From fcc9d047ae7d589991c5790484cb1bfdd493c625 Mon Sep 17 00:00:00 2001
From: xream <xream@icloud.com>
Date: Sat, 21 Dec 2024 21:13:09 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E4=BF=AE=E5=A4=8D=20edns=20sourcePrefix?=
 =?UTF-8?q?Length?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 backend/package.json     | 2 +-
 backend/src/utils/dns.js | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/backend/package.json b/backend/package.json
index 3163951..f9bf22b 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.14.444",
+  "version": "2.14.445",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and ShadowRocket.",
   "main": "src/main.js",
   "scripts": {
diff --git a/backend/src/utils/dns.js b/backend/src/utils/dns.js
index 2321250..0c7366d 100644
--- a/backend/src/utils/dns.js
+++ b/backend/src/utils/dns.js
@@ -1,6 +1,7 @@
 import $ from '@/core/app';
 import dnsPacket from 'dns-packet';
 import { Buffer } from 'buffer';
+import { isIPv4 } from '@/utils';
 
 export async function doh({ url, domain, type = 'A', timeout, edns }) {
     const buf = dnsPacket.encode({
@@ -23,7 +24,7 @@ export async function doh({ url, domain, type = 'A', timeout, edns }) {
                     {
                         code: 'CLIENT_SUBNET',
                         ip: edns,
-                        sourcePrefixLength: 24,
+                        sourcePrefixLength: isIPv4(edns) ? 24 : 56,
                         scopePrefixLength: 0,
                     },
                 ],