nginx-0.3.16-RELEASE importrelease-0.3.16

    *) Feature: the ngx_http_map_module.

    *) Feature: the "types_hash_max_size" and "types_hash_bucket_size"
       directives.

    *) Feature: the "ssi_value_length" directive.

    *) Feature: the "worker_rlimit_core" directive.

    *) Workaround: the connection number in logs was always 1 if nginx was
       built by the icc 8.1 or 9.0 compilers with optimization for
       Pentium 4.

    *) Bugfix: the "config timefmt" SSI command set incorrect time format.

    *) Bugfix: nginx did not close connection to IMAP/POP3 backend for the
       SSL connections; the bug had appeared in 0.3.13.
       Thanks to Rob Mueller.

    *) Bugfix: segmentation fault may occurred in at SSL shutdown; the bug
       had appeared in 0.3.13.

12 files changed, 838 insertions, 130 deletions

diff --git a/src/http/modules/ngx_http_geo_module.c b/src/http/modules/ngx_http_geo_module.c
index bf7b9251b..a6e8db301 100644
--- a/src/http/modules/ngx_http_geo_module.c
+++ b/src/http/modules/ngx_http_geo_module.c
@@ -13,7 +13,7 @@ typedef struct {
     ngx_radix_tree_t  *tree;
     ngx_pool_t        *pool;
     ngx_array_t        values;
-} ngx_http_geo_conf_t;
+} ngx_http_geo_conf_ctx_t;
 
 
 static char *ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
@@ -95,12 +95,12 @@ ngx_http_geo_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
 static char *
 ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
 {
-    char                 *rv;
-    ngx_str_t            *value, name;
-    ngx_conf_t            save;
-    ngx_pool_t           *pool;
-    ngx_radix_tree_t     *tree;
-    ngx_http_geo_conf_t   geo;
+    char                     *rv;
+    ngx_str_t                *value, name;
+    ngx_conf_t                save;
+    ngx_pool_t               *pool;
+    ngx_radix_tree_t         *tree;
+    ngx_http_geo_conf_ctx_t   ctx;
     ngx_http_variable_t  *var;
 
     value = cf->args->elts;
@@ -135,20 +135,20 @@ ngx_http_geo_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
         return NGX_CONF_ERROR;
     }
 
-    if (ngx_array_init(&geo.values, pool, 512,
+    if (ngx_array_init(&ctx.values, pool, 512,
                        sizeof(ngx_http_variable_value_t *))
-        == NGX_ERROR)
+        != NGX_OK)
     {
         ngx_destroy_pool(pool);
         return NGX_CONF_ERROR;
     }
 
-    geo.tree = tree;
-    geo.pool = cf->pool;
+    ctx.tree = tree;
+    ctx.pool = cf->pool;
 
     save = *cf;
     cf->pool = pool;
-    cf->ctx = &geo;
+    cf->ctx = &ctx;
     cf->handler = ngx_http_geo;
     cf->handler_conf = conf;
 
@@ -182,10 +182,10 @@ ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
     ngx_str_t                  *value, file;
     ngx_uint_t                  i;
     ngx_inet_cidr_t             cidrin;
-    ngx_http_geo_conf_t        *geo;
+    ngx_http_geo_conf_ctx_t    *ctx;
     ngx_http_variable_value_t  *var, *old, **v;
 
-    geo = cf->ctx;
+    ctx = cf->ctx;
 
     if (cf->args->nelts != 2) {
         ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
@@ -223,28 +223,27 @@ ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
     }
 
     var = NULL;
-    v = geo->values.elts;
+    v = ctx->values.elts;
 
-    for (i = 0; i < geo->values.nelts; i++) {
+    for (i = 0; i < ctx->values.nelts; i++) {
         if ((size_t) v[i]->len != value[1].len) {
             continue;
         }
 
-        if (ngx_strncmp(value[1].data, v[i]->data, value[1].len) == 0)
-        {
+        if (ngx_strncmp(value[1].data, v[i]->data, value[1].len) == 0) {
             var = v[i];
             break;
         }
     }
 
     if (var == NULL) {
-        var = ngx_palloc(geo->pool, sizeof(ngx_http_variable_value_t));
+        var = ngx_palloc(ctx->pool, sizeof(ngx_http_variable_value_t));
         if (var == NULL) {
             return NGX_CONF_ERROR;
         }
 
         var->len = value[1].len;
-        var->data = ngx_pstrdup(geo->pool, &value[1]);
+        var->data = ngx_pstrdup(ctx->pool, &value[1]);
         if (var->data == NULL) {
             return NGX_CONF_ERROR;
         }
@@ -253,7 +252,7 @@ ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
         var->no_cachable = 0;
         var->not_found = 0;
 
-        v = ngx_array_push(&geo->values);
+        v = ngx_array_push(&ctx->values);
         if (v == NULL) {
             return NGX_CONF_ERROR;
         }
@@ -262,7 +261,7 @@ ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
     }
 
     for (i = 2; i; i--) {
-        rc = ngx_radix32tree_insert(geo->tree, cidrin.addr, cidrin.mask,
+        rc = ngx_radix32tree_insert(ctx->tree, cidrin.addr, cidrin.mask,
                                     (uintptr_t) var);
         if (rc == NGX_OK) {
             return NGX_CONF_OK;
@@ -275,14 +274,14 @@ ngx_http_geo(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
         /* rc == NGX_BUSY */
 
         old  = (ngx_http_variable_value_t *)
-                    ngx_radix32tree_find(geo->tree, cidrin.addr & cidrin.mask);
+                    ngx_radix32tree_find(ctx->tree, cidrin.addr & cidrin.mask);
 
         ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
                            "duplicate parameter \"%V\", value: \"%V\", "
                            "old value: \"%V\"",
                            &value[0], var, old);
 
