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Method for setting waiting time for completely closing transmission control procotol connection

A technology of transmission control protocol and waiting time, which is applied in the field of network communication, can solve problems such as inability to adjust and consume system resources, and achieve the effect of avoiding consumption

Inactive Publication Date: 2007-02-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from the above prior art that the first timeout time and the second timeout time of the FIN_WAIT_2 timer are both set to fixed time values, and the user cannot adjust them according to actual needs
For example, sometimes in order to prevent attackers from consuming system resources by establishing a large number of such semi-connections in a short period of time, it is necessary to make such semi-connections disappear in a short period of time, but the existing technology cannot meet this technical requirement

Method used

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  • Method for setting waiting time for completely closing transmission control procotol connection
  • Method for setting waiting time for completely closing transmission control procotol connection
  • Method for setting waiting time for completely closing transmission control procotol connection

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Embodiment Construction

[0021] See figure 2 , described as follows:

[0022] Step 1: The original macro will no longer be used to represent the value of the TCP connection full close waiting time timer, but will be represented by a variable, that is, the TCP connection full close waiting time variable will be established, and the TCP The connection full close waiting time variable sets the initialization default value. If the base initialization default value can be set to 10 minutes, the waiting time when the transmission control protocol connection enters the full close waiting state is 10 minutes;

[0023] After the transmission control protocol connection full close waiting time variable is established, the variable can be called as required, and the corresponding time value can be set for the variable;

[0024] The waiting time for all TCP connections to be closed is the sum of the two timeouts, that is, the sum of the first timeout and the second timeout; the second timeout is fixed at 75 sec...

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Abstract

This invention provides a method for designing overall closing waiting-time connection for a transmission control protocol connection overall closing which is to first set up a variable for the transmission control protocol connection overall closing waiting time, then to determine a desired design and a related value for the waiting time, finally, to call the variable and assign the waiting time value to it so as to overcome the shortcoming that it is unable to change the value of a timer conveniently since it's macro controlled. This invention can design overall closing waiting time to avoid setting up large quantities of semiconnections by attackers in short time wasting connection resources.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for setting a transmission control protocol connection full-close waiting time. Background technique [0002] During the network communication process, the client usually transmits data by establishing a TCP (Transmission Control Protocol) connection with the server; after the data transmission process is completed, the established connection needs to be closed to release connection resources for other connections. like figure 1 As shown, when the client closes the connection, it first sends a FIN (close connection request) to actively close it. After receiving the confirmation from the server, the local end enters the FIN_WAIT_2 (full close wait) state, waiting for the server-side application to realize that it has received An end of file description, and send a FIN to the local end to close the connection in the other direction, and the TCP connection of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
Inventor 赵彪马云
Owner HUAWEI TECH CO LTD