CN106572013A - Single-connection multi-router backup TCP (transmission control protocol) network system - Google Patents
Single-connection multi-router backup TCP (transmission control protocol) network system Download PDFInfo
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- CN106572013A CN106572013A CN201610985388.4A CN201610985388A CN106572013A CN 106572013 A CN106572013 A CN 106572013A CN 201610985388 A CN201610985388 A CN 201610985388A CN 106572013 A CN106572013 A CN 106572013A
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- cloud server
- tcp
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/22—Alternate routing
-
- 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
- H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention relates to a single-connection multi-router backup TCP (transmission control protocol) network system. According to the system, at least two TCP-based data channels are established between a user PC terminal and a Web server; a message sent from the user PC terminal to the Web server is duplicated, so that two identical copies can be obtained, the two identical copies are sent to the Web server through two data channels respectively, wherein one copy arrives at the Web server at first, and the other copy is discarded in a transmission process; and a reverse process is the same as the above process. According to the system of the invention, a complicated RTT (round trip time) algorithm is not needed, a protocol stack is not needed to be modified, and redundant software is not needed to be installed; the TCP channels are established, so that packet loss, retransmission and disorder can be avoided basically; and the effectiveness of the TCP can be maximized.
Description
Technical field
The invention belongs to Internet technology, and in particular to a kind of TCP network systems of single connection multirouting backup.
Background technology
It is well known that TCP/IP is the computer network with standard network protocol external member on Internet.And on the level of the transport layer, TCP is then occupied
Leading status, considerably beyond the UDP for being both transport layer.This is because TCP provides a kind of reliable connection, user is concerned about
Whether the data of oneself can be sent to safely opposite end without losing, can all select to transmit using TCP as the bottom of application software
Agreement.
But, this reliability is accompanied by corresponding shortcoming.That is, TCP is ensured this using many technologies
Reliability, such as dynamic calculation RTT (two-way time of round trip time messages), adjust the speed for sending message with suitable
Answer network speed；In the situation that message dropping occurs, then initiate to retransmit；Slow turn-on, fast fallback with deal with networking burst congestion, no
Put into more messages to cause further congestion, etc. to the network of original congestion.Thus, TCP be it is a kind of very " gentleman "
Agreement, generally, have great ability to pull great work, three given precedence to when clashing and is given others and is had road walk.
But some starting points are designed well, many difficulties are encountered in practice.The calculating of such as RTT can not actually reflect network
Performance, in transmitting procedure, basic 99.9% message all reaches opposite end quickly, there occurs the time delay of 0.1% message once in a while
(possibly network transients is unstable, or the bug of certain intermediate equipment causes to lose), also results in TCP and increases RTT,
Reduce transmission speed.Occurring in the case that certain message dropping can not reach that end, the TCP of sender will be anticipated immediately
Know, and be to wait for 1 second being retransmitted without responding again, again without response, then waiting 2 seconds again retransmits, always by 1,2,4,8 seconds ... this
The index of sample is retried just to be abandoned several times.Although TCP employs the technology of sliding window, retransmit certain message when other
Message still may proceed to send, but in the case that receiving terminal TCP needs to be connected to all of continuous message, can just give application
Layer is processed.And, in the case that sender recognizes that generation is retransmitted, can also reduce speed, cause throughput degradation.
In sum, in actual applications, RTT should be reduced as far as possible and avoid TCP that packet loss occurs retransmitting, to improve TCP
Efficiency.At present, most research work concentrates on the RTT computational methods of more accurate (certainly more complicated), including uses
The method of machine learning is counting RTT；Or by adjusting some parameters of ICP/IP protocol stack, so that transmission more swashs
Enter, to reach transmission faster, but this way often violates the more modest and amiableer styles of TCP, is to violate Transmission Control Protocol.
The content of the invention
Present invention aims to the defect of prior art, there is provided a kind of TCP networks of single connection multirouting backup
System, on the basis of in accordance with Transmission Control Protocol, it is to avoid using complicated mathematical operation, improve the performance of network data transmission.
