Mercurial > hg > nginx-quic
view src/http/v3/ngx_http_v3_module.c @ 8711:be08b858086a quic
HTTP/3: http3_hq directive and NGX_HTTP_V3_HQ macro.
Listen quic parameter is no longer supported.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Sat, 04 Dec 2021 10:52:55 +0300 |
parents | 33226ac61076 |
children | 651cc905b7c2 |
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/* * Copyright (C) Nginx, Inc. * Copyright (C) Roman Arutyunyan */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> static ngx_int_t ngx_http_v3_variable_quic(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static ngx_int_t ngx_http_v3_add_variables(ngx_conf_t *cf); static void *ngx_http_v3_create_srv_conf(ngx_conf_t *cf); static char *ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child); static char *ngx_http_quic_max_ack_delay(ngx_conf_t *cf, void *post, void *data); static char *ngx_http_quic_max_udp_payload_size(ngx_conf_t *cf, void *post, void *data); static char *ngx_http_quic_host_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static void *ngx_http_v3_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_v3_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static char *ngx_http_v3_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_conf_post_t ngx_http_quic_max_ack_delay_post = { ngx_http_quic_max_ack_delay }; static ngx_conf_post_t ngx_http_quic_max_udp_payload_size_post = { ngx_http_quic_max_udp_payload_size }; static ngx_conf_num_bounds_t ngx_http_quic_ack_delay_exponent_bounds = { ngx_conf_check_num_bounds, 0, 20 }; static ngx_conf_num_bounds_t ngx_http_quic_active_connection_id_limit_bounds = { ngx_conf_check_num_bounds, 2, -1 }; static ngx_command_t ngx_http_v3_commands[] = { { ngx_string("http3_max_table_capacity"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_table_capacity), NULL }, { ngx_string("http3_max_blocked_streams"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_blocked_streams), NULL }, { ngx_string("http3_max_concurrent_pushes"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_concurrent_pushes), NULL }, { ngx_string("http3_max_uni_streams"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, max_uni_streams), NULL }, #if (NGX_HTTP_V3_HQ) { ngx_string("http3_hq"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, hq), NULL }, #endif { ngx_string("http3_push"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, ngx_http_v3_push, NGX_HTTP_LOC_CONF_OFFSET, 0, NULL }, { ngx_string("http3_push_preload"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_v3_loc_conf_t, push_preload), NULL }, { ngx_string("quic_max_idle_timeout"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_msec_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.max_idle_timeout), NULL }, { ngx_string("quic_max_ack_delay"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_msec_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.max_ack_delay), &ngx_http_quic_max_ack_delay_post }, { ngx_string("quic_max_udp_payload_size"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.max_udp_payload_size), &ngx_http_quic_max_udp_payload_size_post }, { ngx_string("quic_initial_max_data"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.initial_max_data), NULL }, { ngx_string("quic_initial_max_stream_data_bidi_local"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.initial_max_stream_data_bidi_local), NULL }, { ngx_string("quic_initial_max_stream_data_bidi_remote"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.initial_max_stream_data_bidi_remote), NULL }, { ngx_string("quic_initial_max_stream_data_uni"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_size_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.initial_max_stream_data_uni), NULL }, { ngx_string("quic_initial_max_streams_bidi"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.initial_max_streams_bidi), NULL }, { ngx_string("quic_initial_max_streams_uni"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.initial_max_streams_uni), NULL }, { ngx_string("quic_ack_delay_exponent"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.ack_delay_exponent), &ngx_http_quic_ack_delay_exponent_bounds }, { ngx_string("quic_disable_active_migration"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.disable_active_migration), NULL }, { ngx_string("quic_active_connection_id_limit"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_conf_set_num_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.tp.active_connection_id_limit), &ngx_http_quic_active_connection_id_limit_bounds }, { ngx_string("quic_retry"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.retry), NULL }, { ngx_string("quic_gso"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG, ngx_conf_set_flag_slot, NGX_HTTP_SRV_CONF_OFFSET, offsetof(ngx_http_v3_srv_conf_t, quic.gso_enabled), NULL }, { ngx_string("quic_host_key"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1, ngx_http_quic_host_key, NGX_HTTP_SRV_CONF_OFFSET, 0, NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_v3_module_ctx = { ngx_http_v3_add_variables, /* preconfiguration */ NULL, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ ngx_http_v3_create_srv_conf, /* create server configuration */ ngx_http_v3_merge_srv_conf, /* merge server configuration */ ngx_http_v3_create_loc_conf, /* create location configuration */ ngx_http_v3_merge_loc_conf /* merge location configuration */ }; ngx_module_t ngx_http_v3_module = { NGX_MODULE_V1, &ngx_http_v3_module_ctx, /* module context */ ngx_http_v3_commands, /* module directives */ NGX_HTTP_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static ngx_http_variable_t ngx_http_v3_vars[] = { { ngx_string("quic"), NULL, ngx_http_v3_variable_quic, 0, 0, 0 }, ngx_http_null_variable }; static ngx_str_t ngx_http_quic_salt = ngx_string("ngx_quic"); static ngx_int_t ngx_http_v3_variable_quic(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { if (r->connection->quic) { v->len = 4; v->valid = 1; v->no_cacheable = 1; v->not_found = 0; v->data = (u_char *) "quic"; return NGX_OK; } v->not_found = 1; return NGX_OK; } static ngx_int_t ngx_http_v3_add_variables(ngx_conf_t *cf) { ngx_http_variable_t *var, *v; for (v = ngx_http_v3_vars; v->name.len; v++) { var = ngx_http_add_variable(cf, &v->name, v->flags); if (var == NULL) { return NGX_ERROR; } var->get_handler = v->get_handler; var->data = v->data; } return NGX_OK; } static void * ngx_http_v3_create_srv_conf(ngx_conf_t *cf) { ngx_http_v3_srv_conf_t *h3scf; h3scf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_srv_conf_t)); if (h3scf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * h3scf->quic.tp.original_dcid = { 0, NULL }; * h3scf->quic.tp.initial_scid = { 0, NULL }; * h3scf->quic.tp.retry_scid = { 0, NULL }; * h3scf->quic.tp.sr_token = { 0 } * h3scf->quic.tp.sr_enabled = 0 * h3scf->quic.tp.preferred_address = NULL * h3scf->quic.host_key = { 0, NULL } * h3scf->quic.stream_reject_code_uni = 0; */ h3scf->max_table_capacity = NGX_CONF_UNSET_SIZE; h3scf->max_blocked_streams = NGX_CONF_UNSET_UINT; h3scf->max_concurrent_pushes = NGX_CONF_UNSET_UINT; h3scf->max_uni_streams = NGX_CONF_UNSET_UINT; #if (NGX_HTTP_V3_HQ) h3scf->hq = NGX_CONF_UNSET; #endif h3scf->quic.tp.max_idle_timeout = NGX_CONF_UNSET_MSEC; h3scf->quic.tp.max_ack_delay = NGX_CONF_UNSET_MSEC; h3scf->quic.tp.max_udp_payload_size = NGX_CONF_UNSET_SIZE; h3scf->quic.tp.initial_max_data = NGX_CONF_UNSET_SIZE; h3scf->quic.tp.initial_max_stream_data_bidi_local = NGX_CONF_UNSET_SIZE; h3scf->quic.tp.initial_max_stream_data_bidi_remote = NGX_CONF_UNSET_SIZE; h3scf->quic.tp.initial_max_stream_data_uni = NGX_CONF_UNSET_SIZE; h3scf->quic.tp.initial_max_streams_bidi = NGX_CONF_UNSET_UINT; h3scf->quic.tp.initial_max_streams_uni = NGX_CONF_UNSET_UINT; h3scf->quic.tp.ack_delay_exponent = NGX_CONF_UNSET_UINT; h3scf->quic.tp.disable_active_migration = NGX_CONF_UNSET; h3scf->quic.tp.active_connection_id_limit = NGX_CONF_UNSET_UINT; h3scf->quic.retry = NGX_CONF_UNSET; h3scf->quic.gso_enabled = NGX_CONF_UNSET; h3scf->quic.stream_close_code = NGX_HTTP_V3_ERR_NO_ERROR; h3scf->quic.stream_reject_code_bidi = NGX_HTTP_V3_ERR_REQUEST_REJECTED; return h3scf; } static char * ngx_http_v3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_v3_srv_conf_t *prev = parent; ngx_http_v3_srv_conf_t *conf = child; ngx_http_ssl_srv_conf_t *sscf; ngx_conf_merge_size_value(conf->max_table_capacity, prev->max_table_capacity, 16384); ngx_conf_merge_uint_value(conf->max_blocked_streams, prev->max_blocked_streams, 16); ngx_conf_merge_uint_value(conf->max_concurrent_pushes, prev->max_concurrent_pushes, 10); ngx_conf_merge_uint_value(conf->max_uni_streams, prev->max_uni_streams, 3); #if (NGX_HTTP_V3_HQ) ngx_conf_merge_value(conf->hq, prev->hq, 0); #endif ngx_conf_merge_msec_value(conf->quic.tp.max_idle_timeout, prev->quic.tp.max_idle_timeout, 60000); ngx_conf_merge_msec_value(conf->quic.tp.max_ack_delay, prev->quic.tp.max_ack_delay, NGX_QUIC_DEFAULT_MAX_ACK_DELAY); ngx_conf_merge_size_value(conf->quic.tp.max_udp_payload_size, prev->quic.tp.max_udp_payload_size, NGX_QUIC_MAX_UDP_PAYLOAD_SIZE); ngx_conf_merge_size_value(conf->quic.tp.initial_max_data, prev->quic.tp.initial_max_data, 16 * NGX_QUIC_STREAM_BUFSIZE); ngx_conf_merge_size_value(conf->quic.tp.initial_max_stream_data_bidi_local, prev->quic.tp.initial_max_stream_data_bidi_local, NGX_QUIC_STREAM_BUFSIZE); ngx_conf_merge_size_value(conf->quic.tp.initial_max_stream_data_bidi_remote, prev->quic.tp.initial_max_stream_data_bidi_remote, NGX_QUIC_STREAM_BUFSIZE); ngx_conf_merge_size_value(conf->quic.tp.initial_max_stream_data_uni, prev->quic.tp.initial_max_stream_data_uni, NGX_QUIC_STREAM_BUFSIZE); ngx_conf_merge_uint_value(conf->quic.tp.initial_max_streams_bidi, prev->quic.tp.initial_max_streams_bidi, 16); ngx_conf_merge_uint_value(conf->quic.tp.initial_max_streams_uni, prev->quic.tp.initial_max_streams_uni, 3); ngx_conf_merge_uint_value(conf->quic.tp.ack_delay_exponent, prev->quic.tp.ack_delay_exponent, NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT); ngx_conf_merge_value(conf->quic.tp.disable_active_migration, prev->quic.tp.disable_active_migration, 0); ngx_conf_merge_uint_value(conf->quic.tp.active_connection_id_limit, prev->quic.tp.active_connection_id_limit, 2); ngx_conf_merge_value(conf->quic.retry, prev->quic.retry, 0); ngx_conf_merge_value(conf->quic.gso_enabled, prev->quic.gso_enabled, 0); ngx_conf_merge_str_value(conf->quic.host_key, prev->quic.host_key, ""); if (conf->quic.host_key.len == 0) { conf->quic.host_key.len = NGX_QUIC_DEFAULT_HOST_KEY_LEN; conf->quic.host_key.data = ngx_palloc(cf->pool, conf->quic.host_key.len); if (conf->quic.host_key.data == NULL) { return NGX_CONF_ERROR; } if (RAND_bytes(conf->quic.host_key.data, NGX_QUIC_DEFAULT_HOST_KEY_LEN) <= 0) { return NGX_CONF_ERROR; } } if (ngx_quic_derive_key(cf->log, "av_token_key", &conf->quic.host_key, &ngx_http_quic_salt, conf->quic.av_token_key, NGX_QUIC_AV_KEY_LEN) != NGX_OK) { return NGX_CONF_ERROR; } if (ngx_quic_derive_key(cf->log, "sr_token_key", &conf->quic.host_key, &ngx_http_quic_salt, conf->quic.sr_token_key, NGX_QUIC_SR_KEY_LEN) != NGX_OK) { return NGX_CONF_ERROR; } sscf = ngx_http_conf_get_module_srv_conf(cf, ngx_http_ssl_module); conf->quic.ssl = &sscf->ssl; return NGX_CONF_OK; } static char * ngx_http_quic_max_ack_delay(ngx_conf_t *cf, void *post, void *data) { ngx_msec_t *sp = data; if (*sp >= 16384) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"quic_max_ack_delay\" must be less than 16384"); return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_http_quic_max_udp_payload_size(ngx_conf_t *cf, void *post, void *data) { size_t *sp = data; if (*sp < NGX_QUIC_MIN_INITIAL_SIZE || *sp > NGX_QUIC_MAX_UDP_PAYLOAD_SIZE) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"quic_max_udp_payload_size\" must be between " "%d and %d", NGX_QUIC_MIN_INITIAL_SIZE, NGX_QUIC_MAX_UDP_PAYLOAD_SIZE); return NGX_CONF_ERROR; } return NGX_CONF_OK; } static char * ngx_http_quic_host_key(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_v3_srv_conf_t *h3scf = conf; u_char *buf; size_t size; ssize_t n; ngx_str_t *value; ngx_file_t file; ngx_file_info_t fi; ngx_quic_conf_t *qcf; qcf = &h3scf->quic; if (qcf->host_key.len) { return "is duplicate"; } buf = NULL; #if (NGX_SUPPRESS_WARN) size = 0; #endif value = cf->args->elts; if (ngx_conf_full_name(cf->cycle, &value[1], 1) != NGX_OK) { return NGX_CONF_ERROR; } ngx_memzero(&file, sizeof(ngx_file_t)); file.name = value[1]; file.log = cf->log; file.fd = ngx_open_file(file.name.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); if (file.fd == NGX_INVALID_FILE) { ngx_conf_log_error(NGX_LOG_EMERG, cf, ngx_errno, ngx_open_file_n " \"%V\" failed", &file.name); return NGX_CONF_ERROR; } if (ngx_fd_info(file.fd, &fi) == NGX_FILE_ERROR) { ngx_conf_log_error(NGX_LOG_CRIT, cf, ngx_errno, ngx_fd_info_n " \"%V\" failed", &file.name); goto failed; } size = ngx_file_size(&fi); if (size == 0) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "\"%V\" zero key size", &file.name); goto failed; } buf = ngx_pnalloc(cf->pool, size); if (buf == NULL) { goto failed; } n = ngx_read_file(&file, buf, size, 0); if (n == NGX_ERROR) { ngx_conf_log_error(NGX_LOG_CRIT, cf, ngx_errno, ngx_read_file_n " \"%V\" failed", &file.name); goto failed; } if ((size_t) n != size) { ngx_conf_log_error(NGX_LOG_CRIT, cf, 0, ngx_read_file_n " \"%V\" returned only " "%z bytes instead of %uz", &file.name, n, size); goto failed; } qcf->host_key.data = buf; qcf->host_key.len = n; if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, ngx_close_file_n " \"%V\" failed", &file.name); } return NGX_CONF_OK; failed: if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, ngx_close_file_n " \"%V\" failed", &file.name); } if (buf) { ngx_explicit_memzero(buf, size); } return NGX_CONF_ERROR; } static void * ngx_http_v3_create_loc_conf(ngx_conf_t *cf) { ngx_http_v3_loc_conf_t *h3lcf; h3lcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_v3_loc_conf_t)); if (h3lcf == NULL) { return NULL; } /* * set by ngx_pcalloc(): * * h3lcf->pushes = NULL; */ h3lcf->push_preload = NGX_CONF_UNSET; h3lcf->push = NGX_CONF_UNSET; return h3lcf; } static char * ngx_http_v3_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_v3_loc_conf_t *prev = parent; ngx_http_v3_loc_conf_t *conf = child; ngx_conf_merge_value(conf->push, prev->push, 1); if (conf->push && conf->pushes == NULL) { conf->pushes = prev->pushes; } ngx_conf_merge_value(conf->push_preload, prev->push_preload, 0); return NGX_CONF_OK; } static char * ngx_http_v3_push(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_v3_loc_conf_t *h3lcf = conf; ngx_str_t *value; ngx_http_complex_value_t *cv; ngx_http_compile_complex_value_t ccv; value = cf->args->elts; if (ngx_strcmp(value[1].data, "off") == 0) { if (h3lcf->pushes) { return "\"off\" parameter cannot be used with URI"; } if (h3lcf->push == 0) { return "is duplicate"; } h3lcf->push = 0; return NGX_CONF_OK; } if (h3lcf->push == 0) { return "URI cannot be used with \"off\" parameter"; } h3lcf->push = 1; if (h3lcf->pushes == NULL) { h3lcf->pushes = ngx_array_create(cf->pool, 1, sizeof(ngx_http_complex_value_t)); if (h3lcf->pushes == NULL) { return NGX_CONF_ERROR; } } cv = ngx_array_push(h3lcf->pushes); if (cv == NULL) { return NGX_CONF_ERROR; } ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = cv; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; }