CN109379447A - A kind of document down loading method and system - Google Patents
A kind of document down loading method and system Download PDFInfo
- Publication number
- CN109379447A CN109379447A CN201811595601.6A CN201811595601A CN109379447A CN 109379447 A CN109379447 A CN 109379447A CN 201811595601 A CN201811595601 A CN 201811595601A CN 109379447 A CN109379447 A CN 109379447A
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- data
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- application server
- communication connection
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/143—Termination or inactivation of sessions, e.g. event-controlled end of session
- H04L67/145—Termination or inactivation of sessions, e.g. event-controlled end of session avoiding end of session, e.g. keep-alive, heartbeats, resumption message or wake-up for inactive or interrupted session
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/06—Protocols specially adapted for file transfer, e.g. file transfer protocol [FTP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/14—Session management
- H04L67/141—Setup of application sessions
Abstract
The embodiment of the invention provides a kind of document down loading method and systems, which comprises receives the data packet for terminating data or file data including heartbeat data or heartbeat that application server is sent；In the case where data packet includes heartbeat data, the first communication connection between client and application server is kept to be in unactivated state；In the case where data packet includes that heartbeat terminates data, the first communication connection between client and application server is activated；In the case where data packet includes file data, the file data that application server is sent is received by the first communication connection, file data is obtained from the file server by second communication connection.The communication connection between client and application server can be kept by heartbeat data packets, when application server being avoided to obtain the biggish file of data volume from file server, the problem of time-out leads to failed download.
Description
Technical field
The present invention relates to network technique fields, more particularly to a kind of document down loading method and system.
Background technique
In network system, user obtains data by the application server that client accesses distal end, wherein the one of data
Kind canonical form is file.
In the prior art, the key step of file download includes: firstly, client sends file download to application server
Request；Then, application server carries out the backward file server parsed to downloading request and obtains file data；Finally, answering
File data is back to client with server.
However, application server obtains file data from file server will appear time-out when file data is more
Situation causes client to obtain file data failure.
Summary of the invention
In view of the above problems, the present invention is proposed in order to provide solving the above problems or at least being partially solved above-mentioned ask
A kind of document down loading method and system of topic.
According to the present invention in a first aspect, provide a kind of document down loading method, be applied to client, the client with
Application server first communicates to connect, and the application server and file server second communicate to connect, which comprises
Receive the data packet that the application server is sent, the data packet include: heartbeat data, heartbeat terminate data,
One of file data type；
In the case where the data packet includes heartbeat data, keep between the client and the application server
First communication connection is in unactivated state；
In the case where the data packet includes that heartbeat terminates data, activate the client and the application server it
Between first communication connection；
In the case where the data packet includes file data, the application service is received by first communication connection
The file data that device is sent, the file data are obtained from the file server by second communication connection.
Optionally, in the step for receiving the file data that the application server is sent by first communication connection
After rapid, the method also includes:
The file data is decrypted according to the identification information of the client.
Optionally, in the step for receiving the file data that the application server is sent by first communication connection
After rapid, the method also includes:
The first communication connection between the client and the application server is disconnected, first communication connection is in institute
It states before client sends file download request to the application server and establishes.
Optionally, the application server is after receiving the file download request, according to prefixed time interval to
The client sends heartbeat data.
Optionally, the application server encrypts the file data according to the identification information of the client, described
Identification information includes: at least one of client ip address, subscriber identity information.
According to another aspect of the present invention, a kind of happy file download system is provided, the system comprises client, using clothes
Business device, file server, the client and the application server first communicate to connect, the application server and the text
Part server second communicates to connect, and the client includes:
Packet-receiving module, the data packet sent for receiving the application server, the data packet includes: heartbeat
Data, heartbeat terminate one of data, file data type；
First communication connection keeps module, for keeping the visitor in the case where the data packet includes heartbeat data
The first communication connection between family end and the application server is in unactivated state；
First communication connection active module, for activating institute in the case where the data packet includes that heartbeat terminates data
State the first communication connection between client and the application server；
File data packet download module, in the case where the data packet includes the file data, by described
First communication connection receives the file data that the application server is sent, and the file data is communicated to connect by described second
It is obtained from the file server.
Optionally, the client further include:
Deciphering module, for the file data to be decrypted according to the identification information of the client.
Optionally, the system also includes:
First communication connection disconnects module, communicates for disconnecting first between the client and the application server
Connection, first communication connection are established before the client sends file download request to the application server.
Optionally, the application server includes:
Heartbeat data packets sending module, for after receiving the file download request, according to prefixed time interval
Heartbeat data is sent to the client.
