The Stop-Control-Connection-Request is a PPTP control message sent by one peer of a PAC-PNS control connection to inform the other peer that the control connection should be closed. In addition to closing the control connection, all active user calls are implicitly cleared. The reason for issuing this request is indicated in the Reason field.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Length | PPTP Message Type |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Magic Cookie |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Control Message Type | Reserved0 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Reason | Reserved1 | Reserved2 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
LengthTotal length in octets of this PPTP message, including the entire PPTP header.
PPTP Message Type1 for Control Message.
Magic Cookie0x1A2B3C4D.
Control Message Type3 for Stop-Control-Connection-Request.
Reserved0This field MUST be 0.
ReasonIndicates the reason for the control connection being closed. Current valid Reason values are:
1 (None) - General request to clear control connection
2 (Stop-Protocol) - Can't support peer's version of the protocol
3 (Stop-Local-Shutdown) - Requester is being shut down
Reserved1, Reserved2These fields MUST be 0.