KR100990977B1 - Configuring method for peer to peer network - Google Patents

Abstract

The present invention relates to a method for configuring a peer-to-peer network, and more particularly, to a method for configuring a peer-to-peer network capable of minimizing the role of a server. The present invention can provide a peer-to-peer network that can minimize the role of the server since no server is required after the peer-to-peer network has been configured to some extent. In addition, the present invention can provide a peer-to-peer network that can reduce the maintenance cost of the server, because the role of the server is not required much. In addition, since the present invention has no role of a server other than providing an IP address to the first super node, a peer-to-peer that can cause a hacker to lose the willingness to attack by minimizing the hacking value or to minimize the damage even if attacked. It can provide a network.

P2P, file, share, server, breed

Description

How to configure a peer-to-peer network {CONFIGURING METHOD FOR PEER TO PEER NETWORK}

The present invention relates to a method for configuring a peer-to-peer network, and more particularly, to a method for configuring a peer-to-peer network capable of minimizing the role of a server.

P2P, which has been discussed a lot in the internet business recently, is an abbreviation of peer-to-peer (hereinafter referred to as peer-to-peer) and is an implicit term for expressing important changes in the internet business. Peer-to-peer file sharing systems can receive, retrieve, and download information directly from any node connected to the Internet, that is, from a personal computer, unlike traditional methods of finding information on the Internet through search engines. This can extend the information extraction paths that were limited to websites to databases operated by individuals or companies. That is, it manages and manages its own information nationwide or globally, and it is possible to form a community among users who want to share the same information as well as share various information among users.

In a conventional peer-to-peer network, a plurality of nodes are connected to a super node, and a plurality of super nodes to which the plurality of nodes are connected are connected to a server again. That is, in the existing peer-to-peer network, the server is the center of the network. Therefore, the server must know both the list of files that each node wants to share and the IP address of the node and the super node. Supports file sharing of nodes.

However, such a conventional peer-to-peer network uses a centralized server, and the role of the server is important, which may cause damage to hackers. As the size of the peer-to-peer network increases, the maintenance cost of the server increases. There is a problem. In addition, the existing peer-to-peer network has a problem that the entire P2P network is paralyzed when the server is attacked, such as DDos.

An object of the present invention is to provide a peer-to-peer network that can minimize the role of the server.

It is a further object of the present invention to provide a peer to peer network that can be configured at minimal cost.

In order to achieve the above object, the present invention provides a peer-to-peer network including at least one super node to which at least one node is connected, the method comprising: inputting an area to which the node is to be connected; And searching for a super node existence, and changing a super node configuration of the node according to whether a super node exists in the region to be accessed.

And a server assigning an IP address to the super node, the server holding a list of IP addresses of the super nodes according to regions. The step of searching for the existence of the super node in the region to be accessed searches for the IP address of the super node allocated to the region to which the node is to be connected in the IP address list according to the region held by the server.

The step of changing the super node configuration of the node according to whether or not the super node exists in the region to be accessed includes the super node of the region to which the node is to be connected when the super node exists in the region to which the node is to be connected. And a step of changing the node to a super node of the region to which the node is to be connected when there is no super node in the region to which the node is to be connected.

The present invention may further include terminating the super node, and terminating the super node may include terminating the super node normally or forcibly terminating the super node.

Normally terminating the super node may include identifying another node that may become a super node, informing another neighboring super node of an IP address of the other node, and informing the other node and the other neighboring super node. Making a connection, informing the super node whether the other node is connected to another neighboring super node, and connecting another node connected to the super node to the other node to change the other node to a super node. It includes a step. Informing the neighboring super node of the IP address of the other node, the neighboring super node is notified of the IP address of the other node or another node initially connected to the super node which is to be the super node. After notifying the super node whether the other node is connected to another neighboring super node, the method may further include handing over the file sharing list held by the super node to the other node.

The step of forcibly terminating the super node includes the step of forcibly terminating the super node and changing a super node configuration of a node that has been connected to the super node. Changing a super node configuration of a node that has been connected with the super node includes connecting a node that has been connected with the super node to another neighboring super node, or changing a node initially connected with the super node to a super node. do. The step of changing the node first connected to the super node to a super node may include notifying another super node of an IP address of the node initially connected to the super node, and a node connected after the node first connected to the super node. The other super node attempting to connect with the other super node, and notifying the node connected after the node that the other super node is first connected with the super node to the IP address of the node first connected with the super node. And a node connected after the node first connected with the other super node is connected with a node first connected with the super node.

The present invention can provide a peer-to-peer network that can minimize the role of the server since no server is required after the peer-to-peer network has been configured to some extent.

