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🐛 fix(doh): Improve DoH server compatibility detection for quad9

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This commit is contained in:
Ivan K
2025-03-30 17:04:30 +03:00
parent 87caa70e97
commit bc6490b56e
1 changed files with 11 additions and 9 deletions
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20
podkop/files/usr/bin/podkop
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@@ -2038,23 +2038,25 @@ check_dns_available() {
fi
if [ "$dns_type" = "doh" ]; then
# Different DoH providers use different endpoints and formats
local result=""
# Try common DoH endpoints and check for valid responses
# First try /dns-query endpoint (Cloudflare, AdGuard DNS, etc.)
result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server/dns-query?name=itdog.info&type=A")
if [ $? -eq 0 ] && echo "$result" | grep -q "data"; then
is_available=1
status="available"
if echo "$dns_server" | grep -q "quad9.net" || \
echo "$dns_server" | grep -qE "^9\.9\.9\.9$|^149\.112\.112\.112$|^2620:fe::fe$|^2620:fe::9$"; then
result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server:5053/dns-query?name=itdog.info&type=A")
else
# If that fails, try /resolve endpoint (Google DNS)
result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server/resolve?name=itdog.info&type=A")
result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server/dns-query?name=itdog.info&type=A")
if [ $? -eq 0 ] && echo "$result" | grep -q "data"; then
is_available=1
status="available"
else
result=$(curl --connect-timeout 5 -s -H "accept: application/dns-json" "https://$dns_server/resolve?name=itdog.info&type=A")
fi
fi
if [ $? -eq 0 ] && echo "$result" | grep -q "data"; then
is_available=1
status="available"
fi
elif [ "$dns_type" = "dot" ]; then
(nc "$dns_server" 853 </dev/null >/dev/null 2>&1) & pid=$!
sleep 2