CN103618801B - Method, equipment and the system of a kind of P2P resource-sharing - Google Patents

Abstract

The invention discloses a P2P resource sharing method, equipment and system. Involved in the field of communication, P2P file sharing is realized by introducing edge super nodes. The method provided by the embodiment of the present invention includes: the first edge super node determines that the local information does not contain the first resource ID, the first edge super node receives the query response message sent by the second edge super node, and the query response message contains Destination address, source address, and Payload. The source address is the address of the second node that stores the first resource, and the source address is translated by the IPV4/IPV6 interworking gateway. It is the same as the network domain type of the first edge super node. The Payload contains the first Two node IDs, the file key of the first resource, and the actual IP address of the first resource; parse the first query response message, replace the actual IP address in the Payload with the source address and forward it to the first node requesting the query .

Description

A method, device and system for P2P resource sharing

technical field

The present invention relates to the communication field, in particular to a P2P resource sharing method, device and system.

Background technique

Peer-to-peer (P2P for short) technology is also called peer-to-peer Internet technology. In a P2P network, any computer can be used as both a server and a client, and the relationship between nodes is equal. . Each user can directly connect to other users' computers and exchange files without connecting to the server for browsing and downloading. In the whole process, the message is transmitted along the path in the P2P network through the forwarding of nodes. Because of the elimination of intermediate links, P2P technology makes communication on the network easier and more direct. P2P has changed the status quo that the Internet is centered on large websites, making it return to decentralization and returning power to users. Moreover, in terms of performance, because the load is shared by each node, the network efficiency is higher; in terms of function, each node has the same importance, and the damage of a single node to the entire system is the same, and the service is rarely paralyzed when an important node fails. Condition.

IPv6 (Internet Protocol Version 6) is the next-generation IP protocol of IPv4. IPv6 technology expands the 32-bit address in IPv4 to 128-bit, which can fully meet the needs of various services for IP addresses in the future, and simplifies the header and enhances security performance. . However, the deployment and implementation of IPv6 technology cannot be accomplished overnight, and the coexistence of IPv6 and IPv4 will last for a long time, so the intercommunication technology between the two networks is very important to realize the smooth transition from IPv4 to IPv6.

In a P2P network, the routing table contains static IP addresses, and the routing table tightly couples the global node number with the IP address. Routing query, object location, and message forwarding require the establishment of the underlying Transmission Control Protocol (TCP) between nodes. Connection, which requires the remote node to have a permanent IP address to ensure the smooth progress of P2P routing and positioning. If the remote IP address changes, it will not be able to establish a normal connection and communication with the remote node, resulting in the destination being unreachable, thus affecting the effectiveness and accuracy of P2P routing and object resource location.

In the scenario of IPv4 and IPv6 network interworking protocol, when address translation is used, IPv6 and IPv4 address translation has non-one-to-one mapping or dynamic mapping, resulting in the same IPv6 address at different times may be translated into different The IPv4 address of the remote end may change, and the route may become unreachable.

Contents of the invention

Embodiments of the present invention provide a P2P resource sharing method, device and system to realize P2P resource sharing under the mixed networking of IPv6 and IPv4.

In order to achieve the above purpose, the technical solution adopted in the embodiment of the present invention is:

In the first aspect, a P2P resource sharing method is provided, including:

The first edge super node receives a first query request forwarded by the first super node, wherein the first query request includes a first resource ID that the first node requests to query;

The first edge super node queries the local information of the first edge super node according to the first resource ID, wherein the local information of the first edge super node includes resources that the first edge super node can obtain ID, and the node ID and IP address corresponding to each resource ID;

If the first edge super node determines that the local information of the first edge super node does not contain the first resource ID, then forward the first query request to the second edge super node, so that the first edge super node Two edge super nodes search for the first resource in the network domain where the second edge super node is located, wherein the first edge super node and the second edge super node are connected through an IPV4/IPV6 interworking gateway, so The first edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the first edge super node is in the IPV6 network domain, and the second edge super node is in the IPV4 network domain;

The first edge super node receives the first query response message sent by the second edge super node, wherein the first query response message includes a destination address, a source address, and a Payload, and the destination address is The address of the first node, the source address is the address of the second node storing the first resource, and after the source address is translated by the IPV4/IPV6 interworking gateway, it is the same as the first edge super node The network domain types are the same, and the Payload includes the second node ID, the file key of the first resource, and the actual IP address of the first resource;

The first edge supernode parses the first query response message, and if it is determined that the type of the actual IP address in the Payload is different from the IP address type of the network domain where the first edge supernode is located , then replace the actual IP address in the Payload with the source address in the first query response message;

The first edge super node forwards the first query response message to the first node, so that the first node establishes a P2P connection with the second node according to the first query response message, And share the first resource.

