CN107079057A - Data transmission method, device, system, electronic equipment and computer program product - Google Patents

Abstract

This invention provides a data transmission method, apparatus, system, electronic device, and computer program product. The method includes: upon receiving a data transmission response message from an FTP source server based on a data transmission request message, changing the IP address and port information of the FTP source server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and sending the changed IP address and port information to the client along with the data transmission response message. This invention, by changing the IP address and port information of the FTP source server in the data transmission response message to the IP address and port information of the FTP proxy server itself, accurately locates the FTP proxy server used by the client to establish a data connection, thereby achieving the technical effect of accelerating FTP upload and download speeds.

Description

Data transmission method, device, system, electronic equipment and computer program product

technical field

The present invention relates to the technical field of the Internet, in particular to a data transmission method, device, system, electronic equipment and computer program product.

Background technique

In the Passive mode of the File Transfer Protocol (FTP: File Transfer Protocol), the client establishes a control connection with port 21 of the FTP source server, which is used for the transmission of control commands between the client and the FTP source server. Control commands such as login , authentication, directory viewing and other control commands; the client establishes a data connection with the non-21 port of the FTP source server, which is used for data upload and download between the client and the FTP source server. Fig. 1 is a schematic diagram of the method for data transmission in the prior art of the present invention. As shown in Fig. 1, when there is only a single FTP proxy server, the IP address of the FTP proxy server and the non-21 Port, and send the specified FTP proxy server IP address and non-21 port information to the client through the control connection, so that the client can realize data transmission based on the specified FTP proxy server IP address and non-21 port.

The deficiencies in the prior art are:

In the application distribution network (ADN: Application Delivery Network) environment based on the Transmission Control Protocol (TCP: Transmission Control Protocol) proxy technology, and in the Passive mode of FTP, when there are multiple entry servers, the configuration file cannot pass Data transmission is realized by specifying the IP address and port of the entry server, but the IP address of the specified entry server is replaced by a domain name, and the FTP source server obtains the IP address of the entry server through DNS resolution. However, when the FTP origin server and the client are not in the same area, the DNS server will return different IP addresses when resolving the same domain name. slow.

Contents of the invention

The embodiment of the present invention proposes a data transmission method, device, system, electronic equipment and computer program product, which are mainly used to solve the technical problem of slow FTP upload/download speed.

In one aspect, an embodiment of the present invention provides a data transmission method, which is applied in an ADN network for FTP data transmission, and the method includes:

When receiving the data transfer response message sent by the FTP source server according to the data transfer request message, establish a data connection with the FTP source server according to the IP address and port information of the FTP source server in the data transfer response message;

Change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the data transmission response message sent to the client.

In another aspect, an embodiment of the present invention provides a data transmission device, which is characterized in that it is applied to an ADN network for FTP data transmission, and the device includes:

The data connection module is used to establish a connection with the FTP source station according to the IP address and port information of the FTP source station server in the data transmission response message when receiving the data transmission response message sent by the FTP source station server according to the data transmission request message. data connection to the server;

A change module, configured to change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the sent to the client in the Data Transfer Reply message described above.

In another aspect, an embodiment of the present invention provides a data transmission system applied to an ADN network for FTP data transmission, the system comprising:

The client is used to establish a data connection with the FTP proxy server according to the IP address and port information of the FTP proxy server in the data transmission response message when receiving a data transmission response message from the FTP proxy server;

The FTP proxy server is configured to establish a connection with the FTP source station according to the IP address and port information of the FTP source station server in the data transfer response message when receiving the data transmission response message sent by the FTP source station server according to the data transmission request message. the server's data connection, and

Change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the data transmission response message sent to the client;

The FTP source server is configured to receive the data of the uploaded file, or send the data of the downloaded file to the FTP proxy server.

In another aspect, an embodiment of the present invention provides an electronic device, which is applied in an ADN network and used for FTP data transmission, and the electronic device includes:

memory, one or more processors; and

One or more modules, the one or more modules are stored in the memory and are configured to be executed by the one or more processors, the one or more modules are included for performing the above method instructions for each step.

