Transport Layer Interface Purpose Sends a user-initiated disconnect request.
Parameters fd Identifies the local transport end point of the connection.
When rejecting a connect request, the call parameter must not be null and must contain a valid value in the sequence field to uniquely identify the rejected connect indication to the transport provider. The addr and opt fields of the call parameter are ignored. In all other cases, the call parameter need only be used when data is being sent with the disconnect request. If the user does not wish to send data to the remote user, the value of the call parameter can be null. The udata field specifies the user data to be sent to the remote user.