-        rc = ngx_radix32tree_delete(geo->tree, cidrin.addr, cidrin.mask);
+        rc = ngx_radix32tree_delete(ctx->tree, cidrin.addr, cidrin.mask);
 
         if (rc == NGX_ERROR) {
             return NGX_CONF_ERROR;
diff --git a/src/http/modules/ngx_http_gzip_filter_module.c b/src/http/modules/ngx_http_gzip_filter_module.c
index e8197598f..940e082a5 100644
--- a/src/http/modules/ngx_http_gzip_filter_module.c
+++ b/src/http/modules/ngx_http_gzip_filter_module.c
@@ -22,7 +22,7 @@ typedef struct {
     ngx_uint_t           http_version;
     ngx_uint_t           proxied;
 
-    int                  level;
+    ngx_int_t            level;
     size_t               wbits;
     size_t               memlevel;
     ssize_t              min_length;
@@ -509,7 +509,7 @@ ngx_http_gzip_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
         ctx->zstream.zfree = ngx_http_gzip_filter_free;
         ctx->zstream.opaque = ctx;
 
-        rc = deflateInit2(&ctx->zstream, conf->level, Z_DEFLATED,
+        rc = deflateInit2(&ctx->zstream, (int) conf->level, Z_DEFLATED,
                           -wbits, memlevel, Z_DEFAULT_STRATEGY);
 
