbtree_t *rbtree;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	34 ngx_stream_complex_value_t key;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	35 } ngx_stream_limit_conn_ctx_t;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	36
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	37
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	38 typedef struct {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	39 ngx_shm_zone_t *shm_zone;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	40 ngx_uint_t conn;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	41 } ngx_stream_limit_conn_limit_t;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	42
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	43
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	44 typedef struct {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	45 ngx_array_t limits;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	46 ngx_uint_t log_level;
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	47 ngx_flag_t dry_run;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	48 } ngx_stream_limit_conn_conf_t;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	49
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	50
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	51 static ngx_rbtree_node_t ngx_stream_limit_conn_lookup(ngx_rbtree_t rbtree,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	52 ngx_str_t *key, uint32_t hash);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	53 static void ngx_stream_limit_conn_cleanup(void *data);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	54 static ngx_inline void ngx_stream_limit_conn_cleanup_all(ngx_pool_t *pool);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	55
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	56 static ngx_int_t ngx_stream_limit_conn_status_variable(ngx_stream_session_t *s,
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	57 ngx_stream_variable_value_t *v, uintptr_t data);
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	58 static void ngx_stream_limit_conn_create_conf(ngx_conf_t cf);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	59 static char ngx_stream_limit_conn_merge_conf(ngx_conf_t cf, void *parent,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	60 void *child);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	61 static char ngx_stream_limit_conn_zone(ngx_conf_t cf, ngx_command_t *cmd,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	62 void *conf);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	63 static char ngx_stream_limit_conn(ngx_conf_t cf, ngx_command_t *cmd,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	64 void *conf);
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	65 static ngx_int_t ngx_stream_limit_conn_add_variables(ngx_conf_t *cf);
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	66 static ngx_int_t ngx_stream_limit_conn_init(ngx_conf_t *cf);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	67
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	68
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	69 static ngx_conf_enum_t ngx_stream_limit_conn_log_levels[] = {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	70 { ngx_string("info"), NGX_LOG_INFO },
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	71 { ngx_string("notice"), NGX_LOG_NOTICE },
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	72 { ngx_string("warn"), NGX_LOG_WARN },
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	73 { ngx_string("error"), NGX_LOG_ERR },
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	74 { ngx_null_string, 0 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	75 };
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	76
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	77
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	78 static ngx_command_t ngx_stream_limit_conn_commands[] = {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	79
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	80 { ngx_string("limit_conn_zone"),
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	81 NGX_STREAM_MAIN_CONF\|NGX_CONF_TAKE2,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	82 ngx_stream_limit_conn_zone,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	83 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	84 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	85 NULL },
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	86
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	87 { ngx_string("limit_conn"),
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	88 NGX_STREAM_MAIN_CONF\|NGX_STREAM_SRV_CONF\|NGX_CONF_TAKE2,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	89 ngx_stream_limit_conn,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	90 NGX_STREAM_SRV_CONF_OFFSET,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	91 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	92 NULL },
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	93
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	94 { ngx_string("limit_conn_log_level"),
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	95 NGX_STREAM_MAIN_CONF\|NGX_STREAM_SRV_CONF\|NGX_CONF_TAKE1,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	96 ngx_conf_set_enum_slot,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	97 NGX_STREAM_SRV_CONF_OFFSET,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	98 offsetof(ngx_stream_limit_conn_conf_t, log_level),
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	99 &ngx_stream_limit_conn_log_levels },
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	100
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	101 { ngx_string("limit_conn_dry_run"),
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	102 NGX_STREAM_MAIN_CONF\|NGX_STREAM_SRV_CONF\|NGX_CONF_FLAG,
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	103 ngx_conf_set_flag_slot,
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	104 NGX_STREAM_SRV_CONF_OFFSET,
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	105 offsetof(ngx_stream_limit_conn_conf_t, dry_run),
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	106 NULL },
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	107
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	108 ngx_null_command
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	109 };
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	110
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	111
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	112 static ngx_stream_module_t ngx_stream_limit_conn_module_ctx = {
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	113 ngx_stream_limit_conn_add_variables, /* preconfiguration */
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	114 ngx_stream_limit_conn_init, /* postconfiguration */
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	115
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	116 NULL, /* create main configuration */
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	117 NULL, /* init main configuration */
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	118
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	119 ngx_stream_limit_conn_create_conf, /* create server configuration */
6629 8ed51b02f655 Stream: style. Vladimir Homutov <vl@nginx.com> parents: 6610 diff changeset	120 ngx_stream_limit_conn_merge_conf /* merge server configuration */
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	121 };
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	122
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	123
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	124 ngx_module_t ngx_stream_limit_conn_module = {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	125 NGX_MODULE_V1,
