WP_HTTP: Add a filter to WP_HTTP_Proxy::send_through_proxy() to allow for plugins to modify which requests are sent to a proxy dynamically. Fixes #20222

git-svn-id: http://core.svn.wordpress.org/trunk@21225 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-http.php

@@ -1392,6 +1392,10 @@ class WP_HTTP_Proxy {
 
 		$home = parse_url( get_option('siteurl') );
 
+		$result = apply_filters( 'pre_http_send_through_proxy', null, $uri, $check, $home );
+		if ( ! is_null( $result ) )
+			return $result;
+
 		if ( $check['host'] == 'localhost' || $check['host'] == $home['host'] )
 			return false;