Unlock instant, AI-driven research and patent intelligence for your innovation.

FTP data transmission method and device, information interaction system between server and client

A client-side and server-side technology, applied in the field of information exchange systems, can solve the problem of FTP data cannot be transmitted, and achieve the effect of enhancing network adaptability

Active Publication Date: 2022-05-03
BEIJING LIKONG HUACON TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the FTP data part of the simple port proxy mode in the prior art cannot be transmitted, thereby providing an FTP data transmission method and device, an information interaction system between the server and the client

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • FTP data transmission method and device, information interaction system between server and client
  • FTP data transmission method and device, information interaction system between server and client
  • FTP data transmission method and device, information interaction system between server and client

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides an information interaction system between a server and a client, which is applied to the passive transfer mode of the FTP protocol. The system includes an FTP client 10, an FTP server 40, and an isolation device 30. The isolation device 30 includes: proxy FTP service Terminal 31 and proxy FTP client 32, such as figure 1 As shown, the IP address information of the FTP client 10 is: 192.168.0.101, the IP address information of the proxy FTP server 31 is: 192.168.0.102, the IP address information of the proxy FTP client 32 is: 192.168.1.101, and the FTP server The IP address information of 40 is: 192.168.1.102, including the following steps:

[0032] The proxy FTP server 31 receives the fifth connection request sent by the FTP client 10 , and sends passive mode command link connection notification information to the proxy FTP client 32 , notifying the proxy FTP client 32 to establish a connection with the FTP server 40 .

[0033] The proxy FTP ser...

Embodiment 2

[0055] The embodiment of the present invention provides an information interaction system between a server and a client, which is applied to the active transmission mode of the FTP protocol. The system includes an FTP client 10, an FTP server 40, and an isolation device 30. The isolation device 30 includes: proxy FTP Server 31 and proxy FTP client 32, such as figure 2 As shown, the IP address information of the FTP client 10 is: 192.168.0.101, the IP address information of the proxy FTP server 31 is: 192.168.0.102, the IP address information of the proxy FTP client 32 is: 192.168.1.101, and the FTP server The IP address information of 40 is: 192.168.1.102, including the following steps:

[0056] The proxy FTP server 31 receives the active mode command link connection notification information sent by the FTP client 10, and sends a sixth connection request to the FTP server 40 according to the active mode command link connection notification information.

[0057] Acting FTP se...

Embodiment 3

[0074] The embodiment of the present invention discloses an FTP data transmission method, which is applied to a proxy FTP server, such as image 3 shown, including the following steps:

[0075] S31: Receive the active mode command packet sent by the FTP client, and send the active mode command packet to the proxy FTP client; the active mode command packet includes active mode IP address information and active mode dynamic port information; see The corresponding steps in Embodiment 2 are not repeated here.

[0076] S32: Receive the active mode link creation notification information sent by the proxy FTP client, and create a temporary proxy TCP client according to the active mode link creation notification information; see the corresponding steps in Embodiment 2 for the specific implementation, and will not repeat them here.

[0077] S33: Receive the active mode link connection notification information sent by the proxy FTP client, and establish a connection with the FTP client...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an FTP data transmission method and device, and an information interaction system between a server and a client, wherein the FTP data transmission method includes: receiving an active mode command data packet sent by an FTP client, and sending the active mode command data packet Sent to the agent FTP client, the active mode command packet includes active mode IP address information and active mode dynamic port information; receiving the active mode link creation notification information sent by the agent FTP client, according to the active mode link Path creation notification information creates a temporary proxy TCP client; receives the active mode link connection notification information sent by the proxy FTP client, according to the active mode link connection notification information, through the temporary proxy TCP client and the described The FTP client establishes a connection.

Description

technical field [0001] The invention relates to the technical field of file transmission, in particular to an FTP data transmission method and device, and an information interaction system between a server and a client. Background technique [0002] The FTP protocol is designed based on the "client / server" model, and the connection between the client and the server is established through TCP. Different from other "client / server" models, the FTP client and server need to establish a double connection, one is a control connection and the other is a data connection. The control connection is responsible for transmitting control information, especially client commands (such as file transfer commands, etc.), using control commands, the client can make multiple requests to the server (one request is a client command). Every time the client makes a request, the server establishes a data connection with the client for actual data (such as file) transmission. [0003] In related te...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L67/06H04L67/141H04L67/56H04L69/22
CPCH04L67/06H04L69/08H04L69/06H04L67/56
Inventor 王刚谷永国
Owner BEIJING LIKONG HUACON TECH