Drop nginx
[tldk.git] / app / nginx / src / http / ngx_http.c
diff --git a/app/nginx/src/http/ngx_http.c b/app/nginx/src/http/ngx_http.c
deleted file mode 100644 (file)
index c036389..0000000
+++ /dev/null
@@ -1,2081 +0,0 @@
-
-/*
- * Copyright (C) Igor Sysoev
- * Copyright (C) Nginx, Inc.
- */
-
-
-#include <ngx_config.h>
-#include <ngx_core.h>
-#include <ngx_http.h>
-
-
-static char *ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
-static ngx_int_t ngx_http_init_phases(ngx_conf_t *cf,
-    ngx_http_core_main_conf_t *cmcf);
-static ngx_int_t ngx_http_init_headers_in_hash(ngx_conf_t *cf,
-    ngx_http_core_main_conf_t *cmcf);
-static ngx_int_t ngx_http_init_phase_handlers(ngx_conf_t *cf,
-    ngx_http_core_main_conf_t *cmcf);
-
-static ngx_int_t ngx_http_add_addresses(ngx_conf_t *cf,
-    ngx_http_core_srv_conf_t *cscf, ngx_http_conf_port_t *port,
-    ngx_http_listen_opt_t *lsopt);
-static ngx_int_t ngx_http_add_address(ngx_conf_t *cf,
-    ngx_http_core_srv_conf_t *cscf, ngx_http_conf_port_t *port,
-    ngx_http_listen_opt_t *lsopt);
-static ngx_int_t ngx_http_add_server(ngx_conf_t *cf,
-    ngx_http_core_srv_conf_t *cscf, ngx_http_conf_addr_t *addr);
-
-static char *ngx_http_merge_servers(ngx_conf_t *cf,
-    ngx_http_core_main_conf_t *cmcf, ngx_http_module_t *module,
-    ngx_uint_t ctx_index);
-static char *ngx_http_merge_locations(ngx_conf_t *cf,
-    ngx_queue_t *locations, void **loc_conf, ngx_http_module_t *module,
-    ngx_uint_t ctx_index);
-static ngx_int_t ngx_http_init_locations(ngx_conf_t *cf,
-    ngx_http_core_srv_conf_t *cscf, ngx_http_core_loc_conf_t *pclcf);
-static ngx_int_t ngx_http_init_static_location_trees(ngx_conf_t *cf,
-    ngx_http_core_loc_conf_t *pclcf);
-static ngx_int_t ngx_http_cmp_locations(const ngx_queue_t *one,
-    const ngx_queue_t *two);
-static ngx_int_t ngx_http_join_exact_locations(ngx_conf_t *cf,
-    ngx_queue_t *locations);
-static void ngx_http_create_locations_list(ngx_queue_t *locations,
-    ngx_queue_t *q);
-static ngx_http_location_tree_node_t *
-    ngx_http_create_locations_tree(ngx_conf_t *cf, ngx_queue_t *locations,
-    size_t prefix);
-
-static ngx_int_t ngx_http_optimize_servers(ngx_conf_t *cf,
-    ngx_http_core_main_conf_t *cmcf, ngx_array_t *ports);
-static ngx_int_t ngx_http_server_names(ngx_conf_t *cf,
-    ngx_http_core_main_conf_t *cmcf, ngx_http_conf_addr_t *addr);
-static ngx_int_t ngx_http_cmp_conf_addrs(const void *one, const void *two);
-static int ngx_libc_cdecl ngx_http_cmp_dns_wildcards(const void *one,
-    const void *two);
-
-static ngx_int_t ngx_http_init_listening(ngx_conf_t *cf,
-    ngx_http_conf_port_t *port);
-static ngx_listening_t *ngx_http_add_listening(ngx_conf_t *cf,
-    ngx_http_conf_addr_t *addr);
-static ngx_int_t ngx_http_add_addrs(ngx_conf_t *cf, ngx_http_port_t *hport,
-    ngx_http_conf_addr_t *addr);
-#if (NGX_HAVE_INET6)
-static ngx_int_t ngx_http_add_addrs6(ngx_conf_t *cf, ngx_http_port_t *hport,
-    ngx_http_conf_addr_t *addr);
-#endif
-
-ngx_uint_t   ngx_http_max_module;
-
-
-ngx_http_output_header_filter_pt  ngx_http_top_header_filter;
-ngx_http_output_body_filter_pt    ngx_http_top_body_filter;
-ngx_http_request_body_filter_pt   ngx_http_top_request_body_filter;
-
-
-ngx_str_t  ngx_http_html_default_types[] = {
-    ngx_string("text/html"),
-    ngx_null_string
-};
-
-
-static ngx_command_t  ngx_http_commands[] = {
-
-    { ngx_string("http"),
-      NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
-      ngx_http_block,
-      0,
-      0,
-      NULL },
-
-      ngx_null_command
-};
-
-
-static ngx_core_module_t  ngx_http_module_ctx = {
-    ngx_string("http"),
-    NULL,
-    NULL
-};
-
-
-ngx_module_t  ngx_http_module = {
-    NGX_MODULE_V1,
-    &ngx_http_module_ctx,                  /* module context */
-    ngx_http_commands,                     /* module directives */
-    NGX_CORE_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 char *
-ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
-{
-    char                        *rv;
-    ngx_uint_t                   mi, m, s;
-    ngx_conf_t                   pcf;
-    ngx_http_module_t           *module;
-    ngx_http_conf_ctx_t         *ctx;
-    ngx_http_core_loc_conf_t    *clcf;
-    ngx_http_core_srv_conf_t   **cscfp;
-    ngx_http_core_main_conf_t   *cmcf;
-
-    if (*(ngx_http_conf_ctx_t **) conf) {
-        return "is duplicate";
-    }
-
-    /* the main http context */
-
-    ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
-    if (ctx == NULL) {
-        return NGX_CONF_ERROR;
-    }
-
-    *(ngx_http_conf_ctx_t **) conf = ctx;
-
-
-    /* count the number of the http modules and set up their indices */
-
-    ngx_http_max_module = ngx_count_modules(cf->cycle, NGX_HTTP_MODULE);
-
-
-    /* the http main_conf context, it is the same in the all http contexts */
-
-    ctx->main_conf = ngx_pcalloc(cf->pool,
-                                 sizeof(void *) * ngx_http_max_module);
-    if (ctx->main_conf == NULL) {
-        return NGX_CONF_ERROR;
-    }
-
-
-    /*
-     * the http null srv_conf context, it is used to merge
-     * the server{}s' srv_conf's
-     */
-
-    ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
-    if (ctx->srv_conf == NULL) {
-        return NGX_CONF_ERROR;
-    }
-
-
-    /*
-     * the http null loc_conf context, it is used to merge
-     * the server{}s' loc_conf's
-     */
-
-    ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
-    if (ctx->loc_conf == NULL) {
-        return NGX_CONF_ERROR;
-    }
-
-
-    /*
-     * create the main_conf's, the null srv_conf's, and the null loc_conf's
-     * of the all http modules
-     */
-
-    for (m = 0; cf->cycle->modules[m]; m++) {
-        if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) {
-            continue;
-        }
-
-        module = cf->cycle->modules[m]->ctx;
-        mi = cf->cycle->modules[m]->ctx_index;
-
-        if (module->create_main_conf) {
-            ctx->main_conf[mi] = module->create_main_conf(cf);
-            if (ctx->main_conf[mi] == NULL) {
-                return NGX_CONF_ERROR;
-            }
-        }
-
-        if (module->create_srv_conf) {
-            ctx->srv_conf[mi] = module->create_srv_conf(cf);
-            if (ctx->srv_conf[mi] == NULL) {
-                return NGX_CONF_ERROR;
-            }
-        }
-
-        if (module->create_loc_conf) {
-            ctx->loc_conf[mi] = module->create_loc_conf(cf);
-            if (ctx->loc_conf[mi] == NULL) {
-                return NGX_CONF_ERROR;
-            }
-        }
-    }
-
-    pcf = *cf;
-    cf->ctx = ctx;
-
-    for (m = 0; cf->cycle->modules[m]; m++) {
-        if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) {
-            continue;
-        }
-
-        module = cf->cycle->modules[m]->ctx;
-
-        if (module->preconfiguration) {
-            if (module->preconfiguration(cf) != NGX_OK) {
-                return NGX_CONF_ERROR;
-            }
-        }
-    }
-
-    /* parse inside the http{} block */
-
-    cf->module_type = NGX_HTTP_MODULE;
-    cf->cmd_type = NGX_HTTP_MAIN_CONF;
-    rv = ngx_conf_parse(cf, NULL);
-
-    if (rv != NGX_CONF_OK) {
-        goto failed;
-    }
-
-    /*
