3.1.2.5.1 RPC Connect Request Received

When a mixed proxy receives an RPC connect request, it MUST retrieve the server name and server port from the URI of the RPC connect request as specified in section 2.2.2. It MUST establish a TCP connection to the server using the server name and port. It then waits for the server legacy response defined in section 2.1.1.2.1. The mixed proxy MUST NOT respond to PDUs received from the client as specified in section 3.1.2.5.2 until a server legacy response is received. When a server legacy response is received, the mixed proxy MUST respond to the client with the header of an RPC connect response as specified in section 2.1.1.1.2. It MUST also begin processing PDUs received in the message body of the RPC connect request from the client, as specified in section 2.1.1.1.3, as well as PDUs coming from the server.