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3.3.2.1 Negotiation Timer

When establishing the SSTP connection, the SSTP server starts the negotiation timer.

  1. When a New HTTPS Connection Received event is received, the server transitions to the Server_Connect_Request_Pending state where it waits to receive an acceptable Call Connect Request message. If this is received before the Negotiation timer expires, the server then sends a Call Connect Acknowledge message and transitions to the Server_Call_Connected_Pending state. If the request is not received before the Negotiation timer expires, the server transitions to the Call Failed state as shown in the server call establishment diagram in section 3.3.1.1.1.

  2. After sending the Call Connect Acknowledge message, if the server does not receive a Call Connected message before the Negotiation timer expires then it MUST send a Call Abort message and start the process of bringing down (disconnecting) the connection. The server MAY implement different timer values for the Call Connected message and the Call Connect Request message.

This timer SHOULD be set to 60 seconds.<9>

 
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