CN101577671A - Method and system for automatically controlling flow of peer-to-peer networking service - Google Patents
Method and system for automatically controlling flow of peer-to-peer networking service Download PDFInfo
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Abstract
The invention discloses a method and a system for automatically controlling flow of peer-to-peer networking P2P service. The method comprises the following steps that: network equipment makes statistics of flow of a current network, and determines and executes a current flow control mode according to a currently occupied network flow and a flow control strategy; if the current flow is smaller than a set first threshold, the designated P2P application connection is allowed to be increased; and if the current flow is greater than a set second threshold, the designated P2P application connection is disconnected, and the first threshold is less than or equal to the second threshold. The method and the system have the advantages of overcoming the defects existing in the conventional network flow management that the management of the P2P application flow lacks of flexibility, single disconnection is performed or a single strategy is implemented, ensuring the normal operation of the network service not to be affected during a busy period of the network service, and reasonably allocating resources for the P2P so as to avoid the waste of the network resources when the network flow is small and the idle bandwidth for utilization exists.
Description
Technical field
The present invention relates to the method and system of carrying out the automatic control of flow in a kind of P2P of being used for (peer-to-peer, equity networking) application process, can be applicable in network management product and the audit product.
Background technology
Network management system is to use the increasingly extensive important means as network safety prevention at present, and it is by the network service efficiency that is configured to reach optimum to network internal overall architecture and application.It is adjusted by monitoring and strategy for the current network running status, is that Network is able to normal smoothly operation, avoids the abuse and the waste of Internet resources, ensures the normal operation of network system, is the effective ways that enterprise realizes IT management and control.Use along with having occurred increasing P2P class in the middle of the present network environment of networks development.P2P network configuration and application and development are good thought and incomparable advantage are arranged that it can improve utilization rate of network resource from the shared angle of Internet resources, improve the resource-sharing rate, are main trend of future network development.But owing to lack unified standard and operating specification, the appearance that P2P uses also brings a lot of drawbacks.This is mainly reflected on the abuse for Internet resources, and is excessive such as the download occupied bandwidth of P2P, has a strong impact on use of other proper network business or the like.
The drawback of bringing along with the P2P application is serious day by day, and a lot of different measures of network security product consideration wish that application is limited for P2P.But present network management product is for the concrete control of P2P class application or the consideration and the imperfection of restricted version.A lot of safety products such as fire compartment wall, products such as IPS, UTM are attempted to provide for P2P and are used the problem that current P2P abuses Internet resources that solves of block.The mode that most products has adopted protocol analysis to add characteristic matching detects the concrete application of P2P in network environment, as BT, emule or the like, the message that has a protocol characteristic for discovery takes variety of way to block subsequently.But adopt the mode of blocking-up also to face a lot of problems.At first P2P is as a kind of new network application, and its principle and structure are very advanced and reasonably, be the development trend of future network, singlely blocks and is unfavorable for networks development.In addition, owing to the enforcement of blocking-up, increasing P2P uses and has adopted encryption etc. to hide mode, and the result has caused blocking-up more and more difficult, or even detects the very difficulty that identification all becomes, and this is unfavorable for that on the contrary application is reasonably managed and guided to P2P.Therefore say that blocking-up is not the best bet of dealing with problems.
Secondly, some network management system or administrative staff have adopted use that the way limiting P 2 P of limited flow or linking number uses to avoid the interference to normal Network.But most ways to restrain are single, for example limit linking number threshold value or flow threshold or the like.This also can cause some problems, network busy with adopt when network is not busy identical ways to restrain will certainly cause waste of network resources.In general network environment, the Network of working period is busy, need reduce using even stopping using of P2P this moment so that for regular traffic keeps enough bandwidth as far as possible, and to improving the scope of application of P2P application to accomplish the maximum utilization of Internet resources time the bandwidth free time at night.Therefore be necessary to develop and a kind ofly can realize that autocontrol method is carried out in the P2P application traffic to be distributed for reasonable resources in order to improve network system, both the use of regular traffic also can guarantee the maximum utilization of Internet resources.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of P2P automatic flow control method and system, realized adjusting for P2P application limitations or management Strategy automatically in real time in the real network environment, had simultaneously that flexibility is strong, speed fast and high accuracy for examination according to the traffic statistics situation.
