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data transfer method

A data transmission method, data transmission technology, applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problems of increasing design cost and development difficulty

Active Publication Date: 2020-03-31
ZHUHAI JIELI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the terminal uses the above protocols for remote communication, it will rely heavily on the background server as an information transfer station, which will undoubtedly increase the design cost and development difficulty, which will also make the remote communication of the Internet of Things have certain limitations.

Method used

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] Before describing the embodiments according to the present invention in detail, it should be noted that the described embodiments mainly lie in the combination of steps related to the data transmission method. Accordingly, pertinent method steps have been indicated at appropriate places in the drawings by conventional symbols, and only details relevant to the understanding of the embodiments of the invention have been shown so as not to obscure the ordinary skill in the art having the benefit of the invention. Those details that are obvious to the human eye can obscure the disclosure of the ...

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Abstract

The present invention relates to a data transmission method and device. The method includes accessing a first local area network to obtain its own external network IP address; sending the acquired own external network IP address and its own terminal identifier to a server, and receiving from the server Obtain the external network IP addresses and terminal identifiers of all terminals connected to the server; query the external network IP address of the target terminal from the external network IP addresses of the terminals connected to the server according to the terminal identifier; the target terminal is in the second local area network Middle; perform a handshake with the target terminal according to the external network IP address of the target terminal; perform data transmission with the target terminal after the handshake is successful. The above data transmission method and device, after registering with the server, can obtain the external network IP addresses of all terminals registered in the server, and through the external network IP addresses, the terminal can communicate with the target terminal without transferring information on the server , improving the real-time performance of communication between terminals.

Description

technical field [0001] The invention relates to the communication field, in particular to a data transmission method. Background technique [0002] At present, HTTP (Hypertext transfer protocol, hypertext transfer protocol), HTTPS (Hypertext Transfer Protocol over Secure Socket Layer, HTTP channel with security as the goal), CoAP (Constrained Application Protocol, restricted application protocol) are mostly used in the communication protocol between terminals. ), TFTP (Trivial File Transfer Protocol, Trivial File Transfer Protocol), etc. They are all communication protocols based on the TCP / IP protocol (abbreviation of Transmission Control Protocol / Internet Protocol, Chinese translation is called Transmission Control Protocol / Internet Protocol, also known as network communication protocol) family. HTTP is a three-way handshake. Transmission, similarly, HTTPS only changes HTTP plaintext transmission to ciphertext transmission; COAP generally uses UDP (abbreviation for User D...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/741H04L29/12H04L29/08H04L45/74
CPCH04L45/74H04L61/2503H04L67/146
Inventor 冯洪鹏邱昭升
Owner ZHUHAI JIELI TECH
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