Communication control method in connection-oriented communication, related transfer device, and billing management device
a communication control and connection-oriented technology, applied in the field of communication control methods in connection-oriented communication, related transfer devices, and billing management devices, can solve problems such as the inability to collect communication charges relative to request messages, and the discontinuation of communication
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first modification
[0103]In the above-described embodiment, TCP Connection B1 enters a half-closed state; and TCP Connection B2 enters a closed state, as shown in steps S206 to S211 of FIGS. 5 to 8 and steps S601 to S603 of FIGS. 6 and 8. However, TCP Connection B1 need not necessarily enter a half-closed state, and any type of connection state is accepted if communication in the direction from billing management server 50 to gateway server 40 is maintained until gateway server 40 receives, from billing management server 50, billing information for the HTTP communication up to the time that TCP Connection A was disconnected, in a case that discontinuation of TCP Connection A is detected during HTTP communication. Therefore, TCP Connection B may be maintained until gateway server 40 receives a HTTP Response from billing management server 50. It is also accepted that, instead of entering only TCP Connection B1 into a half-closed state, the entire TCP Connection B may be entered into a half-closed state....
second modification
[0115]In the above first modification, when gateway server 40 receives HTTP Response in step S410 of FIG. 9 and FIG. 10, it abandons data of the HTTP Response after obtaining billing information from the HTTP Response. This is because TCP Connection A has already been released, and HTTP Response cannot be transferred to portable phone 10.
[0116]However, TCP Connection A may have been disconnected for such a reason that a wireless link has temporarily been disconnected, in which case TCP Connection A can be restored after some time. In such a case, gateway server 40 may store HTTP Response received in step S410 without abandoning it, and, in a case that TCP Connection A is restored within a prescribed time period, gateway server 40 reads the HTTP Response stored in the memory for transmission to portable phone 10. The HTTP Response stored in the memory is deleted after a certain time period elapses since it was stored in the memory.
third modification
[0117]In the above-described embodiment, billing information is inserted in the extension header of HTTP Response, but instead, may be added to HTTP Response transmitted from billing management server 50 to gateway server 40. Alternatively, the billing information may be related to HTTP Response and transmitted along with the related HTTP Response.
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