Optionally, the application server includes:
Encrypting module, for being encrypted according to the identification information of the client to the file data, the identification information
It include: at least one of client ip address, subscriber identity information.
The embodiment of the present invention has the advantages that
A kind of document down loading method according to an embodiment of the present invention and system, which comprises receive the application clothes
It is engaged in the data packet that device sends, the data packet includes: that heartbeat data, heartbeat terminate one of data, file data type；?
In the case that the data packet includes heartbeat data, the first communication link between the client and the application server is kept
It connects in unactivated state；In the case where the data packet includes that heartbeat terminates data, the client is activated to answer with described
With the first communication connection between server；In the case where the data packet includes file data, communicated by described first
Connection receives the file data that the application server is sent, and the file data is communicated to connect by described second from the text
It is obtained in part server.The communication connection between client and application server can be kept by heartbeat data packets, avoid answering
When the biggish file of data volume is obtained from file server with server, the problem of time-out leads to failed download.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, the followings are specific embodiments of the present invention.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows a kind of step flow chart of document down loading method embodiment one according to the present invention；
Fig. 2 shows a kind of step flow charts of document down loading method embodiment two according to the present invention；
Fig. 3 shows a kind of structural block diagram of file download system embodiment three according to the present invention；
Fig. 4 shows a kind of structural block diagram of file download system example IV according to the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Embodiment one
Referring to Fig.1, a kind of step flow chart of document down loading method embodiment one according to the present invention is shown, is applied to
Client, the client and application server first communicate to connect, and the application server is communicated with file server second
Connection, can specifically include following steps:
Step 101, the data packet that the application server is sent is received, the data packet includes: heartbeat data, heartbeat knot
One of beam data, file data type.
Wherein, heartbeat data can be the data of specified format and content, or empty content, for maintaining client
Communication connection between application server.Application server is sent out after the first communication connection is established according to certain time interval
Send heartbeat data.
It can be to be different from other data of heartbeat data that heartbeat, which terminates data, be also used for indicating that application server has obtained
File data is got, and prepares to return to client.Application server after getting file data in file server,
Stop sending heartbeat data, and send heartbeat to terminate data, to prompt client to prepare to receive file data.
File data is the business datum of user's request.Application server is after sending heartbeat end signal, to client
End sends file data.
It is appreciated that in order to reduce network overhead, the data volume that heartbeat data and heartbeat terminate data is smaller as far as possible.
In addition, three kinds of data all have header packet information, containing type information in header packet information, for distinguishing three types
Data.Type information can be indicated using numerical value, can also be indicated using enumerated value.For example, 0 represents heartbeat data, 1 represents the heart
Jumping terminates data, and 2 represent file data.Certainly, type information can be set according to practical application scene, the embodiment of the present invention pair
Its is without restriction.
The embodiment of the present invention is applied to client, and client can be for mobile terminal, computer etc., and application server can be with
To provide the remote server of business, for example, the corresponding background server of application program, file server is used for storage file number
According to.Application server is communicated to connect with client, file server by realizations such as wireless network, cable networks respectively.
Step 102, in the case where the data packet includes heartbeat data, the client and the application service are kept
The first communication connection between device is in unactivated state.
Wherein, do not transmit file data under unactivated state, when first communication connection be initialized as after initialization it is non-
State of activation.
It specifically, whether can be the corresponding type mark of heartbeat data packets according to the type information in packet header information
Know.For example, then the data packet includes heartbeat data when the type information in packet header information is 0；When packet header is believed
Type information in breath is not 0, then the data packet does not include heartbeat data.
Step 103, in the case where the data packet includes that heartbeat terminates data, the client and the application are activated
The first communication connection between server.
Wherein, the first communication connection of activation, which refers to, is revised as activation shape from unactivated state for the state of activation of communication connection
State, to prepare to receive file data.
It specifically, whether can be that heartbeat terminates the corresponding class of data packet according to the type information in packet header information
Type mark.For example, then the data packet includes that heartbeat terminates data when the type information in packet header information is 1；Work as data
Type information in packet header packet information is not 1, then the data packet does not include that heartbeat terminates data.
Step 104, in the case where the data packet includes file data, by described in the first communication connection reception
The file data that application server is sent, the file data are obtained from the file server by second communication connection
It takes.
It specifically, whether can be the corresponding type mark of file data packet according to the type information in packet header information
Know.For example, then the data packet includes file data when the type information in packet header information is 2；When packet header is believed
Type information in breath is not 2, then the data packet does not include file data.