In addition, since the present invention is a distributed network, even if a server denies a service such as a distributed denial of service attack (DDos), it does not affect the entire P2P network, thereby providing a stable peer-to-peer network.

In addition, the present invention can provide a peer-to-peer network that can have an indirect security effect by lowering the value of hackers psychologically hacking the server because the role of the server is not necessary much.

In addition, the present invention can provide a peer-to-peer network that can reduce the maintenance cost of the server, because the role of the server is not required much.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Like reference numerals in the drawings refer to like elements.

1 is a conceptual diagram of a peer to peer network according to the present invention.

As shown in FIG. 1, a peer-to-peer network according to the present invention includes a server, a super node SN ₁ and SN ₂ connected to the server, and nodes N ₁ to N connected to the super nodes SN ₁ and SN ₂ . N ₁₀ ). In addition, a plurality of super nodes SN ₁ and SN ₂ and nodes N ₁ to N ₁₀ are connected to a server by a plurality of super nodes SN ₁ and N ₁₀ connected in a mesh structure.

The server is for allocating an IP address (Internet Protocol address) to a super node in the initial configuration of a peer-to-peer network. The server has a list of IP addresses according to regions. That is, generally, a server is a computer system for providing main information or performing a task, and serves to return a result of performing a task or information requested by a client system to the client system. It only plays the role of assigning to each super node for each region. Also, the peer-to-peer network access program installed on each node automatically accesses the IP address of the local super node. If there is no super node in the region, the peer-to-peer network access program automatically connects to the server and the IP address of the region. To become a super node.

The super node may be a node that satisfies a specific condition among a plurality of nodes, for example, a node that first connects to a server or a node that wants to become a super node. This embodiment illustrates two super nodes, namely a first super node SN ₁ and a second super node SN ₂ , connected to each other as members of a peer to peer network. In addition, the first super node SN ₁ includes first to fifth nodes N ₁ to N ₅ , and the second super node SN ₂ includes sixth to tenth nodes N ₆ to N ₁₀ . Illustrates including the.

Each of these super nodes and nodes is equipped with a peer-to-peer network connection program including a server program and a client program, and the server program and the client program are included in the same peer-to-peer program and are integrated together. It is desirable to be designed.

Next, a method of configuring a peer-to-peer network according to the present invention will be described with reference to the accompanying drawings. Duplicated descriptions of the file sharing network of the present invention described above will be omitted or briefly described.

2 is a flowchart illustrating a method for configuring a peer-to-peer network according to the present invention, and FIGS. 3 to 15 are conceptual diagrams for describing a method for configuring a peer-to-peer network according to the present invention.

Referring to FIG. 2, the method for configuring a peer-to-peer network according to the present invention includes inputting a region (S ₁ ), searching for a super node (S ₂ ), and setting a super node (S ₃ ). And terminating the super node (S ₄ ). In addition, this embodiment illustrates a peer to peer system consisting of two super nodes and ten nodes. In this case, two super nodes are defined as a first super node SN ₁ and a second super node SN ₂ , and ten nodes are defined as _first to tenth nodes N ₁ to N ₁₀ . In addition, the first super node SN _{1 is} connected to the first to fifth nodes N ₁ to N ₅ , and the second super node SN _{2 is} connected to the sixth to tenth nodes N ₆ to N ₁₀ . Example of connected with.

Inputting the area (S ₁₎ enters the area to be connected at the initial stage when running the client program.

Each node can enter the region it wants to connect to become a network member of the region. Of course, if the step (S ₁ ) for inputting the region is omitted, the network member of the region becomes based on the region to which the node is connected.

The step S ₂ of searching for the super node searches whether the super node exists in the area to which the node N itself shown in FIG. 3 wishes to access.

The server maintains a list of IP addresses by region, and gives each region's super node an IP address according to each region. Also, according to this, the first node N connected to the region shown in FIG. 3 may search for the IP address of the super node assigned to the region, and determine whether or not the super node exists in the region.

Table 1 shows a list of IP addresses by region.

TABLE 1

Referring to Table 1, the server has an IP address according to a country and a subregion of the country, and assigns the IP address of the region to the super node of the region. Also, according to this, the node (N) connected in the region is connected to the server and notified of the super node IP address of the region, and the existence of the super node in the region can be known by searching for the existence of the IP address. have. Of course, Table 1 exemplifies a list of IP addresses according to the names of the top-level units of the country, but the present invention is not limited thereto, and the regions shown in Table 1 may be classified into lower units.

Setting the super node (S ₃ ) includes the step of becoming a super node or connecting to the super node.

