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Reliable UDP achievement method based on reserve request

An implementation method and reverse technology, applied in the direction of digital transmission system, electrical components, transmission system, etc., can solve the problems of low delay and small occupation of the system.

Inactive Publication Date: 2014-07-30
上海复兰信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The existing IP data transmission basically adopts the reliable data transmission protocol TCP, or the unreliable user data packet transmission protocol UDP mode. UDP transmission has the advantages of small system occupation, high transmission efficiency, and low delay, so it is widely used. In the solution of IP data transmission, but UDP is an unreliable IP data transmission protocol

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  • Reliable UDP achievement method based on reserve request
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Embodiment Construction

[0020] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0021] A method for realizing reliable UDP based on reverse request, comprising the following steps:

[0022] The data sender sends data packets online, and all data sent by the sender will be cached;

[0023] After the data receiving end receives the data packet through the receiving buffer strategy, the packet loss detection strategy of the receiving end detects and judges the packet loss, and then sends a retransmission request of the data packet to the sending end;

[0024] The data sending end receives the retransmission request from the data receiving end, and then processes the retransmission data packet according to the retransmission request.

[0025] The data sending end defines a global unsigned integer self-incrementing variable. When the system sends a data packet, it will use the valu...

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Abstract

The invention relates to the technical field of computer data transmission, and provides a reliable UDP achievement method based on a reserve request. The method includes the following steps that a data sending side sends data packets on line, all data sent by the sending side will be cached; after a data receiving side receives the data packets through a receiving cache policy, a retransmission request for sending the data packets to the sending side after packet loss is detected and judged through a packet loss detection strategy; the data sending side receives the retransmission request from the data receiving side, and the retransmission data packets are processed according to the retransmission request. Compared with a common reliable UDP solution, system resources are more saved, and efficiency is higher.

Description

technical field [0001] The invention belongs to the technical field of computer data transmission, in particular to a method for realizing a reliable UDP based on a reverse request. Background technique [0002] UDP: UDP is the abbreviation of User Datagram Protocol. The Chinese name is User Datagram Protocol. It is a connectionless transport layer protocol in the OSI (Open System Interconnection, Open System Interconnection) reference model, providing transaction-oriented simple and unreliable information. Transmission service, IETF RFC768 is the official specification of UDP. The protocol number of UDP in IP packets is 17. [0003] TCP: Short for Transmission Control Protocol / Internet Protocol, the Chinese translation is called Transmission Control Protocol / Internet Internet Protocol, also known as Network Communication Protocol, which is the most basic protocol of the Internet and the foundation of the Internet. Layer TCP protocol composition. TCP / IP defines the standa...

Claims

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Application Information

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IPC IPC(8): H04L12/813H04L12/823H04L12/861H04L47/20H04L47/32
Inventor 王庚
Owner 上海复兰信息科技有限公司