Scheduling method, server, first peer node and computer-readable storage medium

A scheduling method, applied to a first Peer to Peer (P2P) node, the method comprising:

• sending a first request to a server to enable the server to determine at least one P2P node capable of providing service to the first P2P node based on a service content for each network address supported by the first P2P node, and to enable the server to select the P2P node of which a transmission distance with the first P2P node is shortest from the determined at least one P2P node as a candidate P2P node corresponding to said each network address, the first request comprising the service content and the first request being configured to request the server for an information list indicating candidate P2P nodes capable of providing the service content;
• receiving the information list returned by the server, P2P node information in the information list representing a transmission distance between at least one candidate P2P node and the first P2P node, wherein the transmission distance is a cost index of data transmission between two network positions, and the cost index comprises:
• a transmission delay between the two network positions, a link bandwidth, a traffic charge, and a traffic engineering policy;
• selecting a second P2P node from the information list according to the information list, the second P2P node being capable of providing the service to the first P2P node;
• and
• acquiring the service content from the second P2P node for presentation, wherein
• the transmission distance between the at least one candidate P2P node and the first P2P node is represented by network addresses in different network layers, the network addresses are network addresses of the first P2P node in different network layer protocols and comprise:
• a public network address, a private network address under a Network Address Translation (NAT) device, layer-2 intranet addresses under different devices, and layer-3 intranet addresses under different devices;
• wherein a transmission distance between the first node and the at least one candidate P2P node in a layer of public network address is longer than a transmission distance between the first node and the at least one candidate P2P node in a layer of private network address under the NAT device, which is longer than a transmission distance between the first node and the at least one candidate P2P node in a layer of layer-2 intranet address, which is longer than a transmission distance between the first node and the at least one candidate P2P node in a layer of layer-3 intranet address;
• and position information of the first P2P node in different network layers is learned about according to different network addresses.

A server, comprising:

• a processor;
• and
• a memory for storing instructions executable by the processor,
• wherein the processor is configured to:
• receive a first request from a first Peer to Peer (P2P) node, the first request comprising a service content;
• determine at least one candidate P2P node for the first P2P node using position information of the first P2P node in different network layers and the service content, the at least one candidate P2P node being capable of providing service to the first P2P node and the position information being position information generated based on a network topology structure;
• generate a candidate P2P node information list using the at least one candidate P2P node, P2P node information in the information list representing a transmission distance between the at least one candidate P2P node and the first P2P node, wherein the transmission distance is a cost index of data transmission between two network positions, and the cost index comprises:
• a transmission delay between the two network positions, a link bandwidth, a traffic charge, and a traffic engineering policy;
• and
• return the information list to the first P2P node, wherein
• the position information of the first P2P node in different network layers is represented by network addresses in different network layers, the network addresses are network addresses of the first P2P node in different network layer protocols and comprise:
• a public network address, a private network address under a Network Address Translation (NAT) device, layer-2 intranet addresses under different devices, and layer-3 intranet addresses under different devices;
• wherein a transmission distance between the first node and the at least one candidate P2P node in a layer of public network address is longer than a transmission distance between the first node and the at least one candidate P2P node in a layer of private network address under the NAT device, which is longer than a transmission distance between the first node and the at least one candidate P2P node in a layer of layer-2 intranet address, which is longer than a transmission distance between the first node and the at least one candidate P2P node in a layer of layer-3 intranet address;
• and
• said determining the at least one candidate P2P node for the first P2P node using the position information of the first P2P node in different network layers and the service content comprises:
• for each network address supported by the first P2P node, determining at least one P2P node capable of providing the service to the first P2P node based on the service content, and
• selecting the P2P node of which a transmission distance with the first P2P node is shortest from the determined at least one P2P node as a candidate P2P node corresponding to said each network address.