Technical scheme is as follows：A kind of TCP network systems of single connection multirouting backup, including user's PC terminals
And Web server, described user's PC terminals are connected with router R1, and Web server is connected with router R2, wherein, in institute
Data tunnel is provided between the router R1 for stating and Cloud Server A and route is configured；Described Cloud Server A at least respectively with cloud
Data tunnel is provided between server B, Cloud Server C and route is configured；Described Cloud Server B, Cloud Server C respectively with cloud
Data tunnel is provided between server D and route is configured；So as to form at least two bases from user PC terminals to Web server
In the data channel of TCP transmission agreement；
User's PC terminals are sent to the message of Web server and are replicated after the Cloud Server A is reached, and two parts identical
Copy Jing Cloud Servers B, Cloud Server C are sent to Cloud Server D respectively, the copy for first receiving is sent to Web clothes by Cloud Server D
Business device, and the identical copies discarding received by after；
Web server is replicated after the Cloud Server D is reached response to the message of user's PC terminals, two parts of complete phases
Jing Cloud Servers B, Cloud Server C are sent to Cloud Server A to same copy respectively, and the copy for first receiving is sent to use by Cloud Server A
Family PC terminals, and the identical copies discarding received by after.
Further, the TCP network systems of single connection multirouting backup as above, wherein, in the Cloud Server D
Sliding window is provided with, the copy for first receiving in sliding window is sent to Web server, is sent completely by Cloud Server D
Sliding window is moved into next bit immediately afterwards, after the identical copies that receive due to not being dropped in window.
Further, the TCP network systems of single connection multirouting backup as above, wherein, in the Cloud Server A
Sliding window is provided with, the copy for first receiving in sliding window is sent to user's PC terminals, is sent completely by Cloud Server A
Sliding window is moved into next bit immediately afterwards, after the identical copies that receive due to not being dropped in window.
Further, the TCP network systems of single connection multirouting backup as above, wherein, described Cloud Server A positions
In the region near router R1, described Cloud Server D is positioned at the region near router R2；Described cloud clothes
Business device B and Cloud Server C be located at separate distant two it is local.
Further, the TCP network systems of single connection multirouting backup as above, wherein, can be arranged by increasing
Other Cloud Servers between Cloud Server A and Cloud Server D, extend from user PC terminals to Web server based on
The data channel quantity of TCP transmission agreement.
Further, the TCP network systems of single connection multirouting as above backup, wherein, each router and cloud service
Between device, and the data tunnel arranged between each Cloud Server is the vpn tunneling based on application layer.
Further, the TCP network systems of single connection multirouting backup as above, wherein, described copy includes TCP
Serial number, port, IP etc..
Beneficial effects of the present invention are as follows：The report of the TCP network systems of single connection multirouting backup provided by the present invention
Text is processed to be occurred in User space, it is not necessary to complicated RTT algorithms, need not change protocol stack, unnecessary soft without installing
Part；By the foundation of multiple TCP transmission channels, packet loss re-transmission will not occur substantially out of order so that the efficiency of TCP is realized maximum
Change；The present invention can be obviously improved user network data transmission performance, even if a cloud line failure, whole data cube computation
Will not also disconnect, still being capable of normal transmission.
Description of the drawings
Fig. 1 is the TCP network system topology figures of the single connection multirouting backup of the present invention；
Fig. 2 is the principle schematic by sliding window technique discarding copy.
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.