In embodiments of the present invention, after the first communication connection is activated, i.e., in the first communication connection in activation shape
File data is received under state.
A kind of document down loading method according to the present invention and system, which comprises receive the application server hair
The data packet sent, the data packet include: that heartbeat data, heartbeat terminate one of data, file data type；In the number
In the case where including heartbeat data according to packet, keeps first between the client and the application server to communicate to connect and be in
Unactivated state；In the case where the data packet includes that heartbeat terminates data, the client and the application service are activated
The first communication connection between device；In the case where the data packet includes file data, connect by described first
The file data that the application server is sent is received, the file data is communicated to connect by described second from the file service
It is obtained in device.The communication connection between client and application server can be kept by heartbeat data packets, avoid application service
When device obtains the biggish file of data volume from file server, the problem of time-out leads to failed download.
Embodiment two
Referring to Fig. 2, a kind of step flow chart of document down loading method embodiment two according to the present invention is shown, is applied to
Client, the client and application server first communicate to connect, and the application server is communicated with file server second
Connection, can specifically include following steps:
Step 201, the data packet that the application server is sent is received, the data packet includes: heartbeat data, heartbeat knot
One of beam data, file data type.
The step is referred to the detailed description of step 101, and details are not described herein.
Optionally, in another embodiment of the invention, the application server is believed according to the mark of the client
Breath encrypts the file data, and the identification information includes: at least one of client ip address, subscriber identity information.
Wherein, it is automatic to obtain or be arranged when client ip address can connect wireless network or cable network for client
Network address.
Subscriber identity information can log in the account information used when the corresponding application of application server, Ke Yiwei for user
Mailbox, telephone number or other identification informations.
The embodiment of the present invention can pass through preset encryption rule pair according to the identification information of client as code key
File data is encrypted, so that the file data of downloading can be decrypted by only sending the client of request, is helped
In the safety for guaranteeing file data.
Step 202, in the case where the data packet includes heartbeat data, the client and the application service are kept
The first communication connection between device is in unactivated state.
The step is referred to the detailed description of step 102, and details are not described herein.
Step 203, in the case where the data packet includes that heartbeat terminates data, the client and the application are activated
The first communication connection between server.
The step is referred to the detailed description of step 103, and details are not described herein.
Step 204, in the case where the data packet includes file data, by described in the first communication connection reception
The file data that application server is sent, the file data are obtained from the file server by second communication connection
It takes.
The step is referred to the detailed description of step 104, and details are not described herein.
Step 205, the file data is decrypted according to the identification information of the client.
In embodiments of the present invention, after the decryption by document presentation to user.
For the Encryption Algorithm of application server in step 201, client is using its identification information to the number of files of downloading
According to being decrypted, so that the file data of the client downloads can be decrypted by realizing client to the greatest extent, guarantee the safety of file data
Property.
Step 206, the first communication connection between the client and the application server, first communication are disconnected
It is connected to before the client sends file download request to the application server and establishes.
Wherein, file download request is the request that client request downloads file data, and client letter is carried in request
The information of breath and file destination data.Wherein, client-side information returns to number after application server has downloaded file data
According to when use；The information of file destination data is that application server is used when obtaining file data to file server.
The embodiment of the present invention can disconnect the first communication connection after file download completion, reduce network and occupy, so that
Network is other client services, improves file download success rate.
Optionally, in another embodiment of the invention, the application server is asked receiving the file download
After asking, heartbeat data is sent to the client according to prefixed time interval.
Wherein, time interval can be set according to practical application scene, and time interval is smaller, and network overhead is bigger；Time
Interval is bigger, and network overhead is smaller.
The embodiment of the present invention can by continuously transmit heartbeat data packets keep between client and application server the
One communication connection avoids downloading large file from leading to connection time-out, failed download.
A kind of document down loading method according to the present invention and system, which comprises receive the application server hair
The data packet sent, the data packet include: that heartbeat data, heartbeat terminate one of data, file data type；In the number
In the case where including heartbeat data according to packet, keeps first between the client and the application server to communicate to connect and be in
Unactivated state；In the case where the data packet includes that heartbeat terminates data, the client and the application service are activated
The first communication connection between device；In the case where the data packet includes file data, connect by described first
The file data that the application server is sent is received, the file data is communicated to connect by described second from the file service
It is obtained in device.The communication connection between client and application server can be kept by heartbeat data packets, avoid application service
When device obtains the biggish file of data volume from file server, the problem of time-out leads to failed download.