         if (rc != Z_OK) {
diff --git a/src/http/modules/ngx_http_map_module.c b/src/http/modules/ngx_http_map_module.c
new file mode 100644
index 000000000..2769028d6
--- /dev/null
+++ b/src/http/modules/ngx_http_map_module.c
@@ -0,0 +1,637 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+#define NGX_HTTP_MAP_HASH       10007
+
+typedef struct {
+    ngx_uint_t                  hash_max_size;
+    ngx_uint_t                  hash_bucket_size;
+} ngx_http_map_conf_t;
+
+
+typedef struct {
+    ngx_pool_t                 *pool;
+
+    ngx_array_t                 keys;
+    ngx_array_t                *keys_hash;
+
+    ngx_array_t                 dns_wildcards;
+    ngx_array_t                *dns_hash;
+
+    ngx_array_t                *values_hash;
+
+    ngx_http_variable_value_t  *default_value;
+    ngx_uint_t                  hostnames;      /* unsigned  hostnames:1 */
+} ngx_http_map_conf_ctx_t;
+
+
+typedef struct {
+    ngx_hash_t                  hash;
+    ngx_hash_wildcard_t        *dns_wildcards;
+    ngx_int_t                   index;
+    ngx_http_variable_value_t  *default_value;
+    ngx_uint_t                  hostnames;      /* unsigned  hostnames:1 */
+} ngx_http_map_ctx_t;
+
+
+static int ngx_libc_cdecl ngx_http_map_cmp_dns_wildcards(const void *one,
+    const void *two);
+static void *ngx_http_map_create_conf(ngx_conf_t *cf);
+static char *ngx_http_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+static char *ngx_http_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf);
+
+
+static ngx_command_t  ngx_http_map_commands[] = {
+
+    { ngx_string("map"),
+      NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE2,
+      ngx_http_map_block,
+      NGX_HTTP_MAIN_CONF_OFFSET,
+      0,
+      NULL },
+
+    { ngx_string("map_hash_max_size"),
+      NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_MAIN_CONF_OFFSET,
+      offsetof(ngx_http_map_conf_t, hash_max_size),
+      NULL },
+
+    { ngx_string("map_hash_bucket_size"),
+      NGX_HTTP_MAIN_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_MAIN_CONF_OFFSET,
+      offsetof(ngx_http_map_conf_t, hash_bucket_size),
+      NULL },
+
+      ngx_null_command
+};
+
+
+static ngx_http_module_t  ngx_http_map_module_ctx = {
+    NULL,                                  /* preconfiguration */
+    NULL,                                  /* postconfiguration */
+
+    ngx_http_map_create_conf,              /* create main configuration */
+    NULL,                                  /* init main configuration */
+
+    NULL,                                  /* create server configuration */
+    NULL,                                  /* merge server configuration */
+
+    NULL,                                  /* create location configuration */
+    NULL                                   /* merge location configuration */
+};
+
+
+ngx_module_t  ngx_http_map_module = {
+    NGX_MODULE_V1,
+    &ngx_http_map_module_ctx,              /* module context */
+    ngx_http_map_commands,                 /* module directives */
+    NGX_HTTP_MODULE,                       /* module type */
+    NULL,                                  /* init master */
+    NULL,                                  /* init module */
+    NULL,                                  /* init process */
+    NULL,                                  /* init thread */
+    NULL,                                  /* exit thread */
+    NULL,                                  /* exit process */
+    NULL,                                  /* exit master */
+    NGX_MODULE_V1_PADDING
+};
+
+
+static ngx_int_t
+ngx_http_map_variable(ngx_http_request_t *r, ngx_http_variable_value_t *v,
+    uintptr_t data)
+{
+    ngx_http_map_ctx_t  *map = (ngx_http_map_ctx_t *) data;
+
+    size_t                      len;
+    u_char                     *name;
+    ngx_uint_t                  key, i;
+    ngx_http_variable_value_t  *vv, *value;
+
+    ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http map started");
+
+    vv = ngx_http_get_flushed_variable(r, map->index);
+
+    len = vv->len;
+
+    if (len && map->hostnames && vv->data[len - 1] == '.') {
+        len--;
+    }
+
+    if (len == 0) {
+        *v = *map->default_value;
+        return NGX_OK;
+    }
+
+    name = ngx_palloc(r->pool, len);
+    if (name == NULL) {
+        return NGX_ERROR;
+    }
+
+    key = 0;
+    for (i = 0; i < len; i++) {
+        name[i] = ngx_tolower(vv->data[i]);
+        key = ngx_hash(key, name[i]);
+    }
+
+    value = NULL;
+
+    if (map->hash.buckets) {
+        value = ngx_hash_find(&map->hash, key, name, len);
+    }
+
+    if (value) {
+        *v = *value;
+
+    } else {
+        if (map->dns_wildcards && map->dns_wildcards->hash.buckets) {
+            value = ngx_hash_find_wildcard(map->dns_wildcards, name, len);
+            if (value) {
+                *v = *value;
+
+            } else {
+                *v = *map->default_value;
+            }
+
+        } else {
+            *v = *map->default_value;
+        }
+    }
+
+    ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
+                   "http map: \"%V\" \"%V\"", vv, v);
+
+    return NGX_OK;
+}
+
+
+static void *
+ngx_http_map_create_conf(ngx_conf_t *cf)
+{
+    ngx_http_map_conf_t  *mcf;
+
+    mcf = ngx_palloc(cf->pool, sizeof(ngx_http_map_conf_t));
+    if (mcf == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    mcf->hash_max_size = NGX_CONF_UNSET_UINT;
+    mcf->hash_bucket_size = NGX_CONF_UNSET_UINT;
+
+    return mcf;
+}
+
+
+static char *
+ngx_http_map_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    ngx_http_map_conf_t  *mcf = conf;
+
+    char                      *rv;
+    ngx_str_t                 *value, name;
+    ngx_conf_t                 save;
+    ngx_pool_t                *pool;
+    ngx_hash_init_t            hash;
+    ngx_http_map_ctx_t        *map;
+    ngx_http_variable_t       *var;
+    ngx_http_map_conf_ctx_t    ctx;
+
+    if (mcf->hash_max_size == NGX_CONF_UNSET_UINT) {
+        mcf->hash_max_size = 2048;
+    }
+
+    if (mcf->hash_bucket_size == NGX_CONF_UNSET_UINT) {
+        mcf->hash_bucket_size = ngx_cacheline_size;
+
+    } else {
+        mcf->hash_bucket_size = ngx_align(mcf->hash_bucket_size,
+                                          ngx_cacheline_size);
+    }
+
+    map = ngx_pcalloc(cf->pool, sizeof(ngx_http_map_ctx_t));
+    if (map == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    value = cf->args->elts;
+
+    name = value[1];
+    name.len--;
+    name.data++;
+
+    map->index = ngx_http_get_variable_index(cf, &name);
+
+    if (map->index == NGX_ERROR) {
+        return NGX_CONF_ERROR;
+    }
+
+    name = value[2];
+    name.len--;
+    name.data++;
+
+    var = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGABLE);
+    if (var == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    var->handler = ngx_http_map_variable;
+    var->data = (uintptr_t) map;
+
+    pool = ngx_create_pool(16384, cf->log);
+    if (pool == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    if (ngx_array_init(&ctx.keys, pool, 16384, sizeof(ngx_hash_key_t))
+        != NGX_OK)
+    {
+        ngx_destroy_pool(pool);
+        return NGX_CONF_ERROR;
+    }
+
+    if (ngx_array_init(&ctx.dns_wildcards, pool, 16384, sizeof(ngx_hash_key_t))
+        != NGX_OK)
+    {
+        ngx_destroy_pool(pool);
+        return NGX_CONF_ERROR;
+    }
+
+    ctx.keys_hash = ngx_pcalloc(pool, sizeof(ngx_array_t) * NGX_HTTP_MAP_HASH);
+    if (ctx.keys_hash == NULL) {
+        ngx_destroy_pool(pool);
+        return NGX_CONF_ERROR;
+    }
+
+    ctx.dns_hash = ngx_pcalloc(pool, sizeof(ngx_array_t) * NGX_HTTP_MAP_HASH);
+    if (ctx.dns_hash == NULL) {
+        ngx_destroy_pool(pool);
+        return NGX_CONF_ERROR;
+    }
+
+    ctx.values_hash = ngx_pcalloc(pool,
+                                  sizeof(ngx_array_t) * NGX_HTTP_MAP_HASH);
+    if (ctx.values_hash == NULL) {
+        ngx_destroy_pool(pool);
+        return NGX_CONF_ERROR;
+    }
+
+    ctx.pool = cf->pool;
+    ctx.default_value = NULL;
+    ctx.hostnames = 0;
+
+    save = *cf;
+    cf->pool = pool;
+    cf->ctx = &ctx;
+    cf->handler = ngx_http_map;
+    cf->handler_conf = conf;
+
+    rv = ngx_conf_parse(cf, NULL);
+
+    *cf = save;
+
+    if (rv != NGX_CONF_OK) {
+        ngx_destroy_pool(pool);
+
+        return rv;
+    }
+
+    hash.key = ngx_hash_key_lc;
+    hash.max_size = mcf->hash_max_size;
+    hash.bucket_size = mcf->hash_bucket_size;
+    hash.name = "map_hash";
+    hash.pool = cf->pool;
+
+    if (ctx.keys.nelts) {
+        hash.hash = &map->hash;
+        hash.temp_pool = NULL;
+
+        if (ngx_hash_init(&hash, ctx.keys.elts, ctx.keys.nelts) != NGX_OK) {
+            return NGX_CONF_ERROR;
+        }
+    }
+
+    map->default_value = ctx.default_value ? ctx.default_value:
+                                             &ngx_http_variable_null_value;
+
+    if (ctx.dns_wildcards.nelts) {
+
+        ngx_qsort(ctx.dns_wildcards.elts, (size_t) ctx.dns_wildcards.nelts,
+                  sizeof(ngx_hash_key_t), ngx_http_map_cmp_dns_wildcards);
+
+        hash.hash = NULL;
+        hash.temp_pool = pool;
+
+        if (ngx_hash_wildcard_init(&hash, ctx.dns_wildcards.elts,
+                                   ctx.dns_wildcards.nelts)
+            != NGX_OK)
+        {
+            return NGX_CONF_ERROR;
+        }
+
+        map->dns_wildcards = (ngx_hash_wildcard_t *) hash.hash;
+    }
+
+    ngx_destroy_pool(pool);
+
+    return rv;
+}
+
+
+static int ngx_libc_cdecl
+ngx_http_map_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_strcmp(first->key.data, second->key.data);
+}
+
+
+static char *
+ngx_http_map(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
+{
+    size_t                      len;
+    ngx_str_t                  *value, file, *name;
+    ngx_uint_t                  i, n, key;
+    ngx_hash_key_t             *m;
+    ngx_http_map_conf_ctx_t    *ctx;
+    ngx_http_variable_value_t  *var, *old, **vp;
+    u_char                      buf[2048];
+
+    ctx = cf->ctx;
+
+    value = cf->args->elts;
+
+    if (cf->args->nelts == 1
+        && ngx_strcmp(value[0].data, "hostnames") == 0)
+    {
+        ctx->hostnames = 1;
+        return NGX_CONF_OK;
+
+    } else if (cf->args->nelts != 2) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "invalid number of the map parameters");
+        return NGX_CONF_ERROR;
+
+    } else if (value[0].len == 0) {
+        ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                           "invalid first parameter");
+        return NGX_CONF_ERROR;
+    }
+
+    if (ngx_strcmp(value[0].data, "include") == 0) {
+        file = value[1];
+
+        if (ngx_conf_full_name(cf->cycle, &file) == NGX_ERROR){
+            return NGX_CONF_ERROR;
+        }
+
+        ngx_log_debug1(NGX_LOG_DEBUG_CORE, cf->log, 0, "include %s", file.data);
+
+        return ngx_conf_parse(cf, &file);
+    }
+
+    key = 0;
+
+    for (i = 0; i < value[1].len; i++) {
+        key = ngx_hash(key, value[1].data[i]);
+    }
+
+    key %= NGX_HTTP_MAP_HASH;
+
+    vp = ctx->values_hash[key].elts;
+
+    if (vp) {
+        for (i = 0; i < ctx->values_hash[key].nelts; i++) {
+            if (value[1].len != (size_t) vp[i]->len) {
+                continue;
+            }
+
+            if (ngx_strncmp(value[1].data, vp[i]->data, value[1].len) == 0) {
+                var = vp[i];
+                goto found;
+            }
+        }
+
+    } else {
+        if (ngx_array_init(&ctx->values_hash[key], cf->pool, 4,
+                           sizeof(ngx_http_variable_value_t *))
+            != NGX_OK)
+        {
+            return NGX_CONF_ERROR;
+        }
+    }
+
+    var = ngx_palloc(ctx->pool, sizeof(ngx_http_variable_value_t));
+    if (var == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    var->len = value[1].len;
+    var->data = ngx_pstrdup(ctx->pool, &value[1]);
+    if (var->data == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    var->valid = 1;
+    var->no_cachable = 0;
+    var->not_found = 0;
+
+    vp = ngx_array_push(&ctx->values_hash[key]);
+    if (vp == NULL) {
+        return NGX_CONF_ERROR;
+    }
+
+    *vp = var;
+
+found:
+
+    if (value[0].data[0] != '*' || ctx->hostnames == 0) {
+
+        if (ngx_strcmp(value[0].data, "default") != 0) {
+
+            if (value[0].len && value[0].data[0] == '!') {
+                value[0].len--;
+                value[0].data++;
+            }
+
+            key = 0;
+
+            for (i = 0; i < value[0].len; i++) {
+                value[0].data[i] = ngx_tolower(value[0].data[i]);
+                key = ngx_hash(key, value[0].data[i]);
+            }
+
+            key %= NGX_HTTP_MAP_HASH;
+
+            name = ctx->keys_hash[key].elts;
+
+            if (name) {
+                for (i = 0; i < ctx->keys_hash[key].nelts; i++) {
+                    if (value[0].len != name[i].len) {
+                        continue;
+                    }
+
+                    if (ngx_strncmp(value[0].data, name[i].data, value[0].len)
+                        == 0)
+                    {
+                        m = ctx->keys.elts;
+                        for (i = 0; i < ctx->keys.nelts; i++) {
+                            if (ngx_strcmp(value[0].data, m[i].key.data) == 0) {
+                                old = m[i].value;
+                                m[i].value = var;
+
+                                goto duplicate;
+                            }
+                        }
+                    }
+                }
+
+            } else {
+                if (ngx_array_init(&ctx->keys_hash[key], cf->pool, 4,
+                                   sizeof(ngx_str_t))
+                    != NGX_OK)
+                {
+                    return NGX_CONF_ERROR;
+                }
+            }
+
+            name = ngx_array_push(&ctx->keys_hash[key]);
+            if (name == NULL) {
+                return NGX_CONF_ERROR;
+            }
+
+            *name = value[0];
+
+            m = ngx_array_push(&ctx->keys);
+            if (m == NULL) {
+                return NGX_CONF_ERROR;
+            }
+
+            m->key = value[0];
+            m->key_hash = ngx_hash_key(value[0].data, value[0].len);
+            m->value = var;
+
+        } else {
+            if (ctx->default_value) {
+                old = ctx->default_value;
+                ctx->default_value = var;
+
+                goto duplicate;
+            }
+
+            ctx->default_value = var;
+        }
+
+    } else {
+
+        if (value[0].len < 3 || value[0].data[1] != '.') {
+            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                               "invalid DNS wildcard \"%V\"", &value[0]);
+            return NGX_CONF_ERROR;
+        }
+
+        key = 0;
+
+        for (i = 2; i < value[0].len; i++) {
+            value[0].data[i] = ngx_tolower(value[0].data[i]);
+            key = ngx_hash(key, value[0].data[i]);
+        }
+
+        key %= NGX_HTTP_MAP_HASH;
+
+        /* convert "*.example.com" into "com.example.\0" */
+
+        len = 0;
+        n = 0;
+
+        for (i = value[0].len - 1; i; i--) {
+            if (value[0].data[i] == '.') {
+                ngx_memcpy(&buf[n], &value[0].data[i + 1], len);
+                n += len;
+                buf[n++] = '.';
+                len = 0;
+                continue;
+            }
+
+            len++;
+        }
+
+        buf[n] = '\0';
+
+        name = ctx->dns_hash[key].elts;
+
+        if (name) {
+            for (i = 0; i < ctx->dns_hash[key].nelts; i++) {
+                if (value[0].len != name[i].len) {
+                    continue;
+                }
+
+                if (ngx_strncmp(value[0].data, name[i].data, value[0].len)
+                    == 0)
+                {
+                    m = ctx->dns_wildcards.elts;
+                    for (i = 0; i < ctx->dns_wildcards.nelts; i++) {
+                        if (ngx_strcmp(buf, m[i].key.data) == 0) {
+                            old = m[i].value;
+                            m[i].value = var;
+
+                            goto duplicate;
+                        }
+                    }
+                }
+            }
+
+        } else {
+            if (ngx_array_init(&ctx->dns_hash[key], cf->pool, 4,
+                               sizeof(ngx_str_t))
+                != NGX_OK)
+            {
+                return NGX_CONF_ERROR;
+            }
+        }
+
+        name = ngx_array_push(&ctx->dns_hash[key]);
+        if (name == NULL) {
+            return NGX_CONF_ERROR;
+        }
+
+        *name = value[0];
+
+        ngx_memcpy(value[0].data, buf, value[0].len);
+        value[0].len--;
+
+        m = ngx_array_push(&ctx->dns_wildcards);
+        if (m == NULL) {
+            return NGX_CONF_ERROR;
+        }
+
+        m->key = value[0];
+        m->key_hash = 0;
+        m->value = var;
+    }
+
+    return NGX_CONF_OK;
+
+duplicate:
+
+    ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
+                       "duplicate parameter \"%V\", value: \"%V\", "
+                       "old value: \"%V\"",
+                       &value[0], var, old);
+
+    return NGX_CONF_OK;
+}
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index afadc18ce..c39f32065 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -42,7 +42,7 @@ typedef struct {
     ngx_array_t                 *body_set;
     ngx_array_t                 *headers_set_len;
     ngx_array_t                 *headers_set;
-    ngx_hash_t                  *headers_set_hash;
+    ngx_hash0_t                 *headers_set_hash;
 