-     * init http{} main_conf's, merge the server{}s' srv_conf's
-     * and its location{}s' loc_conf's
-     */
-
-    cmcf = ctx->main_conf[ngx_http_core_module.ctx_index];
-    cscfp = cmcf->servers.elts;
-
-    for (m = 0; cf->cycle->modules[m]; m++) {
-        if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) {
-            continue;
-        }
-
-        module = cf->cycle->modules[m]->ctx;
-        mi = cf->cycle->modules[m]->ctx_index;
-
-        /* init http{} main_conf's */
-
-        if (module->init_main_conf) {
-            rv = module->init_main_conf(cf, ctx->main_conf[mi]);
-            if (rv != NGX_CONF_OK) {
-                goto failed;
-            }
-        }
-
-        rv = ngx_http_merge_servers(cf, cmcf, module, mi);
-        if (rv != NGX_CONF_OK) {
-            goto failed;
-        }
-    }
-
-
-    /* create location trees */
-
-    for (s = 0; s < cmcf->servers.nelts; s++) {
-
-        clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index];
-
-        if (ngx_http_init_locations(cf, cscfp[s], clcf) != NGX_OK) {
-            return NGX_CONF_ERROR;
-        }
-
-        if (ngx_http_init_static_location_trees(cf, clcf) != NGX_OK) {
-            return NGX_CONF_ERROR;
-        }
-    }
-
-
-    if (ngx_http_init_phases(cf, cmcf) != NGX_OK) {
-        return NGX_CONF_ERROR;
-    }
-
-    if (ngx_http_init_headers_in_hash(cf, cmcf) != NGX_OK) {
-        return NGX_CONF_ERROR;
-    }
-
-
-    for (m = 0; cf->cycle->modules[m]; m++) {
-        if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) {
-            continue;
-        }
-
-        module = cf->cycle->modules[m]->ctx;
-
-        if (module->postconfiguration) {
-            if (module->postconfiguration(cf) != NGX_OK) {
-                return NGX_CONF_ERROR;
-            }
-        }
-    }
-
-    if (ngx_http_variables_init_vars(cf) != NGX_OK) {
-        return NGX_CONF_ERROR;
-    }
-
-    /*
-     * http{}'s cf->ctx was needed while the configuration merging
-     * and in postconfiguration process
-     */
-
-    *cf = pcf;
-
-
-    if (ngx_http_init_phase_handlers(cf, cmcf) != NGX_OK) {
-        return NGX_CONF_ERROR;
-    }
-
-
-    /* optimize the lists of ports, addresses and server names */
-
-    if (ngx_http_optimize_servers(cf, cmcf, cmcf->ports) != NGX_OK) {
-        return NGX_CONF_ERROR;
-    }
-
-    return NGX_CONF_OK;
-
-failed:
-
-    *cf = pcf;
-
-    return rv;
-}
-
-
-static ngx_int_t
-ngx_http_init_phases(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf)
-{
-    if (ngx_array_init(&cmcf->phases[NGX_HTTP_POST_READ_PHASE].handlers,
-                       cf->pool, 1, sizeof(ngx_http_handler_pt))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    if (ngx_array_init(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers,
-                       cf->pool, 1, sizeof(ngx_http_handler_pt))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    if (ngx_array_init(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers,
-                       cf->pool, 1, sizeof(ngx_http_handler_pt))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    if (ngx_array_init(&cmcf->phases[NGX_HTTP_PREACCESS_PHASE].handlers,
-                       cf->pool, 1, sizeof(ngx_http_handler_pt))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    if (ngx_array_init(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers,
-                       cf->pool, 2, sizeof(ngx_http_handler_pt))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    if (ngx_array_init(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers,
-                       cf->pool, 4, sizeof(ngx_http_handler_pt))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    if (ngx_array_init(&cmcf->phases[NGX_HTTP_LOG_PHASE].handlers,
-                       cf->pool, 1, sizeof(ngx_http_handler_pt))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_init_headers_in_hash(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf)
-{
-    ngx_array_t         headers_in;
-    ngx_hash_key_t     *hk;
-    ngx_hash_init_t     hash;
-    ngx_http_header_t  *header;
-
-    if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    for (header = ngx_http_headers_in; header->name.len; header++) {
-        hk = ngx_array_push(&headers_in);
-        if (hk == NULL) {
-            return NGX_ERROR;
-        }
-
-        hk->key = header->name;
-        hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
-        hk->value = header;
-    }
-
-    hash.hash = &cmcf->headers_in_hash;
-    hash.key = ngx_hash_key_lc;
-    hash.max_size = 512;
-    hash.bucket_size = ngx_align(64, ngx_cacheline_size);
-    hash.name = "headers_in_hash";
-    hash.pool = cf->pool;
-    hash.temp_pool = NULL;
-
-    if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
-        return NGX_ERROR;
-    }
-
-    return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_init_phase_handlers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf)
-{
-    ngx_int_t                   j;
-    ngx_uint_t                  i, n;
-    ngx_uint_t                  find_config_index, use_rewrite, use_access;
-    ngx_http_handler_pt        *h;
-    ngx_http_phase_handler_t   *ph;
-    ngx_http_phase_handler_pt   checker;
-
-    cmcf->phase_engine.server_rewrite_index = (ngx_uint_t) -1;
-    cmcf->phase_engine.location_rewrite_index = (ngx_uint_t) -1;
-    find_config_index = 0;
-    use_rewrite = cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers.nelts ? 1 : 0;
-    use_access = cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers.nelts ? 1 : 0;
-
-    n = 1                  /* find config phase */
-        + use_rewrite      /* post rewrite phase */
-        + use_access       /* post access phase */
-        + cmcf->try_files;
-
-    for (i = 0; i < NGX_HTTP_LOG_PHASE; i++) {
-        n += cmcf->phases[i].handlers.nelts;
-    }
-
-    ph = ngx_pcalloc(cf->pool,
-                     n * sizeof(ngx_http_phase_handler_t) + sizeof(void *));
-    if (ph == NULL) {
-        return NGX_ERROR;
-    }
-
-    cmcf->phase_engine.handlers = ph;
-    n = 0;
-
-    for (i = 0; i < NGX_HTTP_LOG_PHASE; i++) {
-        h = cmcf->phases[i].handlers.elts;
-
-        switch (i) {
-
-        case NGX_HTTP_SERVER_REWRITE_PHASE:
-            if (cmcf->phase_engine.server_rewrite_index == (ngx_uint_t) -1) {
-                cmcf->phase_engine.server_rewrite_index = n;
-            }
-            checker = ngx_http_core_rewrite_phase;
-
-            break;
-
-        case NGX_HTTP_FIND_CONFIG_PHASE:
-            find_config_index = n;
-
-            ph->checker = ngx_http_core_find_config_phase;
-            n++;
-            ph++;
-
-            continue;
-
-        case NGX_HTTP_REWRITE_PHASE:
-            if (cmcf->phase_engine.location_rewrite_index == (ngx_uint_t) -1) {
-                cmcf->phase_engine.location_rewrite_index = n;
-            }
-            checker = ngx_http_core_rewrite_phase;
-
-            break;
-
-        case NGX_HTTP_POST_REWRITE_PHASE:
-            if (use_rewrite) {
-                ph->checker = ngx_http_core_post_rewrite_phase;
-                ph->next = find_config_index;
-                n++;
-                ph++;
-            }
