diff --git a/svr.js b/svr.js
index e0b1c1e..206b24c 100644
--- a/svr.js
+++ b/svr.js
@@ -2953,7 +2953,7 @@ if (!cluster.isPrimary) {
       }
     }
 
-    if (req.headers["x-svr-js-from-main-thread"] == "true" && (!req.socket.remoteAddress || req.socket.remoteAddress == "::1" || req.socket.remoteAddress == "::ffff:127.0.0.1" || req.socket.remoteAddress == "127.0.0.1" || req.socket.remoteAddress == "localhost" || req.socket.remoteAddress == host || req.socket.remoteAddress == "::ffff:" + host)) {
+    if (req.headers["x-svr-js-from-main-thread"] == "true" && req.socket && (!req.socket.remoteAddress || req.socket.remoteAddress == "::1" || req.socket.remoteAddress == "::ffff:127.0.0.1" || req.socket.remoteAddress == "127.0.0.1" || req.socket.remoteAddress == "localhost" || req.socket.remoteAddress == host || req.socket.remoteAddress == "::ffff:" + host)) {
       var headers = getCustomHeaders();
       res.writeHead(204, "No Content", headers);
       res.end();