     ngx_array_t                 *headers_source;
     ngx_array_t                 *headers_names;
@@ -1892,7 +1892,7 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
     *code = (uintptr_t) NULL;
 
 
-    conf->headers_set_hash = ngx_pcalloc(cf->pool, sizeof(ngx_hash_t));
+    conf->headers_set_hash = ngx_pcalloc(cf->pool, sizeof(ngx_hash0_t));
     if (conf->headers_set_hash == NULL) {
         return NGX_CONF_ERROR;
     }
@@ -1902,8 +1902,9 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
     conf->headers_set_hash->bucket_size = sizeof(ngx_str_t);
     conf->headers_set_hash->name = "proxy_headers";
 
-    if (ngx_hash_init(conf->headers_set_hash, cf->pool,
-              conf->headers_names->elts, conf->headers_names->nelts) != NGX_OK)
+    if (ngx_hash0_init(conf->headers_set_hash, cf->pool,
+                       conf->headers_names->elts, conf->headers_names->nelts)
+        != NGX_OK)
     {
         return NGX_CONF_ERROR;
     }
diff --git a/src/http/modules/ngx_http_ssi_filter_module.c b/src/http/modules/ngx_http_ssi_filter_module.c
index dd0e92fcd..c984f7e9e 100644
--- a/src/http/modules/ngx_http_ssi_filter_module.c
+++ b/src/http/modules/ngx_http_ssi_filter_module.c
@@ -186,6 +186,13 @@ static ngx_command_t  ngx_http_ssi_filter_commands[] = {
       offsetof(ngx_http_ssi_conf_t, min_file_chunk),
       NULL },
 
+    { ngx_string("ssi_value_length"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_size_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_ssi_conf_t, value_len),
+      NULL },
+
     { ngx_string("ssi_types"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE,
       ngx_http_ssi_types,
@@ -1728,7 +1735,13 @@ ngx_http_ssi_config(ngx_http_request_t *r, ngx_http_ssi_ctx_t *ctx,
     value = params[NGX_HTTP_SSI_CONFIG_TIMEFMT];
 
     if (value) {
-        ctx->timefmt = *value;
+        ctx->timefmt.len = value->len;
+        ctx->timefmt.data = ngx_palloc(r->pool, value->len + 1);
+        if (ctx->timefmt.data == NULL) {
+            return NGX_HTTP_SSI_ERROR;
+        }
+
+        ngx_cpystrn(ctx->timefmt.data, value->data, value->len + 1);
     }
 
     value = params[NGX_HTTP_SSI_CONFIG_ERRMSG];
diff --git a/src/http/ngx_http.c b/src/http/ngx_http.c
index 023899870..449a4e9bd 100644
--- a/src/http/ngx_http.c
+++ b/src/http/ngx_http.c
@@ -371,7 +371,7 @@ ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
     cmcf->headers_in_hash.bucket_size = sizeof(ngx_http_header_t);
     cmcf->headers_in_hash.name = "http headers_in";
 