In order to address the above problem, the invention provides the professional automatic flow control method of a kind of equity networking P2P, may further comprise the steps: the network equipment is added up the current network flow situation, determine current flow control mode and execution according to current network traffics that take and flow control strategy: if present flow rate less than first thresholding of setting, then allows the P2P that increases appointment to use connection; If present flow rate, is then blocked the P2P of appointment greater than second thresholding of setting and used connection, described first thresholding is smaller or equal to described second thresholding.
Further, in present flow rate during less than first thresholding set, the described network equipment is also according to the difference of first thresholding of present flow rate and setting, sets the maximum stream flow that maximum quantity that the P2P that allows to increase uses and/or each P2P use and limits;
In present flow rate during greater than second thresholding set, the described network equipment is also according to the difference of second thresholding of present flow rate and setting, definite corresponding P2P that will block uses and carries out, and the corresponding P2P that has connected that will preserve after finishing uses the link information deletion or is not changed to and connects, and finishes.
Further, the network equipment is according to the time interval of setting the traffic conditions in the current network environment to be carried out periodic statistics.
Further, the P2P that the described network equipment has been caught appointment uses behind the message as judges that it is that the P2P that increases newly uses, then judge that according to current flow control mode and implementation status can increase the P2P application be connected, if can, then directly connect and write down this P2P that has connected and use link information, upgrade the P2P number of applications that this measurement period has connected simultaneously.
Further, the described network equipment judges that according to current flow control mode and implementation status can increase P2P uses when being connected, as judge that current flow control mode connects for the P2P application that allows to increase appointment, and the P2P that has connected after the last time statistics uses the maximum quantity of the increasable P2P application of determining less than this time statistics, then can increase P2P and use connection, otherwise can not increase.
Further, the described network equipment judges that according to current flow control mode and implementation status can not increase P2P uses when being connected, then abandons the described P2P application link information that increases newly.
In order to address the above problem, the present invention also provides a kind of equity networking P2P automatic flow control system, comprises the network traffics controller, and the storage device and the tactful device for carrying out said that are connected with this network traffics controller, wherein:
Described network traffics controller, be used for current network flow condition is added up, determine specifying the present flow rate control mode that P2P uses and being kept in the storage device in conjunction with the flow control strategy that from storage device, extracts, less than first thresholding of setting, then allow the P2P that increases appointment to use connection as present flow rate; Greater than second thresholding of setting, the P2P that then should block appointment uses and connects as present flow rate, connects allowing to increase and should block the flow control mode that is connected and send to described tactful device for carrying out said, and described first thresholding is smaller or equal to described second thresholding;
Described tactful device for carrying out said, be used to receive the present flow rate control mode that described network flow statistic device sends, the connection of specifying P2P to use is perhaps blocked the appointment P2P that has connected and is used the corresponding P2P application link information deletion that connects and will preserve or be not changed to connection;
Described storage device is used to preserve the P2P that has connected and uses flow control policy information, present flow rate control mode and the implementation status information of link information, configuration.
Further, described network traffics controller is in present flow rate during less than first thresholding set, also according to the difference of first thresholding of present flow rate and setting, set the maximum stream flow restriction that maximum quantity that the P2P that allows to increase uses and/or each P2P use and also send to described tactful device for carrying out said; And, in present flow rate during,, determine the corresponding P2P application that will block, and send to described tactful device for carrying out said also according to the difference of second thresholding of present flow rate and setting greater than second thresholding set.
Further, described system comprises that also P2P uses identifier and P2P application processor, wherein:
Described P2P uses identifier, is used for determining according to the data message of actual acquisition whether current mutual data are the P2P application of appointment, and the P2P application link information that extracts in the P2P application data message is sent to the P2P application processor;
Described P2P application processor, be used to receive P2P and use the P2P application link information that identifier is sent, as judge that it is that newly-increased P2P uses connection, present flow rate control mode and the implementation status thereof then from storage device, extracted, as judge that current flow control mode connects for the P2P application that allows to increase appointment, and the P2P that has connected after the last time statistics uses the maximum quantity of the increasable P2P application of determining less than this time statistics, judge that then can increase P2P uses and connect, will increase P2P newly and use link information and send to tactful device for carrying out said and connect;
Described tactful device for carrying out said is to use link information according to the newly-increased P2P that receives to specify the connection of P2P application and write down this P2P that has connected application link information, the P2P number of applications that this measurement period of while updated stored has connected.
