# HG changeset patch
# User Roman Arutyunyan <arut@nginx.com>
# Date 1413297121 -14400
# Node ID 2aff40b3dea2a0fcfa80942e34753cb4d26f216b
# Parent  35b8e5e985083976ba62914fc5953dbd2a3b954b
Upstream: proxy_force_ranges and friends.

The directives enable byte ranges for both cached and uncached
responses regardless of backend headers.

diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -326,6 +326,13 @@ static ngx_command_t  ngx_http_fastcgi_c
       offsetof(ngx_http_fastcgi_loc_conf_t, upstream.busy_buffers_size_conf),
       NULL },
 
+    { ngx_string("fastcgi_force_ranges"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_fastcgi_loc_conf_t, upstream.force_ranges),
+      NULL },
+
 #if (NGX_HTTP_CACHE)
 
     { ngx_string("fastcgi_cache"),
@@ -2332,6 +2339,7 @@ ngx_http_fastcgi_create_loc_conf(ngx_con
     conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT;
     conf->upstream.buffering = NGX_CONF_UNSET;
     conf->upstream.ignore_client_abort = NGX_CONF_UNSET;
+    conf->upstream.force_ranges = NGX_CONF_UNSET;
 
     conf->upstream.local = NGX_CONF_UNSET_PTR;
 
@@ -2413,6 +2421,9 @@ ngx_http_fastcgi_merge_loc_conf(ngx_conf
     ngx_conf_merge_value(conf->upstream.ignore_client_abort,
                               prev->upstream.ignore_client_abort, 0);
 
+    ngx_conf_merge_value(conf->upstream.force_ranges,
+                              prev->upstream.force_ranges, 0);
+
     ngx_conf_merge_ptr_value(conf->upstream.local,
                               prev->upstream.local, NULL);
 
diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -389,6 +389,13 @@ static ngx_command_t  ngx_http_proxy_com
       offsetof(ngx_http_proxy_loc_conf_t, upstream.busy_buffers_size_conf),
       NULL },
 
+    { ngx_string("proxy_force_ranges"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_proxy_loc_conf_t, upstream.force_ranges),
+      NULL },
+
 #if (NGX_HTTP_CACHE)
 
     { ngx_string("proxy_cache"),
@@ -2472,6 +2479,7 @@ ngx_http_proxy_create_loc_conf(ngx_conf_
     conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT;
     conf->upstream.buffering = NGX_CONF_UNSET;
     conf->upstream.ignore_client_abort = NGX_CONF_UNSET;
+    conf->upstream.force_ranges = NGX_CONF_UNSET;
 
     conf->upstream.local = NGX_CONF_UNSET_PTR;
 
@@ -2568,6 +2576,9 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t
     ngx_conf_merge_value(conf->upstream.ignore_client_abort,
                               prev->upstream.ignore_client_abort, 0);
 
+    ngx_conf_merge_value(conf->upstream.force_ranges,
+                              prev->upstream.force_ranges, 0);
+
     ngx_conf_merge_ptr_value(conf->upstream.local,
                               prev->upstream.local, NULL);
 
diff --git a/src/http/modules/ngx_http_scgi_module.c b/src/http/modules/ngx_http_scgi_module.c
--- a/src/http/modules/ngx_http_scgi_module.c
+++ b/src/http/modules/ngx_http_scgi_module.c
@@ -183,6 +183,13 @@ static ngx_command_t ngx_http_scgi_comma
       offsetof(ngx_http_scgi_loc_conf_t, upstream.busy_buffers_size_conf),
       NULL },
 
+    { ngx_string("scgi_force_ranges"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_scgi_loc_conf_t, upstream.force_ranges),
+      NULL },
+
 #if (NGX_HTTP_CACHE)
 
