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;
    }
}

1 files changed, 2 insertions, 0 deletions

diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index 967032aa..8b881392 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -271,6 +271,7 @@ typedef struct {
     ngx_array_t                       cache_control;
 
     off_t                             content_length_n;
+    off_t                             content_offset;
     time_t                            date_time;
     time_t                            last_modified_time;
 } ngx_http_headers_out_t;
@@ -530,6 +531,7 @@ struct ngx_http_request_s {
     unsigned                          filter_need_in_memory:1;
     unsigned                          filter_need_temporary:1;
     unsigned                          allow_ranges:1;
+    unsigned                          subrequest_ranges:1;
     unsigned                          single_range:1;
     unsigned                          disable_not_modified:1;