| 摘要 |
PURPOSE:To transmit the latest confirmation response packet and to decrease the number of the confirmation response packets to be transmitted by updating the information of the confirmation response packet when the confirmation response packet is not transmitted. CONSTITUTION:Whether or not the update of an AK packet previously transmitted on a transport connection is valid is checked by a transport processing part 40. That is, whether or not the pointer of a transmission buffer 50 is registered in the connection corresponding part of an AK packet managing part 10 is checked, and whether or not the already set AK packet is transmitted to a network transmission path is checked by flags 54 and 55 provided at a buffer management area 51. Then, whether or not a transmission end flag 54 is turned off is checked before and after an update flat 55 is set, and when the AK packet is not transmitted, and the update is valid, the change of the sequence number, credit value and header length of the AK packet, and the addition to an option part are operated.
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