CN101662508B - Method for data transmission based on point-to-point protocol, device and system thereof - Google Patents

Abstract

The embodiment of the present invention discloses a P2P data transmission method based on the point-to-point protocol, including: receiving and detecting the P2P message sent by the user, and when the P2P message is a request message, searching for the corresponding P2P message from the local Seed and resource information; when the seed and resource information corresponding to the P2P message is found locally, simulate the seed corresponding to the P2P message to establish a connection with the user; send the resource information to the user . In addition, the embodiment of the present invention also discloses a corresponding device and system for P2P data transmission based on the point-to-point protocol. By simulating the seed node when the user establishes a connection request with the seed, and transmitting the resource information stored locally to the user, it can effectively Reduce P2P traffic in the public network, greatly reduce the bandwidth requirements of the public network, and meet the user's P2P application requirements.

Description

Method, device and system for data transmission based on point-to-point protocol

technical field

The present invention relates to communication technology, in particular to a method, device and system based on point-to-point protocol (P2P; Peer to Peer) data transmission.

Background technique

With the rapid development of the Internet and its applications, many new technologies and business types have emerged, such as: P2P data transmission, instant messaging, online games and network media, etc., among which P2P technology is established through direct connection between Peer and Peer. The data transmission has completely changed the network model based on the client/server (Client/Server; C/S) structure, making the network present a distributed architecture. In particular, network bandwidth can be fully utilized through P2P technology. Various applications based on P2P technology are no longer limited by the processing capacity of the server, and can better meet applications with large bandwidth requirements such as data sharing and video transmission. Applications are increasingly becoming a basic need for users.

Different from the C/S model, P2P is a peer-to-peer network model. In the C/S model, the server is the processing center of the business, which is generally a high-performance computer with powerful processing capabilities and large bandwidth, and is equipped with high-end server software, while storing a large number of business and user-related databases. The user is an application terminal with simple processing capabilities, and mainly requests the server to obtain the required data or services. In the P2P model, any two Peers are both clients and servers, and they have equal status to each other. They establish connections with each other to transmit data, and the same Peer can establish a peer-to-peer relationship with multiple Peers. . In the P2P network, the function of the server is weakened, and it may not even be necessary to deploy a server. Peer can request resources from any possible Peer in the entire network, so network resources can be greatly utilized. Among them, the Peer that is requested to provide resources can also be called a peer node, a seed or a seed node.

Due to the distributed nature of the P2P network and its endless acquisition and utilization of network resources, many problems have appeared in the current operator network, especially in the aspect of network operation and management, P2P applications occupy the network without limit Bandwidth, and it is difficult to be identified and controlled, which makes the operator's network scale more and more large, and at the same time does not get any benefits, and other applications, such as Internet access, also suffer from quality degradation due to insufficient bandwidth, which affects user satisfaction. Therefore, it is necessary to control and optimize the management of P2P data transmission on the network.

Let’s take home users accessing the network as an example. The network edge device for accessing users is Broadband Remote Access Server (BRAS) or Service Router (Service Router, SR). At present, home users mainly use digital subscriber lines. The access multiplexer (Digital Subscriber Line Access Multiplexer; DSLAM) or the access/aggregation switch is connected to the carrier network, and user access management control such as user authentication and IP address assignment is performed through the network edge device BRAS/SR. Then connect to the operator's network and obtain various services.

Generally, one BRAS/SR device can support more than 128K user access. Considering data sharing and video-on-demand, two popular P2P applications, if a user reserves a 1M Asymmetrical Digital Subscriber Line (ADSL; ADSL) and 8M video traffic bandwidth, 10,000 users need to occupy 10G and 80G network bandwidth, such a broadband scale is unbearable for the network. In addition, for the broadband access method of the community, the exit of the general community is a Fast Ethernet (FE) interface that provides a maximum bandwidth of 100M or a Gigabit Ethernet (GE) interface that can provide a bandwidth of 1G. It is difficult to meet the needs of all users in the community.

Contents of the invention

In view of this, the main purpose of the embodiment of the present invention is to provide a method and device based on point-to-point protocol data transmission, which can meet the application requirements of P2P as much as possible, and at the same time reduce the bandwidth occupation of the public network as much as possible. satisfaction.

