CN101895469A - Peer-to-peer network flow traction system and method - Google Patents
Peer-to-peer network flow traction system and method Download PDFInfo
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- CN101895469A CN101895469A CN2010102298252A CN201010229825A CN101895469A CN 101895469 A CN101895469 A CN 101895469A CN 2010102298252 A CN2010102298252 A CN 2010102298252A CN 201010229825 A CN201010229825 A CN 201010229825A CN 101895469 A CN101895469 A CN 101895469A
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Abstract
The invention relates to a P2P (peer-to-peer) flow traction system relating to a peer-to-peer network. In the invention, a data packet which is successfully matched is sent to a Tracker server through carrying out Tracker characteristic code matching and P2P characteristic code matching on an acquired data packet; a seed list data packet between Peer and Tracker is analyzed to extract seed information; and the seed information is compared with address information stored in an IP address base, the seed information is deleted from the data packet if the address information is a metropolitan area network external address, otherwise, the seed information is reserved, thus the aim of traction of P2P flow is achieved. The invention can effectively control the flow generated by the traditional P2P type download software including BT, EasyMule and Thunder and can be widely applied to the fields of internet flow traction, internet flow control and the like.
Description
Technical field
The present invention relates to the internet traffic control technology, especially relate to P2P and download software generation flow traction technique.
Background technology
Peer-to-peer network P2P (Peer to Peer) technology, the downloading mode of client terminal/server structure commonly used before it has been overturned, but directly interconnected between the terminal, both sides' shared resource, the collaborative exchanges data of finishing.It is very surprising that P2P connects the total bandwidth that takies, and often can reach the upper limit of network bandwidth limitations.Yet P2P extensive use on the internet but makes operator face awkward condition on network operation.On the one hand, exactly because a large amount of valuable P2P use on the network, just attracted increasing user to use broadband network; The complete interconnected and concurrent connection characteristics that P2P uses can make P2P use and consume a large amount of network bandwidth resources, causes whole Network Transmission instability even network paralysis, has also reduced the returns of investment of operator simultaneously but on the other hand.
Face the growth momentum that P2P can't stop, operator how tackles---be to intercept, still guiding? discharge model from current network, the P2P flow has occupied metropolitan area network outlet bandwidth about 70%, for alleviating the impact of P2P to backbone network, be necessary to dispose the P2P watch-dog at network egress, metropolitan area network outlet P2P flow is drawn, existing P 2P processing method mainly contains two kinds:
● the one, the P2P flow is discerned, bandwidth and number of connection two aspects are limited;
● the 2nd, the metropolitan area network rate of discharge is detected, the P2P flow that hits is redirected to Cache Server handles, provide service by Cache Server to the user;
But existing method institute exposed problems is very obvious:
● bandwidth is limited the decline that the P2P that can cause the user is connected the speed of download of number of users, P2P with number of connection two aspects, influence user's networking speed, and will cause customer complaint;
● because P2P uses and to exist very big uncertainty, so Cache Server might need huge memory capacity, will increase the network operation cost, but also may have copyright problem;
As seen effectively the P2P management means is that it is carried out the flow guiding, and P2P metropolitan area network rate of discharge is introduced this locality, can alleviate the impact of P2P to backbone network on the basis that does not influence user's networking speed.
Summary of the invention
Technical problem to be solved by this invention is, influence user's networking speed at prior art metropolitan area network outlet P2P flow traction method, the memory capacity problems such as adding the network operation cost that heightens, a kind of P2P flow trailer system is proposed, can be effectively to the channeling conduct of P2P flow, control metropolitan area network rate of discharge under the situation that does not influence user's networking speed.
The technical scheme that the present invention solves the problems of the technologies described above is, designs a kind of P2P flow trailer system, and this system comprises: data acquisition module, protocol-analysis model, Tracker analysis module, tabulation modified module, data transmission blocks and IP address base.