In the step of becoming a super node, as shown in FIG. 4, the node N becomes a super node of the region, that is, a first super node SN ₁ .

At this time, the first super node SN ₁ receives an IP address of a corresponding region from the server and replaces its IP address with an IP address assigned from the server. In this way, the IP address is replaced so that other nodes that will access the local area can recognize the existence of the first super node SN ₁ . In addition, as shown in FIG. 5, the first node N ₁ connected after the first super node SN ₁ is generated has a first super node SN ₁ , and thus, the first super node SN ₁ is present. The node SN ₁ is connected.

In the step of accessing the super node, if the super node already exists in the region, the node accesses the super node of the region. In this case, the node cannot be connected when there are more than a certain number of nodes connected to the super node of the corresponding area, and in this case, attempts to connect to another adjacent super node. Of course, if another nearby super node is also unreachable, the node is itself another super node in the area.

According to the present invention, as shown in FIG. 6, the first to fifth nodes N ₁ to 5 are connected to the first super node SN ₁ . N ₅ ) is connected and the sixth to tenth nodes N ₆ to N ₁₀ are connected to the second super node SN ₂ , that is, at least one cluster to which at least one node is connected to the super node is connected. You can configure a peer-to-peer network.

Terminating the super node (S ₄ ) is a step of leaving the super node in the peer-to-peer network configured as described above, which normally terminates the super node (S _4-1 ) or forcibly terminating the super node. (S _4-2 ).

Normally terminating the super node (S _4-1 ) is a case in which the super node intending to leave the peer-to-peer network normally terminates the program. It exemplifies as a super node SN ₁ .

The first super node SN ₁ may be configured as the first to fifth nodes N ₁ to 5 before leaving the peer-to-peer network. N ₅ ) to see if there is a node that wants a super node. At this time, when there is a node that desires a super node, and the node that desires a super node is the first node N ₁ , as shown in FIG. 7, the first super node SN ₁ is the first node N ₁ . Pass the list of shared files you are saving to. In addition, the second to fifth nodes (N ₂ to). N ₅ ) and the neighboring super node, for example, the second super node SN ₂ , are informed of the IP address of the first node N ₁ .

On the other hand, if there is no node wishing to be a super node, the first node to be connected, for example, the second node N ₂ is used as the super node, and in this case, the IP address of the second node N ₂ is used as the first node. Nodes N ₁ and third to fifth nodes N ₃ to N ₅ ) and a second super node SN _{2 that} is an adjacent super node.

Subsequently, as shown in FIG. 8, when the node to be a super node is the first node N ₁ , the first node N ₁ is a new super node of the corresponding region, that is, a third super node SN _3. Accordingly, the third super node SN ₃ is connected to the second super node SN ₂ which is an adjacent super node. In addition, when the third super node SN ₃ succeeds in connecting with the second super node, the third super node SN ₃ connects to the first super node SN ₁ with the second super node SN ₂ . Be notified.

Next, as shown in FIG. 9, each node connected to the first super node SN ₁ , that is, the second to fifth nodes N ₂ to N ₅₎ is connected to the new super node, the third super node (SN _3), the third super node (SN ₃₎ and the second to the fifth node (N ₂ to When N ₅ ) is connected, the first super node SN ₁ , which is an existing super node, terminates the connection normally.

The step S _{4-2 of} terminating the super node is a case in which the super node intending to leave the peer-to-peer network is abnormal, that is, forcibly terminates the program. The super node is illustrated as a first super node SN ₁ .

Referring to FIG. 10, the first super node SN ₁ may be a first to fifth node N ₁ to N ₁ . N ₅ ) and the second super node SN ₂ forcibly terminate the program without informing their termination to the first to fifth nodes N ₁ to 5. N ₅ ) and the connection with the second super node SN ₂ were abnormally terminated.

In this case, as shown in FIG. 11, the first connected node in the region, for example, the first node N ₁ , is a second super node SN _{2 that} is an adjacent super node to become a member of the adjacent super node. Try to connect to At this time, when the first node N ₁ successfully connects with the second super node SN ₂ , the first node N ₁ becomes a new member of the second super node SN ₂ and the first super node. Second to fifth nodes N ₂ to 5 that have been connected to (SN ₁ ) N ₅₎ also also when the second super node (SN ₂₎ and connected to be a member of the second super-node (SN _2). However, if the connection is impossible due to exceeding the maximum number of connection nodes of the second super node SN ₂ , an attempt is made to connect with another adjacent super node.

