Network security communication method and device

Abstract

The invention relates to the technical field of communication protocols, and particularly provides a network security communication method which is characterized by comprising the following steps: S1, starting nodes, opening a port as an inter-node KCP protocol communication port, and then opening a node discovery mechanism port; s2, through a node discovery mechanism, nodes in the block chain obtain IP and KCP protocol monitoring ports of peer nodes in the network; s3, establishing a KCP protocol connection based on UDP between the nodes; s4, negotiating between the nodes to establish an encrypted channel; s5, messages are sent among the nodes; s6, the node sends a message to a block chain service layer for processing; and S7, sequentially disconnecting the KCP connection between the nodes. Compared with the prior art, the encryption channel is adopted, the safety of data communication is guaranteed, and the method has good popularization value.

Description

technical field [0001] The invention relates to the technical field of communication protocols, and specifically provides a network security communication method and device. Background technique [0002] TCP and UDP are the two main transport protocols in the transport layer. TCP is a transport protocol oriented to connection byte streams and provides reliable services to the application layer, while UDP is oriented to Packets (like IP packets, when communicating with peer-to-peer protocol stacks, No need to establish a connection in advance), unreliable, best-effort delivery (best-effort) transport protocol. TCP guarantees that the data delivered to the application layer is delivered in order, without loss, and without repetition. In order to achieve this goal, TCP has designed modules such as message numbering, confirmation, timeout retransmission, sliding window, and congestion control. This also makes the TCP protocol In the work, you have to pay a big price. Generally ...

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Problems solved by technology

TCP guarantees that the data delivered to the application layer is delivered in order, without loss, and without repetition. In order to achieve this goal, TCP has designed modules such as message numbering, confirmation, timeout retransmission, sliding window, and congestion control, which also makes the TCP protocol In the work, you have to pay a big price. Generally speaking, there are three main design goals of a network protocol: real-time, reliability, and fairness. In fact, these three evaluation dimensions cannot be optimal at the same time. Protocols have their design goals. For TCP, its design goals are mainly reliability and fairness, so the transmission efficiency of TCP is actually relatively low. For some applications with high real-time requirements, TCP's Latency is often unacceptable

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