In another aspect, an embodiment of the present invention provides a computer program product used in combination with an electronic device, the computer program product includes a computer-readable storage medium and a computer program mechanism embedded therein, and the computer program mechanism Instructions for performing various steps in the methods described above are included.

Beneficial effects are as follows:

When there are multiple FTP proxy servers in the ADN network, the FTP proxy server receives the data transmission response message from the FTP source server, and changes the IP address and port information of the FTP source server in the data transmission response message to an FTP proxy The server's own IP address and port information can accurately locate the FTP proxy server used by the client to establish a data connection, thereby establishing a data connection between the client, the FTP proxy server and the FTP source server, and speeding up FTP Technical effect of upload/download speed.

Description of drawings

Specific embodiments of the present invention will be described below with reference to the accompanying drawings, wherein:

FIG. 1 is a schematic diagram of a method for data transmission in the prior art of the present invention;

FIG. 2 is a schematic diagram of a data transmission method in Embodiment 1 of the present invention;

FIG. 3 is a flowchart of a data transmission method in Embodiment 2 of the present invention;

FIG. 4 is a schematic flow diagram of data transmission in Embodiment 2 of the present invention;

FIG. 5 is a structural diagram of a device for data transmission in Embodiment 3 of the present invention;

FIG. 6 is a system architecture diagram of data transmission in Embodiment 4 of the present invention;

FIG. 7 is a schematic structural diagram of an electronic device in Embodiment 5 of the present invention.

detailed description

In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all implementations. Exhaustive list of examples. And in the case of no conflict, the embodiments in this description and the features in the embodiments can be combined with each other.

The inventor noticed during the invention that:

When there are multiple ingress servers, by configuring the domain name on the FTP origin server side, the DNS server on the FTP origin server side will resolve the configured domain name and send the resolved ingress server IP address and port information to the client. The client can only access the entry server on the FTP origin server side according to the IP address and port information, instead of accessing the entry server on the client side nearby, resulting in slow FTP upload/download speed.

In view of the above deficiencies, the embodiment of the present invention proposes that in a network environment where there are multiple ADN entry servers, when the ADN entry server receives the data transmission request message for downloading/uploading files sent by the client, the received data transmission request The message is sent to the FTP source station server, and when receiving the data transmission response message sent by the FTP source station server according to the data transmission request message, according to the IP address and port information of the FTP source station server in the data transmission response message to establish a connection with The data connection of the FTP source station server, at the same time, change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and change the changed IP address and port information The port information is carried in the data transmission response message and sent to the client, so as to realize the accelerated transmission of FTP data.

In order to facilitate the implementation of the present invention, the following examples are used to illustrate.

Embodiment one,

Fig. 2 shows a schematic diagram of a data transmission method in Embodiment 1 of the present invention, as shown in Fig. 2 , including:

Step 201: When receiving the data transfer response message sent by the FTP source server according to the data transfer request message, establish a data connection with the FTP source server according to the IP address and port information of the FTP source server in the data transfer response message connect.

Step 202: Change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the data Sent to the client in a Transport Reply message.

In step 201, when performing FTP data transmission, the client resolves the IP address of the nearest FTP proxy server (i.e. the ADN entry server in the ADN network) through the intelligent DNS, and establishes a control connection between the client and the FTP proxy server , and send a data transfer request message for downloading/uploading files to the FTP proxy server via the established control connection. At the same time, the FTP proxy server establishes a control connection with the FTP source station server, so that the FTP proxy server sends the data transmission request message to the FTP source station server through the established control connection, and then the FTP source station server listens to the Obtain a data transmission response message from the data transmission request message, and send the data transmission response message to the FTP proxy server.

Wherein, the data transmission request message is a control command transmitted via the control connection, such as a request message for uploading/downloading a file, etc., and the data transmission response message is a control command transmitted via the control connection, such as a response message for uploading/downloading a file.