In the second aspect, the first edge super nodes are provided, including:

The first receiving module is configured to receive a first query request forwarded by the first supernode, wherein the first query request includes a first resource ID that the first node requests to query;

A query module, configured to query the local information of the first edge super node according to the first resource ID, wherein the local information of the first edge super node includes resource IDs that can be obtained by the first edge super node, And the node ID and IP address corresponding to each resource ID;

A first sending module, configured to forward the first query request to a second edge super node if the query module determines that the local information of the first edge super node does not contain the first resource ID, to causing the second edge supernode to search for the first resource in the network domain where the second edge supernode is located, wherein the first edge supernode and the second edge supernode communicate through IPV4/IPV6 Gateway connection, the first edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the first edge super node is in the IPV6 network domain, and the second edge super node is in the IPV4 network domain network domain;

The second receiving module is configured to receive the first query response message sent by the second edge super node, wherein the first query response message includes a destination address, a source address, and a Payload, and the destination address is The address of the first node, the source address is the address of the second node storing the first resource, and after the source address is translated by the IPV4/IPV6 interworking gateway, it is the same as the first edge super node The network domain types are the same, and the Payload includes the second node ID, the file key of the first resource, and the actual IP address of the first resource;

A parsing module, configured to parse the first query response message, if it is determined that the type of the actual IP address in the Payload is different from the IP address type of the network domain where the first edge super node is located, then replacing the actual IP address in the Payload with the source address in the first query response message;

a second sending module, configured to forward the first query response message to the first node, so that the first node establishes a P2P connection with the second node according to the first query response message, And share the first resource.

In a third aspect, a system is provided, including: a first edge super node, a second edge super node, the first edge super node and the second edge super node are connected through an IPV4/IPV6 interworking gateway, and the first The edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the first edge super node is in the IPV6 network domain, and the second edge super node is in the IPV4 network domain;

Wherein, the first edge super node is used for,

receiving a first query request forwarded by the first supernode, wherein the first query request includes a first resource ID that the first node requests to query;

Query the local information of the first edge super node according to the first resource ID, wherein the local information of the first edge super node includes the resource ID that the first edge super node can obtain, and each resource ID Corresponding node ID and IP address;

If it is determined that the local information of the first edge super node does not contain the first resource ID, the first query request is forwarded to the second edge super node, so that the second edge super node is in the Searching for the first resource in the network domain where the second edge super node is located;

receiving a first query response message sent by the second edge super node, wherein the first query response message includes a destination address, a source address, and a Payload, and the destination address is the address of the first node , the source address is the address of the second node storing the first resource, and after the source address is translated by the IPV4/IPV6 interworking gateway, it is the same type of network domain as the first edge super node, The Payload includes the second node ID, the file key of the first resource, and the actual IP address of the first resource;

Analyzing the first query response message, if it is determined that the type of the actual IP address in the Payload is different from the IP address type of the network domain where the first edge super node is located, then the Replace the actual IP address of the source address in the first query response message;

Forwarding the first query response message to the first node, so that the first node establishes a P2P connection with the second node according to the first query response message, and performs the first resource of sharing.

It can be seen from the above that the embodiments of the present invention provide a P2P resource sharing method, device and system, the first edge super node receives the first query request forwarded by the first super node, wherein the first query request includes the first node request The first resource ID of the query; the first edge supernode queries the local information of the first edge supernode according to the first resource ID, wherein the local information of the first edge supernode includes the first The resource IDs that can be obtained by the edge super node, and the node ID and IP address corresponding to each resource ID; if the first edge super node determines that the local information of the first edge super node does not contain the first resource ID , then forward the first query request to the second edge super node, so that the second edge super node searches for the first resource in the network domain where the second edge super node is located, wherein the The first edge super node and the second edge super node are connected through an IPV4/IPV6 interworking gateway, the first edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the second edge super node is in the IPV6 network domain; An edge super node is in the IPV6 network domain, and the second edge super node is in the IPV4 network domain; the first edge super node receives the first query response message sent by the second edge super node, wherein the first A query response message includes a destination address, a source address, and a Payload, the destination address is the address of the first node, the source address is the address of the second node storing the first resource, and the After the source address is translated by the IPV4/IPV6 interworking gateway, it is the same as the network domain type of the first edge super node, and the Payload includes the second node ID, the file key of the first resource, and The actual IP address of the first resource; the first edge supernode parses the first query response message, and if it is determined that the type of the actual IP address in the Payload is the same as that of the first edge supernode The IP address types of the network domains where they are located are different, then replace the actual IP address in the Payload with the source address in the first query response message; The query response message is forwarded to the first node, so that the first node establishes a P2P connection with the second node according to the first query response message, and shares the first resource. In this way, through the introduction of edge super nodes, P2P resource sharing under the mixed network of IPv6 and IPv4 is realized. The invention overcomes the defect of P2P resource sharing failure caused by the non-one-to-one mapping of IPv6 and IPv4 address translation or dynamic mapping under the mixed networking of IPv6 and IPv4 in the prior art.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 provides a kind of system diagram of IPv6 and IPv4 hybrid networking for the embodiment of the present invention;

FIG. 2 is a flowchart of a P2P resource sharing method provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a device for a first edge super node provided by an embodiment of the present invention;

Fig. 4 is a schematic structural diagram of another first edge super node device provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to facilitate the understanding of the embodiments of the present invention, several terms that will be introduced in the description of the embodiments of the present invention are first introduced here;

Resource (Piece): It is a file resource, which is stored in each common node in the form of a piece of Piece.

Resource ID: It is the identifier of the resource.

Node ID: It is a node identifier, a globally unique identifier owned by each node.

Ordinary node: ordinary P2P node, which can be used to store resources and issue resource query requests, and can save information such as resource blocks and adjacent nodes (including resource block identifiers contained in adjacent nodes). Each network domain has multiple ordinary nodes. node.

Super node: maintain downstream ordinary node information for resource retrieval, no file storage, each network domain can have multiple super nodes.

