public void Start()
{
NetworkClient.BeginReceive(NetworkMessageReceived, null);
if (LocalNode != null)
{
Console.WriteLine("Network: Listening on " + NetworkClient.Client.LocalEndPoint);
}
RetryTimer.Change(10000, 10000);
}
/// <summary>
/// Stops the discovery.
/// </summary>
public void StopDiscovery()
{
Stopped = true;
RetryTimer?.Dispose();
RetryTimer = null;
foreach (var udpClient in UdpSendClients)
{
udpClient.Close();
}
}
public void Stop()
{
try
{
RetryTimer.Dispose();
NetworkClient.Close();
}
catch
{
}
}
/// <summary>
/// Stops the discovery.
/// </summary>
public void StopDiscovery()
{
Stopped = true;
if (UdpClient != null)
{
UdpClient.Close();
UdpClient = null;
}
if (RetryTimer != null)
{
RetryTimer.Dispose();
RetryTimer = null;
}
}
private void MessageTimer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
RetryTimer.Stop();
if (retryCount >= 3)
{
return;
}
if (CommandState == DeviceState.EOESent)
{
if (LastCtxtForWhichSentEoE != null)
{
LastCtxtForWhichSentEoE.RequestContext.ResponseQCallback(LastCtxtForWhichSentEoE.Response);
retryCount++;
RetryTimer.Start();
}
}
else
{
throw new ApplicationException("Invalid Retry control flow detected");
}
}
public void ProcessOther(CommandContext cmdCxt, BaseMessage categorizedCommand)
{
//if (AppConfiguration.useSequenceNumber)
//{
// int sn = commandBeingProcessed.SeqNum.Value;
// if (CommandState == DeviceState.None || commandBeingProcessed.CommandName.Equals("INIT"))//first time or reinit
// {
// SeqNum = sn;
// //CommandState = DeviceState.Ready;
// }
// else
// {
// if (sn == SeqNum + 1)
// {
// SeqNum = sn;
// }
// else if (sn == SeqNum)
// {
// CommandState = DeviceState.ErrorSent;
// cmdCxt.ResponseQCallback($"Duplicate Sequence number. Received {sn}");
// return;
// }
// else
// {
// CommandState = DeviceState.ErrorSent;
// cmdCxt.ResponseQCallback($"Sequence number out of order. Received {sn}");
// return;
// }
// }
//}
commandBeingProcessed = categorizedCommand;
if (IsError && !commandBeingProcessed.CommandName.Equals("INIT"))
{
cmdCxt.ResponseQCallback(ReceptionError.Generate("2001"));
CommandState = DeviceState.ErrorSent;
return;
}
if (commandBeingProcessed.Type == MessageType.Ack)
{
if (CommandState == DeviceState.Ready)
{
return;//Duplicate ACK
}
while (CommandState != DeviceState.EOESent)
{
Thread.Sleep(0);
}
RetryTimer.Stop();
LastCtxtForWhichSentEoE = null;
retryCount = 0;
CommandState = DeviceState.Ready;
IsReady = true;
return;
}
if ((CommandState == DeviceState.EOESent || CommandState == DeviceState.CommandResponseSent) &&
commandBeingProcessed.CommandName.Equals("INIT"))
{
RetryTimer.Stop();
LastCtxtForWhichSentEoE = null;
retryCount = 0;
CommandState = DeviceState.Ready;
IsReady = true;
}
else if (!(CommandState == DeviceState.None ||
CommandState == DeviceState.Ready ||
CommandState == DeviceState.CommandResponseSent ||
CommandState == DeviceState.ErrorSent ||
CommandState == DeviceState.EventSent))
{
cmdCxt.ResponseQCallback(ReceptionError.Generate("9001"));
CommandState = DeviceState.ErrorSent;
return;
}
commandBeingProcessed.PreProcess(cmdCxt, this);
if (commandBeingProcessed.Type == MessageType.Action || commandBeingProcessed.Type == MessageType.Control)
{
commandBeingProcessed.Process(cmdCxt, this);
}
}
