more logging

negotiator.go

@@ -121,8 +121,14 @@ func (l Negotiator) RoundTrip(req *http.Request) (res *http.Response, err error)
 		if err != nil {
 			return nil, err
 		}
+
+		// debugging
+		PrintDebug("Received NTLM Type 2 Challenge: %s", base64.StdEncoding.EncodeToString(challengeMessage))
+		DecodeNTLMMessage(challengeMessage)
+
 		if !(resauth.IsNegotiate() || resauth.IsNTLM()) || len(challengeMessage) == 0 {
 			// Negotiation failed, let client deal with response
+			PrintDebug("Negotiation failed")
 			return res, nil
 		}
 		io.Copy(io.Discard, res.Body)