Network access system and method based on application layer data

Abstract

The embodiments of the invention propose a system for network access based on application layer data, including: a client, for establishing TCP connection with an access server, and sending a data request to the access server based on the TCP connection; an access server, for selecting a background server providing service to the client from a background server group according to the data request, and sending TCP protocol information negotiated in the TCP connection to the selected background server; the selected background server, for providing data directly to the client according to the TCP protocol information, without via the access server. The embodiments of the invention also propose a method for network access based on application layer data. By applying of the embodiments of the invention, the complexity is reduced, the implementation efficiency is enhanced, and the interactive process is simplified for the background server.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communication, and more specifically, to a network access system and method based on application layer data. Background technique [0002] Transmission Control Protocol (Transmission Control Protocol, TCP) is a connection-oriented (connection-oriented), reliable, byte stream-based transport layer (Transport layer) communication protocol, established by the RFC of RIETF of the Internet Engineering Task Force (IETF) 793 Description (specified). In the simplified Open Systems Interconnection (OSI) model of computer networking, it performs the functions specified by the fourth layer transport layer. [0003] The TCP protocol stipulates that a connection must be established before transmitting application layer data. During the process of establishing a connection, the two sides of the communication need to perform several information synchronizations, which is generally called a thr...

AI Technical Summary

Problems solved by technology

[0007] First of all, the access server needs to establish a TCP connection with the client and the back-end server through a three-way handshake, so the implementation complexity is high

[0008] Moreover, establishing a TCP connection between the access server and the client and the back-end server will inevitably require a large amount of CPU and memory resources, and the receiving and sending of data also requires additional memory copying, and all incoming and outgoing traffic needs to pass through the access server. Work efficiency is not high, easy to become a bottleneck

[0009] Not only that, the requests seen by the back-end server are all from the access server, and the client cannot be aware of it, so this access scheme is not transparent to the back-end server

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