The FTP proxy server obtains the IP address of the FTP source station server and non-port 21 (such as any port in 1500-1520 ports) information by analyzing the data transmission response message, and according to the IP address of the FTP source station server and non-port 21 Port 21 information establishes a data connection with the FTP source server, and at the same time, monitors the data stream of uploaded files from the client other than port 21, and the data stream of downloaded files from the FTP source server other than port 21.

In step 202, after the FTP proxy server carries the modified IP address and port information in the data transmission response message and sends it to the client, the client establishes a non-identical connection with the FTP proxy server according to the IP address and port information of the FTP proxy server. The data connection between ports 21, so that the FTP proxy server sends the data of the uploaded file from the client to the FTP source server through the established data connection, or sends the data of the downloaded file from the FTP source server through the established The data connection is sent to the client.

Further, the embodiments of the present invention also include:

When detecting that the TCP connection between the FTP proxy server and the client or the FTP source server is disconnected, disconnect the FTP proxy server from the FTP source server or the client between TCP connections.

The FTP proxy server monitors the TCP connection status with the client and the TCP connection status with the FTP source server in real time, so as to ensure the The synchronization of the TCP connection state between them. That is, when the FTP proxy server intelligently detects that the TCP connection status with the client is faulty, it promptly disconnects the TCP connection between the FTP proxy server and the FTP source server. When the TCP connection status between servers fails, disconnect the TCP connection between the FTP proxy server and the FTP source server in time.

Further, the embodiments of the present invention also include:

When it is detected that the FTP source station server fails, a control connection and a data connection are established with the backup FTP source station server of the FTP source station server.

The FTP proxy server intelligently monitors the port status of the FTP source server. When it detects that the port of the FTP source server fails, it will disconnect the control connection and data connection established with the FTP source server and switch to the FTP backup server. It can be seen that the FTP proxy server ensures timely switching when the FTP source server fails by monitoring the port status of the FTP source server in real time.

Embodiment 2 of the present invention will describe Embodiment 2 of the present invention in detail by taking a specific application scenario of realizing FTP data upload/download based on an ADN network including multiple entry servers as an example.

Embodiment two,

Fig. 3 shows a flowchart of a method for data transmission in Embodiment 2 of the present invention, as shown in Fig. 3 , including:

Step 301: The FTP source site server side pre-configures the IP address and port information of the FTP source site server itself for establishing a data connection with the client. The FTP origin server is usually configured in Passive mode. In Passive mode, specify the IP address and port number of the FTP origin server in the configuration file on the FTP origin server side. Fig. 4 shows a schematic flow diagram of data transmission in Embodiment 2 of the present invention. As shown in Fig. 4, the FTP source station server assumes that the specified IP address is 1.0.0.1, and the port number is 1500-1520, that is, the FTP source station server Its own IP address and port number.

Step 302: configure the entry server to monitor the data flow from the client and the FTP origin server. Configure the listening port of the entrance server on the ADN network side. Port 21 of each entrance server is used to listen to the request message of download/upload file from port 21 of the client, and the response message of download/upload file from port 21 of the FTP source server etc.; ports 1500-1520 of each entry server are used to monitor the data flow of uploaded files from ports 1500-1520 of the client, and the data flow of downloaded files from ports 1500-1520 of the FTP origin server.

Step 303: the client 2 establishes a control connection with the entry server, and the entry server establishes a control connection with the FTP origin server. Client 2 obtains the IP address of the nearest entry server analyzed by the smart DNS on the ADN network side according to the access request message from client 2, and establishes a control connection with the entry server according to the entry server IP address, that is, connects to the entry server port 21 (such as 1.0.0.1:21), the entry server establishes a control connection with the FTP origin server, that is, connects to port 21 of the FTP origin server.

Step 304: Client 2 sends a request message for downloading/uploading files to the FTP origin server via the portal server, and the FTP origin server carries its own IP address and port information in the response message for downloading/uploading files and sends it to the portal server. The client 2 sends the request message for downloading/uploading the file to the entry server via the established control connection, and the entry server forwards the request message for downloading/uploading the file to the FTP origin server. When the listening port of the FTP source server listens to the request message of the download/upload file, it carries its own IP address and port information in the response message of the download/upload file, and sends it to the entry server via the established control connection .

