// TestUDPTrackerError verifies that the UDP tracker error format is correct
func TestUDPTrackerError(t *testing.T) {
log.Println("TestUDPTrackerError()")
// Create a UDP tracker, trigger an error
tracker := UDPTracker{TransID: uint32(1234)}
res := tracker.Error("Testing")
// Decode response
errRes := new(udp.ErrorResponse)
err := errRes.UnmarshalBinary(res)
if err != nil {
t.Fatalf("Failed to decode UDP error response")
}
log.Println(errRes)
// Verify correct action
if errRes.Action != 3 {
t.Fatalf("Incorrect UDP action, expected 3")
}
// Verify correct error
if errRes.Error != "Testing" {
t.Fatalf("Incorrect UDP error, expected 'Testing'")
}
// Encode response, verify same as before
errResBuf, err := errRes.MarshalBinary()
if err != nil {
t.Fatalf("Failed to encode UDP error response")
}
if !bytes.Equal(res, errResBuf) {
t.Fatalf("Byte slices are not identical")
}
}
// Error reports a UDP []byte response packed datagram
func (u UDPTracker) Error(msg string) []byte {
// Create UDP error response
errRes := udp.ErrorResponse{
Action: 3,
TransID: u.TransID,
Error: msg,
}
// Convert to UDP byte buffer
buf, err := errRes.MarshalBinary()
if err != nil {
log.Println(err.Error())
return u.Error(ErrErrorFailure.Error())
}
return buf
}
