/// <summary>
/// Establishes the connection to the remote server; initializes this <see cref="_vncConnection"/>'s properties from
/// <see cref="BaseConnectionForm{T}.Connection"/> and then calls <see cref="VncClient.Connect(string, int, VncClientConnectOptions)"/> on
/// <see cref="_vncConnection"/>.
/// </summary>
public override void Connect()
{
OnResize(null);
ParentForm.Closing += VncConnectionForm_FormClosing;
VncClientConnectOptions connectionOptions = new VncClientConnectOptions()
{
PasswordRequiredCallback = GetPassword
};
// Establish the actual connection
_vncConnection.Connected += OnConnected;
_vncConnection.ConnectionFailed += OnConnectionLost;
_vncConnection.AllowInput = !Connection.ViewOnly;
_vncConnection.AllowRemoteCursor = false;
_vncConnection.AllowClipboardSharingFromServer = Connection.ShareClipboard;
_vncConnection.AllowClipboardSharingToServer = Connection.ShareClipboard;
// Spin the connection process up on a different thread to avoid blocking the UI.
Thread connectionThread = new Thread(
() =>
{
try
{
_vncConnection.Client.Connect(Connection.Host, Connection.Port + Connection.Display, connectionOptions);
}
catch (Exception e)
{
Invoke(new Action(() => OnConnectionLost(this, new ErrorEventArgs(e))));
}
});
connectionThread.Start();
}
private void btnConnect_Click(object sender, EventArgs e)
{
if (vncControl.Client.IsConnected)
{
vncControl.Client.Close();
}
else
{
var hostname = txtHostname.Text.Trim();
if (hostname == "")
{
MessageBox.Show(this, "Hostname isn't set.", "Hostname",
MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
int port;
if (!int.TryParse(txtPort.Text, out port) || port < 1 || port > 65535)
{
MessageBox.Show(this, "Port must be between 1 and 65535.", "Port",
MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
var options = new VncClientConnectOptions();
if (txtPassword.Text != "")
{
options.Password = txtPassword.Text.ToCharArray();
}
try
{
try
{
Cursor = Cursors.WaitCursor;
try
{
vncControl.Client.Connect(hostname, port, options);
}
finally
{
Cursor = Cursors.Default;
}
}
catch (VncException ex)
{
MessageBox.Show(this,
"Connection failed (" + ex.Reason.ToString() + "," + ex.Message + ").",
"Connect", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
catch (SocketException ex)
{
MessageBox.Show(this,
"Connection failed (" + ex.SocketErrorCode.ToString() + ").",
"Connect", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
vncControl.Focus();
}
finally
{
if (options.Password != null)
{
Array.Clear(options.Password, 0, options.Password.Length);
}
}
}
}