The purpose of the embodiments of the present invention is achieved through the following technical solutions:

The embodiment of the present invention provides a P2P data transmission method based on the point-to-point protocol, including: receiving and detecting the P2P message sent by the user, and when the P2P message is a request message, searching for the corresponding P2P message from the local Seed and resource information; when the seed and resource information corresponding to the P2P message is found locally, simulate the seed corresponding to the P2P message to establish a connection with the user; send the resource information to the user .

In addition, the embodiment of the present invention also provides a device based on point-to-point protocol data transmission, including a main control unit, a hardware seed unit and a memory unit; wherein the main control unit is used to receive and detect the P2P message sent by the user, When the P2P message is a request message, search for the seed and resource information corresponding to the P2P message from the memory unit; the hardware seed unit is used to find the P2P message in the memory unit When the seed and resource information corresponding to the message are simulated, the seed corresponding to the P2P message is established to establish a connection with the user, and the resource information is sent to the user; the memory unit is used for when the When the seed and resource information corresponding to the P2P message is used, an entry of the seed and resource information corresponding to the P2P message is established, and the resource information transmitted between the user and the seed corresponding to the P2P message is saved.

In addition, the embodiment of the present invention also provides a system based on point-to-point protocol data transmission, including: users, network access devices, P2P switching devices and seeds, wherein: the users are used to send P2P messages; the seeds are used to Provide the required resource information for the user; the P2P switching device is used to receive the user's P2P message forwarded by the network access device, and when the P2P message is a request message, search the local Seed and resource information corresponding to the P2P message; when the seed and resource information corresponding to the P2P message are found locally, the seed corresponding to the P2P message is simulated to establish a connection with the user, and the resource information is Send it to the user; when the seed and resource information corresponding to the P2P message cannot be found locally, forward the P2P message to the network access device; the network access device is used to forward the user sending the P2P message to the P2P switching device, and forwarding the P2P message to the seed corresponding to the P2P message when receiving the P2P message from the P2P switching device.

It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that the method, device and system for data transmission based on the point-to-point protocol provided by the embodiments of the present invention simulate the seed node when the user establishes a connection request with the seed, and The resource information stored locally is transmitted to the user, thereby effectively reducing the P2P traffic in the public network, greatly reducing the bandwidth requirement of the public network, and meeting the user's P2P application requirements.

Description of drawings

Fig. 1 is a flow chart of a method for data transmission based on a point-to-point protocol according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a device for data transmission based on a point-to-point protocol according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a system for data transmission based on a point-to-point protocol according to an embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the following examples are given and the present invention is further described in detail with reference to the accompanying drawings.

Referring to FIG. 1, FIG. 1 is a flowchart of a method for data transmission based on a point-to-point protocol according to an embodiment of the present invention;

The implementation process of the method based on point-to-point protocol data transmission provided by the embodiment of the present invention is as follows:

102. Receive and detect the P2P message sent by the user, and search locally for the seed and resource information corresponding to the P2P message when the P2P message is a request message;

104. When finding the seed and resource information corresponding to the P2P message locally, simulating the seed corresponding to the P2P message to establish a connection with the user;

106. Send the resource information to the user.

Wherein, the seed generally refers to a peer node that is requested to provide resources. In the above 104, since the seed and resource information corresponding to the P2P message have been found locally, there is no need to send the P2P message to the real seed.

Optionally, when the embodiment of the present invention is implemented, when the seed and resource information corresponding to the P2P message cannot be found locally, the P2P message is forwarded to the network access device, so that the network access device The ingress device forwards the P2P message to the seed corresponding to the P2P message.

In addition, when the seed and resource information corresponding to the P2P message cannot be found locally, an entry of the seed and resource information corresponding to the P2P message can be locally established, and the user and the The resource information transmitted between the seeds corresponding to the P2P message. Wherein, the resource information can be learned by listening to the resource transmission message between the user and the seed. If there are multiple seeds that can provide the same resource information, corresponding entries of the multiple seeds and resource information can be established locally, and only one copy of the resource information needs to be saved locally. In this way, multiple seeds can be simulated according to the user's needs to transmit the resource information to the user during specific implementation.

