Disable IdleTimeout or create system PING\PONG

[Koldunz]

I use v15.9.0

Tell me how to disable automatic connection disconnection( disable idleTimeout ) or how to send system ping \ pong from server to clients using OpCode 0x9 [PING] and 0xA [PONG]

If the opportunity to implement events ping\pong?
uWS.App().ws('/*', { ping: (ws) => { console.log("PING") }, drain: (ws) => { console.log("PONG") }

Thanks!

[ghost]

Set it to 0

[seiyria]

So if I understand this correctly, setting idleTimeout to 0 will disable automatic disconnects?

[roytan883]

@alexhultman how to send system ping \ pong from server to clients ? If the clients is mobile phone, need server sending ping and receiving pong to check clients status. Or is there anyway to set heartbeat timeout ?

[ghost]

You can't currently. Clients send messages to the server to keep alive

[RussCoder]

@alexhultman Also I want to point out that currently (I'm using v15.11.0) a connection is closed even if a message was sent by the server to the client, while the documentation says that the idleTimeout is:

Maximum amount of seconds that may pass without sending or getting a message.

I suppose either the behavior should be changed or the documentation must be corrected.

And I would like to have the ping/pong feature too.

[ghost]

@RussCoder You mind creating a new bug for that?

[RussCoder]

@alexhultman
Did it: https://github.com/uNetworking/uWebSockets.js/issues/187

[ghost]

Here you go:

Put this on the client.

let wsTimeout = null;
function ping(){
    let msg = {
        type: 'PING'
    }
    const $pingmsg = SOCKET.send(JSON.stringify(msg));
}
const $keepAlive = setInterval(ping, 50000);

[ghost]

Note that this discussion is slightly outdated; we are going to support sending pings from the server in an easy way in future releases.