6601 d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	126 &ngx_stream_limit_conn_module_ctx, /* module context */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	127 ngx_stream_limit_conn_commands, /* module directives */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	128 NGX_STREAM_MODULE, /* module type */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	129 NULL, /* init master */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	130 NULL, /* init module */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	131 NULL, /* init process */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	132 NULL, /* init thread */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	133 NULL, /* exit thread */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	134 NULL, /* exit process */
d452cb27639f Style. Roman Arutyunyan <arut@nginx.com> parents: 6480 diff changeset	135 NULL, /* exit master */
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	136 NGX_MODULE_V1_PADDING
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	137 };
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	138
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	139
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	140 static ngx_stream_variable_t ngx_stream_limit_conn_vars[] = {
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	141
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	142 { ngx_string("limit_conn_status"), NULL,
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	143 ngx_stream_limit_conn_status_variable, 0, NGX_STREAM_VAR_NOCACHEABLE, 0 },
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	144
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	145 ngx_stream_null_variable
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	146 };
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	147
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	148
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	149 static ngx_str_t ngx_stream_limit_conn_status[] = {
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	150 ngx_string("PASSED"),
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	151 ngx_string("REJECTED"),
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	152 ngx_string("REJECTED_DRY_RUN")
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	153 };
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	154
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	155
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	156 static ngx_int_t
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	157 ngx_stream_limit_conn_handler(ngx_stream_session_t *s)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	158 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	159 size_t n;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	160 uint32_t hash;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	161 ngx_str_t key;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	162 ngx_uint_t i;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	163 ngx_slab_pool_t *shpool;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	164 ngx_rbtree_node_t *node;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	165 ngx_pool_cleanup_t *cln;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	166 ngx_stream_limit_conn_ctx_t *ctx;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	167 ngx_stream_limit_conn_node_t *lc;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	168 ngx_stream_limit_conn_conf_t *lccf;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	169 ngx_stream_limit_conn_limit_t *limits;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	170 ngx_stream_limit_conn_cleanup_t *lccln;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	171
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	172 lccf = ngx_stream_get_module_srv_conf(s, ngx_stream_limit_conn_module);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	173 limits = lccf->limits.elts;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	174
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	175 for (i = 0; i < lccf->limits.nelts; i++) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	176 ctx = limits[i].shm_zone->data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	177
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	178 if (ngx_stream_complex_value(s, &ctx->key, &key) != NGX_OK) {
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	179 return NGX_ERROR;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	180 }
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	181
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	182 if (key.len == 0) {
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	183 continue;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	184 }
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	185
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	186 if (key.len > 255) {
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	187 ngx_log_error(NGX_LOG_ERR, s->connection->log, 0,
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	188 "the value of the \"%V\" key "
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	189 "is more than 255 bytes: \"%V\"",
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	190 &ctx->key.value, &key);
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	191 continue;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	192 }
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	193
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	194 s->limit_conn_status = NGX_STREAM_LIMIT_CONN_PASSED;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	195
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	196 hash = ngx_crc32_short(key.data, key.len);
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	197
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	198 shpool = (ngx_slab_pool_t *) limits[i].shm_zone->shm.addr;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	199
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	200 ngx_shmtx_lock(&shpool->mutex);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	201
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	202 node = ngx_stream_limit_conn_lookup(ctx->rbtree, &key, hash);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	203
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	204 if (node == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	205
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	206 n = offsetof(ngx_rbtree_node_t, color)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	207 + offsetof(ngx_stream_limit_conn_node_t, data)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	208 + key.len;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	209
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	210 node = ngx_slab_alloc_locked(shpool, n);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	211
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	212 if (node == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	213 ngx_shmtx_unlock(&shpool->mutex);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	214 ngx_stream_limit_conn_cleanup_all(s->connection->pool);
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	215
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	216 if (lccf->dry_run) {
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	217 s->limit_conn_status =
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	218 NGX_STREAM_LIMIT_CONN_REJECTED_DRY_RUN;
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	219 return NGX_DECLINED;
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	220 }
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	221
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	222 s->limit_conn_status = NGX_STREAM_LIMIT_CONN_REJECTED;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	223