As shown in figure 1, the TCP network system topologies of the single connection multirouting backup of the present invention, its structure includes user PC
Terminal and Web server, described user's PC terminals are connected with router R1, and Web server is connected with router R2.In user
At least two data passages are set up by several Cloud Servers between PC terminals and Web server, in described router R1
Data tunnel is provided between Cloud Server A and route is configured, so as to ensure that the data traffic that user's PC terminals send can be entered
Enter Cloud Server A；Described Cloud Server A is at least provided with data tunnel respectively between Cloud Server B, Cloud Server C and is matched somebody with somebody
Put route；Described Cloud Server B, Cloud Server C is provided with data tunnel respectively between Cloud Server D and configures route；Number
Cloud Server D can be reached respectively through Cloud Server B, Cloud Server C by Cloud Server A according to flow, and be sent out by Cloud Server D
Toward destination Web server, so as to form at least two numbers based on TCP transmission agreement from user PC terminals to Web server
According to passage.It is obvious to those skilled in the art that Cloud Server A and cloud clothes can be arranged on by increasing
Other Cloud Servers between business device D, extend the data based on TCP transmission agreement from user PC terminals to Web server
Number of channels.
The following is using two data passages as embodiment to further illustrating that the present invention is carried out.
User's PC terminals are wanted to access the other end of Web server of Internet, and the TCP that PC terminals are initiated connects such as
Its gateway egress router R1 is gone to equally habitually in the past.The configuration that R1 routers need some extra, by this TCP connection be not
Be placed directly on Internet to go, but be rerouted to Cloud Server A, it is common practice that one is set up in advance from router R1 should
With the vpn tunneling (such as SSL VPN) of layer to Cloud Server A, then a route is configured in R1 and the connection of target TCP is imported into this
Tunnel.
In the specific embodiment shown in Fig. 1, there is a hello information and go out in PC terminals.Cloud Server A is being received
After the message that PC terminals are sent, it is replicated into a (now with two parts of identical messages, referred to as copy).By copy
1 is sent to Cloud Server B, and copy 2 is sent to Cloud Server C.Certainly, this data transmission procedure is also by Cloud Server A
The tunnel (vpn tunneling of application layer) and route implementing of foundation in advance and Cloud Server B, Cloud Server C between.
By way of Cloud Server B, Cloud Server C can also be vpn tunneling and route application layer, hello is believed
Breath is sent to Cloud Server D.At this time Cloud Server D have received (may not be while receiving) two parts of striking resemblances (includes institute
Some TCP sequence numbers, port, IP etc.) TCP message, the user profile of carrying is hello.Obviously, it is impossible to allow two parts of phases
Same message is all sent to Web server, and the otherwise tcp protocol stack of Web server can receive a message, be then followed by one
Individual copy comes, it is believed that the latter is once to retransmit.As it was noted above, retransmitting many troubles, Web can be caused to tcp protocol stack
Server will be considered that user and the network between it are problematic, and it can also carry out some reduction of speed process.So, Cloud Server D is needed
The TCP message for first reaching is let slip, then identical packet loss later.This point is for those skilled in the art
For can be realized using existing technology, for example, it is possible to use TCP sliding window techniques design a similar sliding window,
Message inside this window can be sent to Web server, and window is moved to next bit immediately after being sent completely, institute
With the copy of repetition not inside window, it will be dropped when arrival, as shown in Figure 2.In Fig. 2 100,101,
102 ... is the message sequence stated with a kind of intuitively method, and 100 and 100 (2) is exactly two identical message copies, when
After message copy 100 is initially positioned in sliding window and is sent to Web server, window moves next bit, message copy
100 (2) are dropped.In specific TCP is realized, message can be marked using serial number, Fig. 2 is only a kind of principle
Explanation, what this will be appreciated that for a person skilled in the art.
From in terms of another direction, basic procedure with it is above-mentioned be.The back message of Web server can be briefly returned to
(because D has been NAT (network address translation) to connection, Web server has seen that request is taken from cloud to Cloud Server D
Business device D's), then message is also copied into identical two parts of copies by Cloud Server D, respectively Jing Cloud Servers B and cloud clothes
The message copy for receiving is sent to Cloud Server A by business device C, Cloud Server B and Cloud Server C, and Cloud Server A is similar TCP
The copy that sliding window is arrived after abandoning, only lets slip the copy of first arrival to user's PC terminals.
