CN106888228A - Method, conversation controller and the system accelerated for content - Google Patents
Method, conversation controller and the system accelerated for content Download PDFInfo
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- CN106888228A CN106888228A CN201510930386.0A CN201510930386A CN106888228A CN 106888228 A CN106888228 A CN 106888228A CN 201510930386 A CN201510930386 A CN 201510930386A CN 106888228 A CN106888228 A CN 106888228A
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- buffer memory
- memory device
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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
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/568—Storing data temporarily at an intermediate stage, e.g. caching
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
Abstract
The invention discloses a kind of method, conversation controller and system accelerated for content, it is related to data communication field.Wherein method includes：Receive the content request message of the user terminal transmission that discharge device is replicated；Content request message is forwarded to buffer memory device；The response message that order caching equipment sends；When response message is judged for request response, then the response message is abandoned；When response message is judged for content response message, then response message is sent to user terminal, and the first replacement message is sent to content providing corresponding with content request message, so that content providing is according to the first connection for resetting message disconnection and user terminal.The present invention replicates user terminal to the session content of content providing by discharge device, realizes content acceleration.When buffer memory device has the content of request, user's request is preempted response, it is achieved thereby that content accelerates, improves Consumer's Experience.
Description
Technical field
The present invention relates to data communication field, more particularly to a kind of method accelerated for content,
Conversation controller and system.
Background technology
With the development of internet, the increase of data traffic, requirement of the user to network speed
More and more higher.Thus, internet content accelerates service to arise at the historic moment.In existing internet
Hold in accelerating to service, content caching technology act as highly important role.Content caching technology
Video, webpage and the App (Application, using journey that will can be frequently visited by the user
Sequence) etc. data be saved on the buffer memory device nearest from user, so as to greatly improve user visit
Ask the speed of website, save network traffics, reduce website load, especially data volume compared with
Big internet video business effect is more significantly.
CDN (Content Delivery Network, content distributing network) is a kind of use
Caching technology come be SP (Service Provider, service provider) service network technology,
Be pushed to the certain content of SP from the newest node of user by it, improves user and accesses SP
The service quality of website.But, the deployment way of CDN is to solve CDN edges section
Point still exists to the flow congestion problem between SP source stations between fringe node and user
A certain distance, it is different that this partial distance includes Metropolitan Area Network (MAN), access network or mobile network etc.
Network segment.The resource of above-mentioned network segment generally will not be externally sold due to common carrier, thus
Other are not that the CDN node of the common carrier cannot then be disposed wherein.This part
The flow congestion problems demand of network segment is solved.Equally, CDN node cannot also extend to tool
In the enterprise network of backup firewall, in the stream that the peak period of accessed enterprise internet, enterprise network occur
Amount congestion problems are also urgently to be resolved hurrily.
At the same time, when the Internet user of certain common carrier is largely frequently accessed in another
During SP source stations in one operator, the inter-network settlement rule between operator causes internet
The loss of the common carrier where user is larger, thus operator wishes to need from it as far as possible
The flow restriction that his operator obtains is in its net.Based on the reason for identical, operator also is intended to
As far as possible by overseas flow restriction at home.
In the prior art, in order to solve the above problems, many operators and enterprise use independent portion
The mode of transparent caching is affixed one's name to, i.e., by DNS (Domain Name System, domain name system)
Redirect or HTTP (HyperText Transfer Protocol, HTTP)
Be dispatched to user access request on buffer memory device by the mode of redirection, then is provided by buffer memory device
Content service.
But when DNS is redirected, DNS scheduling system is provided with white list, if user
Domain name is accessed in white list, then user's request can be scheduled on buffer memory device, user owns
URL (Uniform Resoure Locator, uniform resource locator) under this domain name is visited
Ask all is carried out by this buffer memory device, so a large amount of uncached contents will also be set by this caching
Standby conduct is acted as export agent, so, with regard to bringing new problem：On the one hand increased buffer memory device
Burden, another aspect agent service is also due to the safety between operator's net and internet sets
Put and Quality Down.
In HTTP redirection, HTTP scheduling system judge user access content whether
Exist on buffer memory device, if there is then by being similar to temporary transfer (Temporarily
Moved) 302 modes for redirecting are redirected on buffer memory device, so, a large amount of when existing
During the caching of small documents, this mode will substantially reduce the service efficiency of buffer memory device, in addition,
The redirection of 302 modes introduces the extra response time, reduces Consumer's Experience.
The content of the invention
The inventors found that above-mentioned have problem in the prior art, and therefore for upper
State at least one of problem problem and propose a kind of new technical scheme.