6693 3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	224 return NGX_STREAM_SERVICE_UNAVAILABLE;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	225 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	226
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	227 lc = (ngx_stream_limit_conn_node_t *) &node->color;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	228
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	229 node->key = hash;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	230 lc->len = (u_char) key.len;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	231 lc->conn = 1;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	232 ngx_memcpy(lc->data, key.data, key.len);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	233
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	234 ngx_rbtree_insert(ctx->rbtree, node);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	235
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	236 } else {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	237
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	238 lc = (ngx_stream_limit_conn_node_t *) &node->color;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	239
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	240 if ((ngx_uint_t) lc->conn >= limits[i].conn) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	241
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	242 ngx_shmtx_unlock(&shpool->mutex);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	243
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	244 ngx_log_error(lccf->log_level, s->connection->log, 0,
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	245 "limiting connections%s by zone \"%V\"",
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	246 lccf->dry_run ? ", dry run," : "",
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	247 &limits[i].shm_zone->shm.name);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	248
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	249 ngx_stream_limit_conn_cleanup_all(s->connection->pool);
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	250
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	251 if (lccf->dry_run) {
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	252 s->limit_conn_status =
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	253 NGX_STREAM_LIMIT_CONN_REJECTED_DRY_RUN;
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	254 return NGX_DECLINED;
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	255 }
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	256
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	257 s->limit_conn_status = NGX_STREAM_LIMIT_CONN_REJECTED;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	258
6693 3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	259 return NGX_STREAM_SERVICE_UNAVAILABLE;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	260 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	261
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	262 lc->conn++;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	263 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	264
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	265 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, s->connection->log, 0,
6480 f01ab2dbcfdc Fixed logging. Sergey Kandaurov <pluknet@nginx.com> parents: 6197 diff changeset	266 "limit conn: %08Xi %d", node->key, lc->conn);
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	267
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	268 ngx_shmtx_unlock(&shpool->mutex);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	269
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	270 cln = ngx_pool_cleanup_add(s->connection->pool,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	271 sizeof(ngx_stream_limit_conn_cleanup_t));
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	272 if (cln == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	273 return NGX_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	274 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	275
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	276 cln->handler = ngx_stream_limit_conn_cleanup;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	277 lccln = cln->data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	278
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	279 lccln->shm_zone = limits[i].shm_zone;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	280 lccln->node = node;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	281 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	282
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	283 return NGX_DECLINED;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	284 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	285
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	286
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	287 static void
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	288 ngx_stream_limit_conn_rbtree_insert_value(ngx_rbtree_node_t *temp,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	289 ngx_rbtree_node_t node, ngx_rbtree_node_t sentinel)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	290 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	291 ngx_rbtree_node_t **p;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	292 ngx_stream_limit_conn_node_t lcn, lcnt;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	293
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	294 for ( ;; ) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	295
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	296 if (node->key < temp->key) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	297
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	298 p = &temp->left;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	299
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	300 } else if (node->key > temp->key) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	301
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	302 p = &temp->right;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	303
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	304 } else { /* node->key == temp->key */
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	305
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	306 lcn = (ngx_stream_limit_conn_node_t *) &node->color;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	307 lcnt = (ngx_stream_limit_conn_node_t *) &temp->color;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	308
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	309 p = (ngx_memn2cmp(lcn->data, lcnt->data, lcn->len, lcnt->len) < 0)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	310 ? &temp->left : &temp->right;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	311 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	312
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	313 if (*p == sentinel) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	314 break;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	315 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	316
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	317 temp = *p;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	318 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	319
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	320 *p = node;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	321 node->parent = temp;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	322 node->left = sentinel;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	323 node->right = sentinel;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	324 ngx_rbt_red(node);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	325 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	326