     { ngx_string("scgi_cache"),
@@ -1091,6 +1098,7 @@ ngx_http_scgi_create_loc_conf(ngx_conf_t
     conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT;
     conf->upstream.buffering = NGX_CONF_UNSET;
     conf->upstream.ignore_client_abort = NGX_CONF_UNSET;
+    conf->upstream.force_ranges = NGX_CONF_UNSET;
 
     conf->upstream.local = NGX_CONF_UNSET_PTR;
 
@@ -1167,6 +1175,9 @@ ngx_http_scgi_merge_loc_conf(ngx_conf_t 
     ngx_conf_merge_value(conf->upstream.ignore_client_abort,
                               prev->upstream.ignore_client_abort, 0);
 
+    ngx_conf_merge_value(conf->upstream.force_ranges,
+                              prev->upstream.force_ranges, 0);
+
     ngx_conf_merge_ptr_value(conf->upstream.local,
                               prev->upstream.local, NULL);
 
diff --git a/src/http/modules/ngx_http_uwsgi_module.c b/src/http/modules/ngx_http_uwsgi_module.c
--- a/src/http/modules/ngx_http_uwsgi_module.c
+++ b/src/http/modules/ngx_http_uwsgi_module.c
@@ -238,6 +238,13 @@ static ngx_command_t ngx_http_uwsgi_comm
       offsetof(ngx_http_uwsgi_loc_conf_t, upstream.busy_buffers_size_conf),
       NULL },
 
+    { ngx_string("uwsgi_force_ranges"),
+      NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG,
+      ngx_conf_set_flag_slot,
+      NGX_HTTP_LOC_CONF_OFFSET,
+      offsetof(ngx_http_uwsgi_loc_conf_t, upstream.force_ranges),
+      NULL },
+
 #if (NGX_HTTP_CACHE)
 
     { ngx_string("uwsgi_cache"),
@@ -1271,6 +1278,7 @@ ngx_http_uwsgi_create_loc_conf(ngx_conf_
     conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT;
     conf->upstream.buffering = NGX_CONF_UNSET;
     conf->upstream.ignore_client_abort = NGX_CONF_UNSET;
+    conf->upstream.force_ranges = NGX_CONF_UNSET;
 
     conf->upstream.local = NGX_CONF_UNSET_PTR;
 
@@ -1354,6 +1362,9 @@ ngx_http_uwsgi_merge_loc_conf(ngx_conf_t
     ngx_conf_merge_value(conf->upstream.ignore_client_abort,
                               prev->upstream.ignore_client_abort, 0);
 
+    ngx_conf_merge_value(conf->upstream.force_ranges,
+                              prev->upstream.force_ranges, 0);
+
     ngx_conf_merge_ptr_value(conf->upstream.local,
                               prev->upstream.local, NULL);
 
diff --git a/src/http/ngx_http_upstream.c b/src/http/ngx_http_upstream.c
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -2276,6 +2276,17 @@ ngx_http_upstream_process_headers(ngx_ht
 
     r->disable_not_modified = !u->cacheable;
 
+    if (u->conf->force_ranges) {
+        r->allow_ranges = 1;
+        r->single_range = 1;
+
+#if (NGX_HTTP_CACHE)
+        if (r->cached) {
+            r->single_range = 0;
+        }
+#endif
+    }
+
     u->length = -1;
 
     return NGX_OK;
@@ -4393,6 +4404,10 @@ ngx_http_upstream_copy_allow_ranges(ngx_
 {
     ngx_table_elt_t  *ho;
 
+    if (r->upstream->conf->force_ranges) {
+        return NGX_OK;
+    }
+
 #if (NGX_HTTP_CACHE)
 
     if (r->cached) {
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
--- a/src/http/ngx_http_upstream.h
+++ b/src/http/ngx_http_upstream.h
@@ -162,6 +162,7 @@ typedef struct {
     ngx_flag_t                       ignore_client_abort;
     ngx_flag_t                       intercept_errors;
     ngx_flag_t                       cyclic_temp_file;
+    ngx_flag_t                       force_ranges;
 
     ngx_path_t                      *temp_path;