Edge super node: a new type of node introduced under the existing IPv4 and IPv6 network architecture in the embodiment of the present invention. Each network domain can contain one edge super node or multiple edge super nodes. Specifically, it can be based on the actual situation of the network domain The edge super nodes are only deployed on the edge of the network domain, and do not store file resources. The edge super nodes can run multiple types of protocols at the same time, for example, they can run IPv6 and IPv4 protocols at the same time. The edge super node is directly connected to at least one super node, and the super node extends the address information of the edge super node to other super nodes.

The IPv4/IPv6 intercommunication gateway is used to connect the edge super nodes in the IPv4 network domain and the IPv6 network domain, maintain the corresponding relationship between the IPv4 network domain and the IPv6 network domain address, and can transfer the IP addresses between the IPv4 network domain and the IPv6 network domain translate.

Edge super node controller: logically connected to all edge super nodes in a wide area, able to register and manage edge super nodes, and enhance network manageability. When the network scale is large, there are many network outlets, and edge super nodes fail And when a new edge super node is enabled, the edge super node controller provides functions such as addressing between edge super nodes and new edge super node registration and notification, and does not store file resources.

It should be understood that the embodiments of the present invention may be applied to P2P resource sharing in various hybrid networks, and the embodiments of the present invention are not limited thereto.

It is only exemplary, and the method in the embodiment of the present invention is described as being applied to P2P resource sharing in a mixed networking scenario of IPv6 and IPv4, but this does not constitute any limitation to the embodiment of the present invention. Referring to FIG. 1 , it is a system diagram of a hybrid network of IPv6 and IPv4 set in the embodiment of the present invention, the system includes an IPV4 network domain and an IPV6 network domain, wherein the IPV4 network domain includes nodes 20, supernodes 40, 50 , the edge super node 30, the IPV4 network domain includes the node 80, the super node 70, the edge super node 60, the edge super node 30 and the edge super node 60 are connected through the IPv4/IPv6 interworking gateway 90.

On the one hand, the embodiment of the present invention provides a P2P resource sharing method. It should be noted that, referring to FIG. The first edge super node, the node 80 is the second node, the super node 70 is the second super node, and the edge super node 60 is the second edge super node.

Referring to Figure 2, the following steps may be included:

201: The first edge super node receives a first query request forwarded by the first super node, wherein the first query request includes a first resource ID that the first node requests to query;

Wherein, when the first node registers and logs into the P2P network for the first time, it generates and registers a unique ID of the first node in the entire domain. When the first node is a new node, at least one node in the P2P network is known, and the first node can obtain the specific location information of the node from the P2P application. After the first node joins the network, it may notify other nodes associated with the first node (for example, node 50 in FIG. 1 ) to update the lookup tables of other nodes.

Wherein, the first edge super node can be manually configured initially, and connected to IPv4 and IPv6 domains to perform Distributed Hash Table (DHT hash table calculation for short).

Assuming that the first node needs to share the first resource from other nodes, the first node sends a first query request to a node adjacent to the first node, and the query request includes the first resource ID;

The adjacent nodes of the first node query the local information of the adjacent node, and the local information of the adjacent node may include the resource ID information of the resource stored by the adjacent node, and the resource ID and the resource ID of the resource that the adjacent node can obtain. For the corresponding address information, if the adjacent node determines that the local information contains the location information cache of the first resource, such as the node (Node Identifier, NID for short), the IP address of the first resource, then the data source of the location information of the first resource is returned ; If the local information of the neighboring node does not have the location information of the first resource, then the neighboring node may forward the query request to the first super node.

When the first super node receives the first query request, it can first view the local information of the first super node. The local information of the first super node can include the resource ID recorded by the first super node, and the corresponding Node ID and IP address; for example, the local information of the first super node can exist in the form of a routing table, if the local information of the first super node contains the first resource ID and the address information corresponding to the first resource (including the first The node ID and IP address corresponding to the resource), the first super node can return the address information of the first resource to the first node, if the local information of the first super node does not include the first resource ID and the corresponding IP address of the first resource Address information, the first super node can forward the first query request to other super nodes for query, if all super nodes cannot find the location information of the first resource, forward the first query request to the first edge super node .

202: The first edge supernode queries the local information of the first edge supernode according to the first resource ID, wherein the local information of the first edge supernode includes resource ID, and the node ID and IP address corresponding to each resource ID;

When the first edge super node receives the first query request, it can preferentially check the local information of the first edge super node. The local information of the first edge super node can include the resource ID recorded by the first edge super node, and each The node ID and IP address corresponding to the resource ID; for example, the local information of the first edge super node can exist in the form of a routing table, if the local information of the first edge super node contains the first resource ID and the address corresponding to the first resource information (including the node ID and IP address corresponding to the first resource), the first edge supernode can transmit the address information of the first resource to the first node step by step.

203: If the first edge super node determines that the local information of the first edge super node does not contain the first resource ID, forward the first query request to a second edge super node, so that all The second edge super node searches for the first resource in the network domain where the second edge super node is located, wherein the first edge super node and the second edge super node are connected through an IPV4/IPV6 interworking gateway , the first edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the first edge super node is in the IPV6 network domain, and the second edge super node is in the IPV4 network domain ;

If the local information of the first edge super node does not contain the first resource ID and the address information corresponding to the first resource, and if there are other edge super nodes in the current network domain, the first edge super node can forward the first query request to When other edge super nodes perform queries, if none of the edge super nodes can find the location information of the first resource, the first edge super node forwards the first query request to the second edge super nodes in other network domains.

