| 摘要 |
The invention relates to a method for transporting data between application programs which are allocated to different interconnected computers belonging to a network. The inventive method is based on a connectionless and packet-orientated transportation process by which means data packets are transported between application programs. When a data packet is transmitted from the application program of a source computer to that of the destination computer, a retransmission timer (RT) and an acknowledgement timer (QT) are initiated. After the data packet has been initially received, it is transferred to the application programme of the destination computer. Each time that the destination computer receives a data packet, an acknowledgement packet is transmitted back to the source computer, confirming receipt of the data packet. In the event that receipt has still not been registered after a predetermined retransmission waiting period, the data packet is re-transmitted. If it has still not been registered after a predetermined acknowledgement waiting period, the application program of the source computer is informed that receipt of the data packet has not been acknowledged within the acknowledgement waiting period. A message is also sent when the acknowledgement packet is received on time. The inventive method is especially suitable for distributed real time systems. The invention also relates to a computer network for carrying out the method.
|
