Data communication method, client, server and system

A data communication and client-side technology, applied in the field of data communication, can solve problems such as complex logic, and achieve the effects of reducing memory usage, increasing speed, and reducing the size of connection tables

Pending Publication Date: 2022-04-29
HANGZHOU DPTECH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since it is impossible to distinguish new and old connections through quadruples, in order to create a new connection, the old connection needs to be processed according to different situations, such as whether the old connection can be aged and whether the new connection can be created. The processing logic is very complicated.

Method used

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  • Data communication method, client, server and system
  • Data communication method, client, server and system
  • Data communication method, client, server and system

Examples

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Embodiment Construction

[0026] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus their repeated descriptions will be omitted.

[0027] Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more...

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Abstract

The invention relates to a data communication method, a client, a server and a system, and the method comprises the steps that the client sends a connection request message to a server, and a TCP socket of the connection request message adopts a quintuple containing connection establishment initiation time; the server side analyzes the connection request message and obtains the connection establishment initiation time, and the connection establishment initiation time is included in a quintuple TCP socket for sending a connection response message to the client side to respond to the connection request message, so that the connection between the client side and the server side is established; the client sends a data request message to the server by containing the connection establishment initiation time in a TCP socket in the data request message; and the server analyzes the data request message and obtains the connection establishment initiation time, and the connection establishment initiation time is included in a quintuple TCP socket of a data response message sent to the client to respond to the data request message.

Description

technical field [0001] The present disclosure relates to the technical field of data communication, in particular, to a data communication method, client, server and system. Background technique [0002] In the data communication process of the client / server mode, the party that actively closes the connection enters the TIME-WAIT state after the last ACK response message sent to the other end in four waved hands. In this state, the party that actively closes the connection waits for 2MSL (Maximum Segment Life, which is defined as 2 minutes in RFC793 and 30s in Linux). The retransmitted FIN will change from TIME_WAIT state to CLOSED state. [0003] RFC793 describes that the ISN (Initial Sequence Number, initialization sequence number) will increase by 1 every 4 microseconds, and start from 0 after reaching 2^32. This cycle goes back and forth, and the cycle of an ISN is about 4.55 hours. So although the SYN serial number will not be the same every time a connection is esta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L69/16H04L67/01
CPCH04L69/162
Inventor 汪庆权李志林俊龙
Owner HANGZHOU DPTECH TECH
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