Extended RPC error information [RPC over SChannel]

[dreijer]

I'm trying to set up RPC over SChannel but am having problems when the client
connects to the server. The server responds with the following Bind_nak
message:
"Reject reason: Authentication type not recognized (8)"

I've already verified that the server calls RpcServerRegisterAuthInfo() with
RPC_C_AUTHN_GSS_SCHANNEL, so I'm quite puzzled as to why it would return this
error.

I've enabled extended RPC error information and am seeing the extra
information in the Bind_nak response packet in Wireshark. However, I'm having
a hard time parsing it since the MSDN documentation for the error records is
very unspecific:
http://msdn.microsoft.com/en-us/library/aa379109(VS.85).aspx

For instance, it doesn't mention anything about the size of the Timestamp
("time when the error occurred, expressed in UTC format") in bytes.

How do I parse this information?

[dreijer]

Just for future reference, in case somebody is in the same situation as me,
you can find information about the structure here:
http://msdn.microsoft.com/en-us/library/aa378622(VS.85).aspx