Non-connection-oriented reliable udp transmission protocol and data transmission method

Abstract

The invention discloses a non-connection-oriented reliable UDP transmission protocol and data transmission method. The method is used for communication among cluster nodes, and multiple cluster nodes are used in the method; and for each cluster node, the each cluster node comprises a transmitting module, a receiving module and a flow control module, the transmitting module comprises an information transmitting unit and a transmitting control unit, the receiving module comprises an information receiving unit and a receiving control unit, the information transmitting unit is connected with the transmitting control unit, and the information receiving unit is connected with the receiving control unit. The method comprises the following steps of: initialization, information transmitting, information receiving, time-out retransmitting, delay receipt returning and flow control. The method adopts a non-connection-oriented transmission mode, and thus, the network transmission efficiency is improved, and the processing capacity of a whole distributed system can be fully used; in the method, the time slot mechanism, the time-out retransmitting and the delay receipt returning are combined, and the integrality and the order of information are guaranteed; and the method can be used for dynamically and flexibly regulating the size of a transmitting window according to the traffic of a network.

Description

technical field [0001] The invention relates to a non-connection-oriented reliable UDP transmission protocol and a data transmission method, belonging to the technical field of computers. Background technique [0002] At present, the communication between each node is a very important issue for the database from stand-alone to cluster to cloud, involving efficiency, security, and speed. Traditional data transmission protocols mostly use connection-oriented communication methods. In a cluster of N nodes (Node), each additional node (Node) needs to maintain N more connections, which increases the maintenance cost of the system. [0003] Among the traditional transport layer protocols, TCP and UDP are two well-known ones. Choose UDP protocol, efficient and flexible. It is a connectionless protocol with a small header and does not require a process like the TCP three-way handshake to establish a connection. Instant sending without waiting. In a cloud database system with up ...

AI Technical Summary

Problems solved by technology

The UDP protocol is fast and convenient, but the pure UDP protocol is an unguaranteed transmission. It does not guarantee the order of the transmitted data, does not guarantee the retransmission of lost packets, does not guarantee that the receiver has received the message, and does not guarantee that the message is correct and complete.

Therefore, directly using the UDP protocol cannot meet the actual production needs. What we are doing is to make UDP transmission meet our production needs.

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