Slice filter.

Splits a request into subrequests, each providing a specific range of response.
The variable "$slice_range" must be used to set subrequest range and proper
cache key.  The directive "slice" sets slice size.

The following example splits requests into 1-megabyte cacheable subrequests.

server {
    listen 8000;

    location / {
        slice 1m;

        proxy_cache cache;
        proxy_cache_key $uri$is_args$args$slice_range;
        proxy_set_header Range $slice_range;
        proxy_cache_valid 200 206 1h;
        proxy_pass http://127.0.0.1:9000;
    }
}

auto/modules

@@ -73,6 +73,11 @@ if [ $HTTP_SSI = YES ]; then
 fi
 
 
+if [ $HTTP_SLICE = YES ]; then
+    HTTP_POSTPONE=YES
+fi
+
+
 if [ $HTTP_ADDITION = YES ]; then
     HTTP_POSTPONE=YES
 fi
@@ -110,6 +115,7 @@ fi
 #     ngx_http_copy_filter
 #     ngx_http_range_body_filter
 #     ngx_http_not_modified_filter
+#     ngx_http_slice_filter
 
 HTTP_FILTER_MODULES="$HTTP_WRITE_FILTER_MODULE \
                      $HTTP_HEADER_FILTER_MODULE \
@@ -179,6 +185,12 @@ if [ $HTTP_USERID = YES ]; then
     HTTP_SRCS="$HTTP_SRCS $HTTP_USERID_SRCS"
 fi
 
+if [ $HTTP_SLICE = YES ]; then
+    HTTP_SRCS="$HTTP_SRCS $HTTP_SLICE_SRCS"
+else
+    HTTP_SLICE_FILTER_MODULE=""
+fi
+
 
 if [ $HTTP_V2 = YES ]; then
     have=NGX_HTTP_V2 . auto/have
@@ -461,7 +473,8 @@ if [ $HTTP = YES ]; then
              $HTTP_AUX_FILTER_MODULES \
              $HTTP_COPY_FILTER_MODULE \
              $HTTP_RANGE_BODY_FILTER_MODULE \
-             $HTTP_NOT_MODIFIED_FILTER_MODULE"
+             $HTTP_NOT_MODIFIED_FILTER_MODULE \
+             $HTTP_SLICE_FILTER_MODULE"
 
     NGX_ADDON_DEPS="$NGX_ADDON_DEPS \$(HTTP_DEPS)"
 fi

auto/options

@@ -71,6 +71,7 @@ HTTP_ACCESS=YES
 HTTP_AUTH_BASIC=YES
 HTTP_AUTH_REQUEST=NO
 HTTP_USERID=YES
+HTTP_SLICE=NO
 HTTP_AUTOINDEX=YES
 HTTP_RANDOM_INDEX=NO
 HTTP_STATUS=NO
@@ -226,6 +227,7 @@ do
         --with-http_random_index_module) HTTP_RANDOM_INDEX=YES      ;;
         --with-http_secure_link_module)  HTTP_SECURE_LINK=YES       ;;
         --with-http_degradation_module)  HTTP_DEGRADATION=YES       ;;
+        --with-http_slice_module)        HTTP_SLICE=YES             ;;
 
         --without-http_charset_module)   HTTP_CHARSET=NO            ;;
         --without-http_gzip_module)      HTTP_GZIP=NO               ;;
@@ -394,6 +396,7 @@ cat << END
   --with-http_random_index_module    enable ngx_http_random_index_module
   --with-http_secure_link_module     enable ngx_http_secure_link_module
   --with-http_degradation_module     enable ngx_http_degradation_module
+  --with-http_slice_module           enable ngx_http_slice_module
   --with-http_stub_status_module     enable ngx_http_stub_status_module
 
   --without-http_charset_module      disable ngx_http_charset_module

auto/sources

@@ -360,6 +360,10 @@ HTTP_USERID_FILTER_MODULE=ngx_http_userid_filter_module
 HTTP_USERID_SRCS=src/http/modules/ngx_http_userid_filter_module.c
 
 
+HTTP_SLICE_FILTER_MODULE=ngx_http_slice_filter_module
+HTTP_SLICE_SRCS=src/http/modules/ngx_http_slice_filter_module.c
+
+
 HTTP_REALIP_MODULE=ngx_http_realip_module
 HTTP_REALIP_SRCS=src/http/modules/ngx_http_realip_module.c