tracker/udp/conn-client.go | 3 +++

diff --git a/tracker/udp/conn-client.go b/tracker/udp/conn-client.go
index 4e0d9852bd2672f9732eb88296396c7707ed5f60..1958c65953359558fd18dff4bddbbd9ed0155b62 100644
--- a/tracker/udp/conn-client.go
+++ b/tracker/udp/conn-client.go
@@ -35,6 +35,9 @@ 		if err != nil {
 			// TODO: Do bad things to the dispatcher, and incoming calls to the client if we have a
 			// read error.
 			cc.readErr = err
+			if !cc.closed {
+				panic(err)
+			}
 			break
 		}
 		err = cc.d.Dispatch(b[:n], addr)