Network communication method based on software-defined networking and server using the method

A non-transitory storage medium, storing a set of instructions, to perform a method comprising:

• receiving an allocation request from a client by a master Traversal Using Relays around Network Address Translation (TURN) server;
• determining, by the master TURN server, whether the client is a very important person (VIP);
• selecting, by the master TURN server, one of a plurality of forwarding devices as the relay device via a Software-Defined Networking (SDN) controller if the client is the VIP;
• assigning, by the master TURN server, a second IP address and an access port to the client according to the allocation request;
• instructing, by the master TURN server, the SDN controller to define forwarding rules for the relay device;
• replying, by the master TURN server, a second error response to the client;
• and
• enabling, by the master TURN server, the client to deliver the allocation request to the relay device, the relay device to forward the allocation request to the SDN controller according to the forwarding rules, and the SDN controller to forward the allocation request to the shadow TURN server;
• sending the allocation request by the client;
• determining whether the client is the VIP by a shadow TURN server when the allocation request is received;
• assigning a first IP address to a relay device by the shadow TURN when the client is the VIP;
• the shadow TURN server instructing the SDN controller to set a transmission path for transmitting data streams and sending a notification to SDN devices on the transmission path;
• sending, by the shadow TURN server, an allocation success instruction to the SDN controller, wherein the allocation success instruction is forwarded to the client via the SDN controller and the relay device;
• and
• the client transferring the data streams via the relay device and the SDN devices along the transmission path.

A server, applied to an Software-Defined Networking (SDN) network communication system, comprising:

• at least one processor;
• a storage system;
• and
• one or more programs that are stored in the storage system and executed by the at least one processor, the one or more programs comprising instructions for:
• receiving an allocation request from a client by a master Traversal Using Relays around Network Address Translation (TURN) server;
• determining, by the master TURN server, whether the client is a very important person (VIP);
• selecting, by the master TURN server, one of a plurality of forwarding devices as the relay device via a SDN controller if the client is the VIP;
• assigning, by the master TURN server, a second IP address and an access port to the client according to the allocation request;
• instructing, by the master TURN server, the SDN controller to define forwarding rules for the relay device;
• replying, by the master TURN server, a second error response to the client;
• and
• enabling, by the master TURN server, the client to deliver the allocation request to the relay device, the relay device to forward the allocation request to the SDN controller according to the forwarding rules, and the SDN controller to forward the allocation request to the shadow TURN server;
• sending the allocation request by the client;
• determining whether the client is the VIP by a shadow TURN server when the allocation request is received;
• assigning a first IP address to a relay device by the shadow TURN when the client is the VIP;
• the shadow TURN server instructing the SDN controller to set a transmission path for transmitting data streams and sending a notification to SDN devices on the transmission path;
• sending, by the shadow TURN server, an allocation success instruction to the SDN controller, wherein the allocation success instruction is forwarded to the client via the SDN controller and the relay device;
• and
• the client transferring the data streams via the relay device and the SDN devices along the transmission path.