/// <summary>
/// This is the second important method, which creates
/// the proxy, subscribe to connection state events
/// and open a connection with the service
/// </summary>
private void Connect()
{
if (proxy == null)
{
try
{
this.localClient = new SVC.Client();
this.localClient.Name = loginTxtBoxUName.Text.ToString();
this.localClient.AvatarID = loginComboBoxImgs.SelectedIndex;
InstanceContext context = new InstanceContext(this);
proxy = new SVC.ChatClient(context);
//As the address in the configuration file is set to localhost
//we want to change it so we can call a service in internal
//network, or over internet
string servicePath = proxy.Endpoint.ListenUri.AbsolutePath;
string serviceListenPort = proxy.Endpoint.Address.Uri.Port.ToString();
proxy.Endpoint.Address = new EndpointAddress("net.tcp://" + loginTxtBoxIP.Text.ToString() + ":" + serviceListenPort + servicePath);
proxy.Open();
proxy.InnerDuplexChannel.Faulted += new EventHandler(InnerDuplexChannel_Faulted);
proxy.InnerDuplexChannel.Opened += new EventHandler(InnerDuplexChannel_Opened);
proxy.InnerDuplexChannel.Closed += new EventHandler(InnerDuplexChannel_Closed);
proxy.ConnectAsync(this.localClient);
proxy.ConnectCompleted += new EventHandler<ConnectCompletedEventArgs>(proxy_ConnectCompleted);
}
catch (Exception ex)
{
loginTxtBoxUName.Text = ex.Message.ToString();
loginLabelStatus.Content = "Offline";
loginButtonConnect.IsEnabled = true;
}
}
else
{
HandleProxy();
}
}
private void buttonConnect_Click(object sender, RoutedEventArgs e)
{
loginButtonConnect.IsEnabled = false;
loginLabelStatus.Content = "Connecting..";
proxy = null;
Connect();
}
/// <summary>
/// This is the most method I like, it helps us alot
/// We may can't know when a connection is lost in
/// of network failure or service stopped.
/// And also to maintain performance client doesnt know
/// that the connection will be lost when hitting the
/// disconnect button, but when a session is terminated
/// this method will be called, and it will handle everything.
/// </summary>
private void HandleProxy()
{
if (proxy != null)
{
switch (this.proxy.State)
{
case CommunicationState.Closed:
proxy = null;
chatListBoxMsgs.Items.Clear();
chatListBoxNames.Items.Clear();
loginLabelStatus.Content = "Disconnected";
ShowChat(false);
ShowLogin(true);
loginButtonConnect.IsEnabled = true;
break;
case CommunicationState.Closing:
break;
case CommunicationState.Created:
break;
case CommunicationState.Faulted:
proxy.Abort();
proxy = null;
chatListBoxMsgs.Items.Clear();
chatListBoxNames.Items.Clear();
ShowChat(false);
ShowLogin(true);
loginLabelStatus.Content = "Disconnected";
loginButtonConnect.IsEnabled = true;
break;
case CommunicationState.Opened:
ShowLogin(false);
ShowChat(true);
chatLabelCurrentStatus.Content = "online";
chatLabelCurrentUName.Content = this.localClient.Name;
Dictionary<int, Image> images = GetImages();
Image img = images[loginComboBoxImgs.SelectedIndex];
chatCurrentImage.Source = img.Source;
break;
case CommunicationState.Opening:
break;
default:
break;
}
}
}