Data acquisition module: based on INET socket (the address family socket that ICP/IP protocol is supported) layer building, connect network interface card, responsible collection is caught by network interface card and is operated the packet copy that the system kernel space obtains; The Tracker analysis module: the packet that the data acquisition module is obtained carries out " Tracker " condition code coupling, identification Tracker server, this Tracker server ip address is sent to router, and the packet that the control router will mail to this Tracker server ip preferentially is forwarded to P2P flow trailer system; Protocol-analysis model: be responsible for the packet that data acquisition module obtains is carried out " P2P " condition code coupling, obtain the seed list interactive data information bag between Peer and the Tracker; Tabulation modified module: extract the seed list address information between Peer and the pursuer Tracker, compare with address stored information in the IP address base, if this seed information is then deleted in the outer address of metropolitan area network from packet, otherwise keep this seed information; Data transmission blocks: call NIC driver, finish the transmission of packet.
The present invention also proposes a kind of method of P2P flow traction, and this method may further comprise the steps:
1. obtain the IP bag from kernel INET socket (the address family socket that ICP/IP protocol is supported) layer, carry out load information by data acquisition module and extract, submit to protocol-analysis model and Tracker analysis module;
2.Tracker analysis module carries out " Tracker " condition code coupling to the load data in I (Internet protocol) the P packet, if the match is successful then show that the purpose IP address of this packet is the Tracker server, this purpose IP address information is submitted to router by data transmission blocks, and the packet that router will mail to this IP address preferentially is routed to native system; If coupling gets nowhere then transmits this packet by data transmission blocks;
3. protocol-analysis model carries out " P2P " condition code coupling to the load data in the IP packet, if the match is successful, then this packet is the seed list interactive data information bag between Peer and the Tracker, this packet load information is submitted to the tabulation modified module, if coupling gets nowhere then transmits this packet by data transmission blocks.
4. the tabulation modified module extracts seed list IP address from load information, this pairing region, IP address in the inquiry IP address base, ground domain information and this metropolitan area network region are mated,, otherwise delete this seed information if for IP address in this metropolitan area network then keep this seed;
5. amended seed list information packet is returned to the client of request seed list by data transmission blocks.
Adopt P2P flow trailer system of the present invention and method, directly carry out the data copy at kernel spacing, reduce the system call expense by data acquisition module; By the seed list between modification Peer and the Tracker, remove the outer seed information of metropolitan area network, Peer is drawn on the interior Peer of net with the downloading flow of the outer Peer of net, can effectively reduce the network egress flow; Adopt modular construction, strengthened the extensibility of system.The present invention is applicable to internet traffic traction and control.
Figure of description
Fig. 1 P2P flow trailer system operation principle
Fig. 2 P2P flow trailer system architecture
Fig. 3 P2P flow traction method workflow
Fig. 4 " Tracker " property field coupling form
Embodiment
Below at accompanying drawing and instantiation enforcement of the present invention is described in detail.
Be illustrated in figure 1 as the operation principle schematic diagram of P2P flow trailer system, P2P flow trailer system is at first analyzed the data of being gathered, finding out the BT client mails to Tracker (pursuer) server (Tracker is a necessary part during BT downloads, the resource information of each seed is provided in real time, what a Peer (BT download client) needed not stop in downloading process communicates with the Tracker server, report the information of oneself, and obtain the data message of other download client, note the IP address of Tracker server; System is by BGP (Border Gateway Protocol) Routing Protocol notice metropolitan area network egress router, the packet that mails to the Tracker server ip address is preferentially routed to P2P flow trailer system, packet is carried out protocal analysis, find out the seed list request data package that the BT client is sent to the Tracker server; System analyzes seed list, carries that address stored information compares in the IP address of seed information only and the IP address base, if the outer address of metropolitan area network this seed information of deletion from packet then, otherwise keep this seed information.Then amended seed list packet is returned to the BT client, the resulting seed information of BT client just is limited in this metropolitan area network like this, can effectively reduce the generation of metropolitan area network flow.
