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diff src/http/ngx_http_upstream.c @ 6530:1d0e03db9f8e

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Upstream: the "transparent" parameter of proxy_bind and friends. This parameter lets binding the proxy connection to a non-local address. Upstream will see the connection as coming from that address. When used with $remote_addr, upstream will accept the connection from real client address. Example: proxy_bind $remote_addr transparent;
author Roman Arutyunyan <arut@nginx.com>
date Fri, 18 Dec 2015 19:05:27 +0300
parents 88f012eee7d8
children f7849bfb6d21
line wrap: on
line diff
--- a/src/http/ngx_http_upstream.c
+++ b/src/http/ngx_http_upstream.c
@@ -5788,7 +5788,7 @@ ngx_http_upstream_bind_set_slot(ngx_conf
 
     value = cf->args->elts;
 
-    if (ngx_strcmp(value[1].data, "off") == 0) {
+    if (cf->args->nelts == 2 && ngx_strcmp(value[1].data, "off") == 0) {
         *plocal = NULL;
         return NGX_CONF_OK;
     }
@@ -5841,6 +5841,22 @@ ngx_http_upstream_bind_set_slot(ngx_conf
         }
     }
 
+    if (cf->args->nelts > 2) {
+        if (ngx_strcmp(value[2].data, "transparent") == 0) {
+#if (NGX_HAVE_TRANSPARENT_PROXY)
+            local->transparent = 1;
+#else
+            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                               "transparent proxying is not supported "
+                               "on this platform, ignored");
+#endif
+        } else {
+            ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
+                               "invalid parameter \"%V\"", &value[2]);
+            return NGX_CONF_ERROR;
+        }
+    }
+
     return NGX_CONF_OK;
 }
 
@@ -5858,6 +5874,10 @@ ngx_http_upstream_set_local(ngx_http_req
         return NGX_OK;
     }
 
+#if (NGX_HAVE_TRANSPARENT_PROXY)
+    u->peer.transparent = local->transparent;
+#endif
+
     if (local->value == NULL) {
         u->peer.local = local->addr;
         return NGX_OK;