According to an aspect of the present invention, a kind of method accelerated for content is disclosed, including：
Receive the content request message of the user terminal transmission that discharge device is replicated；
Content request message is forwarded to buffer memory device；
The response message that order caching equipment sends；
When response message is judged for request response, then response message is abandoned；When judgement rings
Answer message be content response message when, then response message is sent to user terminal, and to it is interior
Hold the corresponding content providing of request message and send the first replacement message, set so that content is provided
The standby connection that message disconnection and user terminal are reset according to first.
In one embodiment, the source address of content request message is the address of user terminal, mesh
Address for content providing address；
Content request message is forwarded into buffer memory device includes：
The destination address of content request message is changed to be sent behind the address of buffer memory device to slow
Deposit equipment.
In one embodiment, the source address of response message is the address of buffer memory device, destination
Location is the address of user terminal；
When response message is judged for content response message, then response message was sent to user's end
End, and send the first replacement message package to content providing corresponding with content request message
Include：
When response message is judged for content response message, the source address of response message is changed to
Sent behind the address of content providing to user terminal；
First is sent to content providing corresponding with content request message reset message, first
The source address for resetting message is the address of user terminal, and destination address is the ground of content providing
Location.
In one embodiment, when it is without hit content-message to judge response message, then will ring
Answer message to abandon, and to buffer memory device send second reset message, so as to buffer memory device disconnect with
The connection of user terminal, wherein the second source address for resetting message is the address of user terminal, mesh
Address for buffer memory device address.
In one embodiment, please in the content for receiving the user terminal transmission that discharge device is replicated
Before the step of seeking message, the step of also connection including foundation, including：
Receive the synchronization request that the user terminal of discharge device duplication sends to content providing
Message；
By the destination address in synchronization request message be changed to be sent behind the address of buffer memory device to
Buffer memory device；
The synchronous response message that order caching equipment sends；
Synchronization message is abandoned；
Receive the connection response that the user terminal of discharge device duplication sends to content providing
Message；
The destination address of connection response message is changed to be sent behind the address of buffer memory device to slow
Deposit equipment.
In one embodiment, carried with user terminal, content using transmission control protocol TCP
For equipment and caching equipment communication.
According to another aspect of the present invention, a kind of session control accelerated for content is disclosed
Device, including：
Receiving unit, the content requests that the user terminal for receiving discharge device duplication sends disappear
Breath；The response message that order caching equipment sends；
Control unit, for content request message to be forwarded into buffer memory device；When judging that response disappears
Cease during for request response, then abandon response message；When judging that response message is content response
During message, then response message is sent to user terminal, and to corresponding with content request message
Content providing sends first and resets message, disappears so that content providing resets according to first
Breath disconnects the connection with user terminal.
In one embodiment, the source address of content request message is the address of user terminal, mesh
Address for content providing address；
Control unit, the ground specifically for the destination address of content requests to be changed to buffer memory device
Sent behind location to buffer memory device.
In one embodiment, the source address of response message is the address of buffer memory device, destination
Location is the address of user terminal；
Control unit, specifically for when response message is judged for content response message, will respond
The source address of message is sent to user terminal after being changed to the address of content providing；To with it is interior
Hold the corresponding content providing of request message and send the first replacement message, first resets message
Source address is the address of user terminal, and destination address is the address of content providing.
In one embodiment, control unit, is additionally operable to judge that response message is without in hit
When holding message, then response message is abandoned, and second is sent to buffer memory device and reset message, with
Just buffer memory device disconnects the connection with user terminal, wherein the second source address for resetting message is use
The address of family terminal, destination address is the address of buffer memory device.
In one embodiment, receiving unit, is additionally operable to receive user's end that discharge device is replicated
Hold the synchronization request message sent to content providing；The synchronization that order caching equipment sends rings
Answer message；The user terminal for receiving discharge device duplication rings to the connection that content providing sends
Answer message；
Control unit, is additionally operable to for the destination address in synchronization request message to be changed to buffer memory device
Address after send to buffer memory device；Synchronization message is abandoned；By the purpose of connection response message
Address is sent to buffer memory device after being changed to the address of buffer memory device.
In one embodiment, using Transmission Control Protocol and user terminal, content providing and
Buffer memory device communicates.
According to another aspect of the invention, a kind of system accelerated for content is disclosed, including：
Discharge device, for replicating the content request message of user terminal transmission and being sent to session
Controller；
Conversation controller, is conversation controller that above-mentioned any embodiment is related to；
Buffer memory device, for when receive conversation controller transmission content request message after to meeting
Words controller sends request response；Corresponding content is inquired about according to content request message, when
When there is content, to conversation controller transmission content response message.
