Methods and devices for establishing communication between nodes in blockchain system

A computing device for establishing communication between a first node and a second node in a blockchain system, the computing device comprising:

• one or more processors;
• and
• one or more computer-readable memories coupled to the one or more processors and having instructions stored thereon that are executable by the one or more processors, wherein the one or more processors are configured to:
• provide a node identifier of the first node to the second node and receive a node identifier of the second node from the second node, to cause a first communication session to be established between the first node and the second node, the first node and the second node participating in the blockchain system to manage one or more blockchains;
• determine whether a second communication session exists between the first node and the second node;
• and
• in response to a determination that the second communication session exists between the first node and the second node, terminate one of the first communication session and the second communication session based on the node identifier of the first node and the node identifier of the second node, wherein in terminating one of the first communication session and the second communication session, the one or more processors are further configured to:
• determine a node of the first node and the second node that has one of:
• a greater node identifier or a smaller node identifier;
• determine a communication session of the first communication session and the second communication session that is established based on a connection request sent from the determined node;
• and
• select the determined communication session of the first communication session and the second communication session for termination.

A non-transitory computer-readable medium having stored therein instructions that, when executed by a processor of a computing device, cause the computing device to perform a method for establishing communication between a first node and a second node in a blockchain system, the method comprising:

• providing, by the first node, a node identifier of the first node to the second node and receiving, by the first node, a node identifier of the second node from the second node, to cause a first communication session to be established between the first node and the second node, the first node and the second node participating in the blockchain system to manage one or more blockchains;
• determining, by the first node, whether a second communication session exists between the first node and the second node;
• and
• in response to a determination that the second communication session exists between the first node and the second node, terminating, by the first node, one of the first communication session and the second communication session based on the node identifier of the first node and the node identifier of the second node, the terminating comprising:
• determining a node of the first node and the second node that has one of:
• a greater node identifier or a smaller node identifier;
• determining a communication session of the first communication session and the second communication session that is established based on a connection request sent from the determined node;
• and
• selecting the determined communication session of the first communication session and the second communication session for termination.