Embodiment three
Referring to Fig. 3, a kind of structural block diagram of file download system embodiment three according to the present invention, the system are shown
Including client 301, application server 302, file server 303, the client 301 and the application server 302 the
One communication connection, the application server 302 are communicated to connect with the file server 303 second, and the client 301 is wrapped
It includes:
Packet-receiving module 3011, the data packet sent for receiving the application server, the data packet include:
Heartbeat data, heartbeat terminate one of data, file data type.
First communication connection keeps module 3012, for keeping institute in the case where the data packet includes heartbeat data
The first communication connection between client and the application server is stated in unactivated state.
First communication connection active module 3013, for swashing in the case where the data packet includes that heartbeat terminates data
The first communication connection between the client living and the application server.
File data packet download module 3014, for passing through in the case where the data packet includes the file data
First communication connection receives the file data that the application server is sent, and the file data is communicated by described second
Connection is obtained from the file server.
A kind of document down loading method according to the present invention and system, the system comprises client, application server, files
Server, the client and the application server first communicate to connect, the application server and the file server
Second communication connection, the client includes: packet-receiving module, the data sent for receiving the application server
Packet, the data packet include: that heartbeat data, heartbeat terminate one of data, file data type；First communication connection is kept
Module, for keeping between the client and the application server in the case where the data packet includes heartbeat data
First communication connection be in unactivated state；First communication connection active module, for including heartbeat knot in the data packet
In the case where beam data, first between the client and the application server is activated to communicate to connect；Under file data packet
Module is carried, for being communicated to connect described in receiving by described first in the case where the data packet includes the file data
The file data that application server is sent, the file data are obtained from the file server by second communication connection
It takes.The communication connection between client and application server can be kept by heartbeat data packets, avoid application server from text
When obtaining the biggish file of data volume in part server, the problem of time-out leads to failed download.
Example IV
Referring to Fig. 4, a kind of structural block diagram of file download system example IV according to the present invention, the system are shown
Including client 401, application server 402, file server 403, the client 401 and the application server 402 the
One communication connection, the application server 402 are communicated to connect with the file server 403 second, and the client 401 is wrapped
It includes:
Packet-receiving module 4011, the data packet sent for receiving the application server, the data packet include:
Heartbeat data, heartbeat terminate one of data, file data type.
First communication connection keeps module 4012, for keeping institute in the case where the data packet includes heartbeat data
The first communication connection between client and the application server is stated in unactivated state.
First communication connection active module 4013, for swashing in the case where the data packet includes that heartbeat terminates data
The first communication connection between the client living and the application server.
File data packet download module 4014, for passing through in the case where the data packet includes the file data
First communication connection receives the file data that the application server is sent, and the file data is communicated by described second
Connection is obtained from the file server.
First communication connection disconnects module 4015, for disconnecting first between the client and the application server
Communication connection, first communication connection are built before the client sends file download request to the application server
It is vertical.
Deciphering module 4016, for the file data to be decrypted according to the identification information of the client.
Optionally, in embodiments of the present invention, the application server 402, comprising:
Heartbeat data packets sending module 4021, for after receiving the file download request, according to preset time
It is spaced to the client and sends heartbeat data.
Optionally, in embodiments of the present invention, the application server 402 includes:
Encrypting module 4022, for being encrypted according to the identification information of the client to the file data, the mark
Information includes: at least one of client ip address, subscriber identity information.
A kind of document down loading method according to the present invention and system, the system comprises client, application server, files
Server, the client and the application server first communicate to connect, the application server and the file server
Second communication connection, the client includes: packet-receiving module, the data sent for receiving the application server
Packet, the data packet include: that heartbeat data, heartbeat terminate one of data, file data type；First communication connection is kept
Module, for keeping between the client and the application server in the case where the data packet includes heartbeat data
First communication connection be in unactivated state；First communication connection active module, for including heartbeat knot in the data packet
In the case where beam data, first between the client and the application server is activated to communicate to connect；Under file data packet
Module is carried, for being communicated to connect described in receiving by described first in the case where the data packet includes the file data
The file data that application server is sent, the file data are obtained from the file server by second communication connection
It takes.The communication connection between client and application server can be kept by heartbeat data packets, avoid application server from text
When obtaining the biggish file of data volume in part server, the problem of time-out leads to failed download.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
Algorithm and display are not inherently related to any particular computer, virtual system, or other device provided herein.