In one embodiment, buffer memory device, is additionally operable to when in the absence of content, to session control
Device processed is sent without hit content-message；Receive the second replacement message that conversation controller sends, root
The connection with user terminal is disconnected according to the second control message.
In one embodiment, discharge device, is additionally operable to duplication user terminal and is set to content offer
The synchronization request message that preparation is sent；User terminal is replicated to be rung to the connection that content providing sends
Answer message；
Buffer memory device, be additionally operable to receive conversation controller transmission synchronization request message after to
Conversation controller sends synchronous response message；The connection response for receiving conversation controller transmission disappears
Breath.
Method, conversation controller and the system accelerated for content of the invention, is set by distribution
It is standby to replicate user terminal to the session content of content providing, realize content acceleration.When
When buffer memory device has the content of request, user's request is preempted response, it is achieved thereby that content
Accelerate, improve Consumer's Experience.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will to embodiment or
The accompanying drawing to be used needed for description is briefly described, it should be apparent that, it is attached in describing below
Figure is only some embodiments of the present invention, for those of ordinary skill in the art, is not being paid
On the premise of going out creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of one embodiment of the method accelerated for content of the invention.
Fig. 2 is the schematic diagram of another embodiment of the method accelerated for content of the invention.
Fig. 3 is the schematic diagram of another embodiment of the method accelerated for content of the invention.
Fig. 4 is that one embodiment that connection is set up in the method accelerated for content of the invention is shown
It is intended to.
Fig. 5 is the schematic diagram of one embodiment of the conversation controller accelerated for content of the invention.
Fig. 6 is the schematic diagram of one embodiment of the system accelerated for content of the invention.
Fig. 7 is the schematic diagram of network architecture one embodiment of the invention.
Fig. 8 is the information exchange figure of one embodiment that foundation is connected in the present invention.
Fig. 9 is the information exchange figure of one embodiment that present invention accelerates.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is only a real part of the invention
Example is applied, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill
The every other embodiment that personnel are obtained under the premise of creative work is not made, belongs to this
Invent the scope of protection.
Fig. 1 is the schematic diagram of method one embodiment accelerated for content of the invention.It is preferred that
, the method for the present embodiment is performed by conversation controller of the invention, as shown in figure 1, this reality
The method and step for applying example is as follows：
Step 101, receives the content request message of the user terminal transmission that discharge device is replicated.
In the present embodiment, discharge device can be light-dividing device, and user terminal is sent into content provides
The content request message of equipment is replicated and is sent to conversation controller.Wherein, content providing can
Being source station, or CDN node.In one embodiment, used between each equipment
Transmission Control Protocol is communicated.
Step 102, buffer memory device is forwarded to by the content request message.
Step 103, receives the response message that the buffer memory device sends.
Step 104, when response message is judged for request response, then abandons response message；
When response message is judged for content response message, then response message is sent to user terminal,
And the first replacement message is sent to content providing corresponding with content request message, so as to interior
Hold offer equipment according to the first connection for resetting message disconnection and user terminal.
As a example by using Transmission Control Protocol.It is first after buffer memory device receives content request message
Request response ACK can be first sent, then according in content request message inquiry accordingly
Hold.When buffer memory device has hit message, can transmission content response message.Conversation controller exists
When receiving response message, lost when response message is judged for request response ACK
Abandon, when content response message is judged as, then transmit the message to user terminal, while to
Content providing sends first and resets message, and such as Reset message, content providing exists
To receive disconnect after Reset message and be connected with the TCP of user terminal.That is, user terminal leads to
Cross the corresponding content that buffer memory device obtains request.Because buffer memory device is arranged on operator's net
Network, it is to avoid user obtains resource content from content providings such as source station, CDN nodes,
It is achieved thereby that content accelerates.
In the embodiment shown in fig. 1, by replicating meeting in carrier network or enterprise network
Words, realize content acceleration.Equivalent on the basis of existing carrier network or enterprise network
On establish bypath system, and with this system copies one user access internet source station or
CDN node identical session, realize access content in the case of buffer memory device, user
Access is preempted response, accelerates content resource speed, reduces the effect of data transfer between netting.
Fig. 2 is the schematic diagram for another embodiment of the method for content acceleration of the invention.It is excellent
Choosing, the method for the present embodiment is performed by conversation controller of the invention, as shown in Fig. 2 with
As a example by being communicated using Transmission Control Protocol, the method and step of the present embodiment is as follows：
Step 201, receives the content request message of the user terminal transmission that discharge device is replicated.