Be illustrated in figure 2 as P2P flow trailer system structural representation of the present invention, this system comprises: data acquisition module, pursuer Tracker analysis module, protocol-analysis model, tabulation modified module, data transmission blocks.
1. data acquisition module is based on INET socket (INET socket) layer, and responsible collection is caught by network interface card and is operated the packet copy that the system kernel space obtains, and extracts the packet load data.Packet directly passes to the bag matching module by data acquisition module by the buffering area mapping and carries out data processing.This data acquisition module reduces the system call expense like this without berkeley socket BSD socket layer.
2. Tracker analysis module, the packet that the data acquisition module is collected carries out " Tracker " property field (i.e. " P2P " condition code) coupling, if the match is successful then this packet rs destination IP address is the Tracker server ip address, this IP address is sent to router, and the packet that the control router will mail to this IP address preferentially is routed to P2P flow trailer system Tracker server.
" Tracker " property field is specially: the data packet transmission layer protocol of collection is a Transmission Control Protocol, and the anterior information of data payload is for obtaining the seed request, and this seed request can comprise concrete character and obtain keyword as " get " and seeds such as " accnounce ".The concrete form of IP address information that mails to router comprises destination address and next hop address.
" Tracker " property field coupling form as shown in Figure 4.
The Tracker analysis module is analyzed packet, IP head protocols field in the identification judgment data bag and the anterior character of load data, as IP head protocols field=6, the anterior information of load data is for obtaining the seed request, as comprising " get " and " accnounce " keyword in the concrete character, then the match is successful; If the match is successful, assembling IP address information bag: purpose network in " purpose network, next hop address " is changed to purpose IP address in the IP head, and next hop address is changed to P2P flow trailer system IP address.
3. protocol-analysis model, after the packet that the data acquisition module is obtained carries out " P2P " condition code the match is successful, extract node (resource downloading client) in the packet and the seed list interactive information between the Tracker (pursuer), submit to the tabulation modified module.Condition code information front portion is the P2P condition code, what closely follow is the seed keyword, it is seed list thereafter, be specially: the data packet transmission layer protocol is TCP, the data payload front portion comprises characteristic character " HTTP/1.1200OK Connection:closeContent-Length: " P2P identidication key, thereafter immediately following BT client " peers " keyword.
4. the modified module of tabulating, analyze the seed list address information between Peer and the Tracker, area distribution is carried out relatively in address in the extraction seed in IP address information and the P2P flow trailer system IP address base, judge whether it is the interior seed of metropolitan area network, the outer seed of deletion metropolitan area network keeps seed in the net.
The data record of IP address base is as shown in the table:
| The IP address | Country's numbering | The province numbering | The city numbering |
| 202.202.43.0 | 86 | The Chongqing City | The Chongqing City |
| 188.123.199.0 | 86 | Sichuan Province | Chengdu |
| 58.39.134.0 | 86 | Guangdong Province | The Shenzhen |
The tabulation modified module takes out seed information successively from seed list, the seed information form is a following table:
Compare with information in seed IP address and the IP address base, judge whether it is information in the IP address base,, then keep this seed IP address information, otherwise abandon this information if belong to IP address base information.IP address as first seed is 58.39.134.68, finds that it does not belong to information in the IP address base, then removes this seed information from seed list; As belong to information in the IP address base (in the Chongqing City) and then keep this seed information.
5. data transmission blocks is called the network card equipment driver, and amended seed list packet is recycled to the BT client.
As shown in Figure 3, for adopting P2P flow traction flow process of the present invention, specifically comprise following five steps:
1. data acquisition module obtains the IP bag of data from linux kernel INET socket (the address family socket that ICP/IP protocol is supported) layer, the IP bag is carried out load information extract, its load information is submitted to protocol-analysis model and the further analyzing and processing of Tracker analysis module.