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	327
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	328 static ngx_rbtree_node_t *
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	329 ngx_stream_limit_conn_lookup(ngx_rbtree_t rbtree, ngx_str_t key,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	330 uint32_t hash)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	331 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	332 ngx_int_t rc;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	333 ngx_rbtree_node_t node, sentinel;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	334 ngx_stream_limit_conn_node_t *lcn;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	335
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	336 node = rbtree->root;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	337 sentinel = rbtree->sentinel;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	338
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	339 while (node != sentinel) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	340
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	341 if (hash < node->key) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	342 node = node->left;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	343 continue;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	344 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	345
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	346 if (hash > node->key) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	347 node = node->right;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	348 continue;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	349 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	350
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	351 /* hash == node->key */
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	352
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	353 lcn = (ngx_stream_limit_conn_node_t *) &node->color;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	354
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	355 rc = ngx_memn2cmp(key->data, lcn->data, key->len, (size_t) lcn->len);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	356
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	357 if (rc == 0) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	358 return node;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	359 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	360
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	361 node = (rc < 0) ? node->left : node->right;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	362 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	363
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	364 return NULL;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	365 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	366
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	367
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	368 static void
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	369 ngx_stream_limit_conn_cleanup(void *data)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	370 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	371 ngx_stream_limit_conn_cleanup_t *lccln = data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	372
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	373 ngx_slab_pool_t *shpool;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	374 ngx_rbtree_node_t *node;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	375 ngx_stream_limit_conn_ctx_t *ctx;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	376 ngx_stream_limit_conn_node_t *lc;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	377
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	378 ctx = lccln->shm_zone->data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	379 shpool = (ngx_slab_pool_t *) lccln->shm_zone->shm.addr;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	380 node = lccln->node;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	381 lc = (ngx_stream_limit_conn_node_t *) &node->color;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	382
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	383 ngx_shmtx_lock(&shpool->mutex);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	384
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	385 ngx_log_debug2(NGX_LOG_DEBUG_STREAM, lccln->shm_zone->shm.log, 0,
6480 f01ab2dbcfdc Fixed logging. Sergey Kandaurov <pluknet@nginx.com> parents: 6197 diff changeset	386 "limit conn cleanup: %08Xi %d", node->key, lc->conn);
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	387
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	388 lc->conn--;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	389
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	390 if (lc->conn == 0) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	391 ngx_rbtree_delete(ctx->rbtree, node);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	392 ngx_slab_free_locked(shpool, node);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	393 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	394
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	395 ngx_shmtx_unlock(&shpool->mutex);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	396 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	397
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	398
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	399 static ngx_inline void
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	400 ngx_stream_limit_conn_cleanup_all(ngx_pool_t *pool)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	401 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	402 ngx_pool_cleanup_t *cln;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	403
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	404 cln = pool->cleanup;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	405
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	406 while (cln && cln->handler == ngx_stream_limit_conn_cleanup) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	407 ngx_stream_limit_conn_cleanup(cln->data);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	408 cln = cln->next;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	409 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	410
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	411 pool->cleanup = cln;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	412 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	413
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	414
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	415 static ngx_int_t
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	416 ngx_stream_limit_conn_init_zone(ngx_shm_zone_t shm_zone, void data)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	417 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	418 ngx_stream_limit_conn_ctx_t *octx = data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	419
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	420 size_t len;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	421 ngx_slab_pool_t *shpool;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	422 ngx_rbtree_node_t *sentinel;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	423 ngx_stream_limit_conn_ctx_t *ctx;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	424
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	425 ctx = shm_zone->data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	426
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	427 if (octx) {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	428 if (ctx->key.value.len != octx->key.value.len
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	429 \|\| ngx_strncmp(ctx->key.value.data, octx->key.value.data,
