3.2.5.1 Connection-Oriented
Message processing on the server takes place in the following two cases:
Upon receipt of the embedded NEGOTIATE_MESSAGE (section 2.2.1.1), the server extracts and decodes the NEGOTIATE_MESSAGE.
Upon receipt of the embedded AUTHENTICATE_MESSAGE (section 2.2.1.3), the server extracts and decodes the AUTHENTICATE_MESSAGE.
These two cases are specified in the following sections.