WO2015117393A1

WO2015117393A1 - File transmission method, device and system

Info

Publication number: WO2015117393A1
Application number: PCT/CN2014/089098
Authority: WO
Inventors: 阚江涛
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-07-25
Filing date: 2014-10-21
Publication date: 2015-08-13
Also published as: CN105306512B; CN105306512A

Abstract

A file transmission method, device and system, a corresponding program instruction, and a carrier storing the program instruction. The method comprises: encoding a file transmission acquisition request into first request information capable of being transmitted by telnet/ssh, and sending same; and after executing first decoding on the first request information at an opposite end, and encoding an acquired object file into an encoded file capable of being transmitted by telnet/ssh according to the result of the execution of the first decoding and returning same, executing second decoding on the acquired encoded file to restore the object file. The technical solution can not only transfer a file, but can also transfer other data streams, thereby realizing the possibility of transmitting any data via a telnet protocol.

Description

File transmission method, device and system

Technical field

The present invention relates to the field of file transmission technologies, and in particular, to a file transmission method, device and system.

Background technique

Currently, ftp (File Transfer Protocol)/sftp (Secure File Transfer Protocol)/http (Hypertext Transfer Protocol)/https (Hyper Text Transfer Protocol over Secure Socket Layer) File transfer protocols such as the secure ssl encrypted transport protocol) implement file transfer, but these protocols cannot implement file transfer across the network, and devices on the path must open corresponding transport ports and routes for file transfer.

For network security and management convenience, devices for file transfer are usually divided into multiple independent subnets. When file transfer is implemented through these subnets, the gateway devices of each subnet generally open relatively secure SSH (Secure). Shell, Secure Shell Protocol) Management port. Since the device and the device are not all connected, but only the adjacent two can communicate with each other, and the ftp/sftp/http/https file transfer protocol restricts the transfer of files across the network, how to provide one A method for enabling file transfer across different networks is a technical problem to be solved.

Summary of the invention

In view of this, an object of embodiments of the present invention is to provide a file transmission method, apparatus, and system for implementing file transmission across different networks.

In order to solve the above technical problems, the following technical solutions are adopted:

A file transmission method for implementing file transmission on a transmission network divided into different subnets, wherein the transmission device in the transmission network supports the telnet/ssh protocol, and the method includes:

The local end encodes the file transmission acquisition request into the first request information that can be transmitted by the telnet/ssh, and sends the first request information to the peer end, where the file transmission acquisition request includes the target text selected by the local end from the file list. File name and file path;

Performing a first decoding on the first request information at the opposite end, encoding the obtained target file corresponding to the first decoding execution result into an encoded file that can be transmitted by telnet/ssh, and returning the encoded file to the local end, The local end performs a second decoding on the received encoded file to restore the target file.

Optionally, the encoded file is obtained by compressing the encoded file that can be transmitted by telnet/ssh.

Optionally, before performing the step of encoding the file transmission acquisition request into the first request information that can be transmitted by the telnet/ssh and sending the information to the peer end, the method further includes:

Encoding the file list obtaining request into the second request information that can be transmitted by telnet/ssh and sending the request information to the peer end;

Performing third decoding on the second request information at the opposite end, and encoding the obtained target file list corresponding to the third decoding execution result into a file list file that can be transmitted by telnet/ssh and listing the encoded file. After the file returns to the local end, the local end performs fourth decoding on the received file list file, and displays the file list.

Obtaining, by the peer end, the encoded file transfer request that can be transmitted by the telnet/ssh, where the file transfer request includes a file name and a file path of the target file selected by the peer from the file list;

Performing a first decoding on the file transmission acquisition request to obtain a first decoding execution result, where the first decoding execution result includes a file name and a file path of the target file to be acquired;

After acquiring the target file according to the first decoding execution result, the local end encodes the target file into an encoded file that can be transmitted by telnet/ssh, and sends the encoded file to the opposite end, so that the opposite end encodes the encoded file. After the file performs the second decoding, the target file is restored.

Optionally, after the step of encoding the object file into an encoded file that can be transmitted by telnet/ssh, the method further includes:

Determining whether the size of the encoded file exceeds a preset threshold, and performing a compression process on the encoded file when determining that the size of the encoded file exceeds a preset threshold.