-    if (ngx_hash_init(&cmcf->headers_in_hash, cf->pool, ngx_http_headers_in, 0)
+    if (ngx_hash0_init(&cmcf->headers_in_hash, cf->pool, ngx_http_headers_in, 0)
         != NGX_OK)
     {
         return NGX_CONF_ERROR;
@@ -770,10 +770,10 @@ ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
         }
     }
 
-#if (NGX_DEBUG0)
+#if 0
     {
     u_char      address[20];
-    ngx_uint_t  p, a, nn;
+    ngx_uint_t  p, a;
 
     in_port = in_ports.elts;
     for (p = 0; p < in_ports.nelts; p++) {
diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
index c100bee75..e42023b1f 100644
--- a/src/http/ngx_http_core_module.c
+++ b/src/http/ngx_http_core_module.c
@@ -164,6 +164,20 @@ static ngx_command_t  ngx_http_core_commands[] = {
       0,
       NULL },
 
+    { ngx_string("types_hash_max_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_core_loc_conf_t, types_hash_max_size),
+      NULL },
+
+    { ngx_string("types_hash_bucket_size"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_conf_set_num_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_core_loc_conf_t, types_hash_bucket_size),
+      NULL },
+
     { ngx_string("types"),
       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF
                                           |NGX_CONF_BLOCK|NGX_CONF_NOARGS,
@@ -849,9 +863,8 @@ ngx_int_t
 ngx_http_set_content_type(ngx_http_request_t *r)
 {
     u_char                     c, *p, *exten;
-    uint32_t                   key;
+    ngx_str_t                 *type;
     ngx_uint_t                 i;
-    ngx_http_type_t           *type;
     ngx_http_core_loc_conf_t  *clcf;
 
     clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
@@ -876,11 +889,7 @@ ngx_http_set_content_type(ngx_http_request_t *r)
 
                 for (i = 0; i < r->exten.len; i++) {
                     c = r->exten.data[i];
-                    if (c >= 'A' && c <= 'Z') {
-                        *p++ = (u_char) (c | 0x20);
-                    } else {
-                        *p++ = c;
-                    }
+                    *p++ = ngx_tolower(c);
                 }
 
                 r->exten.data = exten;
@@ -889,26 +898,17 @@ ngx_http_set_content_type(ngx_http_request_t *r)
             r->low_case_exten = 1;
         }
 
-        ngx_http_types_hash_key(key, r->exten);
-
-        type = clcf->types[key].elts;
-        for (i = 0; i < clcf->types[key].nelts; i++) {
-            if (r->exten.len != type[i].exten.len) {
-                continue;
-            }
+        type = ngx_hash_find(&clcf->types_hash,
+                             ngx_hash_key(r->exten.data, r->exten.len),
+                             r->exten.data, r->exten.len);
 
-            if (ngx_memcmp(r->exten.data, type[i].exten.data, r->exten.len)
-                                                                           == 0)
-            {
-                r->headers_out.content_type = type[i].type;
-                break;
-            }
+        if (type) {
+            r->headers_out.content_type = *type;
+            return NGX_OK;
         }
     }
 
-    if (r->headers_out.content_type.len == 0) {
-        r->headers_out.content_type= clcf->default_type;
-    }
+    r->headers_out.content_type = clcf->default_type;
 
     return NGX_OK;
 }
@@ -1636,39 +1636,55 @@ ngx_http_core_type(ngx_conf_t *cf, ngx_command_t *dummy, void *conf)
 {
     ngx_http_core_loc_conf_t *lcf = conf;
 
-    uint32_t          key;
-    ngx_uint_t        i;
-    ngx_str_t        *value;
-    ngx_http_type_t  *type;
+    ngx_str_t       *value, *content_type, *old;
+    ngx_uint_t       i, n;
+    ngx_hash_key_t  *type;
 
     if (lcf->types == NULL) {
-        lcf->types = ngx_palloc(cf->pool, NGX_HTTP_TYPES_HASH_PRIME
-                                                        * sizeof(ngx_array_t));
+        lcf->types = ngx_array_create(cf->pool, 64, sizeof(ngx_hash_key_t));
         if (lcf->types == NULL) {
             return NGX_CONF_ERROR;
         }
+    }
 
-        for (i = 0; i < NGX_HTTP_TYPES_HASH_PRIME; i++) {
-            if (ngx_array_init(&lcf->types[i], cf->pool, 4,
-                                         sizeof(ngx_http_type_t)) == NGX_ERROR)
-            {
-                return NGX_CONF_ERROR;
-            }
-        }
+    content_type = ngx_palloc(cf->pool, sizeof(ngx_str_t));
+    if (content_type == NULL) {
+        return NGX_CONF_ERROR;
     }
 
     value = cf->args->elts;
+    *content_type = value[0];
 
     for (i = 1; i < cf->args->nelts; i++) {
-        ngx_http_types_hash_key(key, value[i]);
 
-        type = ngx_array_push(&lcf->types[key]);
+        for (n = 0; n < value[i].len; n++) {
+            value[i].data[n] = ngx_tolower(value[i].data[n]);
+        }
+
+        type = lcf->types->elts;
+        for (n = 0; n < lcf->types->nelts; n++) {
+            if (ngx_strcmp(value[i].data, type[n].key.data) == 0) {
+                old = type[n].value;
+                type[n].value = content_type;
+
+                ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
+                                   "duplicate extention \"%V\", "
+                                   "content type: \"%V\", "
+                                   "old content type: \"%V\"",
+                                   &value[i], content_type, old);
+                continue;
+            }
+        }
+
+
+        type = ngx_array_push(lcf->types);
         if (type == NULL) {
             return NGX_CONF_ERROR;
         }
 
