Client terminal and connection detecting method

A client, communication connection technology, applied in the field of network communication, can solve problems such as transmission data loss, and achieve the effect of avoiding loss

Inactive Publication Date: 2008-01-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the mobile station continues to transmit data to the access point that has been disconnected until the access point initiates the next authentication request (AuthenticationRequest), resulting in the loss of transmitted data

Method used

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  • Client terminal and connection detecting method
  • Client terminal and connection detecting method
  • Client terminal and connection detecting method

Examples

Experimental program
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Embodiment Construction

[0012] Referring to FIG. 1 , it is a schematic diagram of an application environment of a wireless local area network 10 of the present invention.

[0013] The WLAN 10 includes a client (or electronic device) 100 , a server 200 and an attacking device (or another electronic device) 300 . In this embodiment, the client 100 is a mobile station (Station) that can communicate with the server 200 through the 802.11 protocol, the server 200 is an access point (Access Point), and the attack device 300 is a mobile station with a frame generator.

[0014] The client 100 communicates with the server 200 wirelessly. The attack device 300 can impersonate the server 200 through the Media Access Control (MAC) address of the server 200 and transmit the management frame 1000 to the client 100 . After receiving the management frame 1000, the client 100 first determines the frame state (Frame State) according to the management frame 1000, and transmits a class frame to the server 200 according...

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Abstract

A client end which is connected with a server includes a receiving module, a stage determination module, a transmission module, a frame judgment module and a condition judgment module. The receiving module is used for receiving a management frame and the stage determination module is used for determining the frame stage according to the management frame. The transmission module is used for transmitting the grade frame to the server according to the frame stage, wherein, the frame corresponded by the grade ratio frame stage of the grade frame has a very high grade. The frame judgment module is used for judging whether the expecting frame is received. The condition judgment module is used for judging the connecting condition of the client end and the server according to the judgment result of the frame judgment module. The invention also provides a connection detecting method which is used for detecting the connecting condition of the client end and the server. The client end and the connection detecting method thereof can timely detect the server, the connection of which is cut off to stop the client from transmitting the data to the server, thereby avoiding the loss of the transmission data.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a client and a connection detection method thereof. Background technique [0002] In a wireless local area network (Wireless Local Area Network, WLAN), when a mobile station (Station) is connected to an access point (Access Point, AP), since most existing mobile stations do not have the attack detection function, if the access point When the access point receives the disassociation frame (Disassociation Frame) or the deauthentication frame (Dauthentication Frame) sent by the attacker (Attacker), the access point will automatically cut off the connection with the mobile station. At this time, the mobile station continues to transmit data to the disconnected access point until the access point initiates the next authentication request (AuthenticationRequest), thus causing the loss of the transmitted data. Contents of the invention [0003] In view of this, it is necessary to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L12/24H04L12/66H04L29/06
Inventor 唐正文
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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