-
-            continue;
-
-        case NGX_HTTP_ACCESS_PHASE:
-            checker = ngx_http_core_access_phase;
-            n++;
-            break;
-
-        case NGX_HTTP_POST_ACCESS_PHASE:
-            if (use_access) {
-                ph->checker = ngx_http_core_post_access_phase;
-                ph->next = n;
-                ph++;
-            }
-
-            continue;
-
-        case NGX_HTTP_TRY_FILES_PHASE:
-            if (cmcf->try_files) {
-                ph->checker = ngx_http_core_try_files_phase;
-                n++;
-                ph++;
-            }
-
-            continue;
-
-        case NGX_HTTP_CONTENT_PHASE:
-            checker = ngx_http_core_content_phase;
-            break;
-
-        default:
-            checker = ngx_http_core_generic_phase;
-        }
-
-        n += cmcf->phases[i].handlers.nelts;
-
-        for (j = cmcf->phases[i].handlers.nelts - 1; j >=0; j--) {
-            ph->checker = checker;
-            ph->handler = h[j];
-            ph->next = n;
-            ph++;
-        }
-    }
-
-    return NGX_OK;
-}
-
-
-static char *
-ngx_http_merge_servers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf,
-    ngx_http_module_t *module, ngx_uint_t ctx_index)
-{
-    char                        *rv;
-    ngx_uint_t                   s;
-    ngx_http_conf_ctx_t         *ctx, saved;
-    ngx_http_core_loc_conf_t    *clcf;
-    ngx_http_core_srv_conf_t   **cscfp;
-
-    cscfp = cmcf->servers.elts;
-    ctx = (ngx_http_conf_ctx_t *) cf->ctx;
-    saved = *ctx;
-    rv = NGX_CONF_OK;
-
-    for (s = 0; s < cmcf->servers.nelts; s++) {
-
-        /* merge the server{}s' srv_conf's */
-
-        ctx->srv_conf = cscfp[s]->ctx->srv_conf;
-
-        if (module->merge_srv_conf) {
-            rv = module->merge_srv_conf(cf, saved.srv_conf[ctx_index],
-                                        cscfp[s]->ctx->srv_conf[ctx_index]);
-            if (rv != NGX_CONF_OK) {
-                goto failed;
-            }
-        }
-
-        if (module->merge_loc_conf) {
-
-            /* merge the server{}'s loc_conf */
-
-            ctx->loc_conf = cscfp[s]->ctx->loc_conf;
-
-            rv = module->merge_loc_conf(cf, saved.loc_conf[ctx_index],
-                                        cscfp[s]->ctx->loc_conf[ctx_index]);
-            if (rv != NGX_CONF_OK) {
-                goto failed;
-            }
-
-            /* merge the locations{}' loc_conf's */
-
-            clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index];
-
-            rv = ngx_http_merge_locations(cf, clcf->locations,
-                                          cscfp[s]->ctx->loc_conf,
-                                          module, ctx_index);
-            if (rv != NGX_CONF_OK) {
-                goto failed;
-            }
-        }
-    }
-
-failed:
-
-    *ctx = saved;
-
-    return rv;
-}
-
-
-static char *
-ngx_http_merge_locations(ngx_conf_t *cf, ngx_queue_t *locations,
-    void **loc_conf, ngx_http_module_t *module, ngx_uint_t ctx_index)
-{
-    char                       *rv;
-    ngx_queue_t                *q;
-    ngx_http_conf_ctx_t        *ctx, saved;
-    ngx_http_core_loc_conf_t   *clcf;
-    ngx_http_location_queue_t  *lq;
-
-    if (locations == NULL) {
-        return NGX_CONF_OK;
-    }
-
-    ctx = (ngx_http_conf_ctx_t *) cf->ctx;
-    saved = *ctx;
-
-    for (q = ngx_queue_head(locations);
-         q != ngx_queue_sentinel(locations);
-         q = ngx_queue_next(q))
-    {
-        lq = (ngx_http_location_queue_t *) q;
-
-        clcf = lq->exact ? lq->exact : lq->inclusive;
-        ctx->loc_conf = clcf->loc_conf;
-
-        rv = module->merge_loc_conf(cf, loc_conf[ctx_index],
-                                    clcf->loc_conf[ctx_index]);
-        if (rv != NGX_CONF_OK) {
-            return rv;
-        }
-
-        rv = ngx_http_merge_locations(cf, clcf->locations, clcf->loc_conf,
-                                      module, ctx_index);
-        if (rv != NGX_CONF_OK) {
-            return rv;
-        }
-    }
-
-    *ctx = saved;
-
-    return NGX_CONF_OK;
-}
-
-
-static ngx_int_t
-ngx_http_init_locations(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
-    ngx_http_core_loc_conf_t *pclcf)
-{
-    ngx_uint_t                   n;
-    ngx_queue_t                 *q, *locations, *named, tail;
-    ngx_http_core_loc_conf_t    *clcf;
-    ngx_http_location_queue_t   *lq;
-    ngx_http_core_loc_conf_t   **clcfp;
-#if (NGX_PCRE)
-    ngx_uint_t                   r;
-    ngx_queue_t                 *regex;
-#endif
-
-    locations = pclcf->locations;
-
-    if (locations == NULL) {
-        return NGX_OK;
-    }
-
-    ngx_queue_sort(locations, ngx_http_cmp_locations);
-
-    named = NULL;
-    n = 0;
-#if (NGX_PCRE)
-    regex = NULL;
-    r = 0;
-#endif
-
-    for (q = ngx_queue_head(locations);
-         q != ngx_queue_sentinel(locations);
-         q = ngx_queue_next(q))
-    {
-        lq = (ngx_http_location_queue_t *) q;
-
-        clcf = lq->exact ? lq->exact : lq->inclusive;
-
-        if (ngx_http_init_locations(cf, NULL, clcf) != NGX_OK) {
-            return NGX_ERROR;
-        }
-
-#if (NGX_PCRE)
-
-        if (clcf->regex) {
-            r++;
-
-            if (regex == NULL) {
-                regex = q;
-            }
-
-            continue;
-        }
-
-#endif
-
-        if (clcf->named) {
-            n++;
-
-            if (named == NULL) {
-                named = q;
-            }
-
-            continue;
-        }
-
-        if (clcf->noname) {
-            break;
-        }
-    }
-
-    if (q != ngx_queue_sentinel(locations)) {
-        ngx_queue_split(locations, q, &tail);
-    }
-
-    if (named) {
-        clcfp = ngx_palloc(cf->pool,
-                           (n + 1) * sizeof(ngx_http_core_loc_conf_t *));
-        if (clcfp == NULL) {
-            return NGX_ERROR;
-        }
-
-        cscf->named_locations = clcfp;
-
-        for (q = named;
-             q != ngx_queue_sentinel(locations);
-             q = ngx_queue_next(q))
-        {
-            lq = (ngx_http_location_queue_t *) q;
-
-            *(clcfp++) = lq->exact;
-        }
-
-        *clcfp = NULL;
-
-        ngx_queue_split(locations, named, &tail);
-    }
-
-#if (NGX_PCRE)
-
-    if (regex) {
-
-        clcfp = ngx_palloc(cf->pool,
-                           (r + 1) * sizeof(ngx_http_core_loc_conf_t *));
-        if (clcfp == NULL) {
-            return NGX_ERROR;
-        }
-
-        pclcf->regex_locations = clcfp;
-
-        for (q = regex;
-             q != ngx_queue_sentinel(locations);
-             q = ngx_queue_next(q))
-        {
-            lq = (ngx_http_location_queue_t *) q;
-
-            *(clcfp++) = lq->exact;
-        }
-
-        *clcfp = NULL;
-
-        ngx_queue_split(locations, regex, &tail);
-    }
-
-#endif
-
-    return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_init_static_location_trees(ngx_conf_t *cf,
-    ngx_http_core_loc_conf_t *pclcf)
-{
-    ngx_queue_t                *q, *locations;
-    ngx_http_core_loc_conf_t   *clcf;
-    ngx_http_location_queue_t  *lq;
-
-    locations = pclcf->locations;
-
-    if (locations == NULL) {
-        return NGX_OK;
-    }
-
-    if (ngx_queue_empty(locations)) {