The all of Message processing that the present invention needs is occurred in User space (because the present invention is set up in Cloud Server
Tunnel is all based on application layer), and unlike other optimized algorithms are the kernel states in computer system.One is processed in kernel state
Have accidentally, the collapse of whole system will be caused.And the mistake of User space can only affect its own, and this mistake to can be
Recover.
And, the present invention is realizing by the design of the network architecture, it is not necessary to complicated RTT algorithms, without the need for modification
Protocol stack, is exactly transparent to user and server two ends, without the unnecessary software of installation at all.
Generally Cloud Server A can be placed in relative to router R1 close region (router R2 and Web service in the same manner
Device), preferably same area, or city, or same province, so get congestion from user PC terminals to router R1,
The probability of packet loss can be very little.And be most likely to occur that network problem is from Cloud Server A to the very long of Cloud Server D
Internet.The solution of the present invention is that all of message is all divided into two copies now, walks A-B-D, A-C-D two lines road.
If Cloud Server B and Cloud Server C be separate distant two it is local, this two parts of copies are bound to away different roads
By or different operators, the probability that they go wrong simultaneously is very little, so at least one copy reaches Cloud Server D
Probability substantially increase.From the point of view of user PC terminals or Web server, substantially just there is no packet loss and retransmit disorderly
Sequence, the efficiency of TCP can be maximized.
The present invention is it is also an option that route.Common IP messages forwarding is to select next jumping out by the router on backbone network
Mouth forwarding, can typically choose than preferably one outlet.But sometimes, in the presence of the synchronization between router
Difference, or may routing function itself defect, do not have to find more excellent path for message and arrive at.On backbone network
Router is not that we can control what is changed, but if we are found that this more excellent path by some mechanism, can
By flow is oriented to the Cloud Server on this more shortest path, to play the result of optimization network.
For the network transfer speeds of technical solution of the present invention, at least equal to (being probably greater than) A-B-D, A-C-D
Most fast one in two circuits, and when this occurs packet loss once in a while, the copy of can reach Cloud Server D in addition
Fill up this message being dropped.
For the transmission in high in the clouds, twice original tape width, because have now becoming A-B-D, A-C-D two lines road are needed.But
It is the outlet to user PC terminals and Web server, they need not increase bandwidth to obtain the lifting of this performance.
The reliability of technical solution of the present invention, extensibility, manageability and safety are all very strong.As previously described,
Extra circuit such as A-Z-D can be increased if desired.And because being based entirely on cloud carrys out arrangement, change is deleted in this addition
Circuit is easily done.Reliability is primarily referred to as, such as just in case somewhere there occurs fibercuts in A-B-D circuits
(being dragged disconnected by fishing boat referring to certain year Sino-U.S.'s submarine optical fiber cable), as long as A-C-D circuits (being such as to walk Eurasia optical fiber) out of question, uses
Family is not felt by failure completely.As for safety, such as this programme is to set up tunnel with the mode of SSL VPN, then the connection
Major part is all through encryption tunnel.For some do not have the application of encryption function in itself, this way provides extra
Safe encryption function.
The present invention is also easy to add extra service, provides the traffic security scanning of user, subtract such as on Cloud Server
The gateway pressure of light subscriber's outlet, gateway need not be arranged fire wall, fire wall can be arranged into high in the clouds.
According to prototype test, technical scheme provided by the present invention realizes carrying for user network data transmission performance really
Rise.Test shows, can reach the twice of original speed in some cases.By cloud circuit intentional initiating failure, whole number
Will not disconnect according to connection, still can normal transmission.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications and modification to the present invention belong to the model of the claims in the present invention and its equivalent technology
Within enclosing, then the present invention is also intended to comprising these changes and modification.