User terminal is set up TCP and is connected with the content providing such as source station, CDN node first, so
User terminal is to content providing transmission content request message afterwards.The source ground of content request message
Location is the address of user terminal, and destination address is the address of content providing.Discharge device will
Content request message is replicated and is sent to conversation controller.Now, content providing still connects
Receive the content request message of user terminal transmission.
Step 202, after the destination address of content request message is changed into the address of buffer memory device
It is sent to buffer memory device.The source address of the content request message that buffer memory device is received is user's end
The IP at end, destination address is the address of buffer memory device.Then buffer memory device sends response message.
Step 203, the response message that order caching equipment sends.
Step 204, when response message is judged for content response message, by the source of response message
Address is sent to user terminal after being changed to the address of content providing.Buffer memory device is being received
Request response ACK is sent after content request message first, conversation controller is received please
Abandoned after seeking response message ACK.
Buffer memory device inquires about corresponding content according to content request message, when there is corresponding content
When, transmission content response message.Wherein, the source address of content response message is buffer memory device
Address, destination address is the address of user terminal.When judging that response message is content response message
When, the source address of response message is changed to be sent behind the address of content providing to user's end
End.User terminal receives content response message, so as to obtain corresponding content.
Step 205, sends first and resets to content providing corresponding with content request message
Message.First replacement message Reset is sent to content providing.Wherein first replacement disappears
The source address of breath is the address of user terminal, and destination address is the address of content providing.It is interior
Hold offer equipment after Reset message is received, disconnection is connected with the TCP of user terminal.
That is, user terminal obtains corresponding contents by buffer memory device.
Under Transmission Control Protocol, after user terminal receives content response message, response is sent
Message ACK, wherein source address are the address of user terminal, and destination address sets for content is provided
Standby address, conversation controller changes destination address after the response message for receiving duplication
It is the address of buffer memory device, and is sent to buffer memory device, so as to completes the transmission of content.
In the embodiment shown in Figure 2, by replicating user terminal with content providing
TCP message, changes corresponding source address or destination address, completes the forwarding of message content
And duplication.So that when buffer memory device has user's request content, being carried out by buffer memory device interior
Hair is held, data area is limited, improve surfing, it is to avoid DNS redirects machine
The problem of redirection is intended in system to the resource in same domain name, content acceleration is realized.With
HTTP redirection mechanism is compared, when discharge device receives content request message by caching
Inquired about in equipment and whether hit, hit just provides content service, reduces and once redirects, improved
The access efficiency of user.Especially frequently small documents are accessed, existing HTTP resets
Larger burden, acceleration of the method for the present invention to large and small file can be brought to mechanism to system
It is applicable.
Fig. 3 is the schematic diagram for another embodiment of the method for content acceleration of the invention.It is excellent
Choosing, the method for the present embodiment is performed by conversation controller of the invention, as shown in figure 3, with
As a example by being communicated using Transmission Control Protocol, the method and step of the present embodiment is as follows：
Step 301, receives the content request message of the user terminal transmission that discharge device is replicated.
Step 302, the destination address of the content request message is changed to the address of buffer memory device
After be sent to buffer memory device.
Step 303, the response message that order caching equipment sends.
Step 304, judges when response message is without hit message, then to abandon response message,
And the second replacement message Reset is sent to buffer memory device, so that buffer memory device disconnects and user's end
The connection at end.Wherein, the second source address for resetting message is the address of user terminal, destination
Location is the address of buffer memory device.
Because buffer memory device is by retrieving, without the content for finding hit, therefore send without hit
Message.Message is reset by second, the connection with buffer memory device is disconnected, user terminal leads to afterwards
Cross content providing and obtain corresponding content.And DNS redirection schemes of the prior art
Then to same domain name under all URL all by system hit or act on behalf of.
Fig. 4 is to set up one embodiment of connection in the method accelerated for content of the invention
Schematic diagram.Preferably, the method for the present embodiment is performed by conversation controller of the invention, such as
Shown in Fig. 4, as a example by using Transmission Control Protocol communication, the method and step of the present embodiment is as follows：
Step 401, what the user terminal that reception discharge device is replicated sent to content providing
Synchronization request message., it is necessary to by three-way handshake in TCP foundation.User terminal is inside
Offer equipment is provided and sends synchronization request message SYN bags, the source address of SYN bags is user terminal
Address, destination address for content providing address.
Step 402, the destination address in synchronization request message is changed to the address of buffer memory device
After send to buffer memory device.That is, the source address in the SYN bags that buffer memory device is received is user
The address of terminal, destination address is the address of buffer memory device.