2.Tracker analysis module is analyzed packet, load data in the IP packet is carried out " Tracker " condition code coupling, " Tracker " condition code is specially: the data packet transmission layer protocol of collection is a Transmission Control Protocol, the anterior information of data payload comprises " get " and " accnounce " keyword for obtaining the seed request as concrete character.Satisfy above-mentioned requirements as the load data in the packet, then the match is successful.If the match is successful then show that the purpose IP address of this packet is the Tracker server, this packet rs destination IP address information is submitted to router by data transmission blocks, the IP address information that mails to router comprises: the packet that purpose network, next hop address, router will mail to this IP address preferentially is routed to P2P flow trailer system.Coupling is unsuccessful then transmits this packet by data transmission blocks.
3. protocol-analysis model carries out " P2P " condition code coupling to the load data in the IP packet, judge that whether this IP packet is the seed list interactive data information bag between Peer and the Tracker, in this way, this packet load information is submitted to the tabulation modified module." P2P " condition code is specially: the data packet transmission layer protocol is TCP, and the data payload front portion comprises P2P characteristic character keyword, thereafter immediately following BT client " peers " keyword.As protocol-analysis model detect load data in the IP packet comprise " P2P " condition code and thereafter immediately following " peers " keyword then " P2P " condition code the match is successful.If the match is successful, then this packet is the seed list interactive data information bag between Peer and the Tracker, and this packet load information is submitted to the tabulation modified module; If coupling gets nowhere then transmits this packet by data transmission blocks.
4. the tabulation modified module is handled each seed information in the seed list of packet load, extract a seed information, pairing region, IP address in each seed information of inquiry in the IP address base, seed list is made amendment, promptly keep the destination address in the seed information, delete non-destination address.The data of peers keyword back are seed list, and per 6 bytes are a seed information, and seed information comprises: 4 byte IP addresses, 2 byte port numbers.The IP address base comprises information: IP address, country's numbering, province numbering, city numbering.
For example: from the seed list of packet load, extract a seed information, pairing region, IP address in each seed information of inquiry in the IP address base, if this region is for address inside the province (being that the IP address is identical with the province numbering) then keep seed information in this packet, otherwise from packet the seed information of these 6 bytes of deletion.So circulation disposes all seed informations in the seed list, promptly obtains having revised the packet of seed list.
5. amended seed list packet is returned to the client of request seed list by data transmission blocks.
The present invention is by carrying out " Tracker " condition code coupling and " P2P " condition code coupling to the packet of gathering, the packet that the match is successful is preferentially sent to the Tracker server, and the seed list address information between extraction Peer and the Tracker, compare with address stored information in the IP address base, the outer seed of deletion metropolitan area network, keep seed in the net, reach the purpose of traction P2P flow.Adopt the mode of flow traction, the P2P linking number of limited subscriber does not influence user's P2P speed of download; Do not need huge memory capacity, can not increase the network operation cost; Effectively the P2P flow is drawn to this metropolitan area network, alleviate metropolitan area network outlet bandwidth pressure; This P2P flow trailer system, traction method can be widely used in network security, network traffics are controlled the field relevant with traffic engineering.By packet condition code identification P2P packet, by revising P2P seed download list, reach the purpose of traction P2P flow, can effectively control existing P2P class and download software: BT, electric donkey, flow that a sudden peal of thunder produced, can be widely used in fields such as internet traffic traction, control.
Claims (7)
1. P2P flow trailer system, comprise: data acquisition module, protocol-analysis model, pursuer Tracker analysis module, tabulation modified module, data transmission blocks and IP address base, it is characterized in that: data acquisition module is gathered the packet that is captured by network interface card based on INET socket layer building; The Tracker analysis module carries out Tracker condition code coupling to the packet of data collecting module collected, if the match is successful then this packet rs destination IP address information is submitted to router, the packet that router will mail to this IP address preferentially is routed to peer-to-peer network P2P flow trailer system Tracker server; Protocol-analysis model carries out P2P condition code coupling to the load data in the IP packet, judge that whether this IP packet is the seed list interactive data information bag between download client Peer and the Tracker, in this way, this IP packet load information is submitted to the tabulation modified module; The tabulation modified module extracts the IP address information of seed information successively from seed list, compare with address stored information in the IP address base, if the IP address information outer address that is metropolitan area network from seed list this seed information of deletion, otherwise keep this seed information, the packet of revising seed list is submitted to data transmission blocks; Data transmission blocks is called NIC driver, finishes the transmission of packet.