Optionally, before the step of obtaining, by the peer end, the encoded file transmission request that can be transmitted by telnet/ssh, the method further includes:

Obtaining a coded list of files that can be transmitted by telnet/ssh to obtain a request;

Performing a third decoding on the file list obtaining request, acquiring a target file list according to the third decoding execution result, and encoding the target file list into a file list file that can be transmitted by telnet/ssh and transmitting the file list file to the opposite end, so that After the peer performs the fourth decoding on the file list file, the file list is displayed.

A transmitting device, configured to implement file transmission on a transmission network divided into different subnets, wherein the transmission device in the transmission network supports a telnet/ssh protocol, including a first coding unit and a first decoding unit, where:

The first encoding unit is configured to: encode a file transfer obtaining request into a first request information that can be transmitted by telnet/ssh, and the file transfer obtaining request includes a file name and a file of the target file selected from the file list. path;

The first decoding unit is configured to: perform a first decoding on the first request information on the receiving side, and encode the acquired target file corresponding to the first decoding execution result into an encoded file that can be transmitted by telnet/ssh and After returning the encoded file to the transmitting device, performing second decoding on the received encoded file to restore the target file.

Optionally, the first coding unit is further configured to: encode the file list acquisition request into second request information that can be transmitted by telnet/ssh and send the same;

The first decoding unit is further configured to: perform a third decoding on the second request information by the receiver, and encode the obtained target file list corresponding to the third decoding execution result into a file that can be transmitted by telnet/ssh After the list file returns the encoded file list file to the transmitting device, a fourth decoding is performed on the obtained file list file to display the file list.

a receiving device, configured to implement file transmission on a transmission network divided into different subnets, wherein the transmission device in the transmission network supports a telnet/ssh protocol, where the second decoding unit and the second coding unit are included, among them:

The second decoding unit is configured to: acquire a file transmission acquisition request that has been encoded to be telnet/ssh, and perform a first decoding on the file transmission acquisition request to obtain a first decoding execution result; The file transfer request includes a file name and a file path of the target file selected by the peer from the file list, where the first decoding execution result includes a file name and a file path of the target file to be acquired;

The second encoding unit is configured to: acquire an object file according to a first decoding execution result, and encode the target file into an encoded file that can be transmitted by telnet/ssh, and send the encoded file to a sender, so as to send After performing the second decoding on the encoded file, the target file is restored.

Optionally, the receiving device further includes a determining unit and a compressing unit, where:

The determining unit is configured to: after the second encoding unit encodes the target file into an encoded file that can be transmitted by telnet/ssh, determine whether the size of the encoded file exceeds a preset threshold, and determines that the preset threshold is exceeded. Sending a file compression command to the compression unit;

The compression unit is configured to perform a compression process on the encoded file according to the file compression command.

Optionally, the second decoding unit is further configured to: obtain a file list acquisition request that has been encoded to be telnet/ssh, and perform a third decoding on the file list acquisition request;

The second coding unit is further configured to: obtain a target file list according to a third decoding execution result, and encode the target file list into a file list file that can be transmitted by telnet/ssh and encode the file The subsequent file list file is sent to the sender so that after the sender performs the fourth decoding on the file list file, the file list is displayed.

A file transmission system for implementing file transmission on a transmission network divided into different subnets, the transmission device in the transmission network supporting the telnet/ssh protocol, including a sender and a receiver, wherein:

The sender is configured to: encode a file transmission acquisition request into a first request information that can be transmitted by telnet/ssh, and the file transmission acquisition request includes a file of the target file selected by the sender from the file list. Name and file path; and performing a second decoding on the encoded file obtained from the recipient to restore the target file;

The receiving party is configured to: perform a first decoding on the first request information, and obtain a first decoding execution result, where the first decoding execution result includes a file name and a file path of the target file to be acquired; The target file corresponding to the first decoding execution result is encoded, and the acquired object file is encoded into an encoded file that can be transmitted by telnet/ssh and returned to the sender.

Optionally, the receiving party is further configured to: after performing the encoding on the acquired target file according to the first decoding execution result, determining whether the size of the encoded file exceeds a preset threshold, and when determining that the preset threshold is exceeded, The encoded file performs a compression process.