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	430 ctx->key.value.len)
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	431 != 0)
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	432 {
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	433 ngx_log_error(NGX_LOG_EMERG, shm_zone->shm.log, 0,
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	434 "limit_conn_zone \"%V\" uses the \"%V\" key "
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	435 "while previously it used the \"%V\" key",
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	436 &shm_zone->shm.name, &ctx->key.value,
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	437 &octx->key.value);
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	438 return NGX_ERROR;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	439 }
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	440
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	441 ctx->rbtree = octx->rbtree;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	442
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	443 return NGX_OK;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	444 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	445
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	446 shpool = (ngx_slab_pool_t *) shm_zone->shm.addr;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	447
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	448 if (shm_zone->shm.exists) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	449 ctx->rbtree = shpool->data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	450
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	451 return NGX_OK;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	452 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	453
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	454 ctx->rbtree = ngx_slab_alloc(shpool, sizeof(ngx_rbtree_t));
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	455 if (ctx->rbtree == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	456 return NGX_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	457 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	458
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	459 shpool->data = ctx->rbtree;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	460
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	461 sentinel = ngx_slab_alloc(shpool, sizeof(ngx_rbtree_node_t));
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	462 if (sentinel == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	463 return NGX_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	464 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	465
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	466 ngx_rbtree_init(ctx->rbtree, sentinel,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	467 ngx_stream_limit_conn_rbtree_insert_value);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	468
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	469 len = sizeof(" in limit_conn_zone \"\"") + shm_zone->shm.name.len;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	470
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	471 shpool->log_ctx = ngx_slab_alloc(shpool, len);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	472 if (shpool->log_ctx == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	473 return NGX_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	474 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	475
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	476 ngx_sprintf(shpool->log_ctx, " in limit_conn_zone \"%V\"%Z",
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	477 &shm_zone->shm.name);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	478
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	479 return NGX_OK;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	480 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	481
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	482
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	483 static ngx_int_t
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	484 ngx_stream_limit_conn_status_variable(ngx_stream_session_t *s,
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	485 ngx_stream_variable_value_t *v, uintptr_t data)
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	486 {
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	487 if (s->limit_conn_status == 0) {
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	488 v->not_found = 1;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	489 return NGX_OK;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	490 }
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	491
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	492 v->valid = 1;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	493 v->no_cacheable = 0;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	494 v->not_found = 0;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	495 v->len = ngx_stream_limit_conn_status[s->limit_conn_status - 1].len;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	496 v->data = ngx_stream_limit_conn_status[s->limit_conn_status - 1].data;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	497
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	498 return NGX_OK;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	499 }
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	500
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	501
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	502 static void *
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	503 ngx_stream_limit_conn_create_conf(ngx_conf_t *cf)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	504 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	505 ngx_stream_limit_conn_conf_t *conf;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	506
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	507 conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_limit_conn_conf_t));
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	508 if (conf == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	509 return NULL;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	510 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	511
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	512 /*
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	513 * set by ngx_pcalloc():
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	514 *
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	515 * conf->limits.elts = NULL;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	516 */
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	517
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	518 conf->log_level = NGX_CONF_UNSET_UINT;
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	519 conf->dry_run = NGX_CONF_UNSET;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	520
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	521 return conf;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	522 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	523
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	524
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	525 static char *
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	526 ngx_stream_limit_conn_merge_conf(ngx_conf_t cf, void parent, void *child)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	527 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	528 ngx_stream_limit_conn_conf_t *prev = parent;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	529 ngx_stream_limit_conn_conf_t *conf = child;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	530
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	531 if (conf->limits.elts == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	532 conf->limits = prev->limits;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	533 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	534