Further, described network traffics controller is according to the time interval of setting the traffic conditions in the current network environment to be carried out periodic statistics;
Described P2P application processor judges that according to current flow control mode and implementation status can not increase P2P uses when being connected, then abandons the described P2P application link information that increases newly.
Compared with prior art, the invention solves in the legacy network traffic management, simple block or implement the various deficiencies that pure strategy is brought for the flexibility of P2P class application traffic lack of control.From the traffic conditions of whole current network environment, P2P is used the strategy adjustment that rationalizes, dynamically according to the operating position of actual conditions limiting P 2 P application to bandwidth.Both can guarantee not influence the carrying out of proper network business in the busy period of Network, also can be less in network traffics, the use that reasonable distribution P2P under the available situation of idle bandwidth is arranged is to avoid waste of network resources.Help network management system or network management personnel to be provided with flexibly for the rationalization of P2P and manage, have good enforcement flexibility and applicability according to the real network situation, but in the extensive use networking products.
Description of drawings
Fig. 1 is the flow chart that the embodiment of the invention network equipment is used identification and handled P2P after capturing data message;
Fig. 2 is the flow chart of the P2P automatic flow control of the embodiment of the invention network equipment;
Fig. 3 is the P2P automatic flow control system Organization Chart of the embodiment of the invention.
Embodiment
The present invention is in order to solve the drawback that conventional solution exists, further set forth a kind of P2P automatic flow control method of the present invention and system by following specific embodiment, below embodiment is described in detail, but not as a limitation of the invention.
Hereinafter, flow control and P2P traffic identification and separate two flow processs of carrying out that are treated to by the different event triggering.The flow control flow process is called the result in P2P traffic identification and the handling process when needed.
Present embodiment is a sample with the network message of actual acquisition, according to the protocol format that uses in the various P2P application processes data message is resolved and relied on to have message characteristic in the middle of the data message that transmits in the middle of this P2P application communication process or the identification that P2P uses is carried out in behavior.
As shown in Figure 1, the embodiment of the invention network equipment is after capturing data message, and the flow chart to P2P uses identification and handles comprises following steps:
Step 100 is used the feature that has according to the current mutual data message of actual acquisition and all kinds of P2P, adopts the data pack protocol analytical technology that described data message is carried out stratification and resolves;
Step 102 is extracted P2P and is used link information from the P2P application data message that receives, judge whether that the P2P that increases newly uses, if not, then handle by existing method, finish; If, execution in step 103;
Particularly, use all P2P application link informations that link information is inquired about current storage according to the available P2P that extracts, if Query Result shows that this P2P uses link information and has been included in the storehouse then do not do change, the next P2P that continuing inquiry is simultaneously provided by the network traffics controller uses link information (if existing next P2P to use link information).If Query Result shows that this P2P uses link information and do not preserve, show that then it is that the P2P that increases newly uses link information.
Step 103 according to current flow control mode and implementation status, judges whether to increase P2P and uses connection:
If can increase (allow increase as current flow control mode, and the P2P that has connected using the maximum quantity of the increasable P2P application of determining less than this time statistics after the last time statistics), then execution in step 104;
If cannot increase (do not allow to increase as current flow control mode, perhaps the P2P that has connected uses and reached the maximum quantity that the definite increasable P2P of this time statistics uses) after the last time statistics, then execution in step 105;
Step 105 does not connect the described P2P application that increases newly, and the P2P that abandons extraction uses link information, finishes.
Can illustrate with an example for step 100.For example, " %13BitTorrent%20Protocol " is used for identifying the BT agreement or uses the BT type of message of the software communication process of BT agreement work, can be used as the static recognition feature of BT agreement with it.The BT client that no matter adopts why type, the BT agreement of its use all has this feature when carrying out the data message encapsulation.And for example the protocol characteristic of Edonkey can be set as follows:
E3 96 FF F0 loaded lengths 6
E3 A2 FF F0 loaded length 6
E3 97 loaded lengths 34
E3 9A loaded length 18
E3 92 loaded lengths 10
Can discern according to its behavioural characteristic for some agreement that is difficult to carry out with single message static nature P2P identification in addition, be that example can be set as follows with the Edonkey agreement equally:
1) Edonkey2000 uses the UDP message of a lot of 6 byte longs to come send server state request data package (client-requested server state steps characteristic illustrates that this connection is in this state).