Referring to FIG. 12, when a connection is denied to all neighboring super nodes, the node denied access, for example, the first node N ₁ , is a new super node of the region, that is, a third super node. It becomes a node SN ₃ . In addition, the first node N ₁ is connected to the second super node SN ₂ to inform that it is a new super node and notifies its IP address.

Referring to FIG. 13, the second node N ₂ , which has been connected to the first super node SN ₁ , also has a member of the second super node SN ₂ , which is a super node adjacent to the first node N ₁ . Attempt to connect to the second super node SN ₂ . At this time, since a third super node SN ₃ , which is a new super node, is already created in the region, the second super node SN ₂ receives the IP address of the third super node SN ₃ from the second node N ₂ . Notify Also, as shown in FIG. 14, the second node N ₂ is connected to the third super node SN ₃ , which is a new super node of the corresponding region.

Referring to FIG. 15, thereafter, third to fifth nodes N ₃ to N ₃ . N ₅ ) attempts to become a member of the second super node SN ₂ , which is also an adjacent super node, and as described above, the third super node, which is the new super node of the region, from the second super node SN ₂ . The IP address of the node SN ₃ is informed and connected to the third super node SN ₃ .

As described above, the present invention, the server performs only the role of assigning the IP address of the region to the region-specific super node is initially created, after that, the generated super node is assigned to the neighboring super node as its spores breeding You can tell it to configure a peer-to-peer network with your own IP address. That is, since the peer-to-peer network according to the present invention does not need a server after the peer-to-peer network is configured to some extent, the role of the server can be minimized. In addition, since the peer-to-peer network according to the present invention does not need a large role of the server, it is possible to reduce the maintenance cost of the server. In addition, since the present invention has no role of a server other than providing an IP address to the first super node, the value of hacking is reduced, so that a hacker loses the willingness to attack and minimizes damage even if attacked. That is, even if a hacker attacks the server, the super nodes and nodes are not connected to the server, so there is no damage due to hacking. Even if an individual super node and nodes are attacked, the corresponding super nodes and nodes need to terminate the connection, thus preventing hacking. have.

Although described above with reference to the drawings and embodiments, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit of the invention described in the claims below. I can understand.

1 is a conceptual diagram of a peer to peer network in accordance with the present invention.

2 is a flow chart of a method for configuring a peer-to-peer network in accordance with the present invention.

3 to 15 are conceptual diagrams for explaining a method for configuring a peer-to-peer network according to the present invention.

Claims (11)

A peer to peer network composed of at least one super node to which at least one node is connected, Inputting an area to which the node wants to access; Searching for whether a super node exists in the region to be accessed; And changing a super node configuration of the node according to whether or not a super node exists in the region to be connected to. The method according to claim 1, A server assigning an IP address to the super node, And the server maintains a list of IP addresses of super nodes according to regions. The method according to claim 2, The step of searching for the presence of a super node in the region to be accessed, And searching for an IP address of a super node allocated to an area to which the node wants to access from an IP address list according to an area owned by the server. The method according to claim 2, The step of changing the super node configuration of the node according to whether the super node exists in the region to be connected, Connecting the node with the super node of the region to which the node is to be connected when the super node exists in the region to which the node is to be connected, or And changing the node to a super node of a region to which the node is to be connected when there is no super node in the region to which the node is to be connected. The method according to claim 1, Terminating the super node, Terminating the super node comprises normal terminating the super node or forcibly terminating the super node. The method according to claim 5, Normally terminating the super node, Identifying other nodes that may become super nodes, Notifying another neighboring super node of the IP address of the other node; Connecting the other node and the adjacent other super node; Notifying, by the other node, the super node whether or not the other node is connected to the other super node; And connecting the other node connected to the super node to the other node so as to change the other node to the super node. The method according to claim 6, Notifying another neighboring super node of the IP address of the other node, And a method of notifying another neighboring supernode of the IP address of another node or another node initially connected to the supernode. The method according to claim 6, After the other node notifies the super node whether the other node is connected to the other super node, And taking over a file share list held by the super node to the other node. The method according to claim 5, Forcibly terminating the super node, Forcibly terminating the super node; And changing a super node setting of a node that has been connected with the super node. The method according to claim 9, Changing the super node configuration of the node that has been connected to the super node, Connecting a node that has been connected with the super node to another neighboring super node, or changing a node initially connected with the super node to a super node. The method according to claim 10, Changing the first node connected to the super node to a super node, Notifying another super node of an IP address of a node initially connected to the super node; A node connected after the node first connected to the super node attempts to connect with the other super node; Notifying, by the other super node, the IP address of the node initially connected to the super node to a node connected after the node first connected to the super node; And a node connected after the node first connected with the other super node is connected with a node first connected with the super node.

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