p2p/discover, p2p/discv5: use netutil.IsTemporaryError

p2p/discover/udp_test.go

@@ -43,56 +43,6 @@ func init() {
 	spew.Config.DisableMethods = true
 }
 
-// This test checks that isPacketTooBig correctly identifies
-// errors that result from receiving a UDP packet larger
-// than the supplied receive buffer.
-func TestIsPacketTooBig(t *testing.T) {
-	listener, err := net.ListenPacket("udp", "127.0.0.1:0")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer listener.Close()
-	sender, err := net.Dial("udp", listener.LocalAddr().String())
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer sender.Close()
-
-	sendN := 1800
-	recvN := 300
-	for i := 0; i < 20; i++ {
-		go func() {
-			buf := make([]byte, sendN)
-			for i := range buf {
-				buf[i] = byte(i)
-			}
-			sender.Write(buf)
-		}()
-
-		buf := make([]byte, recvN)
-		listener.SetDeadline(time.Now().Add(1 * time.Second))
-		n, _, err := listener.ReadFrom(buf)
-		if err != nil {
-			if nerr, ok := err.(net.Error); ok && nerr.Timeout() {
-				continue
-			}
-			if !isPacketTooBig(err) {
-				t.Fatal("unexpected read error:", spew.Sdump(err))
-			}
-			continue
-		}
-		if n != recvN {
-			t.Fatalf("short read: %d, want %d", n, recvN)
-		}
-		for i := range buf {
-			if buf[i] != byte(i) {
-				t.Fatalf("error in pattern")
-				break
-			}
-		}
-	}
-}
-
 // shared test variables
 var (
 	futureExp          = uint64(time.Now().Add(10 * time.Hour).Unix())