Optionally, the sender is further configured to: encode the file list obtaining request into second request information that can be transmitted by telnet/ssh and send the fourth request decoding, and perform fourth decoding on the file list file obtained from the receiving party, and display The list of files;

The receiving side is further configured to: perform third decoding on the second request information, obtain a third decoding execution result, acquire an object file corresponding to the third decoding execution result, and encode the obtained target file list into a A file list file transmitted by telnet/ssh and returning the encoded file list file to the sender.

A computer program comprising program instructions that, when executed by a sender, cause The sender can execute the corresponding file transfer method.

A carrier carrying the computer program.

A computer program comprising program instructions that, when executed by a recipient, cause the recipient to perform a corresponding file transfer method.

A carrier carrying the computer program.

Compared with the related art, the technical solution of the present invention can realize the communication between the intranet and the b intranet, the communication between the intranet and the b outer network, and the communication between the outer network and the b outer network. In the specific implementation, the intermediate device of the transmission only needs to support the standard telnet/ssh protocol. The transmitting and receiving devices for transmission have the purpose of realizing file transmission across subnets by transmitting code and decoding functions by transmitting and decoding the telnet/ssh protocol. The problem of copying files to the equipment site is needed, which improves work efficiency. In some other embodiments, the technical solution of the present invention can not only transfer files, but also can transfer other data streams, thereby realizing the possibility of any data being transmitted through the telnet protocol.

BRIEF abstract

FIG. 1 is a schematic flowchart of file downloading implemented by a file transmission method according to an embodiment of the present invention.

2 is a schematic flowchart of an implementation process of a file transmission method according to an embodiment of the present invention.

FIG. 3 is a telnet/ssh multi-level login flowchart of a file transfer method according to an embodiment of the present invention.

FIG. 4 is a schematic diagram of file downloading implemented by a file transfer method according to an embodiment of the present invention; FIG.

FIG. 5 is a flowchart of a file encoding process in a file transfer method according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of a format of a message after file encoding according to an embodiment of the present invention.

7 is a schematic diagram of a file decoding process in an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a transmitting apparatus according to an embodiment of the present invention; FIG.

FIG. 9 is a schematic structural diagram of a receiving apparatus according to an embodiment of the present invention.

The implementation, functional features and excellent effects of the object of the present invention will be further described below in conjunction with the specific embodiments and the accompanying drawings.

Preferred embodiment of the invention

The technical solutions of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments to enable those skilled in the art to understand the invention. .

As shown in FIG. 1 , a file transmission method is provided for implementing file transmission on a transmission network divided into different subnets. The transmission device in the transmission network supports the telnet/ssh protocol, and includes:

S10. Encode the file transmission acquisition request into the first request information that can be transmitted by telnet/ssh and send the information.

S20: Perform a first decoding on the first request information at the opposite end, and encode the obtained target file into an encoded file that can be transmitted by telnet/ssh according to the first decoding execution result, and return, and execute the acquired encoded file. The second decoding is to restore the target file. Optionally, after the first decoding is performed on the first request information by the peer end, the obtained target file is encoded into an encoded file that can be transmitted by telnet/ssh according to the first decoding execution result, and compression processing is performed, and then Send to the peer. In a specific implementation manner, the sender carries the command for compressing the requested file in the file transmission acquisition request, and the command is confirmed and executed after the receiver decodes the file transmission acquisition request, and the receiver performs the decoding according to the decoding. As a result, the encoding process is performed on the encoded file, or in other embodiments, the receiving party has pre-customized the processing mode of the file transfer, such as performing file compression processing before the file is sent, which can greatly improve the efficiency of file transfer, especially for This is especially true for text files.

When logging in to the remote device using the telnet/ssh protocol, the request login information can be redirected multiple times on the intermediate transmission device in the transmission network, as shown in Figure 2 and Figure 3. For example, connect device 1 through telnet/ssh. After logging in to device 1, log in to device 2 through telnet/ssh. After logging in to device 2, log in to device 3 through telnet/ssh, and so on, and finally log in to the target device.

Generally, in the embodiment of the present invention, various request commands and receptions sent by the sender are received. After the file information is transmitted by the telnet/ssh encoder, as shown in FIG. 6, the encoded format includes: a transmission start flag, a data header line, a data body line, a transmission end flag, and a part. Due to the nature of the telnet/ssh transmission file, in this embodiment, the general transmission line does not exceed 120 characters, otherwise the telnet/ssh transmission process may be in error due to exceeding the single line content length limitation.

