Speed ​​limiting method and device based on tcp connection

Abstract

The invention discloses a speed limiting method and a speed limiting device based on TCP (Transmission Control Protocol) connection, wherein the speed limiting method based on the TCP connection comprises the following steps: determining corresponding TCP connection through a TCP connection session hash table; judging whether a data packet passes or not in the TCP connection within a previous minimal RTO (Retransmission Time-Out) time, wherein the minimal RTO time is obtained according to a RTT (Round Trip Time); and allowing a current data packet to pass within a current minimal RTO time if not detecting that the data packet passes. According to the speed limiting method and the speed limiting device based on the TCP connection in the embodiment of the invention, the corresponding TCP connection is determined through the TCP connection session hash table; whether the data packet passes or not in the TCP connection within the previous minimal RTO time is judged; the current data packet is allowed to pass within the current minimal RTO time when the data packet pass is not detected; therefore, the disconnection problem of the TCP connection when the speed of a network is limited can be avoided; the stability of the network is ensured; and thus, user experience of users is improved.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a TCP connection-based rate limiting method and device. Background technique [0002] With the development of Internet technology, more and more users obtain required resources and process services through the Internet, and the resulting amount of network data is also continuously increasing. Therefore, in the case of limited bandwidth resources, it is usually necessary to limit the bandwidth rate for the network traffic of a certain service, a certain user, and a certain IP address. [0003] At present, for TCP (connection-oriented reliable transport layer protocol), the reliability of data transmission is mainly guaranteed through retransmission and confirmation mechanisms. When the total traffic of a user or service exceeds its bandwidth limit, the speed limit will be achieved by discarding data packets exceeding the bandwidth quota. For example, for a certain serv...

AI Technical Summary

Problems solved by technology

[0004] However, there is a certain blindness in the method of uniformly discarding data packets. If there are multiple TCP connections in a service, the data packets of a certain TCP connection may be discarded, causing the TCP connection to be retransmitted because the number of retransmissions exceeds the maximum number of retransmissions. Disconnected due to restrictions, affecting network stability and reducing user experience

Images