-        return NGX_OK;
-    }
-
-    for (q = ngx_queue_head(locations);
-         q != ngx_queue_sentinel(locations);
-         q = ngx_queue_next(q))
-    {
-        lq = (ngx_http_location_queue_t *) q;
-
-        clcf = lq->exact ? lq->exact : lq->inclusive;
-
-        if (ngx_http_init_static_location_trees(cf, clcf) != NGX_OK) {
-            return NGX_ERROR;
-        }
-    }
-
-    if (ngx_http_join_exact_locations(cf, locations) != NGX_OK) {
-        return NGX_ERROR;
-    }
-
-    ngx_http_create_locations_list(locations, ngx_queue_head(locations));
-
-    pclcf->static_locations = ngx_http_create_locations_tree(cf, locations, 0);
-    if (pclcf->static_locations == NULL) {
-        return NGX_ERROR;
-    }
-
-    return NGX_OK;
-}
-
-
-ngx_int_t
-ngx_http_add_location(ngx_conf_t *cf, ngx_queue_t **locations,
-    ngx_http_core_loc_conf_t *clcf)
-{
-    ngx_http_location_queue_t  *lq;
-
-    if (*locations == NULL) {
-        *locations = ngx_palloc(cf->temp_pool,
-                                sizeof(ngx_http_location_queue_t));
-        if (*locations == NULL) {
-            return NGX_ERROR;
-        }
-
-        ngx_queue_init(*locations);
-    }
-
-    lq = ngx_palloc(cf->temp_pool, sizeof(ngx_http_location_queue_t));
-    if (lq == NULL) {
-        return NGX_ERROR;
-    }
-
-    if (clcf->exact_match
-#if (NGX_PCRE)
-        || clcf->regex
-#endif
-        || clcf->named || clcf->noname)
-    {
-        lq->exact = clcf;
-        lq->inclusive = NULL;
-
-    } else {
-        lq->exact = NULL;
-        lq->inclusive = clcf;
-    }
-
-    lq->name = &clcf->name;
-    lq->file_name = cf->conf_file->file.name.data;
-    lq->line = cf->conf_file->line;
-
-    ngx_queue_init(&lq->list);
-
-    ngx_queue_insert_tail(*locations, &lq->queue);
-
-    return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_cmp_locations(const ngx_queue_t *one, const ngx_queue_t *two)
-{
-    ngx_int_t                   rc;
-    ngx_http_core_loc_conf_t   *first, *second;
-    ngx_http_location_queue_t  *lq1, *lq2;
-
-    lq1 = (ngx_http_location_queue_t *) one;
-    lq2 = (ngx_http_location_queue_t *) two;
-
-    first = lq1->exact ? lq1->exact : lq1->inclusive;
-    second = lq2->exact ? lq2->exact : lq2->inclusive;
-
-    if (first->noname && !second->noname) {
-        /* shift no named locations to the end */
-        return 1;
-    }
-
-    if (!first->noname && second->noname) {
-        /* shift no named locations to the end */
-        return -1;
-    }
-
-    if (first->noname || second->noname) {
-        /* do not sort no named locations */
-        return 0;
-    }
-
-    if (first->named && !second->named) {
-        /* shift named locations to the end */
-        return 1;
-    }
-
-    if (!first->named && second->named) {
-        /* shift named locations to the end */
-        return -1;
-    }
-
-    if (first->named && second->named) {
-        return ngx_strcmp(first->name.data, second->name.data);
-    }
-
-#if (NGX_PCRE)
-
-    if (first->regex && !second->regex) {
-        /* shift the regex matches to the end */
-        return 1;
-    }
-
-    if (!first->regex && second->regex) {
-        /* shift the regex matches to the end */
-        return -1;
-    }
-
-    if (first->regex || second->regex) {
-        /* do not sort the regex matches */
-        return 0;
-    }
-
-#endif
-
-    rc = ngx_filename_cmp(first->name.data, second->name.data,
-                          ngx_min(first->name.len, second->name.len) + 1);
-
-    if (rc == 0 && !first->exact_match && second->exact_match) {
-        /* an exact match must be before the same inclusive one */
-        return 1;
-    }
-
-    return rc;
-}
-
-
-static ngx_int_t
-ngx_http_join_exact_locations(ngx_conf_t *cf, ngx_queue_t *locations)
-{
-    ngx_queue_t                *q, *x;
-    ngx_http_location_queue_t  *lq, *lx;
-
-    q = ngx_queue_head(locations);
-
-    while (q != ngx_queue_last(locations)) {
-
-        x = ngx_queue_next(q);
-
-        lq = (ngx_http_location_queue_t *) q;
-        lx = (ngx_http_location_queue_t *) x;
-
-        if (lq->name->len == lx->name->len
-            && ngx_filename_cmp(lq->name->data, lx->name->data, lx->name->len)
-               == 0)
-        {
-            if ((lq->exact && lx->exact) || (lq->inclusive && lx->inclusive)) {
-                ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
-                              "duplicate location \"%V\" in %s:%ui",
-                              lx->name, lx->file_name, lx->line);
-
-                return NGX_ERROR;
-            }
-
-            lq->inclusive = lx->inclusive;
-
-            ngx_queue_remove(x);
-
-            continue;
-        }
-
-        q = ngx_queue_next(q);
-    }
-
-    return NGX_OK;
-}
-
-
-static void
-ngx_http_create_locations_list(ngx_queue_t *locations, ngx_queue_t *q)
-{
-    u_char                     *name;
-    size_t                      len;
-    ngx_queue_t                *x, tail;
-    ngx_http_location_queue_t  *lq, *lx;
-
-    if (q == ngx_queue_last(locations)) {
-        return;
-    }
-
-    lq = (ngx_http_location_queue_t *) q;
-
-    if (lq->inclusive == NULL) {
-        ngx_http_create_locations_list(locations, ngx_queue_next(q));
-        return;
-    }
-
-    len = lq->name->len;
-    name = lq->name->data;
-
-    for (x = ngx_queue_next(q);
-         x != ngx_queue_sentinel(locations);
-         x = ngx_queue_next(x))
-    {
-        lx = (ngx_http_location_queue_t *) x;
-
-        if (len > lx->name->len
-            || ngx_filename_cmp(name, lx->name->data, len) != 0)
-        {
-            break;
-        }
-    }
-
-    q = ngx_queue_next(q);
-
-    if (q == x) {
-        ngx_http_create_locations_list(locations, x);
-        return;
-    }
-
-    ngx_queue_split(locations, q, &tail);
-    ngx_queue_add(&lq->list, &tail);
-
-    if (x == ngx_queue_sentinel(locations)) {
-        ngx_http_create_locations_list(&lq->list, ngx_queue_head(&lq->list));
-        return;
-    }
-
-    ngx_queue_split(&lq->list, x, &tail);
-    ngx_queue_add(locations, &tail);
-
-    ngx_http_create_locations_list(&lq->list, ngx_queue_head(&lq->list));
-
-    ngx_http_create_locations_list(locations, x);
-}
-
-
-/*
- * to keep cache locality for left leaf nodes, allocate nodes in following
- * order: node, left subtree, right subtree, inclusive subtree
- */
-
-static ngx_http_location_tree_node_t *
-ngx_http_create_locations_tree(ngx_conf_t *cf, ngx_queue_t *locations,
-    size_t prefix)
-{
-    size_t                          len;
-    ngx_queue_t                    *q, tail;
-    ngx_http_location_queue_t      *lq;
-    ngx_http_location_tree_node_t  *node;
-
-    q = ngx_queue_middle(locations);
-
-    lq = (ngx_http_location_queue_t *) q;
-    len = lq->name->len - prefix;
-
-    node = ngx_palloc(cf->pool,
-                      offsetof(ngx_http_location_tree_node_t, name) + len);
-    if (node == NULL) {
-        return NULL;
-    }
-
-    node->left = NULL;
-    node->right = NULL;
-    node->tree = NULL;
-    node->exact = lq->exact;
-    node->inclusive = lq->inclusive;
-
-    node->auto_redirect = (u_char) ((lq->exact && lq->exact->auto_redirect)
