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Method and device for detecting TCP (transmission control protocol) packet loss and TCP stack

A protocol stack and packet loss technology, applied in the field of Internet technology applications, can solve problems such as bandwidth not being utilized and data not being transmitted for a long time

Active Publication Date: 2012-10-31
SANGFOR TECH INC
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method and device for detecting TCP packet loss, aiming to solve the technical problems in the prior art that data cannot be transmitted for a long time and bandwidth cannot be utilized

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  • Method and device for detecting TCP (transmission control protocol) packet loss and TCP stack

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Embodiment Construction

[0044] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] The embodiment of the present invention provides a device for detecting TCP packet loss, refer to figure 1 , the device consists of:

[0046] Detect small packet processing module 10, for after sending data packet to common protocol stack and before data is confirmed by normal protocol stack, extract part data from the data packet that has been sent and generate detection small packet and send to normal protocol stack;

[0047] The packet loss judging module 20 is used for judging the packet loss of the sent data packet according to the ACK or SACK response fed back by the common protocol stack.

[0048]In the embodiment of the present invention, the device for detecting TCP packet loss is set on the protocol stack at the detection end, and the protocol stack performs data interaction with the common protocol ...

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Abstract

The invention discloses a device for detecting TCP (transmission control protocol) packet loss. The device comprises a detection packet processing module and a packet loss judgment module, wherein the detection packet processing module is used for extracting part of data from data packets which have been transmitted to generate detection packets and transmitting the detection packets to common protocol stacks after the data packets are transmitted to the common protocol stacks and before the data is confirmed by the common protocol stacks; and the packet loss judgment module is used for judging the loss conditions of the transmitted data packets according to the ACK (acknowledgement character) or SACK (selective acknowledgement) replies fed back by the common protocol stacks. The invention also provides a method for detecting TCP packet loss and a TCP stack. By adopting the device, the method and the TCP stack, the problem of unnecessary retransmission caused by untimely feedback of reply packets under the condition of RTT (round-trip time) change can be solved, meanwhile, the defect that retransmission packets have to be subjected to timeout drive of a timeout retransmission timer can be overcome, and packet loss can be found accurately and then retransmission can be carried out instantly.

Description

technical field [0001] The present invention relates to the application field of Internet technology, and more specifically, relates to a method, a device and a TCP protocol stack for detecting TCP packet loss. Background technique [0002] With the increasing popularity of Internet technology, the Internet plays an increasingly important role in people's life and work. It is no exaggeration to say that the Internet has been closely related to people's life and work, even inseparable. As we all know, the carriers that carry Internet data packets are various protocol stacks, such as TCP (Transmission Control Protocol, Transmission Control Protocol), UDP (User Datagram Protocol, User Datagram Protocol), ICMP (Internet Control Message Protocol, Internet Control message protocol), STCP (Scalable Transmission Control Protocol, scalable transmission control protocol) and so on. Among them, TCP has occupied a giant position due to its stable and reliable transmission method, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/16H04L29/08
Inventor 辛智敏
Owner SANGFOR TECH INC
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