Why do I have a client reconnect every 10s - socketcluster

Question

Trying to use socketcluster to exchange events between browser windows.
On the sender side I have :
var options = {
hostname: "myserver.com",
secure: true,
port: 443,
connectTimeout: 86400000,
autoReconnectOptions: {
initialDelay: 100, //milliseconds
randomness: 10, //milliseconds
multiplier: 1.5, //decimal
maxDelay: 60000 //milliseconds
}
};
// Initiate the connection to the server
var socket = socketCluster.connect(options);
socket.on('connect', function () {
console.log('CONNECTED');
});
function sendTime() {
var currentDate = new Date();
var theId = document.getElementById("object_id").value;
count++;
console.log("id "+theId);
socket.emit('identity1', { timestamp: currentDate, id: theId, counter:count});
}
Then on the server I have the worker publish a new event :
socket.on('identity1', function (data) {
count++;
console.log('Handled identity1', data);
scServer.exchange.publish('identity-' + data.id, data);
});
And on the receiver side I have :
// Initiate the connection to the server
var socket = socketCluster.connect(options);
socket.on('connect', function () {
console.log('CONNECTED');
identityChannel = socket.subscribe('identity-' + document.getElementById("object_id").value);
identityChannel.watch(function (data) {
var theTime=data.timestamp;
console.log('ID:' + data.id + ' TIME: ' + theTime);
document.getElementById("data2").innerHTML = 'TIME: ' + theTime + 'COUNTER : ' + data.counter ;
});
});
In the js console of Chrome I see that after 10s on both sides, the client connection is refused like that :
socketcluster.js:678 Uncaught SocketProtocolError {name: "SocketProtocolError", message: "Socket hung up", code: 1006, stack: "SocketProtocolError: Socket hung up↵ at SCSocke…myserver.com/socketcluster.js:1392:10)"}
(anonymous) # socketcluster.js:678
setTimeout (async)
SCSocket._onSCError # socketcluster.js:676
SCSocket._onSCClose # socketcluster.js:781
(anonymous) # socketcluster.js:426
Emitter.emit # socketcluster.js:4152
SCTransport._onClose # socketcluster.js:1494
wsSocket.onclose # socketcluster.js:1392
sender.html:26 CONNECTED
I see that when reconnecting some events are lost.
Q : is this normal ?
Q : can the 10s limit be tuned ?

Answer 1

Actually you have to set the GCP load balancer connection timeout other than the default value of 10s.