-                           || (lq->inclusive && lq->inclusive->auto_redirect));
-
-    node->len = (u_char) len;
-    ngx_memcpy(node->name, &lq->name->data[prefix], len);
-
-    ngx_queue_split(locations, q, &tail);
-
-    if (ngx_queue_empty(locations)) {
-        /*
-         * ngx_queue_split() insures that if left part is empty,
-         * then right one is empty too
-         */
-        goto inclusive;
-    }
-
-    node->left = ngx_http_create_locations_tree(cf, locations, prefix);
-    if (node->left == NULL) {
-        return NULL;
-    }
-
-    ngx_queue_remove(q);
-
-    if (ngx_queue_empty(&tail)) {
-        goto inclusive;
-    }
-
-    node->right = ngx_http_create_locations_tree(cf, &tail, prefix);
-    if (node->right == NULL) {
-        return NULL;
-    }
-
-inclusive:
-
-    if (ngx_queue_empty(&lq->list)) {
-        return node;
-    }
-
-    node->tree = ngx_http_create_locations_tree(cf, &lq->list, prefix + len);
-    if (node->tree == NULL) {
-        return NULL;
-    }
-
-    return node;
-}
-
-
-ngx_int_t
-ngx_http_add_listen(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
-    ngx_http_listen_opt_t *lsopt)
-{
-    in_port_t                   p;
-    ngx_uint_t                  i;
-    struct sockaddr            *sa;
-    ngx_http_conf_port_t       *port;
-    ngx_http_core_main_conf_t  *cmcf;
-
-    cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
-
-    if (cmcf->ports == NULL) {
-        cmcf->ports = ngx_array_create(cf->temp_pool, 2,
-                                       sizeof(ngx_http_conf_port_t));
-        if (cmcf->ports == NULL) {
-            return NGX_ERROR;
-        }
-    }
-
-    sa = &lsopt->sockaddr.sockaddr;
-    p = ngx_inet_get_port(sa);
-
-    port = cmcf->ports->elts;
-    for (i = 0; i < cmcf->ports->nelts; i++) {
-
-        if (p != port[i].port || sa->sa_family != port[i].family) {
-            continue;
-        }
-
-        /* a port is already in the port list */
-
-        return ngx_http_add_addresses(cf, cscf, &port[i], lsopt);
-    }
-
-    /* add a port to the port list */
-
-    port = ngx_array_push(cmcf->ports);
-    if (port == NULL) {
-        return NGX_ERROR;
-    }
-
-    port->family = sa->sa_family;
-    port->port = p;
-    port->addrs.elts = NULL;
-
-    return ngx_http_add_address(cf, cscf, port, lsopt);
-}
-
-
-static ngx_int_t
-ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
-    ngx_http_conf_port_t *port, ngx_http_listen_opt_t *lsopt)
-{
-    ngx_uint_t             i, default_server, proxy_protocol;
-    ngx_http_conf_addr_t  *addr;
-#if (NGX_HTTP_SSL)
-    ngx_uint_t             ssl;
-#endif
-#if (NGX_HTTP_V2)
-    ngx_uint_t             http2;
-#endif
-
-    /*
-     * we cannot compare whole sockaddr struct's as kernel
-     * may fill some fields in inherited sockaddr struct's
-     */
-
-    addr = port->addrs.elts;
-
-    for (i = 0; i < port->addrs.nelts; i++) {
-
-        if (ngx_cmp_sockaddr(&lsopt->sockaddr.sockaddr, lsopt->socklen,
-                             &addr[i].opt.sockaddr.sockaddr,
-                             addr[i].opt.socklen, 0)
-            != NGX_OK)
-        {
-            continue;
-        }
-
-        /* the address is already in the address list */
-
-        if (ngx_http_add_server(cf, cscf, &addr[i]) != NGX_OK) {
-            return NGX_ERROR;
-        }
-
-        /* preserve default_server bit during listen options overwriting */
-        default_server = addr[i].opt.default_server;
-
-        proxy_protocol = lsopt->proxy_protocol || addr[i].opt.proxy_protocol;
-
-#if (NGX_HTTP_SSL)
-        ssl = lsopt->ssl || addr[i].opt.ssl;
-#endif
-#if (NGX_HTTP_V2)
-        http2 = lsopt->http2 || addr[i].opt.http2;
-#endif
-
-        if (lsopt->set) {
-
-            if (addr[i].opt.set) {
-                ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
-                        "duplicate listen options for %s", addr[i].opt.addr);
-                return NGX_ERROR;
-            }
-
-            addr[i].opt = *lsopt;
-        }
-
-        /* check the duplicate "default" server for this address:port */
-
-        if (lsopt->default_server) {
-
-            if (default_server) {
-                ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
-                        "a duplicate default server for %s", addr[i].opt.addr);
-                return NGX_ERROR;
-            }
-
-            default_server = 1;
-            addr[i].default_server = cscf;
-        }
-
-        addr[i].opt.default_server = default_server;
-        addr[i].opt.proxy_protocol = proxy_protocol;
-#if (NGX_HTTP_SSL)
-        addr[i].opt.ssl = ssl;
-#endif
-#if (NGX_HTTP_V2)
-        addr[i].opt.http2 = http2;
-#endif
-
-        return NGX_OK;
-    }
-
-    /* add the address to the addresses list that bound to this port */
-
-    return ngx_http_add_address(cf, cscf, port, lsopt);
-}
-
-
-/*
- * add the server address, the server names and the server core module
- * configurations to the port list
- */
-
-static ngx_int_t
-ngx_http_add_address(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
-    ngx_http_conf_port_t *port, ngx_http_listen_opt_t *lsopt)
-{
-    ngx_http_conf_addr_t  *addr;
-
-    if (port->addrs.elts == NULL) {
-        if (ngx_array_init(&port->addrs, cf->temp_pool, 4,
-                           sizeof(ngx_http_conf_addr_t))
-            != NGX_OK)
-        {
-            return NGX_ERROR;
-        }
-    }
-
-#if (NGX_HTTP_V2 && NGX_HTTP_SSL                                              \
-     && !defined TLSEXT_TYPE_application_layer_protocol_negotiation           \
-     && !defined TLSEXT_TYPE_next_proto_neg)
-
-    if (lsopt->http2 && lsopt->ssl) {
-        ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
-                           "nginx was built with OpenSSL that lacks ALPN "
-                           "and NPN support, HTTP/2 is not enabled for %s",
-                           lsopt->addr);
-    }
-
-#endif
-
-    addr = ngx_array_push(&port->addrs);
-    if (addr == NULL) {
-        return NGX_ERROR;
-    }
-
-    addr->opt = *lsopt;
-    addr->hash.buckets = NULL;
-    addr->hash.size = 0;
-    addr->wc_head = NULL;
-    addr->wc_tail = NULL;
-#if (NGX_PCRE)
-    addr->nregex = 0;
-    addr->regex = NULL;
-#endif
-    addr->default_server = cscf;
-    addr->servers.elts = NULL;
-
-    return ngx_http_add_server(cf, cscf, addr);
-}
-
-
-/* add the server core module configuration to the address:port */
-
-static ngx_int_t
-ngx_http_add_server(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf,
-    ngx_http_conf_addr_t *addr)
-{
-    ngx_uint_t                  i;
-    ngx_http_core_srv_conf_t  **server;
-
-    if (addr->servers.elts == NULL) {
-        if (ngx_array_init(&addr->servers, cf->temp_pool, 4,
-                           sizeof(ngx_http_core_srv_conf_t *))
-            != NGX_OK)
-        {
-            return NGX_ERROR;
-        }
-
-    } else {
-        server = addr->servers.elts;
-        for (i = 0; i < addr->servers.nelts; i++) {
-            if (server[i] == cscf) {
-                ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
-                                   "a duplicate listen %s", addr->opt.addr);
