src/vs/platform/remote/common/remoteAgentConnection.ts/PersistentConnection/triggerPermanentFailure
class PersistentConnection:	public static triggerPermanentFailure(millisSinceLastIncomingData: number, attempt: number, handled: boolean): void {
		this._permanentFailure = true;
		this._permanentFailureMillisSinceLastIncomingData = millisSinceLastIncomingData;
		this._permanentFailureAttempt = attempt;
		this._permanentFailureHandled = handled;
		this._instances.forEach(instance => instance._gotoPermanentFailure(this._permanentFailureMillisSinceLastIncomingData, this._permanentFailureAttempt, this._permanentFailureHandled));
	}