Server and terminal

A server, comprising:

• a processor;
• a network communication interface connected to a network;
• and
• a storage medium that stores a program, wherein
• when the processor executes the program, the processor is configured to:
• cause the network communication interface to transmit a video data related to a livestream from a terminal of a livestreamer of the livestream to a terminal of a viewer via the network;
• cause the network communication interface to receive, over the network and from the terminal of the livestreamer, a keep-alive signal that is generated at the terminal of the livestreamer at certain intervals during the livestream;
• increment a counter every unit period;
• and
• reset a counter value of the counter when the keep-alive signal is received from the terminal of the livestreamer by the network communication interface,
• wherein the processor is further configured to start a countdown timer when the counter value reaches a threshold, and to terminate the livestream when the countdown timer reaches a lower limit, terminate the livestream.

A method, including:

• transmitting a video data related to a livestream from a terminal of a livestreamer of the livestream to a terminal of a viewer;
• receiving, over a network and from the terminal of the livestreamer, a keep-alive signal that is generated at the terminal of the livestreamer at certain intervals during the livestream;
• setting a counter to increment every unit period;
• resetting a counter value of the counter when the keep-alive signal is received from the terminal of the livestreamer;
• and
• changing a status of the livestream from a first status to a second status when there is a failure to receive the keep-alive signal and changing the status of the livestream from the second status to the first status when the keep-alive signal is recovered.