From 43fad05dcdae3b723c53c226f8181fc5bd47223e Mon Sep 17 00:00:00 2001
From: Emo-Damage <75520940+Emo-Damage@users.noreply.github.com>
Date: Thu, 22 Jun 2023 23:19:44 +0800
Subject: [PATCH] add doh for udp dns

---
 src/worker-vless.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/worker-vless.js b/src/worker-vless.js
index d8c02ba..27bec48 100644
--- a/src/worker-vless.js
+++ b/src/worker-vless.js
@@ -87,7 +87,7 @@ async function vlessOverWSHandler(request) {
 	// ws --> remote
 	readableWebSocketStream.pipeTo(new WritableStream({
 		async write(chunk, controller) {
-			if (isDns) {
+			if (isDns && udpStreamWrite) {
 				return udpStreamWrite(chunk);
 			}
 			if (remoteSocketWapper.value) {