Step 403, the synchronous response message that order caching equipment sends.Buffer memory device is being received
SYN bags after, specify user terminal and be intended to set up TCP with it and be connected, transmission sync response disappears
Breath SYN ACK bags.Wherein the source address of SYN ACK bags is the address of buffer memory device, mesh
Address for user terminal address.
Step 404, synchronous response message is abandoned.
Step 405, what the user terminal that reception discharge device is replicated sent to content providing
Connection response message.Although user terminal cannot receive the SYN ACK of buffer memory device transmission
Message, but can be the SYN ACK messages for receiving content providing transmission, afterwards, use
Family terminal can send connection response message ACK to content providing.Wherein, connection response
The source address of message ACK is the address of user terminal, and destination address is content providing
Address.
Step 406, after the destination address of connection response message is changed into the address of buffer memory device
Send to buffer memory device.
So far, through step 401~406, user terminal sets with content providing and caching respectively
It is standby to establish TCP connections.Wherein, TCP is set up with the buffer memory device of bypath system to be connected
During, have no effect on user equipment and set up with the TCP of content providing.
Fig. 5 is showing for one embodiment of the conversation controller accelerated for content of the invention
It is intended to, including receiving unit 501 and control unit 502, wherein：
The content that receiving unit 501 is used to receive the user terminal transmission of discharge device duplication please
Seek message；The response message that order caching equipment sends.
Control unit 502 is used to for content request message to be forwarded to buffer memory device；When judgement is responded
When message is request response, then response message is abandoned；When judge response message be content ring
When answering message, then response message is sent to user terminal, and to corresponding with content request message
Content providing send first reset message, so as to content providing according to first reset
Message disconnects the connection with user terminal.Conversation controller of the invention can be assisted using TCP
View and user terminal, content providing and caching equipment communication.
In one embodiment, the source address of content request message is the address of user terminal, mesh
Address for content providing address.Control unit 502 is specifically for content requests are disappeared
The destination address of breath is sent to buffer memory device after being changed to the address of buffer memory device.
In one embodiment, the source address of response message is the address of buffer memory device, destination
Location is the address of user terminal.Control unit 502 is additionally operable to work as and judges that response message is that content is rung
When answering message, by the source address of response message be changed to be sent behind the address of content providing to
User terminal；Send first and reset to content providing corresponding with content request message and disappear
Breath, the first source address for resetting message is the address of user terminal, and destination address is provided for content
The address of equipment.
In one embodiment, control unit 502 is additionally operable to work as and judges that response message is without hit
During content-message, then response message is abandoned, and second is sent to buffer memory device and reset message,
So that buffer memory device disconnects the connection with user terminal, wherein the source address of the second replacement message is
The address of user terminal, destination address is the address of buffer memory device.
In one embodiment, receiving unit 501 is additionally operable to receive the user that discharge device is replicated
The synchronization request message that terminal sends to content providing；The synchronization that order caching equipment sends
Response message；Receive the connection that the user terminal of discharge device duplication sends to content providing
Response message.
Control unit 502 is additionally operable to for the destination address in synchronization request message to be changed to caching
Sent behind the address of equipment to buffer memory device；Synchronization message is abandoned；By connection response message
Destination address is sent to buffer memory device after being changed to the address of buffer memory device.
In the embodiment shown in fig. 5, by replicating meeting in carrier network or enterprise network
Words, realize content acceleration.Equivalent on the basis of existing carrier network or enterprise network
On establish bypath system, and with this system copies one user access internet source station or
CDN node identical session, realize access content in the case of buffer memory device, user
Access is preempted response, accelerates content resource speed, reduces the effect of data transfer between netting.
Fig. 6 is the schematic diagram of one embodiment of the system accelerated for content of the invention.Figure
7 are deployed in LTE (Long Term Evolution, length for present disclosure acceleration system
Phase evolution) network architecture in IP PAN (Personal Area Network, Personal Area Network)
Schematic diagram.As shown in fig. 6, the system 601 accelerated for content of the invention includes：
The content request message that discharge device 6011 is used to replicate the transmission of user terminal 602 is concurrent
Give conversation controller 6012.For example, discharge device 6011 can be light-dividing device.
Conversation controller 6012 is above-mentioned any conversation controller being related to as shown in Figure 5.
Buffer memory device 6013 is used to disappear when the content requests for receiving the transmission of conversation controller 6012
After breath request response is sent to conversation controller 6012；Inquired about according to content request message
Corresponding content, when there is content, to the transmission content response message of conversation controller 6012.
In one embodiment, buffer memory device 6013 is additionally operable to when in the absence of content, Xiang Hui
Words controller 6012 is sent without hit content-message；Receive conversation controller 6012 sends the
Two reset message, and the connection with user terminal is disconnected according to the second control message.