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	535 ngx_conf_merge_uint_value(conf->log_level, prev->log_level, NGX_LOG_ERR);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	536
7594 359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	537 ngx_conf_merge_value(conf->dry_run, prev->dry_run, 0);
359b0ea2b067 Limit conn: limit_conn_dry_run directive. Roman Arutyunyan <arut@nginx.com> parents: 6693 diff changeset	538
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	539 return NGX_CONF_OK;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	540 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	541
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	542
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	543 static char *
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	544 ngx_stream_limit_conn_zone(ngx_conf_t cf, ngx_command_t cmd, void *conf)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	545 {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	546 u_char *p;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	547 ssize_t size;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	548 ngx_str_t *value, name, s;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	549 ngx_uint_t i;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	550 ngx_shm_zone_t *shm_zone;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	551 ngx_stream_limit_conn_ctx_t *ctx;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	552 ngx_stream_compile_complex_value_t ccv;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	553
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	554 value = cf->args->elts;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	555
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	556 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_stream_limit_conn_ctx_t));
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	557 if (ctx == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	558 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	559 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	560
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	561 ngx_memzero(&ccv, sizeof(ngx_stream_compile_complex_value_t));
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	562
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	563 ccv.cf = cf;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	564 ccv.value = &value[1];
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	565 ccv.complex_value = &ctx->key;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	566
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	567 if (ngx_stream_compile_complex_value(&ccv) != NGX_OK) {
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	568 return NGX_CONF_ERROR;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	569 }
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	570
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	571 size = 0;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	572 name.len = 0;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	573
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	574 for (i = 2; i < cf->args->nelts; i++) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	575
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	576 if (ngx_strncmp(value[i].data, "zone=", 5) == 0) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	577
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	578 name.data = value[i].data + 5;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	579
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	580 p = (u_char *) ngx_strchr(name.data, ':');
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	581
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	582 if (p == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	583 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	584 "invalid zone size \"%V\"", &value[i]);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	585 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	586 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	587
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	588 name.len = p - name.data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	589
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	590 s.data = p + 1;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	591 s.len = value[i].data + value[i].len - s.data;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	592
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	593 size = ngx_parse_size(&s);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	594
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	595 if (size == NGX_ERROR) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	596 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	597 "invalid zone size \"%V\"", &value[i]);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	598 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	599 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	600
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	601 if (size < (ssize_t) (8 * ngx_pagesize)) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	602 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	603 "zone \"%V\" is too small", &value[i]);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	604 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	605 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	606
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	607 continue;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	608 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	609
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	610 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	611 "invalid parameter \"%V\"", &value[i]);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	612 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	613 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	614
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	615 if (name.len == 0) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	616 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	617 "\"%V\" must have \"zone\" parameter",
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	618 &cmd->name);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	619 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	620 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	621
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	622 shm_zone = ngx_shared_memory_add(cf, &name, size,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	623 &ngx_stream_limit_conn_module);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	624 if (shm_zone == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	625 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	626 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	627
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	628 if (shm_zone->data) {
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	629 ctx = shm_zone->data;
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	630
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	631 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
6610 d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	632 "%V \"%V\" is already bound to key \"%V\"",
d5b5866c06c4 Stream: got rid of pseudo variables. Vladimir Homutov <vl@nginx.com> parents: 6606 diff changeset	633 &cmd->name, &name, &ctx->key.value);
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	634 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	635 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	636