-                return NGX_ERROR;
-            }
-        }
-    }
-
-    server = ngx_array_push(&addr->servers);
-    if (server == NULL) {
-        return NGX_ERROR;
-    }
-
-    *server = cscf;
-
-    return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_optimize_servers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf,
-    ngx_array_t *ports)
-{
-    ngx_uint_t             p, a;
-    ngx_http_conf_port_t  *port;
-    ngx_http_conf_addr_t  *addr;
-
-    if (ports == NULL) {
-        return NGX_OK;
-    }
-
-    port = ports->elts;
-    for (p = 0; p < ports->nelts; p++) {
-
-        ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts,
-                 sizeof(ngx_http_conf_addr_t), ngx_http_cmp_conf_addrs);
-
-        /*
-         * check whether all name-based servers have the same
-         * configuration as a default server for given address:port
-         */
-
-        addr = port[p].addrs.elts;
-        for (a = 0; a < port[p].addrs.nelts; a++) {
-
-            if (addr[a].servers.nelts > 1
-#if (NGX_PCRE)
-                || addr[a].default_server->captures
-#endif
-               )
-            {
-                if (ngx_http_server_names(cf, cmcf, &addr[a]) != NGX_OK) {
-                    return NGX_ERROR;
-                }
-            }
-        }
-
-        if (ngx_http_init_listening(cf, &port[p]) != NGX_OK) {
-            return NGX_ERROR;
-        }
-    }
-
-    return NGX_OK;
-}
-
-
-static ngx_int_t
-ngx_http_server_names(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf,
-    ngx_http_conf_addr_t *addr)
-{
-    ngx_int_t                   rc;
-    ngx_uint_t                  n, s;
-    ngx_hash_init_t             hash;
-    ngx_hash_keys_arrays_t      ha;
-    ngx_http_server_name_t     *name;
-    ngx_http_core_srv_conf_t  **cscfp;
-#if (NGX_PCRE)
-    ngx_uint_t                  regex, i;
-
-    regex = 0;
-#endif
-
-    ngx_memzero(&ha, sizeof(ngx_hash_keys_arrays_t));
-
-    ha.temp_pool = ngx_create_pool(NGX_DEFAULT_POOL_SIZE, cf->log);
-    if (ha.temp_pool == NULL) {
-        return NGX_ERROR;
-    }
-
-    ha.pool = cf->pool;
-
-    if (ngx_hash_keys_array_init(&ha, NGX_HASH_LARGE) != NGX_OK) {
-        goto failed;
-    }
-
-    cscfp = addr->servers.elts;
-
-    for (s = 0; s < addr->servers.nelts; s++) {
-
-        name = cscfp[s]->server_names.elts;
-
-        for (n = 0; n < cscfp[s]->server_names.nelts; n++) {
-
-#if (NGX_PCRE)
-            if (name[n].regex) {
-                regex++;
-                continue;
-            }
-#endif
-
-            rc = ngx_hash_add_key(&ha, &name[n].name, name[n].server,
-                                  NGX_HASH_WILDCARD_KEY);
-
-            if (rc == NGX_ERROR) {
-                return NGX_ERROR;
-            }
-
-            if (rc == NGX_DECLINED) {
-                ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
-                              "invalid server name or wildcard \"%V\" on %s",
-                              &name[n].name, addr->opt.addr);
-                return NGX_ERROR;
-            }
-
-            if (rc == NGX_BUSY) {
-                ngx_log_error(NGX_LOG_WARN, cf->log, 0,
-                              "conflicting server name \"%V\" on %s, ignored",
-                              &name[n].name, addr->opt.addr);
-            }
-        }
-    }
-
-    hash.key = ngx_hash_key_lc;
-    hash.max_size = cmcf->server_names_hash_max_size;
-    hash.bucket_size = cmcf->server_names_hash_bucket_size;
-    hash.name = "server_names_hash";
-    hash.pool = cf->pool;
-
-    if (ha.keys.nelts) {
-        hash.hash = &addr->hash;
-        hash.temp_pool = NULL;
-
-        if (ngx_hash_init(&hash, ha.keys.elts, ha.keys.nelts) != NGX_OK) {
-            goto failed;
-        }
-    }
-
-    if (ha.dns_wc_head.nelts) {
-
-        ngx_qsort(ha.dns_wc_head.elts, (size_t) ha.dns_wc_head.nelts,
-                  sizeof(ngx_hash_key_t), ngx_http_cmp_dns_wildcards);
-
-        hash.hash = NULL;
-        hash.temp_pool = ha.temp_pool;
-
-        if (ngx_hash_wildcard_init(&hash, ha.dns_wc_head.elts,
-                                   ha.dns_wc_head.nelts)
-            != NGX_OK)
-        {
-            goto failed;
-        }
-
-        addr->wc_head = (ngx_hash_wildcard_t *) hash.hash;
-    }
-
-    if (ha.dns_wc_tail.nelts) {
-
-        ngx_qsort(ha.dns_wc_tail.elts, (size_t) ha.dns_wc_tail.nelts,
-                  sizeof(ngx_hash_key_t), ngx_http_cmp_dns_wildcards);
-
-        hash.hash = NULL;
-        hash.temp_pool = ha.temp_pool;
-
-        if (ngx_hash_wildcard_init(&hash, ha.dns_wc_tail.elts,
-                                   ha.dns_wc_tail.nelts)
-            != NGX_OK)
-        {
-            goto failed;
-        }
-
-        addr->wc_tail = (ngx_hash_wildcard_t *) hash.hash;
-    }
-
-    ngx_destroy_pool(ha.temp_pool);
-
-#if (NGX_PCRE)
-
-    if (regex == 0) {
-        return NGX_OK;
-    }
-
-    addr->nregex = regex;
-    addr->regex = ngx_palloc(cf->pool, regex * sizeof(ngx_http_server_name_t));
-    if (addr->regex == NULL) {
-        return NGX_ERROR;
-    }
-
-    i = 0;
-
-    for (s = 0; s < addr->servers.nelts; s++) {
-
-        name = cscfp[s]->server_names.elts;
-
-        for (n = 0; n < cscfp[s]->server_names.nelts; n++) {
-            if (name[n].regex) {
-                addr->regex[i++] = name[n];
-            }
-        }
-    }
-
-#endif
-
-    return NGX_OK;
-
-failed:
-
-    ngx_destroy_pool(ha.temp_pool);
-
-    return NGX_ERROR;
-}
-
-
-static ngx_int_t
-ngx_http_cmp_conf_addrs(const void *one, const void *two)
-{
-    ngx_http_conf_addr_t  *first, *second;
-
-    first = (ngx_http_conf_addr_t *) one;
-    second = (ngx_http_conf_addr_t *) two;
-
-    if (first->opt.wildcard) {
-        /* a wildcard address must be the last resort, shift it to the end */
-        return 1;
-    }
-
-    if (second->opt.wildcard) {
-        /* a wildcard address must be the last resort, shift it to the end */
-        return -1;
-    }
-
-    if (first->opt.bind && !second->opt.bind) {
-        /* shift explicit bind()ed addresses to the start */
-        return -1;
-    }
-
-    if (!first->opt.bind && second->opt.bind) {
-        /* shift explicit bind()ed addresses to the start */
-        return 1;
-    }
-
-    /* do not sort by default */
-
-    return 0;
-}
-
-
-static int ngx_libc_cdecl
-ngx_http_cmp_dns_wildcards(const void *one, const void *two)
-{
-    ngx_hash_key_t  *first, *second;
-
-    first = (ngx_hash_key_t *) one;
-    second = (ngx_hash_key_t *) two;
-
-    return ngx_dns_strcmp(first->key.data, second->key.data);
-}
-
-
-static ngx_int_t
-ngx_http_init_listening(ngx_conf_t *cf, ngx_http_conf_port_t *port)
-{
-    ngx_uint_t                 i, last, bind_wildcard;
-    ngx_listening_t           *ls;
-    ngx_http_port_t           *hport;
-    ngx_http_conf_addr_t      *addr;
-
-    addr = port->addrs.elts;
-    last = port->addrs.nelts;
-
-    /*
-     * If there is a binding to an "*:port" then we need to bind() to
-     * the "*:port" only and ignore other implicit bindings.  The bindings
-     * have been already sorted: explicit bindings are on the start, then
-     * implicit bindings go, and wildcard binding is in the end.