In another embodiment, discharge device 6011 be additionally operable to replicate user terminal 602 to
The synchronization request message that content providing 603 sends；User terminal 602 is replicated to be carried to content
For the connection response message that equipment 603 sends.Buffer memory device 6013 is additionally operable in the meeting of receiving
After the synchronization request message that words controller 6012 sends synchronous sound is sent to conversation controller 6012
Answer message；Receive the connection response message that conversation controller 6012 sends.
In a specific embodiment, for example this hair is disposed in existing LTE IP PAN
Bright system 601, equivalent to a bypath system is established, replicates to TCP message content.
Change to existing network is small, replicates a user and accesses internet source station or CDN node
Identical session, realizes access content in the case of buffer memory device, and user accesses and is preempted
Response, accelerates content resource speed, reduces the effect of data transfer between netting.
Fig. 8 is the information exchange figure of one embodiment that foundation is connected in the present invention.With reference to
Fig. 4 and Fig. 8, so that TCP connections are set up as an example, the reality set up to connection of the invention
Example is applied to illustrate.
Step 801, user terminal sends same to content providings such as source station, CDN nodes
Step request message SYN bags, the source address of SYN bags is the address of user terminal, destination address
It is the address of content providing.When SYN bags are by discharge device, be replicated portion to
Conversation controller.
The destination address of SYN bags is revised as buffer memory device by step 802, conversation controller
Address, is sent to buffer memory device.
Step 803, after buffer memory device receives SYN, specifies user terminal and is intended to be set up with it
TCP is connected, and then replys synchronous response message SYN ACK bags, and wherein source address is slow
The address of equipment is deposited, destination address is the address of user terminal.
Step 804, conversation controller is after the SYN ACK bags for receiving buffer memory device transmission
Abandoned.Therefore, user terminal can't receive the SYN ACK of buffer memory device transmission
Bag.
Step 805, receives the SYN ACK bags that content providing sends.Because content is carried
Have received SYN bags in step 801 for equipment, therefore can also reply a SYN ACK
Wrap to user terminal.Wherein, the source address of the SYN ACK that content providing sends is interior
Hold the address of offer equipment, destination address is the address of user terminal.
Step 806, user terminal sends connection response message ACK bags to content providing.
When ACK bags are by discharge device, a transmission to conversation controller is replicated.ACK
The source address of bag is the address of user terminal, and destination address is the address of content providing.It is interior
Offer equipment is provided and is receiving ACK bags into step 809.
The destination address of ACK bags is changed to buffer memory device by step 807, conversation controller
Buffer memory device is sent to behind address.
Step 808, buffer memory device receive conversation controller transmission ACK bags after, really
Recognize and be connected foundation with the TCP of user terminal.
Step 809, content providing confirms and user terminal after ACK bags are received
TCP connections are set up.
By step as shown in Figure 8.User terminal thinks that it is established with content providing
TCP is connected；Content providing thinks that it establishes TCP and is connected with user terminal；Caching
Equipment thinks that it also establishes TCP with content terminal and is connected.
Fig. 9 is the information exchange figure of one embodiment that present invention accelerates.With reference to 2,
3 and 9, the present invention is illustrated for the system that content accelerates.User terminal with it is interior
After appearance offer equipment and buffer memory device set up TCP connections, initiated to content providing
As a example by HTTP request.
Step 901, user terminal is to content providing transmission content request message HTTP
GET request bag, wherein source address are the address of user terminal, and destination address is provided for content
The address of equipment.HTTP GET requests bag is distributed equipment and answers when by discharge device
Portion processed is sent to conversation controller.
Be changed to for the destination address of HTTP GET request bags by step 902, conversation controller
Buffer memory device is sent to after buffer memory device.
Step 903, buffer memory device first replys one after HTTP GET request bags are received
Response message ACK bags, to show to have received HTTP GET request bags.The ACK bags
Source address for buffer memory device address, destination address for user terminal address.
Step 904, conversation controller is after the ACK bags for receiving buffer memory device transmission by it
Abandon.
Whether buffer memory device is cached with URL according to the content search of HTTP GET request bags
The content for being identified.When without hit resource, into step 905a~905c：
Step 905a, it is conditional code 404 that buffer memory device sends response message to conversation controller
Http response bag.The source address of the response bag is the address of buffer memory device, destination address
It is the address of user terminal.
Step 905b, conversation controller abandons the HTTP of the conditional code 404 that buffer memory device sends
Response bag, and send the second replacement message Reset bags to buffer memory device.
Step 905c, buffer memory device is disconnected with user terminal after Reset bags are received
The TCP connections of foundation.Afterwards, user terminal obtains the interior of correlation by content providing
Hold.
