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Method, device and system for data transmission
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A technology for data transmission and data transmission request, which is applied in the field of data transmission and can solve problems such as increased consumption of port resources and system resources
Active Publication Date: 2019-01-04
CHINANETCENT TECH
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Abstract
Description
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Problems solved by technology
[0005] Embodiments of the present invention provide a method, device and system for data transmission, to at least solve the problem of port resources and system resources in the process of data transmission caused by the need to monitor multiple data ports in the process of multiple data connections in the related art. technical problems with increased consumption of
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Embodiment 1
[0022] According to an embodiment of the present invention, a method embodiment of a data transmission method is provided. It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and , although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.
[0023] figure 1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:
[0024] Step S102, receiving the first data packet sent by the client;
[0025] The data transmission method provided by the embodiment of the present application can be applied to the file transfer process of the file transfer protocol (ftp for short).
[0026] Specifically, on the relay server side, when the clien...
Embodiment 2
[0090] According to an embodiment of the present application, an embodiment of an apparatus for implementing the above method embodiment is also provided, image 3 is a schematic structural diagram of a device for data transmission according to an embodiment of the present application. Such as image 3 As shown, the device includes: a first receiving module 32, a matching module 34, a port redirection module 36, a first encapsulation module 38 and a first sending module 40, wherein,
[0091] The first receiving module 32 is configured to receive the first data packet sent by the client;
[0092] The matching module 34 is used to match whether the port information in the first packet is identical to the pre-stored port information, and the port information includes: client port, client address, server port and server address;
[0093] The port redirection module 36 is used for redirecting the server port to the designated port of the transit server under the same matching res...
Embodiment 3
[0121] According to an embodiment of the present application, a data transmission system is also provided, Figure 8 is a schematic structural diagram of a data transmission system according to an embodiment of the present application. Such as Figure 8 As shown, the system includes: a server 81, a transfer server 82, and a client 83. The server 81 communicates with the client 83 through the transfer server 82, wherein the transfer server 82 is the above-mentioned data transmission device.
[0122] The serial numbers of the above embodiments of the present invention are for description only, and do not represent the advantages and disadvantages of the embodiments.
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Abstract
The invention discloses a data transmission method, device and system. Wherein, the method includes: receiving the first data packet sent by the client; matching whether the port information in the first data packet is the same as the pre-stored port information, and the port information includes: client port, client address, server port and server address; if the matching results are the same, redirect the server port to the designated port of the transit server; use the client port and client address in the port information as the source port and source address, and use the server port and server address as the destination The port and the destination address encapsulate the first data packet; and send the encapsulated first data packet to the server through the pre-established data connection. The invention solves the technical problem in the related art that the consumption of port resources and system resources increases in the process of data transmission due to the need to monitor multiple data ports in the process of multiple data connections.
Description
technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method, device and system for data transmission. Background technique [0002] File Transfer Protocol (File Transfer Protocol, FTP for short) In the process of data transmission, two connections need to be established between the FTP client and server, namely, a control connection and a data connection, wherein the control connection is used for the client and the server The destination transmission port and transmission address are specified on both sides, and the data connection is used for data transmission after the destination transmission port and transmission address are specified. When performing remote cross-network FTP file transfers, for example, when transferring files and data between domestic and foreign countries, in order to improve the speed and reliability of file transfers, it is necessary to establish a transfer station and a transfer n...
Claims
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Application Information
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