Various general-purpose systems can also be used together based on this teaching.As described above, structure required by this kind of system is constructed
It is obvious.In addition, the present invention is also not directed to any particular programming language.It should be understood that can use various programming languages
Speech realize summary of the invention described herein, and the description that language-specific is done above be in order to disclose it is of the invention most
Good embodiment.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention
Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail
And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects,
Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following
Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as a separate embodiment of the present invention.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment
Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment
Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or
Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any
Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed
All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power
Benefit requires, abstract and attached drawing) disclosed in each feature can be by providing identical, equivalent, or similar purpose alternative features come generation
It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
Meaning one of can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors
Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice
Microprocessor or digital signal processor (DSP) come realize some in file download equipment according to an embodiment of the present invention or
The some or all functions of person's whole component.The present invention is also implemented as one for executing method as described herein
Point or whole device or device programs (for example, computer program and computer program product).Such this hair of realization
Bright program can store on a computer-readable medium, or may be in the form of one or more signals.It is such
Signal can be downloaded from an internet website to obtain, and is perhaps provided on the carrier signal or is provided in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability
Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such
Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real
It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch
To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame
Claim.
Claims (10)
1. a kind of document down loading method is applied to client, the client and application server first are communicated to connect, described to answer
It is communicated to connect with server and file server second, which is characterized in that the described method includes:
Receive the data packet that the application server is sent, the data packet includes: that heartbeat data, heartbeat terminate data, file
One of data type；
In the case where the data packet includes heartbeat data, first between the client and the application server is kept
Communication connection is in unactivated state；
In the case where the data packet includes that heartbeat terminates data, activate between the client and the application server
First communication connection；
In the case where the data packet includes file data, the application server is received by first communication connection and is sent out
The file data sent, the file data are obtained from the file server by second communication connection.
2. the method according to claim 1, wherein described by being answered described in the first communication connection reception
After the step of file data sent with server, the method also includes:
The file data is decrypted according to the identification information of the client.
3. the method according to claim 1, wherein described by being answered described in the first communication connection reception
After the step of file data sent with server, the method also includes:
The first communication connection between the client and the application server is disconnected, first communication connection is in the visitor
Family end is established before sending file download request to the application server.
4. according to the method described in claim 3, it is characterized in that, the application server is asked receiving the file download
After asking, heartbeat data is sent to the client according to prefixed time interval.
5. according to the method described in claim 2, it is characterized in that, the application server is believed according to the mark of the client
Breath encrypts the file data, and the identification information includes: at least one of client ip address, subscriber identity information.
6. a kind of file download system, the system comprises client, application server, file server, the client with
The application server first communicates to connect, and the application server and the file server second communicate to connect, feature
It is, the client includes:
Packet-receiving module, the data packet sent for receiving the application server, the data packet includes: beats
Terminate one of data, file data type according to, heartbeat；
First communication connection keeps module, for keeping the client in the case where the data packet includes heartbeat data
The first communication connection between the application server is in unactivated state；
First communication connection active module, for activating the visitor in the case where the data packet includes that heartbeat terminates data
The first communication connection between family end and the application server；
File data packet download module, for passing through described first in the case where the data packet includes the file data
Communication connection receives the file data that the application server is sent, and the file data is communicated to connect by described second from institute
It states in file server and obtains.
7. system according to claim 6, which is characterized in that the client further include:
Deciphering module, for the file data to be decrypted according to the identification information of the client.
8. system according to claim 6, which is characterized in that the system also includes:
First communication connection disconnects module, for disconnecting the first communication link between the client and the application server
It connects, first communication connection is established before the client sends file download request to the application server.
9. system according to claim 8, which is characterized in that the application server includes:
Heartbeat data packets sending module, for after receiving the file download request, according to prefixed time interval to institute
It states client and sends heartbeat data.
10. system according to claim 7, which is characterized in that the application server includes:
Encrypting module, for being encrypted according to the identification information of the client to the file data, the identification information includes:
At least one of client ip address, subscriber identity information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595601.6A CN109379447A (en) | 2018-12-25 | 2018-12-25 | A kind of document down loading method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| US20150304392A1 (en) * | 2012-10-31 | 2015-10-22 | China Unionpay Co., Ltd. | File transmission method and system thereof |
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| CN102036349A (en) * | 2009-09-29 | 2011-04-27 | 联想(北京)有限公司 | Method for maintaining connection of terminal and network server, terminal and network server |
| US20150304392A1 (en) * | 2012-10-31 | 2015-10-22 | China Unionpay Co., Ltd. | File transmission method and system thereof |
| CN106936868A (en) * | 2015-12-30 | 2017-07-07 | 北京明朝万达科技股份有限公司 | A kind of application system data security protection method combined with cloud storage and system |
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Application publication date: 20190222 |