It is possible to perform real-time communication using a Web browser without installing dedicated software on the terminal. The real-time communication device converts input information input from the user transmitted from the user terminal 2 into a data format of the real-time communication server, and transmits the data to the real-time communication server. Each time the real-time communication device receives transmission information from the real-time communication server, the real-time communication device identifies information identifying the connection with the user terminal, the access token issued for the connection with the user terminal, and the connection with the real-time communication server. Based on the session information associated with the information to be transmitted, the user terminal of the transmission information is identified, the transmission information is converted into the data format of the web browser of the user terminal, and sequentially transmitted to the identified user terminal .
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