-     */
-
-    if (addr[last - 1].opt.wildcard) {
-        addr[last - 1].opt.bind = 1;
-        bind_wildcard = 1;
-
-    } else {
-        bind_wildcard = 0;
-    }
-
-    i = 0;
-
-    while (i < last) {
-
-        if (bind_wildcard && !addr[i].opt.bind) {
-            i++;
-            continue;
-        }
-
-        ls = ngx_http_add_listening(cf, &addr[i]);
-        if (ls == NULL) {
-            return NGX_ERROR;
-        }
-
-        hport = ngx_pcalloc(cf->pool, sizeof(ngx_http_port_t));
-        if (hport == NULL) {
-            return NGX_ERROR;
-        }
-
-        ls->servers = hport;
-
-        hport->naddrs = i + 1;
-
-        switch (ls->sockaddr->sa_family) {
-
-#if (NGX_HAVE_INET6)
-        case AF_INET6:
-            if (ngx_http_add_addrs6(cf, hport, addr) != NGX_OK) {
-                return NGX_ERROR;
-            }
-            break;
-#endif
-        default: /* AF_INET */
-            if (ngx_http_add_addrs(cf, hport, addr) != NGX_OK) {
-                return NGX_ERROR;
-            }
-            break;
-        }
-
-        if (ngx_clone_listening(cf, ls) != NGX_OK) {
-            return NGX_ERROR;
-        }
-
-        addr++;
-        last--;
-    }
-
-    return NGX_OK;
-}
-
-
-static ngx_listening_t *
-ngx_http_add_listening(ngx_conf_t *cf, ngx_http_conf_addr_t *addr)
-{
-    ngx_listening_t           *ls;
-    ngx_http_core_loc_conf_t  *clcf;
-    ngx_http_core_srv_conf_t  *cscf;
-
-    ls = ngx_create_listening(cf, &addr->opt.sockaddr.sockaddr,
-                              addr->opt.socklen);
-    if (ls == NULL) {
-        return NULL;
-    }
-
-    ls->addr_ntop = 1;
-
-    ls->handler = ngx_http_init_connection;
-
-    cscf = addr->default_server;
-    ls->pool_size = cscf->connection_pool_size;
-    ls->post_accept_timeout = cscf->client_header_timeout;
-
-    clcf = cscf->ctx->loc_conf[ngx_http_core_module.ctx_index];
-
-    ls->logp = clcf->error_log;
-    ls->log.data = &ls->addr_text;
-    ls->log.handler = ngx_accept_log_error;
-
-#if (NGX_WIN32)
-    {
-    ngx_iocp_conf_t  *iocpcf = NULL;
-
-    if (ngx_get_conf(cf->cycle->conf_ctx, ngx_events_module)) {
-        iocpcf = ngx_event_get_conf(cf->cycle->conf_ctx, ngx_iocp_module);
-    }
-    if (iocpcf && iocpcf->acceptex_read) {
-        ls->post_accept_buffer_size = cscf->client_header_buffer_size;
-    }
-    }
-#endif
-
-    ls->backlog = addr->opt.backlog;
-    ls->rcvbuf = addr->opt.rcvbuf;
-    ls->sndbuf = addr->opt.sndbuf;
-
-    ls->keepalive = addr->opt.so_keepalive;
-#if (NGX_HAVE_KEEPALIVE_TUNABLE)
-    ls->keepidle = addr->opt.tcp_keepidle;
-    ls->keepintvl = addr->opt.tcp_keepintvl;
-    ls->keepcnt = addr->opt.tcp_keepcnt;
-#endif
-
-#if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER)
-    ls->accept_filter = addr->opt.accept_filter;
-#endif
-
-#if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
-    ls->deferred_accept = addr->opt.deferred_accept;
-#endif
-
-#if (NGX_HAVE_INET6)
-    ls->ipv6only = addr->opt.ipv6only;
-#endif
-
-#if (NGX_HAVE_SETFIB)
-    ls->setfib = addr->opt.setfib;
-#endif
-
-#if (NGX_HAVE_TCP_FASTOPEN)
-    ls->fastopen = addr->opt.fastopen;
-#endif
-
-#if (NGX_HAVE_REUSEPORT)
-    ls->reuseport = addr->opt.reuseport;
-#endif
-
-    return ls;
-}
-
-
-static ngx_int_t
-ngx_http_add_addrs(ngx_conf_t *cf, ngx_http_port_t *hport,
-    ngx_http_conf_addr_t *addr)
-{
-    ngx_uint_t                 i;
-    ngx_http_in_addr_t        *addrs;
-    struct sockaddr_in        *sin;
-    ngx_http_virtual_names_t  *vn;
-
-    hport->addrs = ngx_pcalloc(cf->pool,
-                               hport->naddrs * sizeof(ngx_http_in_addr_t));
-    if (hport->addrs == NULL) {
-        return NGX_ERROR;
-    }
-
-    addrs = hport->addrs;
-
-    for (i = 0; i < hport->naddrs; i++) {
-
-        sin = &addr[i].opt.sockaddr.sockaddr_in;
-        addrs[i].addr = sin->sin_addr.s_addr;
-        addrs[i].conf.default_server = addr[i].default_server;
-#if (NGX_HTTP_SSL)
-        addrs[i].conf.ssl = addr[i].opt.ssl;
-#endif
-#if (NGX_HTTP_V2)
-        addrs[i].conf.http2 = addr[i].opt.http2;
-#endif
-        addrs[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
-
-        if (addr[i].hash.buckets == NULL
-            && (addr[i].wc_head == NULL
-                || addr[i].wc_head->hash.buckets == NULL)
-            && (addr[i].wc_tail == NULL
-                || addr[i].wc_tail->hash.buckets == NULL)
-#if (NGX_PCRE)
-            && addr[i].nregex == 0
-#endif
-            )
-        {
-            continue;
-        }
-
-        vn = ngx_palloc(cf->pool, sizeof(ngx_http_virtual_names_t));
-        if (vn == NULL) {
-            return NGX_ERROR;
-        }
-
-        addrs[i].conf.virtual_names = vn;
-
-        vn->names.hash = addr[i].hash;
-        vn->names.wc_head = addr[i].wc_head;
-        vn->names.wc_tail = addr[i].wc_tail;
-#if (NGX_PCRE)
-        vn->nregex = addr[i].nregex;
-        vn->regex = addr[i].regex;
-#endif
-    }
-
-    return NGX_OK;
-}
-
-
-#if (NGX_HAVE_INET6)
-
-static ngx_int_t
-ngx_http_add_addrs6(ngx_conf_t *cf, ngx_http_port_t *hport,
-    ngx_http_conf_addr_t *addr)
-{
-    ngx_uint_t                 i;
-    ngx_http_in6_addr_t       *addrs6;
-    struct sockaddr_in6       *sin6;
-    ngx_http_virtual_names_t  *vn;
-
-    hport->addrs = ngx_pcalloc(cf->pool,
-                               hport->naddrs * sizeof(ngx_http_in6_addr_t));
-    if (hport->addrs == NULL) {
-        return NGX_ERROR;
-    }
-
