public static bool Add(string key, DeviceListener s)
{
try
{
return(DeviceListeners.TryAdd(key, s));
}
catch (Exception e)
{
ORTLog.LogS(string.Format("SharedMem Exception in Add {0}", e.ToString()));
return(false);
}
}
protected override void ServerThreadStart()
{
Socket clientSocket = null;
TCPSocketListener socketListener = null;
while (!m_stopServer)
{
try
{
clientSocket = m_server.AcceptSocket();
}
catch (Exception)
{
// This happens when we shutdown the servive
continue;
}
try
{
ORTLog.LogS(String.Format("ORTDevice: Connection made {0}", clientSocket.RemoteEndPoint));
}
catch (Exception e)
{
ORTLog.LogS(string.Format("ORTDevice Exception {0}", e.ToString()));
continue;
}
// Create a SocketListener object for the client.
socketListener = new DeviceListener(clientSocket);
// Add the socket listener to an array list in a thread safe fashion.
lock (m_socketListenersList)
{
m_socketListenersList.Add(socketListener);
}
// Start communicating with the client in a different thread.
socketListener.StartSocketListener();
}
}
protected override void SocketListenerThreadStart()
{
int size = 0;
Byte[] byteBuffer = new Byte[1024];
try { m_clientSocket.ReceiveTimeout = 500; } catch (Exception) { }
while (!m_stopClient)
{
try
{
size = m_clientSocket.Receive(byteBuffer);
if (size == 0)
{
// Indicates the remote side closed the connection
break;
}
}
catch (SocketException e)
{
if (e.ErrorCode == WSAETIMEDOUT)
{
// Timeout while waiting for shutdown
continue;
}
else
{
ORTLog.LogS(string.Format("ORTCommand Exception in Receive {0}", e.ToString()));
break;
}
}
catch (Exception e)
{
ORTLog.LogS(string.Format("ORTCommand Exception in Receive {0}", e.ToString()));
break;
}
// Get a string representation from the socket buffer
string data = Encoding.ASCII.GetString(byteBuffer, 0, size);
if (!IsValidIpsData(data))
{
ORTLog.LogS(String.Format("ORTCommand: Invalid data={0}", CleanString(data)));
break;
}
string customer = "";
string device = "";
string command = "";
try
{
// Parse the customer+device
customer = data.Split(null)[1];
device = data.Split(null)[2];
// Parse the command - hacky :/
int i = data.IndexOf(" ", data.IndexOf(" ", data.IndexOf(" ") + 1) + 1) + 1;
command = data.Substring(i);
// Remove the carriage return and/or line feed
command = Regex.Replace(command, @"\r\n?|\n", "");
}
catch (Exception)
{
ORTLog.LogS(String.Format("ORTCommand: Invalid data={0}", CleanString(data)));
break;
}
ORTLog.LogS(string.Format("ORTCommand: customer={0} device={1} command={2}", customer, device, command));
string key = GetKey(customer, device);
// Get the cooresponding socket and send the command
DeviceListener d = SharedMem.Get(key);
if (d != null)
{
try
{
if (d.Send(Encoding.ASCII.GetBytes(command)) == 0)
{
break;
}
}
catch (Exception e)
{
ORTLog.LogS(string.Format("ORTCommand Exception {0}", e.ToString()));
break;
}
}
else
{
ORTLog.LogS(string.Format("ORTCommand: customer device combination not found: {0}", key));
}
}
ORTLog.LogS(String.Format("ORTCommand: Connection dropped {0}", this.ToString()));
try { m_clientSocket.Shutdown(SocketShutdown.Both); } catch (Exception) { }
m_clientSocket.Close();
m_markedForDeletion = true;
}
protected override void SocketListenerThreadStart()
{
Byte[] byteBuffer = new Byte[1024];
int size = 0;
try
{
size = m_clientSocket.Receive(byteBuffer);
}
catch (Exception e)
{
ORTLog.LogS(string.Format("ORTDevice Exception in Receive {0}", e.ToString()));
m_clientSocket.Close();
m_markedForDeletion = true;
return;
}
string data = Encoding.ASCII.GetString(byteBuffer, 0, size);
if (!IsValidIpsData(data))
{
ORTLog.LogS(String.Format("ORTDevice: Invalid data={0}", CleanString(data)));
ORTLog.LogS(String.Format("ORTDevice: Connection dropped {0}", this.ToString()));
try { m_clientSocket.Shutdown(SocketShutdown.Both); } catch (Exception) { }
m_clientSocket.Close();
m_markedForDeletion = true;
return;
}
string customer = "";
string device = "";
string ipAddr = "";
try
{
// Parse the customer+device
customer = data.Split(null)[1];
device = data.Split(null)[2];
ipAddr = data.Split(null)[3];
}
catch (Exception)
{
ORTLog.LogS(String.Format("ORTDevice: Invalid data={0}", CleanString(data)));
ORTLog.LogS(String.Format("ORTDevice: Connection dropped {0}", this.ToString()));
try { m_clientSocket.Shutdown(SocketShutdown.Both); } catch (Exception) { }
m_clientSocket.Close();
m_markedForDeletion = true;
return;
}
string key = GetKey(customer, device);
// Check if this key already exists
DeviceListener d = SharedMem.Get(key);
if (d != null)
{
// Detected duplicate
ORTLog.LogS(String.Format("ORTDevice: Detected duplicate customer={0} device={1}", customer, device));
// Remove existing key
ORTLog.LogS(String.Format("ORTDevice: Remove listener for customer={0} device={1}", customer, device));
SharedMem.Remove(key);
// Shutdown the existing (zombie) listener
d.StopSocketListener();
}
ORTLog.LogS(String.Format("ORTDevice: Add listener for customer={0} device={1} localIpAddr={2}", customer, device, ipAddr));
if (!SharedMem.Add(key, this))
{
ORTLog.LogS(String.Format("ORTDevice: Unable to add key={0}", key));
ORTLog.LogS(String.Format("ORTDevice: Connection dropped {0}", this.ToString()));
try { m_clientSocket.Shutdown(SocketShutdown.Both); } catch (Exception) { }
m_clientSocket.Close();
m_markedForDeletion = true;
return;
}
// Block forever waiting for the connection to terminate
while (!m_stopClient)
{
bool poll = false;
try
{
poll = m_clientSocket.Poll(100000, SelectMode.SelectRead); // 100ms
}
catch (Exception e)
{
ORTLog.LogS(string.Format("ORTDevice Exception in Poll {0}", e.ToString()));
break;
}
if (poll)
{
// Connection has been closed, reset, or terminated
break;
}
}
if (SharedMem.Remove(key))
{
ORTLog.LogS(String.Format("ORTDevice: Removed listener for customer={0} device={1}", customer, device));
}
ORTLog.LogS(String.Format("ORTDevice: Connection dropped {0}", this.ToString()));
try { m_clientSocket.Shutdown(SocketShutdown.Both); } catch (Exception) { }
m_clientSocket.Close();
m_markedForDeletion = true;
}