When the second edge super node in the IPV6 network domain receives the first query request sent by the first edge super node in the IPV6 network domain, it can search in its own storage and the super nodes in the domain until it finds or completes the entire network search. If found, the second edge super node sends the first query response message to the first edge super node. If not found, if there are other edge supernodes, the first query request is forwarded to other edge supernodes. If the location information of the first resource is not found until the entire network is queried, it will return that the first resource does not exist.

204. The first edge super node receives a first query response message sent by the second edge super node, wherein the first query response message includes a destination address, a source address, and a Payload, and the destination The address is the address of the first node, the source address is the address of the second node storing the first resource, and the source address is translated by the IPV4/IPV6 interworking gateway, and the first edge The network domain type where the super node is located is the same, and the Payload includes the second node ID, the file key of the first resource, and the actual IP address of the first resource;

Among them, the IPV4/IPV6 interworking gateway can maintain the corresponding relationship between IPV4 and IPV6. When the first query response message passes through the IPV4/IPV6 interworking gateway, the IPV4/IPV6 interworking gateway can translate the source address therein, so that after translation The source address of is the same as the network domain type where the first edge super node is located. For example, in this embodiment, the IP address of the second node storing the first resource is an IPV6 address, and the second edge super node adds the IP address of the second node in the form of IPV6 as the source address to the first query response message, and the IPV4 The /IPV6 interworking gateway translates the IP address of the second node in the form of IPV6 into the IP address of the second node in the form of IPV4, and adds the translated IP address of the second node in the form of IPV4 as a source address to the first query response message.

205. The first edge supernode parses the first query response message, and if it is determined that the type of the actual IP address in the Payload is the same as the IP address of the network domain where the first edge supernode is located different types, then replace the actual IP address in the Payload with the source address in the first query response message;

For example, after the first edge super node parses the first query response message, it obtains the destination address, source address, and Payload in the first query response message, and the destination address is the The source address is the address of the second node after being translated by the IPV4/IPV6 interworking gateway. After parsing, the first edge super node obtains the second node ID contained in the Payload, the file key of the first resource, and the first The actual IP address of the resource; in order to enable the first node to identify the IP address of the first resource, the first edge super node resolves to obtain the actual IP address of the first resource, and judges the actual IP address and the IP address type of the current network domain Whether it is the same, if it is different, it means that the first node cannot recognize the actual IP address, because the source address is the second node address translated by the IPV4/IPV6 interworking gateway, which can be recognized by the first node, so the first edge super node Replace the source address with the actual IP address.

206. The first edge super node forwards the first query response message to the first node, so that the first node establishes a P2P with the second node according to the first query response message connect, and share the first resource.

After the first node obtains the first query response message, according to the second node ID in the Payload in the first query response message, the file key of the first resource, and the IP address (translated) of the first resource can be Establish a P2P connection with the second node, and share the first resource of the second node after the P2P connection is established, so, after the translation of the IP address by the IPV4/IPV6 interworking gateway, and the first edge super node’s analysis of the Payload The judgment and replacement of the IP address makes the IP address received by the first node recognizable and ensures the successful establishment of P2P.

Further, in order to improve query efficiency and ensure the effectiveness of address translation, the method further includes:

The first edge supernode stores the first resource ID and the actual IP address of the first resource in file address information, wherein the file address information includes the information obtained by the first edge supernode each query Resource ID and the actual IP address corresponding to the resource ID.

By storing the file address information of each query, the first edge super node can quickly obtain the real IP address of the resource when a resource is queried before, because the IPV4/IPV6 interworking gateway maintains the IPV4 The address mapping between IPV6 and IPV6 may be a dynamic correspondence. Therefore, the real IP address of the resource may correspond to different translated IP addresses at different times. Therefore, the first edge super node cannot directly return to the requesting node. The translation IP address of the query, but the real IP address corresponding to the resource remains unchanged, so the first edge super node can request the translation IP address of the IPV4/IPV6 interworking gateway at the current moment according to the real IP address of the resource, specifically through the following The above process is reflected.

The first edge super node receives the second query request forwarded by the first super node, wherein the second query request includes the second resource ID requested by the third node, and the third node is the first edge Any node in the network domain where the super node is located.

The first edge supernode queries the file address information according to the second resource ID, and if it is determined that the file address information contains the second resource ID, then sends the second resource to the IPV4/IPV6 interworking gateway The actual IP address corresponding to the ID, so that the IPV4/IPV6 interworking gateway provides a translation address for the actual IP address of the second resource ID.

Wherein, if the IPV4/IPV6 interworking gateway currently has a translated IP address corresponding to the actual IP address of the second resource ID, the translated IP address can be directly returned to the first edge super node; if the current IPV4/IPV6 interworking gateway does not exist The translation IP address of the actual IP address corresponding to the second resource ID, the IPV4/IPV6 interworking gateway can immediately assign the translation IP address to the actual IP address corresponding to the second resource ID.

The first edge super node receives the translation address of the actual IP address of the second resource sent by the IPV4/IPV6 interworking gateway;

The first edge super node forwards the second query response message to the third node, so that the third node establishes a P2P connection with the node where the second resource ID is located according to the second query response message, and sharing the second resource, wherein the second query response message includes a destination address, a source address, and a Payload, the destination address is the address of the third node, and the source address is the The translation address of the actual IP address of the second resource, the Payload includes the node ID where the second resource is located, the file key of the second resource, and the translation address of the actual IP address of the second resource.

