/// <summary>
/// Callback method to handle socket closing.
/// </summary>
/// <param name="client">The client to receive messages from.</param>
internal void ClientCloseHandler(AsyncSocketClient client)
{
//fire off a closing event
if (OnClose != null)
{
System.EventArgs e = new System.EventArgs();
OnClose(this, e);
}
}
/// <summary>
/// Callback method to handle errors.
/// </summary>
/// <param name="client">The client to receive messages from.</param>
/// <param name="exception">The generated exception.</param>
internal void ClientErrorHandler(AsyncSocketClient client,
Exception exception)
{
//fire off an error handler
if (OnError != null)
{
CommonErrorEventArgs e = new CommonErrorEventArgs(exception);
OnError(this, e);
}
}
/// <summary>
/// Start processing server connected client
/// </summary>
/// <param name="client"></param>
public void ProcessServerClient(AsyncSocketClient client)
{
_serverMode = true;
asClient = client;
_Host = asClient.ServerIPAddress;
_Port = asClient.ServerPort;
_SentUnbindPacket = false;
asClient.MessageRecieved += ClientMessageHandler;
asClient.TranciverFailed += ClientErrorHandler;
asClient.SocketClosed += ClientCloseHandler;
}
/// <summary>
/// Callback method to handle received messages. The AsyncSocketClient
/// library calls this; don't call it yourself.
/// </summary>
/// <param name="client">The client to receive messages from.</param>
internal void ClientMessageHandler(AsyncSocketClient client)
{
try
{
Queue responseQueue = new PduFactory().GetPduQueue(client.Buffer);
ThreadPool.QueueUserWorkItem(new WaitCallback(ProcessPduQueue), responseQueue);
}
catch (Exception exception)
{
if (OnError != null)
{
CommonErrorEventArgs e = new CommonErrorEventArgs(exception);
OnError(this, e);
}
}
}
/// <summary>
/// Unbinds the SMPPCommunicator from the SMSC then disconnects the socket
/// when it receives the unbind response from the SMSC. This will also stop the
/// timer that sends out the enquire_link packets if it has been enabled. You need to
/// explicitly call this to unbind.; it will not be done for you.
/// </summary>
public void Unbind()
{
if (timer != null)
{
timer.Stop();
}
if (!_SentUnbindPacket && IsBinded)
{
SmppUnbind request = new SmppUnbind();
SendPdu(request);
_SentUnbindPacket = true;
}
asClient.Dispose();
asClient = null;
_isBinded = false;
}
/// <summary>
/// Connects and binds the SMPPCommunicator to the SMSC, using the
/// values that have been set in the constructor and through the
/// properties. This will also start the timer that sends enquire_link packets
/// at regular intervals, if it has been enabled.
/// </summary>
/// <remarks>
/// Can be used only in client mode
/// </remarks>
public void Bind()
{
if (!_serverMode)
{
try
{
if (asClient != null)
{
asClient.Disconnect();
}
}
catch
{
//drop it on the floor
}
//connect
try
{
asClient = new AsyncSocketClient(10240, null,
new AsyncSocketClient.MessageHandler(ClientMessageHandler),
new AsyncSocketClient.SocketClosingHandler(ClientCloseHandler),
new AsyncSocketClient.ErrorHandler(ClientErrorHandler));
asClient.Connect(Host, Port);
SmppBind request = new SmppBind();
request.SystemId = SystemId;
request.Password = Password;
request.SystemType = SystemType;
request.InterfaceVersion = Version;
request.AddressTon = TonType;
request.AddressNpi = NpiType;
request.AddressRange = AddressRange;
request.BindType = BindType;
SendPdu(request);
_SentUnbindPacket = false;
_isBinded = true;
if (_EnquireLinkInterval > 0)
{
if (timer == null)
{
timer = new System.Timers.Timer();
timer.Elapsed += new ElapsedEventHandler(TimerElapsed);
}
if (timer != null) //reset the old timer
{
timer.Stop();
timer.Interval = EnquireLinkInterval * 1000;
timer.Start();
}
}
}
catch (Exception exc)
{
if (OnError != null)
{
OnError(this, new CommonErrorEventArgs(exc));
}
}
}
}