In buffer memory device is identified according to the content search of HTTP GET request bags to URL
Rong Hou, into step 906.
Step 906, it is conditional code 200 that buffer memory device sends response message to conversation controller
Http response bag.The source address of the response bag is the address of buffer memory device, and destination address is use
The address of family terminal.
Step 907a, conversation controller is by the source address of the http response bag of conditional code 200
User terminal is sent to after being changed to the address of content providing.
Step 907b, conversation controller sends first and resets message Reset and carries to content simultaneously
For equipment.
Step 908, content providing disconnects built with user terminal after Reset is received
Vertical TCP connections.
Step 909, user terminal sends ACK bags to content providing.User terminal exists
After the http response bag of the conditional code 200 for receiving conversation controller transmission, due to its source
Address is considered to be obtained from content providing for the address of content providing, therefore user terminal
The resource content for obtaining, ACK bags are sent to content providing.Wherein, the ACK bags
Source address is the address of user terminal, and destination address is the address of content providing.Due to interior
The already off TCP connections of offer equipment are provided, therefore the ACK bags can not be carried by content
Received for equipment.When the ACK bags are by discharge device, it is replicated a to conversation controller.
The destination address of ACK bags is changed to buffer memory device by step 910, conversation controller
Buffer memory device is sent to behind address.
Step 911, buffer memory device receive conversation controller transmission ACK bags after, really
Recognize user terminal and be properly received content.
The system accelerated for content in embodiment as shown in Figure 8 and Figure 9, by setting up
The mode of bypath system is connected in parallel in existing carrier network, than series connection in the operator network
Mode change and influence it is smaller, communicate it is safer.Conversation controller of the invention can
Worked with together with existing light-dividing device, without for realize TCP message replicate and to existing
Buffer memory device carries out secondary development.Meanwhile, compared to existing HTTP redirection mechanism,
Reduce and once redirect, there is provided the access efficiency of user, visited particularly with frequently small documents
Ask, existing HTTP redirection mechanism will carry out larger burden to Netowrk tape, less efficient.
Compared to existing DNS redirection mechanisms, in DNS redirection mechanisms under same domain name
All URL are hit by system or act on behalf of out network, and system of the invention is only to hit
Content catering service, when without hit content can automatically by original source station or
CDN node provides content service.
One of ordinary skill in the art will appreciate that realizing all or part of step of above-described embodiment
Suddenly can be completed by hardware, it is also possible to instruct the hardware of correlation to complete by program, institute
The program stated can be stored in a kind of computer-readable recording medium, and storage mentioned above is situated between
Matter can be read-only storage, disk or CD etc..
Description of the invention is given for the sake of example and description, and is not exhaustively
Or limit the invention to disclosed form.Common skill of many modifications and variations for this area
It is obvious for art personnel.Selection and description embodiment are to more preferably illustrate principle of the invention
And practical application, and make one of ordinary skill in the art it will be appreciated that the present invention is suitable so as to design
In the various embodiments with various modifications of special-purpose.
Claims (15)
1. it is a kind of for content accelerate method, it is characterised in that including：
Receive the content request message of the user terminal transmission that discharge device is replicated；
The content request message is forwarded to buffer memory device；
Receive the response message that the buffer memory device sends；
When the response message is judged for request response, then the response message is abandoned；
When the response message is judged for content response message, then the response message is sent to institute
User terminal is stated, and first is sent to content providing corresponding with the content request message
Reset message, so as to the content providing according to described first reset message disconnect with it is described
The connection of user terminal.
2. method according to claim 1, it is characterised in that
The source address of the content request message is the address of user terminal, and destination address is described
The address of content providing；
The content request message is forwarded into buffer memory device includes：
Sent after the destination address of the content request message is changed into the address of buffer memory device
To the buffer memory device.
3. method according to claim 2, it is characterised in that
The source address of the response message is the address of the buffer memory device, and destination address is described
The address of user terminal；
When the response message is judged for content response message, then the response message is sent
To the user terminal, and sent to content providing corresponding with the content request message
First replacement message includes：
When the response message is judged for content response message, by the source ground of the response message
Location is sent to the user terminal after being changed to the address of the content providing；
First is sent to content providing corresponding with the content request message reset message,
The source address of the first replacement message is the address of the user terminal, and destination address is described
The address of content providing.
4. method according to claim 1, it is characterised in that also include：
When it is without hit content-message to judge the response message, then the response message is lost
Abandon, and to the buffer memory device send second reset message, so as to the buffer memory device disconnect with
The connection of the user terminal, wherein the described second source address for resetting message is user's end
The address at end, destination address is the address of the buffer memory device.
