Introduction - If you have any usage issues, please Google them yourself
1) similar to the QQ chat P2P systems, client and server side. 2) the server records the current online customer lists, customer lists to send to each online customer, and real-time refresh. 3) and either a client can interact with any other client, i.e., select one or a group of other clients in the online list of customers interact with each other through the server, including the exchange of information in the file interaction.