private void buttonConnect_Click(object sender, EventArgs e)
{
try
{
if (buttonConnect.Text == "Connect")
{
// Creates a client object that 'lives' here on the client.
client = new RemotingClient();
listBoxLog.Items.Add("Created client with ID " + client.ClientID);
// Hook into the event exposed on the Sink object so we can transfer a server
// message through to this class.
client.clientCallback += OnMessageReceived;
// Hook into the event to allow the server to send (other) notifications
// (Currently only asserted when clients connect or disconnect from server by
// means of registering respective event handlers associated with their client
// references)
client.serverNotificationCallback += OnServerNotification;
if (channel == null)
{
int clientChannel = FindUnusedPort(IPAddress.Loopback);
listBoxLog.Items.Add("Using (unused) client port " + clientChannel);
if (clientChannel != 0)
{
BinaryServerFormatterSinkProvider serverProv = new BinaryServerFormatterSinkProvider();
serverProv.TypeFilterLevel = System.Runtime.Serialization.Formatters.TypeFilterLevel.Full;
BinaryClientFormatterSinkProvider clientProv = new BinaryClientFormatterSinkProvider();
IDictionary props = new Hashtable();
props["port"] = clientChannel;
// Register a client channel so the server an communicate back - it needs a channel
// opened for the callback to the CallbackSink object that is anchored on the client!
// channel = new HttpChannel(clientChannel++);
channel = new HttpChannel(props, clientProv, serverProv);
}
else
{
throw new Exception("Couldn't find unused client port!");
}
}
// Registers a channel with the channel services
ChannelServices.RegisterChannel(channel, false);
// Now create a transparent proxy to the server component
MarshalByRefObject obj = (MarshalByRefObject)RemotingServices.Connect(typeof(RemotingServer), "http://" + textBoxServerIPAddress.Text + ":" + textBoxServerPortConnect.Text + "/Server");
server = obj as RemotingServer;
// Create messaging callback objects
clientCallback = new RemotingClient.ClientCallback(client.SendMessage);
// Register callback
if (clientCallback != null)
{
// Simple messaging callback for broadcasting of messages from one client
server.RegisterMessageCallback(clientCallback);
// Messaging callback associated with the client to allow for sending messages to a particular client
server.RegisterMessageCallback(clientCallback, client);
}
buttonConnect.Text = "Disconnect";
textBoxServerIPAddress.Enabled = false;
textBoxServerPortConnect.Enabled = false;
foreach (Control control in tabPageServer.Controls)
{
control.Enabled = false;
}
}
else
{
if (server != null)
{
if (clientCallback != null)
{
server.UnregisterMessageCallback(clientCallback);
}
if (client != null)
{
server.UnregisterMessageCallback(client);
}
}
if (client != null)
{
client.clientCallback -= OnMessageReceived;
client.serverNotificationCallback -= OnServerNotification;
}
if (channel != null)
{
ChannelDataStore cds = (ChannelDataStore)channel.ChannelData;
foreach (string s in cds.ChannelUris)
{
channel.StopListening(s);
}
ChannelServices.UnregisterChannel(channel);
}
clientCallback = null;
server = null;
client = null;
channel = null;
OnServerNotification();
buttonConnect.Text = "Connect";
textBoxServerIPAddress.Enabled = true;
textBoxServerPortConnect.Enabled = true;
foreach (Control control in tabPageServer.Controls)
{
control.Enabled = true;
}
}
}
catch (Exception ex)
{
listBoxLog.Items.Add(ex.Message);
}
}