2) the general length of using is that the bag of 25 bytes is realized locating function in the Edonkey2000 use, therefore can think in the actual session with length to be that 25 Edonkey2000 packet is as the sign of searching state.
Can send a large amount of UDP messages when 3) client connects in the network other node in the Edonkey2000 use, wherein this client is mainly used two ports, and one of them is used for being connected with server end, and another transmission connection request is to other equal clients.See Fig. 3.Therefore we can to set this status flag be that same source IP uses a certain udp port to send a large amount of UDP messages to surpass a certain threshold value to other a large amount of different purpose IP and then be judged as P2P and use connection request in the unit interval.
Present embodiment is set P2P application traffic control strategy: when current bandwidth takies first thresholding that is lower than setting (can be set at total bandwidth 90%) here, think to have enough idle flows, allow to increase P2P and use; When current bandwidth takies second thresholding that surpass to set (can be set at 95% of total bandwidth here, should more than or equal to first thresholding), block the current part or all of P2P application of carrying out.The present invention is not limited to this, and the control strategy that can also use other judges whether block or increase P2P and uses.
Concrete scheme as for P2P application traffic control strategy (is adjusted the concrete quantity that P2P uses, flow restriction or the like), in actual flow process, be determine during according to the fructufy that detects (such as increase several p2p, each flow restriction what, need to formulate in real time).As shown in Figure 2, the flow chart of the P2P automatic flow of embodiment of the invention network equipment control comprises following steps:
S1 periodically adds up the current network flow situation;
The time interval (periodically) according to setting is added up the traffic conditions in the current network environment, determines the ratio of present flow rate occupied bandwidth;
S2, according to this ratio with set thresholding, in conjunction with P2P application traffic control strategy, determine current flow control mode:, allow to increase P2P and use execution in step S3 if when, promptly there is enough idle flow less than first thresholding in this ratio; If this ratio, need be carried out current P2P flow reduction greater than second thresholding or be reduced execution in step S4; If this ratio is between first, second thresholding, then do not handle, finish;
S3 determines that the newly-increased P2P that will connect uses and quantity, finishes;
S4 determines that by the quantity of present flow rate control mode regulation the P2P that will block uses connection and execution, and the corresponding P2P that has connected that will preserve after finishing uses the link information deletion, finishes.
Particularly, can determine that the P2P that will block uses, and as preferentially blocking of storing earlier, and deletes relevant entry in storage device according to the sequencing that P2P uses link information storage.If the P2P that has connected that preserves uses the number that link information quantity is formulated less than P2P application traffic controlling schemes, then directly delete the P2P that has all connected in the storehouse and use link information.
As shown in Figure 3, be the P2P automatic flow control system Organization Chart of the embodiment of the invention.Comprise that network traffics controller 302, storage device 303, tactful device for carrying out said 304, P2P use identifier 300 and P2P application processor 301.
P2P uses identifier 300, be used for current message being carried out the data pack protocol analysis of stratification according to the different characteristic that the data message of actual acquisition and all kinds of P2P use, as definite current mutual data are P2P application types as described in the P2P application also need be determined, and the P2P application link information of extracting in the data message of being caught sends to P2P application processor 301;
P2P application processor 301, be used for using link information and carry out respective handling according to the P2P that P2P application identifier 300 is sent, as judge that it is that newly-increased P2P uses connection, then judge whether to increase P2P application connection according to present flow rate control mode of extracting from described storage device 303 and implementation status thereof, as allowing, the P2P that newly-increased P2P application link information is sent in the tactful device for carrying out said 304 uses link block, otherwise, abandon newly-increased P2P and use link information.
Network traffics controller 302, be used at interval current network flow condition being added up according to setting-up time, and in conjunction with determining current P2P flow control mode by the flow control strategy of storage device 303 extractions and the present flow rate of statistics, comprise and to increase connection, should block and connect or do not handle three kinds (specifically also can comprise and to connect maximum stream flow that the P2P number of applications that maybe should block and each P2P use etc.), current P2P flow control mode is kept in the storage device 303, and the P2P that preceding two kinds of control modes are sent to respectively in the tactful device for carrying out said 304 uses link block and blocking-up module.