Furthermore, in the specific implementation of the embodiments of the present invention, usually locally stored seeds and resource information need to be aged regularly, for example, through regular scanning, torrents or resource information that have not been requested by users for a long time need to be deleted. In addition, if the seed and resource information corresponding to the P2P message cannot be found locally, an entry of the seed and resource information corresponding to the P2P message needs to be newly established locally. If there is not enough memory space to store the newly established For the seed and resource information entries corresponding to the P2P message, the least frequently used seed and resource information entries may also be deleted to store the seed and resource information entries corresponding to the newly created P2P message.

It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that the method for data transmission based on the point-to-point protocol provided by the embodiments of the present invention simulates the seed node when the user establishes a connection request with the seed, and saves the locally stored The resource information is transmitted to the user, thereby effectively reducing the P2P traffic in the public network, greatly reducing the bandwidth requirement of the public network, and meeting the user's P2P application requirements.

Referring to FIG. 2, FIG. 2 is a schematic diagram of a device for data transmission based on a point-to-point protocol according to an embodiment of the present invention;

The device based on point-to-point protocol data transmission provided by the embodiment of the present invention includes a main control unit 202, a hardware seed unit 204 and a memory unit 206:

The main control unit 202 is configured to receive and detect the P2P message sent by the user, and when the P2P message is a request message, search the seed and resource information corresponding to the P2P message from the memory unit 206;

The hardware seed unit 204 is configured to, when finding the seed and resource information corresponding to the P2P message in the memory unit 206, simulate the seed corresponding to the P2P message to establish a connection with the user, and The above resource information is sent to the user; when the seed and resource information corresponding to the P2P message cannot be found in the memory unit 206, the P2P message is forwarded to the network access device, so that the network access device Forwarding the P2P message to the seed corresponding to the P2P message;

The memory unit 206 is configured to, when the seed and resource information corresponding to the P2P message cannot be found, create an entry of the seed and resource information corresponding to the P2P message, and store the user and the P2P The resource information transmitted between the seeds corresponding to the message.

It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that the device for data transmission based on the point-to-point protocol provided by the embodiments of the present invention simulates the seed node when the user requests to establish a connection with the seed, and saves the locally stored The resource information is transmitted to the user, thereby effectively reducing the P2P traffic in the public network, greatly reducing the bandwidth requirement of the public network, and meeting the user's P2P application requirements.

Referring to FIG. 3, FIG. 3 is a schematic diagram of a system based on point-to-point protocol data transmission according to an embodiment of the present invention;

The system based on point-to-point protocol data transmission provided by the embodiment of the present invention includes: user 302, network access device 304, P2P switching device 306 and seed 308, the network access device 304 is usually BRAS/SR, and the user 302 It is usually a host; the specific solution includes: the user 302 is used to send a P2P message, wherein the P2P message may be a request message for requesting resource information; the seed 308 is used to provide the user 302 with the required resource information. The P2P switching device 306 is configured to receive and detect the P2P message of the user 302 forwarded by the network access device 304, and when the P2P message is a request message, search locally for the seed and resource information corresponding to the P2P message; When the seed and resource information corresponding to the P2P message are found locally, the seed corresponding to the P2P message is simulated to establish a connection with the user 302, and the resource information is sent to the user 302; When the seed and resource information corresponding to the P2P message cannot be found locally, the P2P message is forwarded to the network access device 304, and an entry of the seed and resource information corresponding to the P2P message is locally established, and The resource information transmitted between the user and the seed corresponding to the P2P message is stored locally. The network access device 304 is configured to forward the P2P message sent by the user 302 to the P2P switching device 306, and when receiving the P2P message sent by the P2P switching device 306, forward the P2P message to the P2P message The corresponding seed 308.

It should be noted that, in the specific implementation of the embodiment of the present invention, the network access device can identify the P2P message by monitoring the user service flow, for example, identify the P2P message through the deep message detection mechanism, and then The P2P packet is sent to the P2P switching device. In addition, the network access device can also send all user traffic to the P2P switching device, and the P2P switching device will identify the user's P2P packets.

