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Communication method and communication device

A communication method and communication device technology, applied in the field of computer communication, can solve the problems of high server load and bandwidth occupation, achieve the effect of improving system performance and ensuring penetration efficiency

Active Publication Date: 2016-10-12
湖州帷幄知识产权运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application defect of long connection is high server load and bandwidth occupation

Method used

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  • Communication method and communication device
  • Communication method and communication device

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Embodiment Construction

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation manners of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, and those skilled in the art can obtain other accompanying drawings based on these drawings and obtain other implementations.

[0023] As mentioned above, NAT is to translate the address of the device in the private network to the address of the public network. For example, when the client is in the intranet of the NAT device, the address connected to the server is actually the address mapped by the NAT device, rather than the address obtained by the client from the DHCP server of the intranet as the address of the client itself. When the client communicates with the server, the NAT device will map the add...

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Abstract

The invention provides a communication method. The communication method comprises the following steps: determining whether NAT (Network Address Translation) equipment exists on a link or not by judging whether an address of a client is the same as an address of the client received on a server or not; judging whether a multi-level NAT series connection exists or not by judging an address of network equipment which is connected with the client is the same as the address of the client received on the server or not; and performing communications between the client and the server in a UPnP (Universal Plug-n-Play) or long-connection way. The invention also provides a communication device. According to the scheme of the invention, the advantages of a plurality of NAT penetration ways are combined, and all NAT types can be penetrated, so that the penetration efficiency is ensured, and the system performance is improved.

Description

technical field [0001] The present invention relates to computer communication, in particular to a method and device for communicating between a client and a server. Background technique [0002] NAT (Network Address Translation), also known as "Network Address Translation", is a technology that translates internal private network addresses into legal network IP addresses. NAT is to use a private address inside the LAN, and when the internal node wants to communicate with the external network, the internal address is replaced with a public address at the gateway (which can be understood as an exit), so that it can be used normally on the public network (internet). Through this method, you can only apply for a legal IP address, and connect the computers in the entire LAN to the Internet. [0003] In such a system, the device's private address cannot be routed on the public network. In this way, NAT not only solves the problem of insufficient IPv4 address resources, but also...

Claims

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Application Information

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IPC IPC(8): H04L29/12
CPCH04L61/2582
Inventor 张享达
Owner 湖州帷幄知识产权运营有限公司
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