-        type->exten = value[i];
-        type->type = value[0];
+        type->key = value[i];
+        type->key_hash = ngx_hash_key(value[i].data, value[i].len);
+        type->value = content_type;
     }
 
     return NGX_CONF_OK;
@@ -1905,29 +1921,34 @@ ngx_http_core_create_loc_conf(ngx_conf_t *cf)
     lcf->port_in_redirect = NGX_CONF_UNSET;
     lcf->msie_padding = NGX_CONF_UNSET;
     lcf->log_not_found = NGX_CONF_UNSET;
+    lcf->types_hash_max_size = NGX_CONF_UNSET_UINT;
+    lcf->types_hash_bucket_size = NGX_CONF_UNSET_UINT;
 
     return lcf;
 }
 
 
-static ngx_http_type_t ngx_http_core_default_types[] = {
-    { ngx_string("html"), ngx_string("text/html") },
-    { ngx_string("gif"), ngx_string("image/gif") },
-    { ngx_string("jpg"), ngx_string("image/jpeg") },
-    { ngx_null_string, ngx_null_string }
+static ngx_str_t  ngx_http_core_text_html_type = ngx_string("text/html");
+static ngx_str_t  ngx_http_core_image_gif_type = ngx_string("image/gif");
+static ngx_str_t  ngx_http_core_image_jpeg_type = ngx_string("image/jpeg");
+
+static ngx_hash_key_t  ngx_http_core_default_types[] = {
+    { ngx_string("html"), 0, &ngx_http_core_text_html_type },
+    { ngx_string("gif"), 0, &ngx_http_core_image_gif_type },
+    { ngx_string("jpg"), 0, &ngx_http_core_image_jpeg_type },
+    { ngx_null_string, 0, NULL }
 };
 
 
 static char *
-ngx_http_core_merge_loc_conf(ngx_conf_t *cf,
-                                          void *parent, void *child)
+ngx_http_core_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
 {
     ngx_http_core_loc_conf_t *prev = parent;
     ngx_http_core_loc_conf_t *conf = child;
 
-    uint32_t          key;
     ngx_uint_t        i;
-    ngx_http_type_t  *type;
+    ngx_hash_key_t   *type;
+    ngx_hash_init_t   types_hash;
 
     ngx_conf_merge_str_value(conf->root, prev->root, "html");
 
@@ -1939,36 +1960,77 @@ ngx_http_core_merge_loc_conf(ngx_conf_t *cf,
         conf->post_action = prev->post_action;
     }
 
+    ngx_conf_merge_unsigned_value(conf->types_hash_max_size,
+                                  prev->types_hash_max_size, 512);
+
+    ngx_conf_merge_unsigned_value(conf->types_hash_bucket_size,
+                                  prev->types_hash_bucket_size,
+                                  ngx_cacheline_size);
+
+    conf->types_hash_bucket_size = ngx_align(conf->types_hash_bucket_size,
+                                             ngx_cacheline_size);
+
+    /*
+     * the special handling the "types" directive in the "http" section
+     * to inherit the http's conf->types_hash to all servers
+     */
+
+    if (prev->types && prev->types_hash.buckets == NULL) {
+
+        types_hash.hash = &prev->types_hash;
+        types_hash.key = ngx_hash_key_lc;
+        types_hash.max_size = conf->types_hash_max_size;
+        types_hash.bucket_size = conf->types_hash_bucket_size;
+        types_hash.name = "mime_types";
+        types_hash.pool = cf->pool;
+        types_hash.temp_pool = NULL;
+
+        if (ngx_hash_init(&types_hash, prev->types->elts, prev->types->nelts)
+            != NGX_OK)
+        {
+            return NGX_CONF_ERROR;
+        }
+    }
+
     if (conf->types == NULL) {
-        if (prev->types) {
-            conf->types = prev->types;
+        conf->types = prev->types;
+        conf->types_hash = prev->types_hash;
+    }
 
-        } else {
-            conf->types = ngx_palloc(cf->pool, NGX_HTTP_TYPES_HASH_PRIME
-                                                        * sizeof(ngx_array_t));
-            if (conf->types == NULL) {
+    if (conf->types == NULL) {
+        conf->types = ngx_array_create(cf->pool, 4, sizeof(ngx_hash_key_t));
+        if (conf->types == NULL) {
+            return NGX_CONF_ERROR;
+        }
+
+        for (i = 0; ngx_http_core_default_types[i].key.len; i++) {
+            type = ngx_array_push(conf->types);
+            if (type == NULL) {
                 return NGX_CONF_ERROR;
             }
 
-            for (i = 0; i < NGX_HTTP_TYPES_HASH_PRIME; i++) {
-                if (ngx_array_init(&conf->types[i], cf->pool, 4,
-                                   sizeof(ngx_http_type_t)) == NGX_ERROR)
-                {
-                    return NGX_CONF_ERROR;
-                }
-            }
+            type->key = ngx_http_core_default_types[i].key;
+            type->key_hash =
+                       ngx_hash_key_lc(ngx_http_core_default_types[i].key.data,
+                                       ngx_http_core_default_types[i].key.len);
+            type->value = ngx_http_core_default_types[i].value;
+        }
+    }
 
-            for (i = 0; ngx_http_core_default_types[i].exten.len; i++) {
-                ngx_http_types_hash_key(key,
-                                        ngx_http_core_default_types[i].exten);
+    if (conf->types_hash.buckets == NULL) {
 