It can be seen from the technical solutions provided by the above-mentioned embodiments of the present invention that a system based on point-to-point protocol data transmission provided by the embodiments of the present invention simulates the seed node when the user establishes a connection request with the seed, and saves the locally stored The resource information is transmitted to the user, thereby effectively reducing the P2P traffic in the public network, greatly reducing the bandwidth requirement of the public network, and meeting the user's P2P application requirements.

Those of ordinary skill in the art can understand that all or part of the steps in the methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM/RAM, disk, CD, etc.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technology can easily think of changes or replacements within the technical scope disclosed in the present invention. , should be covered within the protection scope of the present invention.

Claims (9)

1. A method based on point-to-point protocol P2P data transmission, characterized in that said method is carried out by a P2P switching device, said method comprising: Receive and detect (102) the P2P message sent by the user forwarded by the network access device, and when the P2P message is a request message, search for the seed and resource information corresponding to the P2P message from the local, and the seed uses to provide the user with the resource information; When the seed and resource information corresponding to the P2P message are found locally, the seed corresponding to the P2P message is simulated to establish a connection with the user (104); The resource information is sent to the user (106). 2. The method according to claim 1, characterized in that the method further comprises: When the seed and resource information corresponding to the P2P message cannot be found locally, forward the P2P message to the network access device, so that the network access device forwards the P2P message to the The seed corresponding to the above P2P packet. 3. The method according to claim 2, further comprising: when the seed and resource information corresponding to the P2P message cannot be found locally, establishing the seed corresponding to the P2P message locally and resource information entries, and store resource information transmitted between the user and the seed corresponding to the P2P message locally. 4. The method according to claim 1, further comprising: regularly aging the locally stored seed and resource information. 5. A device based on point-to-point protocol P2P data transmission, characterized in that the device is a P2P switching device, and the device includes a main control unit (202), a hardware seed unit (204) and a memory unit (206); The main control unit (202) is configured to receive and detect the P2P message sent by the user forwarded by the network access device, and when the P2P message is a request message, search the memory unit (206) for the Seed and resource information corresponding to the P2P message, the seed is used to provide the user with the resource information; The hardware seed unit (204) is configured to simulate the seed corresponding to the P2P message and establish with the user when the seed and resource information corresponding to the P2P message are found in the memory unit (206). Connect, and send the resource information to the user; The memory unit (206) is configured to, when the seed and resource information corresponding to the P2P message cannot be found, create an entry of the seed and resource information corresponding to the P2P message, and save the user and the The resource information transmitted between the seeds corresponding to the above-mentioned P2P message. 6. The device according to claim 5, characterized in that, the hardware seed unit (204) is also used for when the seed and resource information corresponding to the P2P message cannot be found in the memory unit (206) , forwarding the P2P message to the network access device, so that the network access device forwards the P2P message to a seed corresponding to the P2P message. 7. A system based on point-to-point protocol data transmission, characterized in that it includes: user (302), network access device (304), P2P exchange device (306) and seed (308), wherein: The user (302) is used to send P2P messages; The seed (308) is used to provide the user (302) with required resource information; The P2P switching device (306) is used to receive the P2P message of the user (302) forwarded by the network access device (304), and when the P2P message is a request message, search for the P2P message locally Seed and resource information corresponding to the text; when the seed and resource information corresponding to the P2P message are found locally, the seed corresponding to the P2P message is simulated to establish a connection with the user (302), and the resource The information is sent to the user (302); when the seed and resource information corresponding to the P2P message cannot be found locally, the P2P message is forwarded to the network access device (304); The network access device (304) is used to forward the P2P message sent by the user (302) to the P2P switching device (306), and when receiving the P2P packet sent by the P2P switching device (306), When sending a message, forward the P2P message to the seed corresponding to the P2P message (308). 8. The system according to claim 7, characterized in that the P2P switching device (306) is further configured to locally establish an entry of the seed and resource information corresponding to the P2P message, and locally save the Resource information transmitted between the user (302) and the seed (308) corresponding to the P2P message. 9. The system according to claim 7, characterized in that the network access device (304) is a broadband access server or a service router.

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