diff -uNpr nginx-0.3.53.orig/src/http/modules/ngx_http_gzip_filter_module.c nginx-0.3.53/src/http/modules/ngx_http_gzip_filter_module.c

--- nginx-0.3.53.orig/src/http/modules/ngx_http_gzip_filter_module.c	2006-07-07 00:50:33 +0400

+++ nginx-0.3.53/src/http/modules/ngx_http_gzip_filter_module.c	2006-07-12 02:24:40 +0400

@@ -14,6 +14,7 @@

 typedef struct {

     ngx_flag_t           enable;

     ngx_flag_t           no_buffer;

+    ngx_flag_t		 vary;

     ngx_array_t         *types;     /* array of ngx_str_t */

@@ -132,6 +133,14 @@ static ngx_command_t  ngx_http_gzip_filt

       offsetof(ngx_http_gzip_conf_t, enable),

       NULL },

+    { ngx_string("gzip_vary"),

+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF

+                        |NGX_CONF_FLAG,

+      ngx_conf_set_flag_slot,

+      NGX_HTTP_LOC_CONF_OFFSET,

+      offsetof(ngx_http_gzip_conf_t, vary),

+      NULL },

+    

     { ngx_string("gzip_buffers"),

       NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2,

       ngx_conf_set_bufs_slot,

@@ -350,14 +359,30 @@ found:

         return NGX_ERROR;

     }

+    if (conf->vary) {

+	r->headers_out.accept_encoding = ngx_list_push(&r->headers_out.headers);

+	if (r->headers_out.accept_encoding == NULL) {

+	    return NGX_ERROR;

+	}

+    }

+    

     r->headers_out.content_encoding->hash = 1;

     r->headers_out.content_encoding->key.len = sizeof("Content-Encoding") - 1;

     r->headers_out.content_encoding->key.data = (u_char *) "Content-Encoding";

     r->headers_out.content_encoding->value.len = sizeof("gzip") - 1;

     r->headers_out.content_encoding->value.data = (u_char *) "gzip";

-

+    if (conf->vary) {

+	r->headers_out.accept_encoding->hash = 1;

+	r->headers_out.accept_encoding->key.len = sizeof("Accept-Encoding") - 1;

+	r->headers_out.accept_encoding->key.data = (u_char *) "Accept-Encoding";

+	r->headers_out.accept_encoding->value.len = sizeof("Vary") - 1;

+	r->headers_out.accept_encoding->value.data = (u_char *) "Vary";

+    }

+    

     ctx->length = r->headers_out.content_length_n;

+    

+    

     r->main_filter_need_in_memory = 1;

     ngx_http_clear_content_length(r);

@@ -1062,6 +1087,7 @@ ngx_http_gzip_create_conf(ngx_conf_t *cf

      */

     conf->enable = NGX_CONF_UNSET;

+    conf->vary = NGX_CONF_UNSET;

     conf->no_buffer = NGX_CONF_UNSET;

     conf->http_version = NGX_CONF_UNSET_UINT;

@@ -1085,6 +1111,8 @@ ngx_http_gzip_merge_conf(ngx_conf_t *cf,

     ngx_conf_merge_value(conf->enable, prev->enable, 0);

+    ngx_conf_merge_value(conf->vary, prev->vary, 0);

+

     ngx_conf_merge_bufs_value(conf->bufs, prev->bufs, 4, ngx_pagesize);

     ngx_conf_merge_uint_value(conf->http_version, prev->http_version,

diff -uNpr nginx-0.3.53.orig/src/http/ngx_http_header_filter_module.c nginx-0.3.53/src/http/ngx_http_header_filter_module.c

--- nginx-0.3.53.orig/src/http/ngx_http_header_filter_module.c	2006-07-04 14:40:15 +0400

+++ nginx-0.3.53/src/http/ngx_http_header_filter_module.c	2006-07-12 02:24:40 +0400

@@ -133,6 +133,8 @@ ngx_http_header_out_t  ngx_http_headers_

                  offsetof(ngx_http_headers_out_t, content_length) },

     { ngx_string("Content-Encoding"),

                  offsetof(ngx_http_headers_out_t, content_encoding) },

+    { ngx_string("Accept-Encoding"),

+                 offsetof(ngx_http_headers_out_t, accept_encoding) },

     { ngx_string("Location"), offsetof(ngx_http_headers_out_t, location) },

     { ngx_string("Last-Modified"),

                  offsetof(ngx_http_headers_out_t, last_modified) },

diff -uNpr nginx-0.3.53.orig/src/http/ngx_http_request.h nginx-0.3.53/src/http/ngx_http_request.h

--- nginx-0.3.53.orig/src/http/ngx_http_request.h	2006-07-07 17:27:40 +0400

+++ nginx-0.3.53/src/http/ngx_http_request.h	2006-07-12 02:25:08 +0400

@@ -229,6 +229,10 @@ typedef struct {

     ngx_table_elt_t                  *expires;

     ngx_table_elt_t                  *etag;

+#if (NGX_HTTP_GZIP)

+    ngx_table_elt_t		     *accept_encoding;

+#endif

+

     ngx_str_t                        *override_charset;

     size_t                            content_type_len;