UDP-based reliable transmission method

Abstract

The invention relates to a UDP-based reliable transmission method. It is a reliable transmission protocol on a UDP layer; the reliable transmission protocol comprises reliable transmission, unreliable transmission and out-of-order transmission; the reliable transmission is used for providing reliable data transmission between two upper applications; received data messages need to be confirmed; lost data messages need to be retransmitted; the received data messages are submitted to the upper applications according to the message reliable serial number sequence; unreliable transmission is used for providing unreliable data transmission between the two upper applications; the received data messages do not need to be confirmed; the lost data messages do not need to be retransmitted; the received data messages are submitted to the upper applications according to the message unreliable serial number sequence; the out-of-order transmission is used for providing out-of-order data transmission between the two upper applications; the received data messages do not need to be confirmed; the lost data messages do not need to be retransmitted; and the received data messages are submitted to the upper applications directly according to the receiving sequence. The UDP-based reliable transmission method disclosed by the invention is good in reliability.

Description

technical field [0001] The invention relates to a method for establishing a reliable transmission on the UDP layer, which is a UDP-based reliable transmission method. Background technique [0002] With the rapid development of Internet technology, network applications are growing rapidly. Applications have higher and higher requirements on the network. Usually game applications require the network to have low latency and be able to send and receive data frequently. TCP is a transport layer control protocol formulated by IETF, which is a connection-oriented, byte-stream-based, and reliable transmission control protocol. The TCP layer is an intermediate layer located above the IP layer and below the application layer. It provides reliable data transmission, congestion control and other functions for the application layer. [0003] TCP is not suitable for this situation because of its high latency and flow direction. UDP is a connectionless, datagram-based, unreliable tran...

AI Technical Summary

Problems solved by technology

However, the resulting protocol portfolio still leaves a lot to be desired

For example, TCP lacks the establishment of multi-channel sockets to complete multi-channel communication. Due to its buffer mechanism, TCP packet division is very complicated.

UDP lacks mechanisms such as sequence numbers, connection management, and bandwidth resource management, and limits the size of data packets

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