-    addrs6 = hport->addrs;
-
-    for (i = 0; i < hport->naddrs; i++) {
-
-        sin6 = &addr[i].opt.sockaddr.sockaddr_in6;
-        addrs6[i].addr6 = sin6->sin6_addr;
-        addrs6[i].conf.default_server = addr[i].default_server;
-#if (NGX_HTTP_SSL)
-        addrs6[i].conf.ssl = addr[i].opt.ssl;
-#endif
-#if (NGX_HTTP_V2)
-        addrs6[i].conf.http2 = addr[i].opt.http2;
-#endif
-        addrs6[i].conf.proxy_protocol = addr[i].opt.proxy_protocol;
-
-        if (addr[i].hash.buckets == NULL
-            && (addr[i].wc_head == NULL
-                || addr[i].wc_head->hash.buckets == NULL)
-            && (addr[i].wc_tail == NULL
-                || addr[i].wc_tail->hash.buckets == NULL)
-#if (NGX_PCRE)
-            && addr[i].nregex == 0
-#endif
-            )
-        {
-            continue;
-        }
-
-        vn = ngx_palloc(cf->pool, sizeof(ngx_http_virtual_names_t));
-        if (vn == NULL) {
-            return NGX_ERROR;
-        }
-
-        addrs6[i].conf.virtual_names = vn;
-
-        vn->names.hash = addr[i].hash;
-        vn->names.wc_head = addr[i].wc_head;
-        vn->names.wc_tail = addr[i].wc_tail;
-#if (NGX_PCRE)
-        vn->nregex = addr[i].nregex;
-        vn->regex = addr[i].regex;
-#endif
-    }
-
-    return NGX_OK;
-}
-
-#endif
-
-
-char *
-ngx_http_types_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
-{
-    char  *p = conf;
-
-    ngx_array_t     **types;
-    ngx_str_t        *value, *default_type;
-    ngx_uint_t        i, n, hash;
-    ngx_hash_key_t   *type;
-
-    types = (ngx_array_t **) (p + cmd->offset);
-
-    if (*types == (void *) -1) {
-        return NGX_CONF_OK;
-    }
-
-    default_type = cmd->post;
-
-    if (*types == NULL) {
-        *types = ngx_array_create(cf->temp_pool, 1, sizeof(ngx_hash_key_t));
-        if (*types == NULL) {
-            return NGX_CONF_ERROR;
-        }
-
-        if (default_type) {
-            type = ngx_array_push(*types);
-            if (type == NULL) {
-                return NGX_CONF_ERROR;
-            }
-
-            type->key = *default_type;
-            type->key_hash = ngx_hash_key(default_type->data,
-                                          default_type->len);
-            type->value = (void *) 4;
-        }
-    }
-
-    value = cf->args->elts;
-
-    for (i = 1; i < cf->args->nelts; i++) {
-
-        if (value[i].len == 1 && value[i].data[0] == '*') {
-            *types = (void *) -1;
-            return NGX_CONF_OK;
-        }
-
-        hash = ngx_hash_strlow(value[i].data, value[i].data, value[i].len);
-        value[i].data[value[i].len] = '\0';
-
-        type = (*types)->elts;
-        for (n = 0; n < (*types)->nelts; n++) {
-
-            if (ngx_strcmp(value[i].data, type[n].key.data) == 0) {
-                ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
-                                   "duplicate MIME type \"%V\"", &value[i]);
-                goto next;
-            }
-        }
-
-        type = ngx_array_push(*types);
-        if (type == NULL) {
-            return NGX_CONF_ERROR;
-        }
-
-        type->key = value[i];
-        type->key_hash = hash;
-        type->value = (void *) 4;
-
-    next:
-
-        continue;
-    }
-
-    return NGX_CONF_OK;
-}
-
-
-char *
-ngx_http_merge_types(ngx_conf_t *cf, ngx_array_t **keys, ngx_hash_t *types_hash,
-    ngx_array_t **prev_keys, ngx_hash_t *prev_types_hash,
-    ngx_str_t *default_types)
-{
-    ngx_hash_init_t  hash;
-
-    if (*keys) {
-
-        if (*keys == (void *) -1) {
-            return NGX_CONF_OK;
-        }
-
-        hash.hash = types_hash;
-        hash.key = NULL;
-        hash.max_size = 2048;
-        hash.bucket_size = 64;
-        hash.name = "test_types_hash";
-        hash.pool = cf->pool;
-        hash.temp_pool = NULL;
-
-        if (ngx_hash_init(&hash, (*keys)->elts, (*keys)->nelts) != NGX_OK) {
-            return NGX_CONF_ERROR;
-        }
-
-        return NGX_CONF_OK;
-    }
-
-    if (prev_types_hash->buckets == NULL) {
-
-        if (*prev_keys == NULL) {
-
-            if (ngx_http_set_default_types(cf, prev_keys, default_types)
-                != NGX_OK)
-            {
-                return NGX_CONF_ERROR;
-            }
-
-        } else if (*prev_keys == (void *) -1) {
-            *keys = *prev_keys;
-            return NGX_CONF_OK;
-        }
-
-        hash.hash = prev_types_hash;
-        hash.key = NULL;
-        hash.max_size = 2048;
-        hash.bucket_size = 64;
-        hash.name = "test_types_hash";
-        hash.pool = cf->pool;
-        hash.temp_pool = NULL;
-
-        if (ngx_hash_init(&hash, (*prev_keys)->elts, (*prev_keys)->nelts)
-            != NGX_OK)
-        {
-            return NGX_CONF_ERROR;
-        }
-    }
-
-    *types_hash = *prev_types_hash;
-
-    return NGX_CONF_OK;
-
-}
-
-
-ngx_int_t
-ngx_http_set_default_types(ngx_conf_t *cf, ngx_array_t **types,
-    ngx_str_t *default_type)
-{
-    ngx_hash_key_t  *type;
-
-    *types = ngx_array_create(cf->temp_pool, 1, sizeof(ngx_hash_key_t));
-    if (*types == NULL) {
-        return NGX_ERROR;
-    }
-
-    while (default_type->len) {
-
-        type = ngx_array_push(*types);
-        if (type == NULL) {
-            return NGX_ERROR;
-        }
-
-        type->key = *default_type;
-        type->key_hash = ngx_hash_key(default_type->data,
-                                      default_type->len);
-        type->value = (void *) 4;
-
-        default_type++;
-    }
-
-    return NGX_OK;
-}