/// <summary>
/// Creates a socket client object and subscribes to events for
/// connect, disconnet and data receive
/// </summary>
/// <returns>Socket client object</returns>
private SocketClient createSocketClient()
{
SocketClient client = null;
if (ServerAddress != null && ServerPort >= 0)
{
System.Net.IPAddress ipaddress = System.Net.IPAddress.Parse(ServerAddress);
client = new SocketClient(ipaddress, ServerPort);
client.OnClientDataReceived += _socketClient_OnClientDataReceived;
client.OnClientConnected += _socketClient_OnClientConnected;
client.OnClientConnectionClosed += _socketClient_OnClientConnectionClosed;
}
return client;
}
/// <summary>
/// Uninitialize. Stop socket server
/// </summary>
/// <returns>true</returns>
private void unInit()
{
if (socketClient != null)
{
socketClient.Dispose();
socketClient = null;
}
}
/// <summary>
/// Thread proc which tries to connect to the tcpip server. If it cannot
/// connect, it sleeps for sometime and retries
/// </summary>
private void connectProc()
{
while (!_quitConnect)
{
try
{
Log.Debug("Trying to connecting to tcp/ip server");
if (socketClient == null)
{
socketClient = createSocketClient();
}
if (socketClient != null)
{
if (!socketClient.Connect())
{
Log.Debug("Tcp/ip server not detected. Will retry...");
Thread.Sleep(waitInterval);
}
else
{
Log.Debug("Successfully connected to tcp/ip server");
_evtConnectRetry.WaitOne();
_evtConnectRetry.Reset();
}
}
else
{
Thread.Sleep(waitInterval);
}
}
catch (Exception ex)
{
Log.Debug("Error connecting to server " + ex);
}
}
Log.Debug("Thread exited");
}
/// <summary>
/// Closes the client socket. Unsunscribes from events
/// </summary>
/// <param name="client"></param>
private void closeClientSocket(SocketClient client)
{
if (client == null)
{
return;
}
client.OnClientDataReceived -= _socketClient_OnClientDataReceived;
client.OnClientConnected -= _socketClient_OnClientConnected;
client.OnClientConnectionClosed -= _socketClient_OnClientConnectionClosed;
}
/// <summary>
/// Event handler invoked when socket client disconnects.
/// </summary>
/// <param name="addr">Address of the tcp/ip server</param>
private void _socketClient_OnClientConnectionClosed(System.Net.IPAddress addr)
{
Log.Debug("Disconnected from " + addr);
closeClientSocket(socketClient);
socketClient = null;
_evtConnectRetry.Set();
onDisconnected(addr);
}
/// <summary>
/// Initializes a new instance of the class.
/// </summary>
public WinsockClientActuatorBase()
{
socketClient = null;
}
/// <summary>
/// Initializes a new instance of the class.
/// </summary>
public WinsockClientActuatorBase()
{
socketClient = null;
}