It can be seen from the above that the embodiment of the present invention provides a P2P resource sharing method. The first edge super node receives the first query request forwarded by the first super node, wherein the first query request includes the first query requested by the first node. Resource ID; the first edge supernode queries the local information of the first edge supernode according to the first resource ID, wherein the local information of the first edge supernode includes the ability of the first edge supernode The obtained resource ID, and the node ID and IP address corresponding to each resource ID; if the first edge super node determines that the local information of the first edge super node does not contain the first resource ID, then the The first query request is forwarded to the second edge super node, so that the second edge super node searches for the first resource in the network domain where the second edge super node is located, wherein the first edge super node The node and the second edge super node are connected through an IPV4/IPV6 interworking gateway, the first edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the first edge super node In the IPV6 network domain, the second edge super node is in the IPV4 network domain; the first edge super node receives the first query response message sent by the second edge super node, wherein the first query response message The text includes destination address, source address, and Payload, the destination address is the address of the first node, the source address is the address of the second node storing the first resource, and the source address passes through the After the IPV4/IPV6 interworking gateway is translated, it is of the same network domain type as the first edge super node, and the Payload includes the second node ID, the file key of the first resource, and the first The actual IP address of the resource; the first edge supernode parses the first query response message, and if it is determined that the type of the actual IP address in the Payload is the same as the network where the first edge supernode is located If the IP address types of the domains are different, replace the actual IP address in the Payload with the source address in the first query response message; the first edge super node will replace the first query response message Forwarding to the first node, so that the first node establishes a P2P connection with the second node according to the first query response message, and performs sharing of the first resource. In this way, through the introduction of edge super nodes, P2P resource sharing under the mixed network of IPv6 and IPv4 is realized. It overcomes the defect that the IPv6 and IPv4 mixed networking in the prior art may easily cause the non-one-to-one mapping relationship between IPv6 and IPv4 address translation or the failure of P2P resource sharing caused by dynamic mapping.

On the one hand, the embodiment of the present invention provides a first edge super node 30, see FIG. 3, including:

The first receiving module 301 is configured to receive a first query request forwarded by the first supernode, wherein the first query request includes a first resource ID that the first node requests to query;

A query module 302, configured to query the local information of the first edge super node according to the first resource ID, wherein the local information of the first edge super node includes resource IDs that can be obtained by the first edge super node , and the node ID and IP address corresponding to each resource ID;

The first sending module 303 is configured to forward the first query request to a second edge super node if the query module determines that the local information of the first edge super node does not contain the first resource ID, so that the second edge super node searches for the first resource in the network domain where the second edge super node is located, wherein the first edge super node and the second edge super node pass IPV4/IPV6 Interworking gateway connection, the first edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the first edge super node is in the IPV6 network domain, and the second edge super node is in the IPV4 network domain;

The second receiving module 304 is configured to receive the first query response message sent by the second edge super node, wherein the first query response message includes a destination address, a source address, and a Payload, and the destination address is the address of the first node, the source address is the address of the second node storing the first resource, and the source address is translated by the IPV4/IPV6 interworking gateway and is identical to the first edge super The network domain types where the nodes are located are the same, and the Payload includes the second node ID, the file key of the first resource, and the actual IP address of the first resource;

The parsing module 305 is configured to parse the first query response message, if it is determined that the type of the actual IP address in the Payload is different from the IP address type of the network domain where the first edge super node is located, Then replace the actual IP address in the Payload with the source address in the first query response message;

A second sending module 306, configured to forward the first query response message to the first node, so that the first node establishes a P2P connection with the second node according to the first query response message , and share the first resource.

Further, referring to FIG. 4, the first edge super node 30 also includes:

A storage module 307, configured to store the first resource ID and the actual IP address of the first resource in file address information, wherein the file address information includes the resources obtained by the first edge super node each query ID and the actual IP address corresponding to the resource ID.

further,

The first receiving module 301 is further configured to receive a second query request forwarded by the first super node, wherein the second query request includes a second resource ID that a third node requests to query, and the third node is the Any node in the network domain where the first edge super node is located;

The query module 302 is further configured to query the file address information according to the second resource ID;

The first sending module 303 is further configured to, if the query module determines that the file address information includes the second resource ID, send the actual resource ID corresponding to the second resource ID to the IPV4/IPV6 interworking gateway. IP address, so that the IPV4/IPV6 interworking gateway provides a translation address for the actual IP address of the second resource ID;

The second receiving module 304 is further configured to receive the translation address of the actual IP address of the second resource sent by the IPV4/IPV6 interworking gateway;

The second sending module 306 is further configured to forward the second query response message to the third node, so that the third node according to the second query response message and the second resource ID The node establishes a P2P connection, and performs the sharing of the second resource, wherein, the second query response message includes a destination address, a source address, and a Payload, and the destination address is the address of the third node, The source address is the translation address of the actual IP address of the second resource, and the Payload includes the node ID where the second resource is located, the file key of the second resource, and the actual IP address of the second resource. The translated address of the IP address.

