async public void ConnectOrDisconnect(object sender, EventArgs eventArgs)
{
try {
if (!_isConnected) {
string uriInput = _demoPage.URI;
_demoPage.Log("CONNECTING: " + uriInput);
await Task.Factory.StartNew(() => {
IConnectionFactory connectionFactory = new StompConnectionFactory(new Uri(uriInput));
_connection = connectionFactory.CreateConnection(null, null);
_connection.ExceptionListener = new ExceptionHandler(_demoPage);
_consumers = new Dictionary<String, List<IMessageConsumer>>();
_session = _connection.CreateSession(false, SessionConstants.AUTO_ACKNOWLEDGE);
_connection.Start();
});
_demoPage.Log("CONNECTED");
// Enable User Interface for Connected application
_demoPage.EnableUI(true);
_isConnected = true;
} else {
_demoPage.Log("CLOSE");
if (_connection != null) {
CloseConsumers();
_consumers.Clear();
_connection.Close();
}
_demoPage.Log("DISCONNECTED");
_isConnected = false;
_demoPage.EnableUI(false);
_connection = null;
}
} catch(Exception exc) {
if (_connection != null) {
CloseConsumers();
_consumers.Clear();
_connection.Close();
}
_demoPage.Log("CONNECTION FAILED: " + exc.Message);
_demoPage.EnableUI(false);
}
}
private void Connect()
{
try
{
IConnectionFactory connectionFactory = new StompConnectionFactory(new Uri(Serverlocation));
_connection = connectionFactory.CreateConnection();
_consumers = new Dictionary <string, List <IMessageConsumer> >();
_session = _connection.CreateSession(false, SessionConstants.AUTO_ACKNOWLEDGE);
_connection.Start();
SubscribeTo(_personalQueue);
SubscribeTo(GlobalBroadcastTopic);
}
catch (Exception)
{
_connection?.Close();
}
}
public TranslatorForm()
{
InitializeComponent();
try
{
IConnectionFactory connectionFactory = new StompConnectionFactory(new Uri(Serverlocation));
var connection = connectionFactory.CreateConnection();
_session = connection.CreateSession(false, SessionConstants.AUTO_ACKNOWLEDGE);
connection.Start();
Output($"Connected to {Serverlocation}");
var destination = _session.CreateQueue("/queue/JmsTranslator");
var consumer = _session.CreateConsumer(destination);
consumer.MessageListener = this;
Output("Translator is ready");
}
catch (Exception e)
{
Output("Could not connect: " + e.Message);
}
}
/*
* "Delegate, invoked by the "click handler", which actually establishes the JMS connection.
*/
private void JMS_Connect()
{
// Immediately disable the connect button
ConnectButton.Enabled = false;
Log("CONNECT:" + LocationText.Text);
String username = (UsernameText.Text.Length != 0) ? UsernameText.Text : null;
String password = (PasswordText.Text.Length != 0) ? PasswordText.Text : null;
try
{
IConnectionFactory connectionFactory = new StompConnectionFactory(new Uri(LocationText.Text));
connection = connectionFactory.CreateConnection(username, password);
Log("CONNECTED");
connection.ExceptionListener = new ExceptionHandler(this);
consumers = new Dictionary<String, List<IMessageConsumer>>();
session = connection.CreateSession(false, SessionConstants.AUTO_ACKNOWLEDGE);
connection.Start();
// Enable User Interface for Connected application
SubscribeButton.Enabled = true;
SendButton.Enabled = true;
UnsubscribeButton.Enabled = true;
DisconnectButton.Enabled = true;
}
catch (Exception exc)
{
if (connection != null)
{
connection.Close();
}
Log("CONNECTION FAILED: " + exc.Message);
ConnectButton.Enabled = true;
}
}
/*
* Button click handlers
*/
private void ConnectButton_Click(object sender, RoutedEventArgs e)
{
// Immediately disable the connect button
ConnectButton.IsEnabled = false;
Log("CONNECT:" + LocationText.Text);
String username = (UsernameText.Text.Length != 0) ? UsernameText.Text : null;
String password = (PasswordText.Password.Length != 0) ? PasswordText.Password : null;
String location = LocationText.Text;
// new StompConnectionFactory() MUST be called on the UI Thread
IConnectionFactory connectionFactory = new StompConnectionFactory(new Uri(location));
Thread connectionThread = new Thread(new ThreadStart(() =>
{
try
{
// connectionFactory.CreateConnection() MUST be called on a separate thread
// to prevent blocking the UI Thread in Silverlight
connection = connectionFactory.CreateConnection(username, password);
connection.ExceptionListener = new ExceptionHandler(this);
consumers = new Dictionary<String, List<IMessageConsumer>>();
session = connection.CreateSession(false, SessionConstants.AUTO_ACKNOWLEDGE);
transactedSession = connection.CreateSession(true, SessionConstants.SESSION_TRANSACTED);
connection.Start();
this.Dispatcher.BeginInvoke(() =>
{
Log("CONNECTED");
// Enable User Interface for Connected application
BeginButton.IsEnabled = true;
SubscribeButton.IsEnabled = true;
SendButton.IsEnabled = true;
UnsubscribeButton.IsEnabled = true;
CloseButton.IsEnabled = true;
});
}
catch (Exception exc)
{
this.Dispatcher.BeginInvoke(() =>
{
ConnectButton.IsEnabled = true;
Log("EXCEPTION: " + exc.GetType().Name);
});
}
}));
connectionThread.Start();
}