Optionally, before performing all the steps, the file transmission method further includes:

S01. Encode the file list obtaining request into a second request information that can be transmitted by telnet/ssh and send the information.

S02: Perform third decoding on the second request information at the opposite end, and encode the obtained target file list into a file list file that can be transmitted by telnet/ssh according to the third decoding execution result, and return the obtained file. The list file performs a fourth decoding and displays the list of files.

For example, when sending a file list acquisition request, the sender first encodes the file list acquisition request into a character type that can be transmitted by telnet/ssh through the telnet/ssh encoder, and after the encoding is completed, sends the telnet to the opposite end (receiver). The /ssh decoder, the receiver will interpret and execute the received file list request request command, such as obtaining a corresponding file list, and interpreting the execution result through the telnet/ssh encoder to perform encoding, and then sending the telnet/ssh to the sender. The decoder completes the display of the file list after performing the decoding. In this way, the sender can know the corresponding file path through the file list to obtain the corresponding file.

As shown in FIG. 4 and FIG. 5, after the sender transmits the file list acquisition request and displays the corresponding file list locally on the sender, the sender transmits the file transmission acquisition request again. The file acquisition request is encoded by the telnet/ssh encoder into a character type that can be transmitted by telnet/ssh, and sent to the receiver's telnet/ssh decoder, which decodes and executes the received command, and the receiver will interpret the execution result. Its telnet/ssh encoder is encoded and returned to the sender.

As shown in FIG. 7, after acquiring the encoded file sent by the receiver, the sender performs second decoding on the encoded file acquired from the receiver to restore the target file.

In addition, when the sender needs to upload the file, it is basically the same as the process of downloading the file. The sender sends a file transfer request, and the file transfer request is encoded by the telnet/ssh encoder into a character type that can be transmitted by telnet/ssh, and then sent to the receiver's telnet/ssh decoder, which decodes the command and completes the file. Transfer request.

In another embodiment, the present invention provides a file transmission method for implementing file transmission on a transmission network divided into different subnets, and the transmission device in the transmission network supports the telnet/ssh protocol, including :

S30. Acquire a file transmission acquisition request that has been encoded into a telnet/ssh transmission;

S40. Perform a fifth decoding on the file transmission acquisition request, obtain an object file according to the fifth decoding execution result, and encode the target file into an encoded file that can be transmitted by telnet/ssh and send the encoded file to the peer end, so that After performing the sixth decoding on the encoded file, the corresponding target file is restored.

In the step S40, optionally, after performing encoding on the acquired target file according to the fifth decoding execution result, determining whether the size of the encoded file exceeds a preset threshold, and when determining that the preset threshold is exceeded, The encoded file performs a compression process.

S03. Acquire a file list acquisition request that has been encoded into a telnet/ssh transmission;

S04. Perform a seventh decoding on the file list obtaining request, obtain a target file list according to the seventh decoding execution result, and encode the target file list into a file list file that can be transmitted by telnet/ssh and send the file list file to the peer end. After the peer performs the sixth decoding on the file list file, the file list is displayed.

Correspondingly, the embodiment of the present invention further provides a sending apparatus, as shown in FIG. 8, for implementing file transmission on a transmission network divided into different subnets, and the transmission equipment in the transmission network supports telnet/ The ssh protocol includes:

The first encoding unit 801 is configured to: encode the file transmission acquisition request into the first request information that can be transmitted by telnet/ssh and send the same;

The first decoding unit 802 is configured to: after the receiver performs the first decoding on the first request information, and encodes the acquired target file into an encoded file that can be transmitted by telnet/ssh according to the first decoding execution result, and returns Performing a second decoding on the obtained encoded file to restore the target file.

When logging in to the remote device using the telnet/ssh protocol, the request login information can be redirected multiple times on the intermediate transmission device in the transmission network, as shown in Figure 2 and Figure 3. For example, the sending device connects to the device through telnet/ssh. 1. After successfully logging in to device 1, log in to device 2 through telnet/ssh. After successfully logging in to device 2, log in to device 3 through telnet/ssh, and so on, and finally log in to the target device.