Step 305: The entry server modifies the IP address and port information in the response message, and returns the modified IP address and port information to the client 2 in the response message. When the entry server listens to the response message from the FTP source server, it establishes a data connection with the FTP source server according to the IP address and port information (such as 1.0.0.1:1500) of the FTP source server in the response message, to The portal server sends the data stream of the uploaded file from the client 2 to the FTP source server through the established data connection, and sends the data stream of the downloaded file from the FTP source server to the client 2 . At the same time, modify the IP address and port information of the FTP source server in the response message to the IP address and port information of the ingress server itself (such as 1.0.0.2:1500), and carry the modified IP address and port information in the response message returned to client 2.

Step 306: Client 2 establishes a data connection according to the IP address and port information from the entry server, so as to realize accelerated data transmission. Client 2 receives the response message returned via the control connection, and establishes a data connection with the entry server according to the IP address and port information (such as 1.0.0.2:1500) in the response message, so that client 2 will upload the file's The data flow is sent to the FTP origin server through the entry server, and the data flow of the downloaded file is received from the FTP origin server.

Step 307: The entry server monitors the TCP connection status with the client 2 and the TCP connection status with the FTP source server to ensure the synchronization of the TCP connection status between the client 2 and the FTP source server. When the ingress server intelligently detects that the TCP connection status with Client 2 is faulty, it promptly disconnects the TCP connection between the ingress server and the FTP source server. When the TCP connection status fails, disconnect the TCP connection between the ingress server and the FTP source server in time.

Step 308: The entrance server monitors the port status of the FTP source server to ensure timely switching when the FTP source server fails. The entrance server intelligently monitors the port status of the FTP source server, and when it detects that the port of the FTP source server fails, it will disconnect the control connection and data connection established with the FTP source server, and switch to the FTP backup server.

Embodiment three,

Based on the same inventive concept, a data transmission device is also provided in the embodiment of the present invention. Since the problem-solving principle of these devices is similar to a data transmission method, the implementation of these devices can refer to the implementation of the method, and the repetition is no longer repeat.

FIG. 5 shows a structural diagram of a device for data transmission in Embodiment 3 of the present invention. As shown in FIG. 5, the device may include:

The data connection module 501 is configured to establish a connection with the FTP source according to the IP address and port information of the FTP source server in the data transfer response message when receiving the data transfer response message sent by the FTP source server according to the data transfer request message. Data connection to the station server.

The change module 502 is used to change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in The data transfer response message is sent to the client.

Preferably, the device may also include:

The monitoring module 503 is configured to disconnect the FTP proxy server from the FTP source server when it is detected that the TCP connection between the FTP proxy server and the client or the FTP source server is disconnected, Or a TCP connection with said client.

Preferably, the device may also include:

The backup module 504 is configured to establish a control connection and a data connection with a backup FTP source server of the FTP source server when it is detected that the FTP source server fails.

Embodiment four,

Based on the same inventive concept, a data transmission system is also provided in the embodiment of the present invention. Since the problem-solving principles of these devices are similar to a data transmission method and a data transmission device, the implementation of these devices can refer to the implementation of the method , the repetitions will not be repeated.

FIG. 6 shows a system architecture diagram of data transmission in Embodiment 4 of the present invention. As shown in FIG. 6, the system may include:

The client 601 is configured to, when receiving a data transmission response message from the FTP proxy server, establish a data connection with the FTP proxy server according to the IP address and port information of the FTP proxy server in the data transmission response message.

The FTP proxy server 602 is configured to establish a connection with the FTP source server according to the IP address and port information of the FTP source server in the data transfer response message when receiving the data transfer response message sent by the FTP source server according to the data transfer request message. data connection to the station server, and

Change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the data transmission response message sent to the client.

The FTP source server 603 is configured to receive the data of the uploaded file, or send the data of the downloaded file to the FTP proxy server.

Embodiment five,

Based on the same inventive concept, an electronic device is also provided in the embodiment of the present invention. Since its principle is similar to a data transmission method, its implementation can be referred to in the implementation of the method, and repeated descriptions will not be repeated.