Storage device 303 is used to preserve the P2P that has connected and uses link information, the flow control policy information of configuration and the information of present flow rate control mode and implementation status;
Strategy device for carrying out said 304 also comprises: P2P uses link block and P2P uses the blocking-up module;
P2P uses link block, after being used to receive newly-increased P2P that P2P application processor 301 sends and using link information, set up corresponding P2P and use connection, to increase P2P then newly uses link information and is saved in the storage device 303 and is labeled as and connect the P2P number of applications that corresponding this measurement period of increase has connected.
P2P blocks module, the P2P flow control mode that should block connection that transmits according to network traffics controller 302, the P2P of connection of respective numbers uses link information and blocks corresponding P2P application and connects in the extraction storage device 303, deletes corresponding P2P then and uses link information or it is not changed to connection.
Some specific implementations of said apparatus function are seen the description in the said method, repeat no more herein.
Use example for one that below is above embodiment:
No matter whether current have a P2P data interaction (not triggering because of the existence of P2P data interaction), the current network flow situation is carried out detail statistics according to pre-set time interval.Mainly be in order to reflect the byte number of current network flow transmission each second, for the situation that takies of network total bandwidth.For example current network flow is 1.5M/ second, and the network total bandwidth is 2M, and then the present flow rate occupied bandwidth is 75%.Formulate the concrete scheme of new P2P applying control strategy according to the traffic conditions of this moment afterwards and provide corresponding information to carry out associative operation to strategy enforcement device and storage device.It is 90% of total bandwidth that supposing the system preestablishes first thresholding, illustrates that then current P2P utilizable flow is 15% is 300k/ second.Then can formulate new P2P application controls rule and connect 10, and each connection speed is restricted to and is no more than 30k/ second for increasing P2P.The control strategy that the network traffics controller is new with this is handed down to tactful device for carrying out said flow restriction is carried out in the P2P application connection that increases newly.Simultaneously the network traffics controller is used the link information write storage device until reaching 10 with the P2P that increases newly that P2P uses identifier and provides.The P2P that provides uses source IP, purpose IP that link information comprises that corresponding P2P connects, source port, destination interface etc.; Storage device is used the record that connects with this as current available P2P.
Suppose that network flow statistic finds that the present flow rate occupied bandwidth surpasses first thresholding 90% after certain time interval, then explanation has non-P2P to use the support of service needed more bandwidth this moment.Then need to reduce the central P2P application traffic of current network environment so that provide more Internet resources, but this moment, flow surpassed second thresholding 95% as yet, can not change current flow control mode to other normal Networks.
Suppose that the present flow of current network flow statistics discovery has taken the bandwidth of 95%--100%, surpass second thresholding, show that the current network environment does not have idle bandwidth to use, need to cut down current P2P flow and discharge more resources to other normal Networks, adjust the P2P applying control strategy after traffic statistics, the concrete scheme of for example new strategy is to close current 5 P2P that using to connect; 5 link informations then are provided, and use link information according to these 5 current P2P these 5 connections are blocked, these 5 P2P that deletion has simultaneously been preserved use link information; Like this, the P2P that is in these 5 connections uses termination, for other normal Networks provide 150k/ the bandwidth use of second.If if flow is still excessive then circulate and drop to below 90% or till current P2P uses in the middle of the connection status storage device not record according to this adjustment mode until the current network flow occupied bandwidth after through a time interval.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. the professional automatic flow control method of equity networking P2P is characterized in that,
The network equipment is added up the current network flow situation, determine current flow control mode and execution according to current network traffics that take and flow control strategy: if present flow rate less than first thresholding of setting, then allows the P2P that increases appointment to use connection; If present flow rate, is then blocked the P2P of appointment greater than second thresholding of setting and used connection, described first thresholding is smaller or equal to described second thresholding.
2. method according to claim 1 is characterized in that,
In present flow rate during less than first thresholding set, the described network equipment is also according to the difference of first thresholding of present flow rate and setting, sets the maximum stream flow that maximum quantity that the P2P that allows to increase uses and/or each P2P use and limits;
In present flow rate during greater than second thresholding set, the described network equipment is also according to the difference of second thresholding of present flow rate and setting, definite corresponding P2P that will block uses and carries out, and the corresponding P2P that has connected that will preserve after finishing uses the link information deletion or is not changed to and connects, and finishes.
