{
    "event":"ping"
}

{
    "event":"pong",
    "ts":1614667590000
}
The server will send a ping command to the client every 10 seconds. If the pong from client is not received within 10 seconds for 10 consecutive times, it will actively disconnect the client. The client can also send ping every 10s to keep alive.
NameTypeRequiredDescription
eventstringYping/pong
{
    "event":"ping"
}

{
    "event":"pong",
    "ts":1614667590000
}