public static PingWorker StartNewWorker(AsyncRWLock commLock, CommHelperBase sharedCommHelper, LCGen sharedReqLCG, LCGen sharedAnsLCG, int pingInterval, Action <Exception> pingThreadFailedCallback)
{
var result = new PingWorker(commLock, sharedCommHelper, sharedReqLCG, sharedAnsLCG, pingInterval, pingThreadFailedCallback);
result.pingThread.Start();
return(result);
}
private void Worker(AsyncRWLock commLock, CommHelperBase commHelper, LCGen reqLCG, LCGen ansLCG, int pingInterval, CancellationToken token, Action <Exception> pingThreadFailedCallback)
{
using (var taskRunner = new AsyncRunner())
{
var nullBuff = new byte[0];
while (!token.IsCancellationRequested)
{
commLock.EnterWriteLock();
try
{
Answer answer = Answer.Invalid;
taskRunner.AddTask(() => commHelper.SendRequest(ReqType.Ping, reqLCG.GenerateValue(), nullBuff, 0, 0));
taskRunner.AddTask(commHelper.ReceiveAnswer, (obj) => answer = obj);
taskRunner.RunPendingTasks();
if (answer.ansType != AnsType.Pong || answer.seq != ansLCG.GenerateValue())
{
throw new Exception();
}
}
catch (Exception)
{
//try to resync
try { taskRunner.ExecuteTask(commHelper.Resync); }
catch (Exception ex) { pingThreadFailedCallback?.Invoke(ex); return; }
}
finally
{
commLock.ExitWriteLock();
}
try { taskRunner.ExecuteTask(() => Task.Delay(pingInterval, token)); }
catch (TaskCanceledException) { return; }
catch (Exception ex) { pingThreadFailedCallback?.Invoke(ex); return; }
}
}
}
private PingWorker(AsyncRWLock commLock, CommHelperBase sharedCommHelper, LCGen sharedReqLCG, LCGen sharedAnsLCG, int pingInterval, Action <Exception> pingThreadFailedCallback)
{
this.CTS = new CancellationTokenSource();
this.pingThread = new Thread(() => Worker(commLock, sharedCommHelper, sharedReqLCG, sharedAnsLCG, pingInterval, CTS.Token, pingThreadFailedCallback));
}