Do not leak fd when DialUDP succeeds but Write fails

MegaManSec · MegaManSec · commit b14a964a654a · 2025-09-22T14:24:07.000+03:00
diff --git a/dnscrypt-proxy/netprobe_windows.go b/dnscrypt-proxy/netprobe_windows.go
@@ -36,6 +36,9 @@ func NetProbe(proxy *Proxy, address string, timeout int) error {
 			// set up yet. If this is the case Write fails with WSAENOBUFS: "An operation on a socket could not be
 			// performed because the system lacked sufficient buffer space or because a queue was full"
 			_, err = pc.Write([]byte{0})
+			if err != nil {
+				pc.Close()
+			}
 		}
 		if err != nil {
 			if !retried {
