Handle Client Reconnection Events
The Socket.IO client exposes lifecycle events that help monitor reconnection attempts.
Useful events include:
connect.disconnect.connect_error.reconnect_attempt.reconnect.reconnect_failed.
Some reconnection-related events are emitted by the Socket.IO Manager rather than the individual Socket instance.
You can access the Manager through socket.io.
Monitor Reconnection
socket.on('disconnect', (reason) => {
console.log('Connection lost:', reason);
});
socket.on('connect_error', (error) => {
console.error('Connection error:', error.message);
});
socket.io.on('reconnect_attempt', (attempt) => {
console.log('Reconnection attempt:', attempt);
});
socket.io.on('reconnect', (attempt) => {
console.log('Reconnected after attempts:', attempt);
});
socket.io.on('reconnect_failed', () => {
console.error('Reconnection attempts exhausted');
});Registers listeners for connection errors and reconnection lifecycle events. Manager-level events are registered through socket.io.
Key Takeaways
Socket.IO exposes connection lifecycle events.
Manager-level reconnection events are registered through socket.io.
Use lifecycle events to update application status.