Generally, in the embodiment of the present invention, after the various request commands sent by the transmitting device and the file information sent by the receiver are encoded by the telnet/ssh encoder, as shown in FIG. 6, the encoded format includes : Transfer start tag, data header line, data body line, transfer end tag, and part. Due to the nature of the telnet/ssh transmission file, in this embodiment, the general transmission line does not exceed 120 characters, otherwise the telnet/ssh transmission process may be in error due to exceeding the single line content length limitation.

Optionally, the first encoding unit 801 is further configured to: encode the file list obtaining request into second request information that can be transmitted by telnet/ssh and send the second request information;

After the third decoding of the second request information is performed by the receiver, and the target file list acquired according to the third decoding execution result is encoded into a file list file that can be transmitted by telnet/ssh and returned, the first decoding unit The 802 is further configured to perform a fourth decoding on the obtained file list file to display the file list.

For example, when the sending device sends the file list obtaining request, the file list obtaining request is first encoded by the first encoding unit (telnet/ssh encoder) into a character type that can be transmitted by telnet/ssh, and after the encoding is completed, the sending is sent to the opposite end. (receiver) telnet/ssh decoder, the receiver will interpret and execute the received file list acquisition request command, such as obtaining a corresponding file list, and interpreting the execution result through the telnet/ssh encoder to perform encoding, and then sending to The first decoding unit (telnet/ssh decoder) of the transmitting device completes the display of the file list after performing the decoding.

As shown in FIGS. 4 and 5, after the transmitting device transmits the file list acquisition request and displays the corresponding file list locally on the sender, the transmitting device transmits the file transfer acquisition request again. The file acquisition request is encoded by the first coding unit into a character type that can be transmitted by telnet/ssh, and sent to the telnet/ssh decoder of the receiver, which decodes and executes the received command, and the receiver will interpret the execution result through it. The telnet/ssh encoder is encoded and returned to the sender.

As shown in FIG. 7, after acquiring the encoded file transmitted by the receiver, the first decoding unit 802 of the transmitting device performs second decoding on the encoded file acquired from the receiving side to restore the target file.

In addition, when the transmitting device wants to upload a file, it is basically the same as the process of downloading the file. The sending device sends a file transfer obtaining request, and the file transfer obtaining request passes through the first encoding unit 801. After being encoded as a character type that can be transmitted by telnet/ssh, it is sent to the receiver's telnet/ssh decoder, which decodes the command and completes the file transfer request.

Correspondingly, the embodiment of the present invention further provides a receiving apparatus, as shown in FIG. 9, for implementing file transmission on a transmission network divided into different subnets, and the transmission equipment in the transmission network supports telnet /ssh protocol, including:

The second decoding unit 901 is configured to: obtain a file transmission acquisition request that has been encoded into a telnet/ssh transmission, and perform a fifth decoding on the file transmission acquisition request;

The second encoding unit 902 is configured to: acquire an object file according to a fifth decoding execution result, and encode the target file into an encoded file that can be transmitted by telnet/ssh and send the encoded file to the sender, so that the sender pairs the encoding After the file performs the sixth decoding, the corresponding target file is restored.

Optionally, the receiving device further includes:

The determining unit 903 is configured to: after the second encoding unit performs encoding on the acquired target file according to the fifth decoding execution result, determine whether the first decoding execution result includes a file compression command;

The compressing unit 904 is configured to: perform encoding processing on the encoded file according to the file compression command.

Optionally, the second decoding unit 901 is further configured to: obtain a file list acquisition request that has been encoded to be telnet/ssh, and perform a seventh decoding on the file list acquisition request;

The second encoding unit 902 is further configured to: obtain a target file list according to the seventh decoding execution result, and encode the target file list into a file list file that can be transmitted by telnet/ssh and send the file to the sender, so as to send After performing the sixth decoding on the file list file, the file list is displayed.

The embodiment of the invention provides a file transmission system for implementing file transmission on a transmission network divided into different subnets, and the transmission device in the transmission network supports the telnet/ssh protocol, including:

The sender is configured to: encode the file transfer acquisition request into the first request information that can be transmitted by telnet/ssh and send the second request, and perform second decoding on the encoded file obtained from the receiver to restore the target file;

The receiving party is configured to: perform first decoding on the first request information, and encode the acquired target file into an encoded file that can be transmitted by telnet/ssh according to the first decoding execution result and return.

The receiving party is further configured to: after performing the encoding on the acquired target file according to the first decoding execution result, determining whether the size of the encoded file exceeds a preset threshold, and when determining that the preset threshold is exceeded, the encoding file is Perform compression processing.