2. P2P flow trailer system according to claim 1, it is characterized in that, the described packet that will mail to the IP address preferentially is routed to P2P flow trailer system Tracker server and is specially, assembling IP address information bag: purpose network in " purpose network; next hop address " is changed to purpose IP address in the IP head, and next hop address is changed to P2P flow trailer system IP address.
3. P2P flow trailer system according to claim 1, it is characterized in that, described Tracker condition code coupling is specially, data packet transmission layer protocol as collection is TCP, the anterior information of data payload is for obtaining the seed request, its address information form is made up of: " purpose network, next hop address " two parts, and then the match is successful.
4. P2P flow trailer system according to claim 1, it is characterized in that, described " P2P " condition code coupling specifically comprises, the condition code of the packet of Recognition and Acquisition, as the packet transport layer protocol is TCP, the data payload front portion comprises the P2P identidication key, and immediately following the client keyword, then the match is successful thereafter.
5. a P2P flow traction method is characterized in that, may further comprise the steps: the packet that data collecting module collected is caught by network interface card; The packet that the Tracker analysis module obtains the data acquisition module carries out Tracker condition code coupling, and the packet that the match is successful is preferentially sent to the Tracker server; Protocol-analysis model carries out P2P condition code coupling to the packet of data collecting module collected, if the match is successful would extract Peer in the packet and Tracker between mutual seed list submit to the tabulation modified module; The tabulation modified module extracts the IP address information of seed information successively from seed list, compare with address stored information in the IP address base, if the IP address information outer address that is metropolitan area network from packet this seed information of deletion, otherwise keep this seed information, the packet of revising seed list is submitted to data transmission blocks; Data transmission blocks is called NIC driver, finishes the transmission of packet.
6. P2P flow traction method according to claim 5, it is characterized in that, described Tracker condition code coupling is specially, the Tracker analysis module is discerned the packet of gathering, as its transport layer protocol is TCP, and the anterior information of data payload is for obtaining the seed request, its address information form by: " purpose network; next hop address " two parts are formed, and then the match is successful.
7. P2P flow traction method according to claim 5 is characterized in that, described protocol-analysis model specifically comprises P2P condition code coupling, the condition code of the packet of Recognition and Acquisition, condition code information front portion is the P2P condition code, and what closely follow is the seed keyword, is thereafter seed list.
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| CN102664813A (en) * | 2012-05-17 | 2012-09-12 | 重庆邮电大学 | System and method for localizing peer-to-peer (P2P) flow |
| CN103001880A (en) * | 2012-11-30 | 2013-03-27 | 北京百度网讯科技有限公司 | Flow lead method and device based on nonstandard open shortest path first (OSPF) routing protocol |
| CN104767762A (en) * | 2015-04-28 | 2015-07-08 | 亚信科技（南京）有限公司 | Safety protection system |
| CN109716731A (en) * | 2016-05-31 | 2019-05-03 | 埃克申铁克电子公司 | For providing the system and method for functions reliably and efficiently data transmission |
| CN113709045A (en) * | 2021-07-19 | 2021-11-26 | 国网河南省电力公司信息通信公司 | Peer-to-peer network traffic traction system and traffic traction method |
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| CN102664813A (en) * | 2012-05-17 | 2012-09-12 | 重庆邮电大学 | System and method for localizing peer-to-peer (P2P) flow |
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| CN103001880A (en) * | 2012-11-30 | 2013-03-27 | 北京百度网讯科技有限公司 | Flow lead method and device based on nonstandard open shortest path first (OSPF) routing protocol |
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Application publication date: 20101124 |