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	637 shm_zone->init = ngx_stream_limit_conn_init_zone;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	638 shm_zone->data = ctx;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	639
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	640 return NGX_CONF_OK;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	641 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	642
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	643
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	644 static char *
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	645 ngx_stream_limit_conn(ngx_conf_t cf, ngx_command_t cmd, void *conf)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	646 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	647 ngx_shm_zone_t *shm_zone;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	648 ngx_stream_limit_conn_conf_t *lccf = conf;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	649 ngx_stream_limit_conn_limit_t limit, limits;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	650
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	651 ngx_str_t *value;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	652 ngx_int_t n;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	653 ngx_uint_t i;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	654
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	655 value = cf->args->elts;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	656
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	657 shm_zone = ngx_shared_memory_add(cf, &value[1], 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	658 &ngx_stream_limit_conn_module);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	659 if (shm_zone == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	660 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	661 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	662
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	663 limits = lccf->limits.elts;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	664
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	665 if (limits == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	666 if (ngx_array_init(&lccf->limits, cf->pool, 1,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	667 sizeof(ngx_stream_limit_conn_limit_t))
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	668 != NGX_OK)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	669 {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	670 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	671 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	672 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	673
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	674 for (i = 0; i < lccf->limits.nelts; i++) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	675 if (shm_zone == limits[i].shm_zone) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	676 return "is duplicate";
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	677 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	678 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	679
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	680 n = ngx_atoi(value[2].data, value[2].len);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	681 if (n <= 0) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	682 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	683 "invalid number of connections \"%V\"", &value[2]);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	684 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	685 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	686
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	687 if (n > 65535) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	688 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	689 "connection limit must be less 65536");
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	690 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	691 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	692
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	693 limit = ngx_array_push(&lccf->limits);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	694 if (limit == NULL) {
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	695 return NGX_CONF_ERROR;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	696 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	697
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	698 limit->conn = n;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	699 limit->shm_zone = shm_zone;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	700
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	701 return NGX_CONF_OK;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	702 }
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	703
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	704
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	705 static ngx_int_t
7595 9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	706 ngx_stream_limit_conn_add_variables(ngx_conf_t *cf)
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	707 {
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	708 ngx_stream_variable_t var, v;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	709
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	710 for (v = ngx_stream_limit_conn_vars; v->name.len; v++) {
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	711 var = ngx_stream_add_variable(cf, &v->name, v->flags);
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	712 if (var == NULL) {
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	713 return NGX_ERROR;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	714 }
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	715
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	716 var->get_handler = v->get_handler;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	717 var->data = v->data;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	718 }
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	719
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	720 return NGX_OK;
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	721 }
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	722
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	723
9606d93aa586 Limit conn: $limit_conn_status variable. Roman Arutyunyan <arut@nginx.com> parents: 7594 diff changeset	724 static ngx_int_t
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	725 ngx_stream_limit_conn_init(ngx_conf_t *cf)
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	726 {
6693 3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	727 ngx_stream_handler_pt *h;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	728 ngx_stream_core_main_conf_t *cmcf;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	729
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	730 cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module);
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	731
6693 3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	732 h = ngx_array_push(&cmcf->phases[NGX_STREAM_PREACCESS_PHASE].handlers);
3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	733 if (h == NULL) {
3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	734 return NGX_ERROR;
3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	735 }
3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	736
3908156a51fa Stream: phases. Roman Arutyunyan <arut@nginx.com> parents: 6629 diff changeset	737 *h = ngx_stream_limit_conn_handler;
6197 0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	738
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	739 return NGX_OK;
0dcef374b8bb Stream: connection limiting module. Vladimir Homutov <vl@nginx.com> parents: diff changeset	740 }

Mercurial > hg > nginx

annotate src/stream/ngx_stream_limit_conn_module.c @ 7595:9606d93aa586