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Method, system and device for data transmission

A technology of data transmission and data transmission unit, which is applied in the field of data transmission and can solve problems such as unfavorable long-distance data file transmission and unreliable file transmission

Inactive Publication Date: 2008-09-24
SHENZHEN COSHIP ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of research and practice of the prior art, at least the following problems exist in the prior art: since the maximum distance of USB transmission is generally 30 meters, the file transmission beyond this distance will be unreliable, so it is not conducive to the transmission of long-distance data files. transmission

Method used

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  • Method, system and device for data transmission
  • Method, system and device for data transmission
  • Method, system and device for data transmission

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Embodiment Construction

[0033] The embodiment of the present invention provides a data transmission method, device and system, which are used to realize the function of the FTP protocol on the server side, so that the data transmission between the client and the client is not limited by the distance, and the different operations can be improved. Compatibility of data files under the system. In order to make the technical solution of the present invention clearer, the following examples are listed for detailed description.

[0034] see figure 1 , a flow chart of a method provided by an embodiment of the present invention, including:

[0035] S101: Initialize parameters required by the server. This parameter includes well-known port numbers on the server side, data connection port numbers, etc.

[0036] S102: Create a stream socket (SOCK_STREAM) in the main process on the server side. If the creation is successful, execute step S103; otherwise, return to S102. The stream socket is used to receive t...

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Abstract

The invention discloses a data transmission method, a device and a system, which comprises the steps: a stream socket in host process of a server is established, the address and port number of the stream socket and the server are bound, the stream socket is set into a monitoring module, a control connection is established between the server and the user end when a connection request from the user end is received, a receiving thread for the control connection is established, and a data transmission between the receiving thread and the user end is carried out. By adopting the data transmission method, a remote data transmission between server and user end can be realized, thus the compatibility of data file under different operation systems is improved.

Description

technical field [0001] The present invention relates to the technical field of communication, and in particular to a data transmission method, device and system. Background technique [0002] When copying data files from one computer to another far away computer, FTP (File Transfer Protocol, File Transfer Protocol) is usually used to provide some basic services of file transfer. FTP uses the client-server method, and one FTP server process can provide services for multiple client processes at the same time. The FTP server process includes: a master process responsible for accepting new requests, and several slave processes responsible for processing individual requests. When transferring files, a control connection and a data connection need to be established between the FTP client and the FTP server. The control connection remains open during the entire session. The transfer request sent by the FTP client is sent to the control process on the server side through the contr...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L29/06
Inventor 张彩虹
Owner SHENZHEN COSHIP ELECTRONICS CO LTD
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