| 摘要 |
Provided is a data exchange system comprising a client apparatus and a server apparatus, both configured to exchange a plurality of data to each other via a communication network, to establish a first session without authentication if the server apparatus approves a request for the first session from the client apparatus, as the server apparatus stores at most a record of a session canceled no less than a given time ago, to establish a second session after authenticating each other if the server apparatus requests authentication in response to the request for the first session, as the server apparatus stores a record of a session canceled less than a given time ago, to exchange a set of data on the first session after a check if the set of data needs authentication for being exchanged, and on the second session without the check.
|