It can be seen from the above that the embodiment of the present invention provides a first edge super node, which receives the first query request forwarded by the first super node, wherein the first query request includes the first resource ID requested by the first node; The first edge super node queries the local information of the first edge super node according to the first resource ID, wherein the local information of the first edge super node includes resource IDs that can be obtained by the first edge super node , and the node ID and IP address corresponding to each resource ID; if the first edge supernode determines that the local information of the first edge supernode does not contain the first resource ID, then the first query forwarding the request to a second edge super node, so that the second edge super node searches for the first resource in the network domain where the second edge super node is located, wherein the first edge super node and the The second edge super node is connected through the IPV4/IPV6 interworking gateway, the first edge super node is in the IPV4 network domain, and the second edge super node is in the IPV6 network domain; or, the first edge super node is in the IPV6 network domain , the second edge super node is in the IPV4 network domain; the first edge super node receives the first query response message sent by the second edge super node, wherein the first query response message contains the purpose Address, source address, and Payload, the destination address is the address of the first node, the source address is the address of the second node storing the first resource, and the source address passes through the IPV4/IPV6 After translation by the interworking gateway, it is the same as the network domain type of the first edge super node, and the Payload includes the second node ID, the file key of the first resource, and the actual IP of the first resource address: the first edge super node parses the first query response message, if it is determined that the type of the actual IP address in the Payload is the IP address of the network domain where the first edge super node is located different types, replace the actual IP address in the Payload with the source address in the first query response message; the first edge super node forwards the first query response message to the The first node, so that the first node establishes a P2P connection with the second node according to the first query response message, and performs sharing of the first resource. In this way, by introducing edge super nodes, P2P resource sharing under IPv6 and IPv4 hybrid networking is realized. It overcomes the defect that the IPv6 and IPv4 mixed networking in the prior art may easily cause the non-one-to-one mapping relationship between IPv6 and IPv4 address translation or the failure of P2P resource sharing caused by dynamic mapping.

On the one hand, an embodiment of the present invention provides a system, referring to FIG. 1 , the system includes: a first edge super node 30, a second edge super node 60, the first edge super node 30 and the second edge super node 60 is connected through the IPV4/IPV6 interworking gateway 90,

It should be noted that the first edge super node 30 is in the IPV4 network domain, and the second edge super node 60 is in the IPV6 network domain; or, the first edge super node 30 is in the IPV6 network domain, and the second edge super node 60 is in the IPV6 network domain. The super node 60 is in the IPV4 network domain; this is not limited in the embodiment of the present invention, and FIG. 1 is only an exemplary illustration of a situation.

Wherein, the first edge super node 30 is used for,

receiving a first query request forwarded by the first super node 40, wherein the first query request includes a first resource ID that the first node 20 requests to query;

Query the local information of the first edge supernode 30 according to the first resource ID, wherein the local information of the first edge supernode 30 includes the resource ID that the first edge supernode can obtain, and each resource The node ID and IP address corresponding to the ID;

If it is determined that the local information of the first edge super node 30 does not contain the first resource ID, the first query request is forwarded to the second edge super node 60, so that the second edge super node 60 searching for the first resource in the network domain where the second edge super node 60 is located;

Receiving a first query response message sent by the second edge super node 60, wherein the first query response message includes a destination address, a source address, and a Payload, and the destination address is the address of the first node. address, the source address is the address of the second node 80 storing the first resource, and the source address is translated from the network domain where the first edge super node 30 is located after being translated by the IPV4/IPV6 interworking gateway The types are the same, and the Payload includes the second node ID, the file key of the first resource, and the actual IP address of the first resource;

Analyzing the first query response message, if it is determined that the type of the actual IP address in the Payload is different from the IP address type of the network domain where the first edge super node 30 is located, then the Payload The actual IP address in is replaced with the source address in the first query response message;

forwarding the first query response message to the first node 20, so that the first node 20 establishes a P2P connection with the second node 80 according to the first query response message, and performs the Sharing of the first resource.

Further, the first edge super node 30 is further configured to: store the first resource ID and the actual IP address of the first resource in file address information, wherein the file address information includes the first The resource ID and the actual IP address corresponding to the resource ID obtained by the edge super node each query.

Further, the first edge super node 30 is also used for:

Receive the second query request forwarded by the first super node 40, wherein the second query request includes a second resource ID requested by a third node, and the third node is the network where the first edge super node is located any node in the domain;

Querying the file address information according to the second resource ID;

If it is determined that the file address information includes the second resource ID, send the actual IP address corresponding to the second resource ID to the IPV4/IPV6 interworking gateway, so that the IPV4/IPV6 interworking gateway is the The actual IP address of the second resource ID provides the translated address;

receiving the translation address of the actual IP address of the second resource sent by the IPV4/IPV6 interworking gateway;

Forwarding the second query response message to the third node, so that the third node establishes a P2P connection with the node where the second resource ID is located according to the second query response message, and performs the second query response message. Sharing of two resources, wherein, the second query response message includes a destination address, a source address, and a Payload, the destination address is the address of the third node, and the source address is the address of the second resource The translation address of the actual IP address, the Payload includes the node ID where the second resource is located, the file key of the second resource, and the translation address of the actual IP address of the second resource.

Further, the system further includes: an edge super node controller, which is logically connected to the edge super nodes in the system, and is used to register and manage new edge super nodes, and provides the Addressing between edge super nodes managed by the edge super node controller and delivery of notifications.

