From 25b20b6514d37afc24bb315e14f1bcd4b93bd4b3 Mon Sep 17 00:00:00 2001
From: ShadowsSide <a84552179@gmail.com>
Date: Sat, 7 Mar 2026 15:15:21 -0800
Subject: [PATCH] fix(utils): prioritize common ALPN protocols and use a single
 ALPN for Tuic nodes in Surge configuration.

---
 src/utils/surge.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/utils/surge.ts b/src/utils/surge.ts
index 010b10806..9bb08b015 100644
--- a/src/utils/surge.ts
+++ b/src/utils/surge.ts
@@ -538,7 +538,13 @@ function appendCommonConfig(
   if (nodeConfig.type === NodeTypeEnum.Tuic) {
     appendConfig.push(
       ...('alpn' in nodeConfig && Array.isArray(nodeConfig.alpn)
-        ? [`alpn=${nodeConfig.alpn.join(',')}`]
+        ? (() => {
+            const alpn = nodeConfig.alpn as string[]
+            const preferred = ['h3', 'h2', 'http/1.1'].find((a) =>
+              alpn.includes(a),
+            )
+            return [`alpn=${preferred ?? alpn[0]}`]
+          })()
         : []),
     )
   }