5. method according to claim 1, it is characterised in that receiving discharge device
Before the step of content request message that the user terminal of duplication sends, also including setting up connection
Step, including：
What the user terminal that reception discharge device is replicated sent to the content providing
Synchronization request message；
Destination address in the synchronization request message is changed to the address of the buffer memory device
After send to the buffer memory device；
Receive the synchronous response message that the buffer memory device sends；
The synchronization message is abandoned；
What the user terminal that reception discharge device is replicated sent to the content providing
Connection response message；
After the destination address of the connection response message is changed into the address of the buffer memory device
Send to the buffer memory device.
6. the method according to any one in claim 1-5, it is characterised in that adopt
With transmission control protocol TCP and the user terminal, the content providing and described slow
Deposit equipment communication.
7. it is a kind of for content accelerate conversation controller, it is characterised in that including：
Receiving unit, the content requests that the user terminal for receiving discharge device duplication sends disappear
Breath；The response message that order caching equipment sends；
Control unit, for the content request message to be forwarded into the buffer memory device；When sentencing
When the response message that breaks is request response, then the response message is abandoned；When judging
When stating response message for content response message, then the response message was sent to user's end
End, and disappear to the replacement of content providing corresponding with content request message transmission first
Breath, disconnects and user's end so that the content providing resets message according to described first
The connection at end.
8. conversation controller according to claim 7, it is characterised in that
The source address of the content request message is the address of user terminal, and destination address is described
The address of content providing；
Described control unit, specifically for the destination address of the content request message is changed to
Sent behind the address of buffer memory device to the buffer memory device.
9. conversation controller according to claim 8, it is characterised in that
The source address of the response message is the address of the buffer memory device, and destination address is described
The address of user terminal；
Described control unit, judges that the response message is content response message specifically for working as
When, sent after the source address of the response message is changed into the address of the content providing
To the user terminal；The is sent to content providing corresponding with the content request message
One resets message, and the source address of the first replacement message is the address of the user terminal, mesh
Address be the content providing address.
10. conversation controller according to claim 7, it is characterised in that
Described control unit, is additionally operable to judge that the response message is without hit content-message
When, then the response message is abandoned, and the second replacement message is sent to the buffer memory device,
So that the buffer memory device disconnects the connection with the user terminal, wherein second replacement disappears
The source address of breath is the address of the user terminal, and destination address is the ground of the buffer memory device
Location.
11. conversation controllers according to claim 7, it is characterised in that
The receiving unit, is additionally operable to receive the user terminal of discharge device duplication to described
The synchronization request message that content providing sends；Receive the synchronization sound that the buffer memory device sends
Answer message；The user terminal for receiving discharge device duplication sends to the content providing
Connection response message；
Described control unit, is additionally operable to be changed to the destination address in the synchronization request message
Sent behind the address of the buffer memory device to the buffer memory device；The synchronization message is abandoned；
Sent after the destination address of the connection response message is changed into the address of the buffer memory device
To the buffer memory device.
12. conversation controller according to claim 7-11 any one, its feature exists
In providing and set using transmission control protocol TCP agreement and the user terminal, the content
The communication of the standby and buffer memory device.
A kind of 13. systems accelerated for content, it is characterised in that including：
Discharge device, for replicating the content request message of user terminal transmission and being sent to session
Controller；
Conversation controller, is conversation controller that claim 7-12 any one is related to；
Buffer memory device, for after the content request message that the conversation controller sends is received
Request response is sent to the conversation controller；It is corresponding according to content request message inquiry
Content, when there is the content, to the conversation controller transmission content response message.
14. systems according to claim 13, it is characterised in that the buffer memory device,
It is additionally operable to when in the absence of the content, be sent to the conversation controller and disappeared without hit content
Breath；The second replacement message that the conversation controller sends is received, is disappeared according to the described second control
Breath disconnects the connection with the user terminal.
15. systems according to claim 13, it is characterised in that
The discharge device, is additionally operable to replicate what user terminal sent to the content providing
Synchronization request message；The user terminal is replicated to be rung to the connection that the content providing sends
Answer message；
The buffer memory device, is additionally operable to receiving the synchronization request that the conversation controller sends
After message synchronous response message is sent to the conversation controller；Receive the conversation controller hair
The connection response message sent.
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| CN201510930386.0A CN106888228A (en) | 2015-12-15 | 2015-12-15 | Method, conversation controller and the system accelerated for content |
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| CN201510930386.0A CN106888228A (en) | 2015-12-15 | 2015-12-15 | Method, conversation controller and the system accelerated for content |
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