new file mode 100644
--- /dev/null
+++ b/src/http/modules/ngx_http_headers_filter.c
@@ -0,0 +1,239 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_http.h>
+
+
+typedef struct {
+    time_t  expires;
+} ngx_http_headers_conf_t;
+
+
+#define NGX_HTTP_EXPIRES_UNSET   -2147483647
+#define NGX_HTTP_EXPIRES_OFF     -2147483646
+#define NGX_HTTP_EXPIRES_EPOCH   -2147483645
+
+
+static ngx_int_t ngx_http_headers_filter_init(ngx_cycle_t *cycle);
+static void *ngx_http_headers_create_conf(ngx_conf_t *cf);
+static char *ngx_http_headers_merge_conf(ngx_conf_t *cf,
+                                         void *parent, void *child);
+char *ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+
+
+static ngx_command_t  ngx_http_headers_filter_commands[] = {
+
+    { ngx_string("expires"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
+      ngx_http_headers_expires,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      0,
+      NULL},
+
+      ngx_null_command
+};
+
+
+static ngx_http_module_t  ngx_http_headers_filter_module_ctx = {
+    NULL,                                  /* pre conf */
+
+    NULL,                                  /* create main configuration */
+    NULL,                                  /* init main configuration */
+
+    NULL,                                  /* create server configuration */
+    NULL,                                  /* merge server configuration */
+
+    ngx_http_headers_create_conf,          /* create location configuration */
+    ngx_http_headers_merge_conf            /* merge location configuration */
+};
+
+
+ngx_module_t  ngx_http_headers_filter_module = {
+    NGX_MODULE,
+    &ngx_http_headers_filter_module_ctx,   /* module context */
+    ngx_http_headers_filter_commands,      /* module directives */
+    NGX_HTTP_MODULE,                       /* module type */
+    ngx_http_headers_filter_init,          /* init module */
+    NULL                                   /* init child */
+};
+
+
+static ngx_http_output_header_filter_pt  ngx_http_next_header_filter;
+
+
+static ngx_int_t ngx_http_headers_filter(ngx_http_request_t *r)
+{
+    size_t                    len;
+    ngx_table_elt_t          *expires, *cc;
+    ngx_http_headers_conf_t  *conf;
+
+    if (r->headers_out.status != NGX_HTTP_OK) {
+        return ngx_http_next_header_filter(r);
+    }
+
+    conf = ngx_http_get_module_loc_conf(r, ngx_http_headers_filter_module);
+
+    if (conf->expires != NGX_HTTP_EXPIRES_OFF) {
+
+        if (!(expires = ngx_list_push(&r->headers_out.headers))) {
+            return NGX_ERROR;
+        }
+
+        r->headers_out.expires = expires;
+
+        if (!(cc = ngx_list_push(&r->headers_out.headers))) {
+            return NGX_ERROR;
+        }
+
+        r->headers_out.cache_control = cc;
+
+        len = sizeof("Mon, 28 Sep 1970 06:00:00 GMT");
+
+        expires->key.len = sizeof("Expires") - 1;
+        expires->key.data = (u_char *) "Expires";
+        expires->value.len = len - 1;
+
+        cc->key.len = sizeof("Cache-Control") - 1;
+        cc->key.data = (u_char *) "Cache-Control";
+
+        if (conf->expires == NGX_HTTP_EXPIRES_EPOCH) {
+            expires->value.data = (u_char *) "Thu, 01 Jan 1970 00:00:01 GMT";
+
+            cc->value.len = sizeof("no-cache") - 1;
+            cc->value.data = (u_char *) "no-cache";
+
+        } else {
+            expires->value.data = ngx_palloc(r->pool, len);
+            if (expires->value.data == NULL) {
+                return NGX_ERROR;
+            }
+
+            if (conf->expires == 0) {
+                ngx_memcpy(expires->value.data, ngx_cached_http_time.data,
+                           ngx_cached_http_time.len + 1);
+
+                cc->value.len = sizeof("max-age=0") - 1;
+                cc->value.data = (u_char *) "max-age=0";
+
+            } else {
+                ngx_http_time(expires->value.data, ngx_time() + conf->expires);
+
+                if (conf->expires < 0) {
+                    cc->value.len = sizeof("no-cache") - 1;
+                    cc->value.data = (u_char *) "no-cache";
+
+                } else {
+                    cc->value.data = ngx_palloc(r->pool,
+                                          sizeof("max-age=") + TIME_T_LEN + 1);
+                    if (cc->value.data == NULL) {
+                        return NGX_ERROR;
+                    }
+
+                    cc->value.len = ngx_snprintf((char *) cc->value.data,
+                                               sizeof("max-age=") + TIME_T_LEN,
+                                               "max-age=" TIME_T_FMT,
+                                               conf->expires);
+                }
+            }
+        }
+    }
+
+    return ngx_http_next_header_filter(r);
+}
+
+
+static ngx_int_t ngx_http_headers_filter_init(ngx_cycle_t *cycle)
+{
+    ngx_http_next_header_filter = ngx_http_top_header_filter;
+    ngx_http_top_header_filter = ngx_http_headers_filter;
+
+    return NGX_OK;
+}
+
+
+static void *ngx_http_headers_create_conf(ngx_conf_t *cf)
+{   
+    ngx_http_headers_conf_t  *conf;
+
+    if (!(conf = ngx_palloc(cf->pool, sizeof(ngx_http_headers_conf_t)))) {
+        return NGX_CONF_ERROR;
+    }
+
+    conf->expires = NGX_HTTP_EXPIRES_UNSET;
+
+    return conf;
+}
+
+
+static char *ngx_http_headers_merge_conf(ngx_conf_t *cf,
+                                         void *parent, void *child)
+{
+    ngx_http_headers_conf_t *prev = parent;
+    ngx_http_headers_conf_t *conf = child;
+
+    if (conf->expires == NGX_HTTP_EXPIRES_UNSET) {
+        conf->expires = (prev->expires == NGX_HTTP_EXPIRES_UNSET) ?
+                                          NGX_HTTP_EXPIRES_OFF : prev->expires;
+    }
+
+    return NGX_CONF_OK;
+}
+
+
+char *ngx_http_headers_expires(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+    ngx_http_headers_conf_t *hcf = conf;
+
+    ngx_uint_t   minus;
+    ngx_str_t   *value;
+
+    if (hcf->expires != NGX_HTTP_EXPIRES_UNSET) {
+        return "is duplicate";
+    }
+
+    value = cf->args->elts;
+
+    if (ngx_strcmp(value[1].data, "epoch") == 0) {
+        hcf->expires = NGX_HTTP_EXPIRES_EPOCH;
+        return NGX_CONF_OK;
+    }
+
+    if (ngx_strcmp(value[1].data, "off") == 0) {
+        hcf->expires = NGX_HTTP_EXPIRES_OFF;
+        return NGX_CONF_OK;
+    }
+
+    if (value[1].data[0] == '+') {
+        value[1].data++;
+        value[1].len--;
+        minus = 0;
+
+    } else if (value[1].data[0] == '-') {
+        value[1].data++;
+        value[1].len--;
+        minus = 1;
+
+    } else {
+        minus = 0;
+    }
+
+    hcf->expires = ngx_parse_time(&value[1], 1);
+    if (hcf->expires == NGX_ERROR) {
+        return "invalid value";
+    }
+    
+    if (hcf->expires == NGX_PARSE_LARGE_TIME) {
+        return "value must be less than 68 years";
+    }
+
+    if (minus) {
+        hcf->expires = - hcf->expires;
+    }
+
+    return NGX_CONF_OK;
+}