-                type = ngx_array_push(&conf->types[key]);
-                if (type == NULL) {
-                    return NGX_CONF_ERROR;
-                }
+        types_hash.hash = &conf->types_hash;
+        types_hash.key = ngx_hash_key_lc;
+        types_hash.max_size = conf->types_hash_max_size;
+        types_hash.bucket_size = conf->types_hash_bucket_size;
+        types_hash.name = "mime_types";
+        types_hash.pool = cf->pool;
+        types_hash.temp_pool = NULL;
 
-                *type = ngx_http_core_default_types[i];
-            }
+        if (ngx_hash_init(&types_hash, conf->types->elts, conf->types->nelts)
+            != NGX_OK)
+        {
+            return NGX_CONF_ERROR;
         }
     }
 
@@ -2115,6 +2177,7 @@ ngx_http_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
     if (ngx_strcmp(value[2].data, "default") == 0) {
         ls->conf.default_server = 1;
         n = 3;
+
     } else {
         n = 2;
     }
diff --git a/src/http/ngx_http_core_module.h b/src/http/ngx_http_core_module.h
index e9c994dd1..0d8ae74c3 100644
--- a/src/http/ngx_http_core_module.h
+++ b/src/http/ngx_http_core_module.h
@@ -70,8 +70,8 @@ typedef struct {
 
     ngx_http_phase_t           phases[NGX_HTTP_LOG_PHASE + 1];
 
-    ngx_hash_t                 headers_in_hash;
-    ngx_hash_t                 variables_hash;
+    ngx_hash0_t                headers_in_hash;
+    ngx_hash0_t                variables_hash;
 
     ngx_uint_t                 server_names_hash;
     ngx_uint_t                 server_names_hash_threshold;
@@ -154,23 +154,6 @@ typedef struct {
         }
 
 
-#define NGX_HTTP_TYPES_HASH_PRIME  13
-
-#define ngx_http_types_hash_key(key, ext)                                   \
-        {                                                                   \
-            ngx_uint_t  n;                                                  \
-            for (key = 0, n = 0; n < ext.len; n++) {                        \
-                key += ext.data[n];                                         \
-            }                                                               \
-            key %= NGX_HTTP_TYPES_HASH_PRIME;                               \
-        }
-
-typedef struct {
-    ngx_str_t     exten;
-    ngx_str_t     type;
-} ngx_http_type_t;
-
-
 typedef struct {
     ngx_int_t     status;
     ngx_int_t     overwrite;
@@ -203,12 +186,13 @@ struct ngx_http_core_loc_conf_s {
 
     ngx_http_handler_pt  handler;
 
-    ngx_array_t  *types;
-    ngx_str_t     default_type;
-
     ngx_str_t     root;                    /* root, alias */
     ngx_str_t     post_action;
 
+    ngx_array_t  *types;
+    ngx_hash_t    types_hash;
+    ngx_str_t     default_type;
+
     size_t        client_max_body_size;    /* client_max_body_size */
     size_t        client_body_buffer_size; /* client_body_buffer_size */
     size_t        send_lowat;              /* send_lowat */
@@ -241,6 +225,9 @@ struct ngx_http_core_loc_conf_s {
 
     ngx_log_t    *err_log;
 
+    ngx_uint_t    types_hash_max_size;
+    ngx_uint_t    types_hash_bucket_size;
+
 #if 0
     ngx_http_core_loc_conf_t  *prev_location;
 #endif
diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index c6d6d6fc2..ba93c0df3 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -1561,6 +1561,10 @@ ngx_http_finalize_request(ngx_http_request_t *r, ngx_int_t rc)
         ngx_del_timer(r->connection->write);
     }
 
+    if (r->connection->destroyed) {
+        return;
+    }
+
 #if 0
     if (r->connection->read->pending_eof) {
 #if (NGX_HAVE_KQUEUE)
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
index cfaca6e13..fc57fe47b 100644
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2541,7 +2541,7 @@ ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
     umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
     umcf->headers_in_hash.name = "upstream_headers_in";
 
-    if (ngx_hash_init(&umcf->headers_in_hash, cf->pool,
+    if (ngx_hash0_init(&umcf->headers_in_hash, cf->pool,
                       ngx_http_upstream_headers_in, 0) != NGX_OK)
     {
         return NGX_CONF_ERROR;
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
index 203265970..1b4795a31 100644
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -40,7 +40,7 @@ typedef struct {
 
 
 typedef struct {
-    ngx_hash_t                      headers_in_hash;
+    ngx_hash0_t                     headers_in_hash;
 } ngx_http_upstream_main_conf_t;
 
 
diff --git a/src/http/ngx_http_variables.c b/src/http/ngx_http_variables.c
index 6e831b5b0..93080abd4 100644
--- a/src/http/ngx_http_variables.c
+++ b/src/http/ngx_http_variables.c
@@ -116,6 +116,10 @@ static ngx_http_variable_t  ngx_http_core_variables[] = {
       offsetof(ngx_http_request_t, args),
       NGX_HTTP_VAR_NOCACHABLE, 0 },
 
+    { ngx_string("args"), ngx_http_variable_request,
+      offsetof(ngx_http_request_t, args),
+      NGX_HTTP_VAR_NOCACHABLE, 0 },
+
     { ngx_string("request_filename"), ngx_http_variable_request_filename, 0,
       NGX_HTTP_VAR_NOCACHABLE, 0 },
 
@@ -857,7 +861,7 @@ ngx_http_variables_init_vars(ngx_conf_t *cf)
     cmcf->variables_hash.bucket_size = sizeof(ngx_http_variable_t);
     cmcf->variables_hash.name = "http variables";
 
-    if (ngx_hash_init(&cmcf->variables_hash, cf->pool,
+    if (ngx_hash0_init(&cmcf->variables_hash, cf->pool,
                       cmcf->all_variables.elts, cmcf->all_variables.nelts)
         != NGX_OK)
     {