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Data receiving and sending method and device

A data receiving method and data technology, applied in the field of communications, can solve problems such as direct access barriers between clients and servers

Active Publication Date: 2020-01-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a method and device for data receiving and sending, to at least solve the problem of direct access between the client and the server when the client and the server are located behind different NAT devices in the related art obstacle problem

Method used

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  • Data receiving and sending method and device

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Embodiment Construction

[0037] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0038] The steps shown in the flow diagrams of the figures may be implemented in a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flow diagrams, in some cases, may be executed differently from this The steps shown or described are performed in the order shown or described.

[0039] The "first" and "second" in the following embodiments are only used for distinction, and do not limit the sequence.

[0040] An embodiment of the present invention provides a data receiving method, figure 2 is a flowchart of a data receiving method according to an embodiment of the present invention, such as figure 2 As shown, the method includes...

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Abstract

The present invention provides a method and device for receiving and sending data. The data receiving method includes: the client obtains the information of the receiving port of the client and the information of the sending port of the server, wherein the receiving port is used for the client to receive data, and the sending port For the server to send data, the client accesses the network through the first NAT; the client sends a penetration message to the server through the first NAT according to the information of the sending port, where the penetration message is used for the first NAT record The mapping relationship between the information of the sending port and the information of the receiving port, which is used to allow the data sent by the server to reach the client through the first NAT; the client receives the data sent by the server and reaches the client through the first NAT data. It solves the problem in the related art that when the client and the server are located behind different NAT devices, there are obstacles in the direct access of the client and the server.

Description

technical field [0001] The present invention relates to the communication field, in particular, to methods and devices for receiving and sending data. Background technique [0002] With the depletion of IPv4 address resources and the widespread use of Network Address Translation (NAT) technology, the original data transmission process between the client and the server may not be applicable to the network system through the NAT network. Taking Real Time Streaming Protocol (RTSP for short) as an example, RTSP is an application layer protocol in the TCP / IP protocol system, which defines how an application program can effectively transmit multimedia data through an IP network. figure 1 It is an interactive flowchart of the RTSP protocol in related technologies, such as figure 1 As shown, the RTSP client and RTSP server can interact directly, which is very convenient. [0003] However, as NAT is added to the relevant networking system, the RTSP client and server are located beh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/12
CPCH04L61/2521H04L61/2575H04L61/00
Inventor 柏林玲张新星
Owner ZTE CORP
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