It can be seen from the above that the system provided by the embodiment of the present invention implements P2P resource sharing under the mixed networking of IPv6 and IPv4 by introducing edge super nodes. It overcomes the defect that the IPv6 and IPv4 mixed networking in the prior art may easily cause the non-one-to-one mapping relationship between IPv6 and IPv4 address translation or the failure of P2P resource sharing caused by dynamic mapping.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. the method for a P2P resource-sharing, it is characterised in that the method includes:

First edge super node receive first super node forward the first inquiry request, wherein, Described first inquiry request comprises the first resource ID of primary nodal point requesting query；

Described first edge super node is inquired about described first edge according to described first resource ID and is surpassed The local information of level node, wherein, the local information of described first edge super node comprises institute State the resource ID that the first edge super node can obtain, and the node that each resource ID is corresponding ID and IP address；

If described first edge super node determines the local information of described first edge super node In do not comprise described first resource ID, then described first inquiry request is forwarded to the second edge and surpasses Level node, so that described second edge super node is at described second super node place, edge Network domains in search described first resource, wherein, described first edge super node and described Second edge super node is connected by IPV4/IPV6 Interworking gateway, and described first edge is super Node is in IPV4 network domains, and described second edge super node is in IPV6 network domains；Or Person, described first edge super node is in IPV6 network domains, described second edge super node It is in IPV4 network domains；

The first of the described second edge super node transmission of described first edge super node reception is looked into Ask response message, wherein, described first inquiry response message comprises destination address, source address, And Payload, described destination address is the address of described primary nodal point, and described source address is for depositing Store up the address of the secondary nodal point of described first resource, and described source address is through described IPV4/IPV6 Interworking gateway translation after, with described first edge super node residing for network domains type identical, institute State and Payload comprises described secondary nodal point ID, the file key, Yi Jisuo of described first resource State the real ip address of first resource；

Described first inquiry response message is resolved, if really by described first edge super node The type of real ip address described in fixed described Payload and described first edge super node institute The IP address class type of the network domains at place is different, then by the described practical IP ground in described Payload Location replaces to the source address in described first inquiry response message；

Described first inquiry response message is forwarded to described first by described first edge super node Node, so that described primary nodal point is according to described first inquiry response message and described second section Point is set up P2P and is connected, and carries out sharing of described first resource.

Method the most according to claim 1, it is characterised in that described method also includes:

Described first edge super node is by the reality of described first resource ID Yu described first resource IP address stores to file address information, and wherein, described file address information comprises described first Edge super node inquires about the resource ID of gained and the reality corresponding with described resource ID every time IP address.

Method the most according to claim 2, it is characterised in that described method also includes:

Described first edge super node receives the second inquiry of described first super node forwarding please Asking, wherein, described second inquiry request comprises the Secondary resource ID of the 3rd node requesting query, Described 3rd node is any one node in described first super node place, edge network domains；

Described first edge super node inquires about described file address letter according to described Secondary resource ID Breath, however, it is determined that comprise described Secondary resource ID in the information of described file address, then to described IPV4/IPV6 Interworking gateway sends described real ip address corresponding for Secondary resource ID, so that The real ip address that described IPV4/IPV6 Interworking gateway is described Secondary resource ID provides translation ground Location；

Described first edge super node receives the described of described IPV4/IPV6 Interworking gateway transmission The translating address of the real ip address of Secondary resource；

Second inquiry response message is forwarded to described Section three by described first edge super node Point, so that described 3rd node is according to described second inquiry response message and described Secondary resource The node at ID place is set up P2P and is connected, and carries out sharing of described Secondary resource, wherein, institute State and the second inquiry response message comprises destination address, source address, and Payload, described mesh Address be described 3rd address of node, described source address is the practical IP of described Secondary resource The translating address of address, comprises the node ID at described Secondary resource place in described Payload, The file key of described Secondary resource, and the translation ground of the real ip address of described Secondary resource Location.

4. an edge super node, it is characterised in that including:

First receiver module, for receiving the first inquiry request that the first super node forwards, its In, described first inquiry request comprises the first resource ID of primary nodal point requesting query；

Enquiry module, for inquiring about described first edge super node according to described first resource ID Local information, wherein, the local information of described first edge super node comprises described first The resource ID that edge super node can obtain, and node ID corresponding to each resource ID and IP address；

First sending module, if determining described first edge super node for described enquiry module Local information in do not comprise described first resource ID, then described first inquiry request is forwarded to Second edge super node, so that described second edge super node is super at described second edge Searching described first resource in the network domains at level node place, wherein, described first edge is super Node and described second edge super node are connected by IPV4/IPV6 Interworking gateway, and described One edge super node is in IPV4 network domains, and described second edge super node is in IPV6 Network domains；Or, described first edge super node is in IPV6 network domains, described second limit Edge super node is in IPV4 network domains；

Second receiver module, for receiving the first inquiry that described second edge super node sends Response message, wherein, comprises destination address in described first inquiry response message, source address, And Payload, described destination address is the address of described primary nodal point, and described source address is for depositing Store up the address of the secondary nodal point of described first resource, and described source address is through described IPV4/IPV6 Interworking gateway translation after, with described first edge super node residing for network domains type identical, institute State and Payload comprises described secondary nodal point ID, the file key, Yi Jisuo of described first resource State the real ip address of first resource；

Parsing module, for resolving described first inquiry response message, however, it is determined that described The type of real ip address described in Payload and the net residing for described first edge super node The IP address class type in network territory is different, then replaced by the described real ip address in described Payload Become the source address in described first inquiry response message；

Second sending module, for being forwarded to described first segment by described first inquiry response message Point, so that described primary nodal point is according to described first inquiry response message and described secondary nodal point Set up P2P to connect, and carry out sharing of described first resource.