Fig. 7 shows a schematic structural diagram of an electronic device in Embodiment 5 of the present invention. As shown in Fig. 7, the electronic device includes: a transceiver device 701, a memory 702, one or more processors 703; and one or more modules , the one or more modules are stored in the memory and are configured to be executed by the one or more processors, the one or more modules include a method for performing each step in any of the above-mentioned methods instruction.

Embodiment six,

Based on the same inventive concept, the embodiment of the present invention also provides a computer program product used in combination with electronic equipment. Since its principle is similar to a data transmission method, its implementation can refer to the implementation of the method, and the repetition will not be repeated. . The computer program product includes a computer-readable storage medium and a computer program mechanism embedded therein, and the computer program mechanism includes instructions for executing each step in any one of the above-mentioned methods.

For the convenience of description, each part of the above-mentioned device is divided into various modules by function and described separately. Of course, when implementing the present invention, the functions of each module or unit can be implemented in one or more pieces of software or hardware.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow diagram procedure or procedures and/or block diagram procedures or blocks.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

Claims (9)

1. A data transmission method, characterized in that, being applied in the ADN network, for FTP data transmission, the method comprises: When receiving the data transfer response message sent by the FTP source server according to the data transfer request message, establish a data connection with the FTP source server according to the IP address and port information of the FTP source server in the data transfer response message; Change the IP address and port information of the FTP source station server in the data transmission response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the data transmission response message sent to the client. 2. The method of claim 1, further comprising: When detecting that the TCP connection between the FTP proxy server and the client or the FTP source server is disconnected, disconnect the FTP proxy server from the FTP source server or the client between TCP connections. 3. The method of claim 1, further comprising: When it is detected that the FTP source station server fails, a control connection and a data connection are established with the backup FTP source station server of the FTP source station server. 4. A data transmission device, characterized in that it is applied in an ADN network for FTP data transmission, and the device comprises: The data connection module is used to establish a connection with the FTP source station according to the IP address and port information of the FTP source station server in the control connection response message when receiving the control connection response message sent by the FTP source station server according to the control connection request message. data connection to the server; A change module, configured to change the IP address and port information of the FTP source station server in the control connection response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the sent to the client in the Control Connection Reply message described above. 5. The device of claim 4, further comprising: A monitoring module, configured to disconnect the FTP proxy server from the FTP source server when it is detected that the TCP connection between the FTP proxy server and the client or the FTP source server is disconnected, or A TCP connection with the client. 6. The device of claim 4, further comprising: The backup module is configured to establish a control connection and a data connection with a backup FTP source server of the FTP source server when it is detected that the FTP source server fails. 7. A data transmission system, characterized in that it is applied in the ADN network for FTP data transmission, the system comprising: The client is used to establish a data connection with the FTP proxy server according to the IP address and port information of the FTP proxy server in the control connection response message when receiving the control connection response message from the FTP proxy server; The FTP proxy server is configured to establish a connection with the FTP source station according to the IP address and port information of the FTP source station server in the control connection response message when receiving the control connection response message sent by the FTP source station server according to the control connection request message. the server's data connection, and Change the IP address and port information of the FTP source station server in the control connection response message to the IP address and port information of the FTP proxy server itself, and carry the changed IP address and port information in the control connection response message sent to the client; The FTP source server is configured to receive the data of the uploaded file, or send the data of the downloaded file to the FTP proxy server. 8. An electronic device, characterized in that it is applied in an ADN network for FTP data transmission, and the electronic device includes: transceiver, memory, one or more processors; and One or more modules, the one or more modules are stored in the memory and are configured to be executed by the one or more processors, the one or more modules comprising a method for performing claim 1 - Instructions for the individual steps of any of the methods described in 3. 9. A computer program product used in combination with an electronic device, said computer program product comprising a computer-readable storage medium and a computer program mechanism embedded therein, said computer program mechanism comprising means for performing claims 1-3 Instructions for each step in any of the described methods.