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Information transmission method of network interface

A technology of information transmission and network interface, applied in the field of information transmission of network interface and Socket (socket) interface, can solve problems such as inflexibility, inability to transplant, incompatibility, etc., to improve versatility and flexibility , the effect of simplifying the data structure and ensuring security

Active Publication Date: 2014-08-20
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This method is relatively simple and clear, but it is not flexible enough. When transferring data between different systems and protocols, it often cannot be transplanted or compatible. Therefore, it is necessary to define data transmission formats and protocols separately for different systems, which increases the system. Development cost and complexity of network transport

Method used

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  • Information transmission method of network interface

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Embodiment Construction

[0024] Such as figure 1 The information transmission method of the network interface of the present invention shown includes:

[0025] Data packet processing: It is used to define a common data transmission format to form a variety of data packet protocols. The fields of the data transmission format include: message start identifier, message header, command length, message ID, command content and message Hash code; where the command The length is variable. For simplicity, define the command length as n×8 (n is an integer). Perform data packet processing according to the defined data transmission format, such as packaging, unpacking, encryption, network monitoring, network connection, etc.

[0026] Lexical analysis: according to the lexical analysis tool (such as lex), define the format of the keyword vocabulary in the command and the keyword vocabulary required to generate the command;

[0027] Grammatical analysis: according to the grammatical analysis tool (such as yacc), ...

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Abstract

The invention relates to an information transmission method of a network interface. The method comprises the following steps that: a master control module initiates data packet processing so as to enable a system to load each data packet protocol defined in the data packet processing; the system executes lexical analysis on each input word; the system executes syntax analysis after executing the lexical analysis to get corresponding semantics; and the system executes corresponding command action processing according to the obtained semantics, and forms the execution result into message data according to the data transmission format defined in the data packet processing so as to perform network transmission. In the method provided by the invention, the format of the data packet is not needed to be defined again, and corresponding data packet can be formed just by defining corresponding grammar and command functions according to the uniform data format, thus, data structure in network transmission is simplified, the universality and the flexibility of the data packet are improved, and the method is particularly suitable for the Socket interaction between a broadcast television service operation management system and a CA (Conditional Access) system.

Description

technical field [0001] The invention relates to an information transmission method, specifically an information transmission method of a network interface, especially suitable for but not limited to the information transmission of a Socket (socket) interface in a CA (conditional access) system. Background technique [0002] Socket is a network programming interface called socket. Socket is the ultimate socket point for two-way communication between one process and another process. It is the basic mechanism of IPC and heterogeneous machine network interconnection of computer system introduced by Berkeley in Unix system. [0003] The design of the traditional network interface data packet is realized by storing the agreed content in a specified fixed position in the data packet. This method is relatively simple and clear, but it is not flexible enough. When transferring data between different systems and protocols, it often cannot be transplanted or compatible. Therefore, it ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L29/10
Inventor 蒋伟
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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