First edge super node the most according to claim 4, it is characterised in that described First edge super node also includes: memory module, is used for described first resource ID with described The real ip address of first resource stores to file address information, and wherein, described file address is believed Breath comprise described first edge super node inquire about every time gained resource ID and with described resource The real ip address that ID is corresponding.

First edge super node the most according to claim 5, it is characterised in that

First receiver module is additionally operable to, and the second inquiry receiving described first super node forwarding please Asking, wherein, described second inquiry request comprises the Secondary resource ID of the 3rd node requesting query, Described 3rd node is any one node in described first super node place, edge network domains；

Described enquiry module is additionally operable to, and inquires about described file address letter according to described Secondary resource ID Breath；

Described first sending module is additionally operable to, if described enquiry module determines that described file address is believed Breath comprises described Secondary resource ID, then sends described the to described IPV4/IPV6 Interworking gateway The real ip address that two resource IDs are corresponding, so that described IPV4/IPV6 Interworking gateway is described The real ip address of Secondary resource ID provides translating address；

Described second receiver module is additionally operable to, and receives what described IPV4/IPV6 Interworking gateway sent The translating address of the real ip address of described Secondary resource；

Described second sending module is additionally operable to, and the second inquiry response message is forwarded to the described 3rd Node, so that described 3rd node is according to described second inquiry response message and described second money The node at ID place, source is set up P2P and is connected, and carries out sharing of described Secondary resource, wherein, Described second inquiry response message comprises destination address, source address, and Payload, described Destination address is described 3rd address of node, and described source address is the reality of described Secondary resource The translating address of IP address, comprises the node ID at described Secondary resource place in described Payload, The file key of described Secondary resource, and the translation ground of the real ip address of described Secondary resource Location.

7. the system of an IPv6 and IPv4 mixed networking, it is characterised in that including: first Edge super node, the second edge super node, described first edge super node and described Two edge super nodes are connected by IPV4/IPV6 Interworking gateway, the described first super joint in edge Point is in IPV4 network domains, and described second edge super node is in IPV6 network domains；Or, Described first edge super node is in IPV6 network domains, and described second edge super node is in IPV4 network domains；

Wherein, described first edge super node is used for,

Receiving the first inquiry request that the first super node forwards, wherein, described first inquiry please Seek the first resource ID comprising primary nodal point requesting query；

The local information of described first edge super node is inquired about according to described first resource ID, its In, the local information of described first edge super node comprises described first edge super node energy Enough resource IDs obtained, and node ID corresponding to each resource ID and IP address；

If it is determined that the local information of described first edge super node does not comprise described first resource ID, then be forwarded to the second edge super node by described first inquiry request, so that described Two edge super nodes search described in the network domains at described second super node place, edge One resource；

Receive the first inquiry response message that described second edge super node sends, wherein, institute State and the first inquiry response message comprises destination address, source address, and Payload, described mesh The address that address is described primary nodal point, described source address is store described first resource the Two addresss of node, and described source address is after described IPV4/IPV6 Interworking gateway is translated, With described first edge super node residing for network domains type identical, described Payload comprises institute State secondary nodal point ID, the file key of described first resource, and the reality of described first resource IP address；

Described first inquiry response message is resolved, however, it is determined that real described in described Payload The type of IP address, border and the IP address class type of the network domains residing for described first edge super node Difference, then replace to the described real ip address in described Payload described first inquiry and ring Answer the source address in message；

Described first inquiry response message is forwarded to described primary nodal point, so that described first Node is set up P2P according to described first inquiry response message with described secondary nodal point and is connected, and goes forward side by side Sharing of the described first resource of row.

The system of IPv6 and IPv4 mixed networking the most according to claim 7, its feature Being, described first edge super node is additionally operable to: by described first resource ID and described first The real ip address of resource stores to file address information, wherein, and described file address information bag Containing described first edge super node inquire about every time gained resource ID and with described resource ID Corresponding real ip address.

The system of IPv6 and IPv4 mixed networking the most according to claim 8, its feature Being, described first edge super node is additionally operable to:

Receiving the second inquiry request that described first super node forwards, wherein, described second looks into The request of inquiry comprises the Secondary resource ID of the 3rd node requesting query, and described 3rd node is described the Any one node in one super node place, edge network domains；

Described file address information is inquired about according to described Secondary resource ID；

If it is determined that described file address information comprises described Secondary resource ID, then to described IPV4/IPV6 Interworking gateway sends described real ip address corresponding for Secondary resource ID, so that The real ip address that described IPV4/IPV6 Interworking gateway is described Secondary resource ID provides translation ground Location；

Receive the real ip address of the described Secondary resource that described IPV4/IPV6 Interworking gateway sends Translating address；

Second inquiry response message is forwarded to described 3rd node, so that described 3rd node Node according to described second inquiry response message Yu described Secondary resource ID place sets up P2P even Connect, and carry out sharing of described Secondary resource, wherein, described second inquiry response message wraps Containing destination address, source address, and Payload, described destination address is described 3rd node Address, described source address is the translating address of the real ip address of described Secondary resource, described Payload comprises the node ID at described Secondary resource place, the file key of described Secondary resource, And the translating address of the real ip address of described Secondary resource.

10. according to the system of IPv6 and the IPv4 mixed networking described in any one of claim 7-9, It is characterized in that, described system also includes: edge super node controller, described edge is super Node Controller is connected with the edge super node logic in described system, for new edge Super node is registered and is managed, it is provided that the limit that described edge super node controller is managed Issuing of addressing between edge super node and notice.