🐛 fix(podkop): Handle DNS check errors and timeouts properly

podkop/files/usr/bin/podkop

@@ -2049,14 +2049,15 @@ check_dns_available() {
             fi
         fi
     elif [ "$dns_type" = "dot" ]; then
-        nc $dns_server 853 </dev/null >/dev/null 2>&1 & pid=$!
-        (sleep 3; kill $pid 2>/dev/null) & killpid=$!
-        wait $pid >/dev/null 2>&1
-        if [ $? -eq 0 ]; then
+        (nc "$dns_server" 853 </dev/null >/dev/null 2>&1) & pid=$!
+        sleep 2
+        if kill -0 $pid 2>/dev/null; then
+            kill $pid 2>/dev/null
+            wait $pid 2>/dev/null
+        else
             is_available=1
             status="available"
         fi
-        kill $killpid 2>/dev/null
     elif [ "$dns_type" = "udp" ]; then
         if nslookup -timeout=2 itdog.info $dns_server >/dev/null 2>&1; then
             is_available=1