3. method according to claim 1 and 2 is characterized in that,
The network equipment is according to the time interval of setting the traffic conditions in the current network environment to be carried out periodic statistics.
4. method according to claim 1 and 2 is characterized in that,
The P2P that the described network equipment has been caught appointment uses behind the message as judges that it is that the P2P that increases newly uses, then judge that according to current flow control mode and implementation status can increase the P2P application be connected, if can, then directly connect and write down this P2P that has connected and use link information, upgrade the P2P number of applications that this measurement period has connected simultaneously.
5. method according to claim 4 is characterized in that,
The described network equipment judges that according to current flow control mode and implementation status can increase P2P uses when being connected, as judge that current flow control mode connects for the P2P application that allows to increase appointment, and the P2P that has connected after the last time statistics uses the maximum quantity of the increasable P2P application of determining less than this time statistics, then can increase P2P and use connection, otherwise can not increase.
6. method according to claim 4 is characterized in that,
The described network equipment judges that according to current flow control mode and implementation status can not increase P2P uses when being connected, then abandons the described P2P application link information that increases newly.
7. an equity networking P2P automatic flow control system is characterized in that, comprises the network traffics controller, and the storage device and the tactful device for carrying out said that are connected with this network traffics controller, wherein:
Described network traffics controller, be used for current network flow condition is added up, determine specifying the present flow rate control mode that P2P uses and being kept in the storage device in conjunction with the flow control strategy that from storage device, extracts, less than first thresholding of setting, then allow the P2P that increases appointment to use connection as present flow rate; Greater than second thresholding of setting, the P2P that then should block appointment uses and connects as present flow rate, connects allowing to increase and should block the flow control mode that is connected and send to described tactful device for carrying out said, and described first thresholding is smaller or equal to described second thresholding;
Described tactful device for carrying out said, be used to receive the present flow rate control mode that described network flow statistic device sends, the connection of specifying P2P to use is perhaps blocked the appointment P2P that has connected and is used the corresponding P2P application link information deletion that connects and will preserve or be not changed to connection;
Described storage device is used to preserve the P2P that has connected and uses flow control policy information, present flow rate control mode and the implementation status information of link information, configuration.
8. system according to claim 7 is characterized in that,
Described network traffics controller is in present flow rate during less than first thresholding set, also according to the difference of first thresholding of present flow rate and setting, set the maximum stream flow restriction that maximum quantity that the P2P that allows to increase uses and/or each P2P use and also send to described tactful device for carrying out said; And, in present flow rate during,, determine the corresponding P2P application that will block, and send to described tactful device for carrying out said also according to the difference of second thresholding of present flow rate and setting greater than second thresholding set.
9. according to claim 7 or 8 described systems, it is characterized in that, comprise that also P2P uses identifier and P2P application processor, wherein:
Described P2P uses identifier, is used for determining according to the data message of actual acquisition whether current mutual data are the P2P application of appointment, and the P2P application link information that extracts in the P2P application data message is sent to the P2P application processor;
Described P2P application processor, be used to receive P2P and use the P2P application link information that identifier is sent, as judge that it is that newly-increased P2P uses connection, present flow rate control mode and the implementation status thereof then from storage device, extracted, as judge that current flow control mode connects for the P2P application that allows to increase appointment, and the P2P that has connected after the last time statistics uses the maximum quantity of the increasable P2P application of determining less than this time statistics, judge that then can increase P2P uses and connect, will increase P2P newly and use link information and send to tactful device for carrying out said and connect;
Described tactful device for carrying out said is to use link information according to the newly-increased P2P that receives to specify the connection of P2P application and write down this P2P that has connected application link information, the P2P number of applications that this measurement period of while updated stored has connected.
10. system according to claim 9 is characterized in that,
Described network traffics controller is according to the time interval of setting the traffic conditions in the current network environment to be carried out periodic statistics;
Described P2P application processor judges that according to current flow control mode and implementation status can not increase P2P uses when being connected, then abandons the described P2P application link information that increases newly.
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| CN102025782A (en) * | 2010-12-08 | 2011-04-20 | 成都市华为赛门铁克科技有限公司 | Point-to-point communication method, device and system |
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