DSM-CC Protocol (METHOD FOR CANCELING SESSION RELEASE IN DSM-CC PROTOCOL)

摘要

The present invention relates to a method for simplifying session cancellation initiated by a server in a DSM-CC protocol. In order to solve this problem, a server is connected to a network and a client so as to enable data communication, A communication method using a message with a client, the method comprising: a first step of applying a "request to cancel a server session restoration" message from a server to a network for a session restoration to be canceled; Determining whether the message received from the server is a " server session cancellation request message ", and if the message is a server session cancellation request message, transmitting a "client session cancellation request message" from the network to the client; After the second step, it is determined whether the message received from the network to the client is a " client session start cancel cancel " message, and if the client session start cancel cancellation message, Step 3; If the "cancellation of session cancellation" is not possible by the third step, a message informing that the cancellation of client cancellation has not been made is sent to the network, while if the "cancellation of session cancellation" Canceling the business and transmitting a message to the network notifying the cancellation; A fifth step of determining whether or not the " client session start cancel cancel response " message has been received from the client after the fourth step; If it is determined in the fifth step that the " client session start cancel cancel response " message has been delivered, a determination is made as to whether the " session start up " As a result of the determination in the sixth step, if it is determined that the " session start-up " has not been canceled, a message is transmitted from the network to the server that the &, And a seventh step of canceling the session establishment on the network and then transmitting a message to the server informing the cancellation of the session, so that the existing DSM-CC does not have a command for canceling the session initiation initiated by the server, It is possible to compensate for the disadvantage that the utilization of time and resources between clients is greatly reduced.