[PATCH 20 of 31] Additional headers for proxy_ignore_headers/fastcgi_ignore_headers

[Maxim Dounin]

# HG changeset patch
# User Maxim Dounin <mdounin at mdounin.ru>
# Date 1309187144 -14400
# Node ID d11450dffd2221fbb525e6aeab506d7a4239ac23
# Parent  cff690c009b20cf8b0b5d0fcad7e7fbe6bc0b3a0
Additional headers for proxy_ignore_headers/fastcgi_ignore_headers.

Now the following headers may be ignored as well: X-Accel-Limit-Rate,
X-Accel-Buffering, X-Accel-Charset.

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
@@ -360,6 +360,9 @@ ngx_conf_bitmask_t  ngx_http_upstream_ca
 ngx_conf_bitmask_t  ngx_http_upstream_ignore_headers_masks[] = {
     { ngx_string("X-Accel-Redirect"), NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT },
     { ngx_string("X-Accel-Expires"), NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES },
+    { ngx_string("X-Accel-Limit-Rate"), NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE },
+    { ngx_string("X-Accel-Buffering"), NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING },
+    { ngx_string("X-Accel-Charset"), NGX_HTTP_UPSTREAM_IGN_XA_CHARSET },
     { ngx_string("Expires"), NGX_HTTP_UPSTREAM_IGN_EXPIRES },
     { ngx_string("Cache-Control"), NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL },
     { ngx_string("Set-Cookie"), NGX_HTTP_UPSTREAM_IGN_SET_COOKIE },
@@ -3254,9 +3257,15 @@ static ngx_int_t
 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
     ngx_uint_t offset)
 {
-    ngx_int_t  n;
-
-    r->upstream->headers_in.x_accel_limit_rate = h;
+    ngx_int_t             n;
+    ngx_http_upstream_t  *u;
+
+    u = r->upstream;
+    u->headers_in.x_accel_limit_rate = h;
+
+    if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE) {
+        return NGX_OK;
+    }
 
     n = ngx_atoi(h->value.data, h->value.len);
 
@@ -3272,16 +3281,23 @@ static ngx_int_t
 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
     ngx_uint_t offset)
 {
-    u_char  c0, c1, c2;
-
-    if (r->upstream->conf->change_buffering) {
+    u_char                c0, c1, c2;
+    ngx_http_upstream_t  *u;
+
+    u = r->upstream;
+
+    if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING) {
+        return NGX_OK;
+    }
+
+    if (u->conf->change_buffering) {
 
         if (h->value.len == 2) {
             c0 = ngx_tolower(h->value.data[0]);
             c1 = ngx_tolower(h->value.data[1]);
 
             if (c0 == 'n' && c1 == 'o') {
-                r->upstream->buffering = 0;
+                u->buffering = 0;
             }
 
         } else if (h->value.len == 3) {
@@ -3290,7 +3306,7 @@ ngx_http_upstream_process_buffering(ngx_
             c2 = ngx_tolower(h->value.data[2]);
 
             if (c0 == 'y' && c1 == 'e' && c2 == 's') {
-                r->upstream->buffering = 1;
+                u->buffering = 1;
             }
         }
     }
@@ -3303,6 +3319,10 @@ static ngx_int_t
 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
     ngx_uint_t offset)
 {
+    if (r->upstream->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_CHARSET) {
+        return NGX_OK;
+    }
+
     r->headers_out.override_charset = &h->value;
 
     return NGX_OK;
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
@@ -44,6 +44,9 @@
 #define NGX_HTTP_UPSTREAM_IGN_EXPIRES        0x00000008
 #define NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL  0x00000010
 #define NGX_HTTP_UPSTREAM_IGN_SET_COOKIE     0x00000020
+#define NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE  0x00000040
+#define NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING   0x00000080
+#define NGX_HTTP_UPSTREAM_IGN_XA_CHARSET     0x00000100
 
 
 typedef struct {