Claims (7)
1. the TCP network systems that a kind of single connection multirouting is backed up, including user PC terminals and Web server, described user
PC terminals are connected with router R1, and Web server is connected with router R2, it is characterised in that：In described router R1 and cloud
Data tunnel is provided between server A and route is configured；Described Cloud Server A at least respectively with Cloud Server B, Cloud Server
Data tunnel is provided between C and route is configured；Described Cloud Server B, Cloud Server C is provided between Cloud Server D respectively
Data tunnel simultaneously configures route；So as to formed at least two from user PC terminals to Web server based on TCP transmission agreement
Data channel；
User's PC terminals are sent to the message of Web server and are replicated after the Cloud Server A is reached, two parts of identical pairs
This respectively Jing Cloud Servers B, Cloud Server C be sent to Cloud Server D, the copy for first receiving is sent to Web service by Cloud Server D
Device, and the identical copies discarding received by after；
Web server is replicated after the Cloud Server D is reached response to the message of user's PC terminals, and two parts identical
Jing Cloud Servers B, Cloud Server C are sent to Cloud Server A to copy respectively, and the copy for first receiving is sent to user PC by Cloud Server A
Terminal, and the identical copies discarding received by after.
2. the TCP network systems that single connection multirouting as claimed in claim 1 is backed up, it is characterised in that：In the cloud service
Sliding window is provided with device D, the copy for first receiving in sliding window is sent to Web server by Cloud Server D, is sent
After the completion of sliding window is moved into next bit immediately, after the identical copies that receive due to not being dropped in window.
3. the TCP network systems that single connection multirouting as claimed in claim 1 is backed up, it is characterised in that：In the cloud service
Sliding window is provided with device A, the copy for first receiving in sliding window is sent to user's PC terminals by Cloud Server A, is sent out
Sliding window is moved into next bit immediately after the completion of sending, after the identical copies that receive due to not being dropped in window.
4. the TCP network systems that the single connection multirouting as described in any one in claim 1-3 is backed up, it is characterised in that：
, positioned at the region near router R1, described Cloud Server D is positioned near router R2 for described Cloud Server A
Region；Described Cloud Server B and Cloud Server C be located at separate distant two it is local.
5. the TCP network systems that single connection multirouting as claimed in claim 1 is backed up, it is characterised in that：Can be by increasing
Other Cloud Servers being arranged between Cloud Server A and Cloud Server D, extend from user's PC terminals to Web server
Data channel quantity based on TCP transmission agreement.
6. the TCP network systems that the single connection multirouting as described in claim 1 or 5 is backed up, it is characterised in that：Each router with
Between Cloud Server, and the data tunnel arranged between each Cloud Server is the vpn tunneling based on application layer.
7. the TCP network systems that single connection multirouting as claimed in claim 1 is backed up, it is characterised in that：Described copy bag
Include TCP sequence number, port, IP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610985388.4A CN106572013A (en) | 2016-11-09 | 2016-11-09 | Single-connection multi-router backup TCP (transmission control protocol) network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610985388.4A CN106572013A (en) | 2016-11-09 | 2016-11-09 | Single-connection multi-router backup TCP (transmission control protocol) network system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106572013A true CN106572013A (en) | 2017-04-19 |
Family
ID=58540715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610985388.4A Withdrawn CN106572013A (en) | 2016-11-09 | 2016-11-09 | Single-connection multi-router backup TCP (transmission control protocol) network system |
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| CN109413101A (en) * | 2018-12-08 | 2019-03-01 | 宁波博太科智能科技有限公司 | A kind of information transferring method between client and server-side |
| CN110944358A (en) * | 2018-09-25 | 2020-03-31 | 华为技术有限公司 | Data transmission method and device |
| CN111372328A (en) * | 2020-03-12 | 2020-07-03 | 深圳市三旺通信股份有限公司 | Data communication method, device, equipment and computer readable storage medium |
| CN116016547A (en) * | 2022-11-30 | 2023-04-25 | 云南电网有限责任公司 | Flow slicing processing method based on power grid acquisition terminal |
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| CN116016547A (en) * | 2022-11-30 | 2023-04-25 | 云南电网有限责任公司 | Flow slicing processing method based on power grid acquisition terminal |
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