The sender is further configured to: encode the file list acquisition request into the second request information that can be transmitted by telnet/ssh and send; further perform fourth decoding on the file list file acquired from the receiver, and display the file list ;

The receiving side is further configured to: perform third decoding on the second request information, and encode the obtained target file list into a file list file that can be transmitted by telnet/ssh according to the third decoding execution result and return.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Industrial applicability

The technical solution of the invention can realize the communication between the intranet and the b intranet, the communication between the intranet and the b outer network, and the communication between the external network and the b external network. In the specific implementation, the intermediate device of the transmission only needs to support the standard telnet/ssh protocol. The transmitting and receiving devices for transmission have the purpose of realizing file transmission across subnets by transmitting code and decoding functions by transmitting and decoding the telnet/ssh protocol. The problem of copying files to the equipment site is needed, which improves work efficiency. In some other embodiments, the technical solution of the present invention can not only transfer files, but also can transfer other data streams, thereby realizing the possibility of any data being transmitted through the telnet protocol. Therefore, the present invention has strong industrial applicability.

Claims

A file transmission method for implementing file transmission on a transmission network divided into different subnets, wherein the transmission device in the transmission network supports the telnet/ssh protocol, and the method includes:

The local end encodes the file transmission acquisition request into the first request information that can be transmitted by the telnet/ssh, and sends the first request information to the peer end, where the file transmission acquisition request includes the file name and the file path of the target file selected by the local end from the file list;

Performing a first decoding on the first request information at the opposite end, encoding the obtained target file corresponding to the first decoding execution result into an encoded file that can be transmitted by telnet/ssh, and returning the encoded file to the local end, The local end performs a second decoding on the received encoded file to restore the target file.
The file transfer method according to claim 1, wherein said encoded file is obtained by compressing said encoded file that can be transmitted by telnet/ssh.
The file transmission method according to claim 1, wherein before the step of encoding the file transmission acquisition request into the first request information that can be transmitted by the telnet/ssh and transmitting the information to the peer end, the method further includes:

Encoding the file list obtaining request into the second request information that can be transmitted by telnet/ssh and sending the request information to the peer end;

Performing third decoding on the second request information at the opposite end, and encoding the obtained target file list corresponding to the third decoding execution result into a file list file that can be transmitted by telnet/ssh and listing the encoded file. After the file returns to the local end, the local end performs fourth decoding on the received file list file, and displays the file list.
A file transmission method for implementing file transmission on a transmission network divided into different subnets, wherein the transmission device in the transmission network supports the telnet/ssh protocol, and the method includes:

Obtaining, by the peer end, the encoded file transfer request that can be transmitted by the telnet/ssh, where the file transfer request includes a file name and a file path of the target file selected by the peer from the file list;

Performing a first decoding on the file transmission acquisition request to obtain a first decoding execution result, where the first decoding execution result includes a file name and a file path of the target file to be acquired;

After acquiring the target file according to the first decoding execution result, the local end encodes the target file into an encoded file that can be transmitted by telnet/ssh, and sends the encoded file to the opposite end, so that the opposite end encodes the encoded file. After the file performs the second decoding, the target file is restored.
The file transfer method according to claim 4, wherein after the step of encoding the object file into an encoded file that can be transmitted by telnet/ssh, the method further comprises:

Determining whether the size of the encoded file exceeds a preset threshold, and performing a compression process on the encoded file when determining that the size of the encoded file exceeds a preset threshold.
The file transfer method according to claim 4, wherein the step of obtaining the encoded file transfer request that can be transmitted by the telnet/ssh from the peer end further comprises:

Obtaining a coded list of files that can be transmitted by telnet/ssh to obtain a request;

Performing a third decoding on the file list obtaining request, acquiring a target file list according to the third decoding execution result, and encoding the target file list into a file list file that can be transmitted by telnet/ssh and transmitting the file list file to the opposite end, so that After the peer performs the fourth decoding on the file list file, the file list is displayed.
A transmitting device, configured to implement file transmission on a transmission network divided into different subnets, wherein the transmission device in the transmission network supports a telnet/ssh protocol, including a first coding unit and a first decoding unit, where:

The first encoding unit is configured to: encode a file transfer obtaining request into a first request information that can be transmitted by telnet/ssh, and the file transfer obtaining request includes a file name and a file of the target file selected from the file list. path;

The first decoding unit is configured to: perform a first decoding on the first request information on the receiving side, and encode the acquired target file corresponding to the first decoding execution result into an encoded file that can be transmitted by telnet/ssh and After returning the encoded file to the transmitting device, performing second decoding on the received encoded file to restore the target file.
The transmitting device according to claim 7, wherein

The first encoding unit is further configured to: encode the file list acquisition request into a The second request information transmitted by telnet/ssh is sent;

The first decoding unit is further configured to: perform a third decoding on the second request information by the receiver, and encode the obtained target file list corresponding to the third decoding execution result into a file that can be transmitted by telnet/ssh After the list file returns the encoded file list file to the transmitting device, a fourth decoding is performed on the obtained file list file to display the file list.
a receiving device, configured to implement file transmission on a transmission network divided into different subnets, wherein the transmission device in the transmission network supports a telnet/ssh protocol, where the second decoding unit and the second coding unit are included, among them:

The second decoding unit is configured to: acquire a file transmission acquisition request that has been encoded to be telnet/ssh, and perform a first decoding on the file transmission acquisition request to obtain a first decoding execution result; The file transfer request includes a file name and a file path of the target file selected by the peer from the file list, where the first decoding execution result includes a file name and a file path of the target file to be acquired;

The second encoding unit is configured to: acquire an object file according to a first decoding execution result, and encode the target file into an encoded file that can be transmitted by telnet/ssh, and send the encoded file to a sender, so as to send After performing the second decoding on the encoded file, the target file is restored.
The receiving device according to claim 9, further comprising a judging unit and a compressing unit, wherein:

The determining unit is configured to: after the second encoding unit encodes the target file into an encoded file that can be transmitted by telnet/ssh, determine whether the size of the encoded file exceeds a preset threshold, and determines that the preset threshold is exceeded. Sending a file compression command to the compression unit;

The compression unit is configured to perform a compression process on the encoded file according to the file compression command.
The receiving device according to claim 9, wherein

The second decoding unit is further configured to: obtain a file list acquisition request that has been encoded into a telnet/ssh transmission, and perform a third decoding on the file list acquisition request;

The second coding unit is further configured to: obtain a target file list according to the third decoding execution result, And encoding the target file list into a file list file that can be transmitted by telnet/ssh and sending the encoded file list file to the sender, so that the sender performs the fourth decoding on the file list file, and displays the A list of files.
A file transmission system for implementing file transmission on a transmission network divided into different subnets, the transmission device in the transmission network supporting the telnet/ssh protocol, including a sender and a receiver, wherein:

The sender is configured to: encode a file transmission acquisition request into a first request information that can be transmitted by telnet/ssh, and the file transmission acquisition request includes a file of the target file selected by the sender from the file list. Name and file path; and performing a second decoding on the encoded file obtained from the recipient to restore the target file;

The receiving party is configured to: perform a first decoding on the first request information, and obtain a first decoding execution result, where the first decoding execution result includes a file name and a file path of the target file to be acquired; The target file corresponding to the first decoding execution result is encoded, and the acquired object file is encoded into an encoded file that can be transmitted by telnet/ssh and returned to the sender.
The file transmission system according to claim 12, wherein the receiving party is further configured to: after performing encoding on the acquired target file according to the first decoding execution result, determining whether the size of the encoded file exceeds a preset threshold, and determining When the predetermined threshold is exceeded, a compression process is performed on the encoded file.
A file transmission system according to claim 12, wherein

The sender is further configured to: encode the file list acquisition request into the second request information that can be transmitted by telnet/ssh and send; further perform fourth decoding on the file list file acquired from the receiver, and display the file list ;

The receiving side is further configured to: perform third decoding on the second request information, obtain a third decoding execution result, acquire an object file corresponding to the third decoding execution result, and encode the obtained target file list into a A file list file transmitted by telnet/ssh and returning the encoded file list file to the sender.
A computer program comprising program instructions that, when executed by a sender, cause the sender to perform the file transfer method of any of claims 1-3.
A carrier carrying the computer program of claim 15.
A computer program comprising program instructions that, when executed by a recipient, cause the recipient to perform the file transfer method of any of claims 4-6.
A carrier carrying the computer program of claim 17.