UDP effective message sending sequential control method

Abstract

The invention discloses a UDP effective message sending sequential control method. The method employs combination of a common hardware and software, and uses an original socket technology to directlybypass a protocol stack and a lower-layer MAC of an operation system, thereby fully controlling random packages and parameter change of lower-layer network messages; furthermore, data filling and transmission are separated using multithreading technology, and one CPU core is exclusively provided in transmission and receiving, thereby ensuring full-speed transmission of network; moreover, time among effective network messages is filled using ineffective network messages, thereby realizing nanosecond control of time interval of effective network messages.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a method for controlling the sending sequence of UDP effective messages. Background technique [0002] With the continuous development of network technology, network technology is also widely used in embedded real-time systems. In order to meet the needs of different real-time applications, various real-time protocols have even appeared to ensure the real-time performance of applications; but the above-mentioned real-time applications are basically All are on the order of 10 microseconds to milliseconds. [0003] Due to the convenience, economy and good scalability of network connection, it is also used in high-speed data acquisition and playback systems. This type of system generally requires the interval time control of valid network messages to be at the nanosecond level, which cannot be achieved using conventional software technology in the past. Generally, custom-developed...

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Problems solved by technology

[0004] 1. The development cost is high, new non-standard hardware and software equipment is required, the development cost is high, and different applications may require different hardware and software;

[0005] 2. The maintenance cost is high. In order to adapt to different needs, at least the FPGA program needs to be modified and debugged and tested, which takes a lot of time;

[0006] 3. The compatibility is poor, the network protocol is relatively complicated, and the hardware level basically only satisfies part of the network protocol functions, and many network control and management protocols cannot meet the requirements

[0007] Another way is to self-develop the driver of the network card, and realize the timing control of the network packet interval at the lower layer of the driver, but its versatility is very poor, and there will also be protocol compatibility issues.

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