private void ErrorHandler(object sender, Exception exn)
{
Program.AssertOffEventThread();
if (this.Disposing || this.IsDisposed)
{
return;
}
Program.Invoke(this, delegate()
{
VNCGraphicsClient v = (VNCGraphicsClient)sender;
if (exn is VNCAuthenticationException || exn is CryptographicException)
{
Log.Debug(exn, exn);
// Clear the stored VNC password for this server.
Settings.SetVNCPassword(sourceVM.uuid, null);
RetryConnection(v, exn);
}
else if (exn is IOException || exn is Failure)
{
Log.Debug(exn, exn);
SleepAndRetryConnection_(v);
}
else
{
Log.Warn(exn, exn);
this.errorMessage = exn.Message;
}
});
}
private void RetryConnection(VNCGraphicsClient v, Exception exn)
{
if (vncClient == v && !v.Terminated && Source.power_state == vm_power_state.Running)
{
ThreadPool.QueueUserWorkItem(new WaitCallback(Connect), new KeyValuePair <VNCGraphicsClient, Exception>(v, exn));
}
}
private void ConnectHostedConsole(VNCGraphicsClient v, Console console)
{
Program.AssertOffEventThread();
Host host = console.Connection.Resolve(Source.resident_on);
if (host == null)
{
throw new Failure(Failure.INTERNAL_ERROR, Messages.VNC_HOST_GONE);
}
Uri uri = new Uri(console.location);
String SessionUUID;
lock (activeSessionLock)
{
// use the elevated credentials, if provided, for connecting to the console (CA-91132)
activeSession = (string.IsNullOrEmpty(ElevatedUsername) || string.IsNullOrEmpty(ElevatedPassword)) ?
console.Connection.DuplicateSession() : console.Connection.ElevatedSession(ElevatedUsername, ElevatedPassword);
SessionUUID = activeSession.uuid;
}
Stream stream = HTTPHelper.CONNECT(uri, console.Connection, SessionUUID, false, true);
InvokeConnection(v, stream, console);
}
private void ConnectHostedConsole(VNCGraphicsClient v, XenAPI.Console console, string session_uuid)
{
//Program.AssertOffEventThread();
Uri uri = new Uri(console.location);
Stream stream = HTTP.CONNECT(uri, null, session_uuid, 0);
InvokeConnection(v, stream, console, m_vncPassword);
}
private void SleepAndRetryConnection(object o)
{
VNCGraphicsClient v = (VNCGraphicsClient)o;
Program.AssertOffEventThread();
ConnectionRetries++;
Thread.Sleep(ConnectionRetries < SHORT_RETRY_COUNT ? SHORT_RETRY_SLEEP_TIME : RETRY_SLEEP_TIME);
RetryConnection(v, null);
}
private void InvokeConnection(VNCGraphicsClient v, Stream stream, Console console)
{
Program.Invoke(this, delegate()
{
// This is the last chance that we have to make sure that we've not already
// connected this VNCGraphicsClient. Now that we are back on the event thread,
// we're guaranteed that no-one will beat us to the v.connect() call. We
// hand over responsibility for closing the stream at that point, so we have to
// close it ourselves if the client is already connected.
if (v.Connected || v.Terminated)
{
stream.Close();
}
else
{
v.SendScanCodes = UseSource && !this.sourceIsPV;
v.SourceVM = sourceVM;
v.Console = console;
v.connect(stream, this.vncPassword);
}
});
}
private void Connect(object o)
{
if (Program.RunInAutomatedTestMode)
{
return;
}
Program.AssertOffEventThread();
KeyValuePair <VNCGraphicsClient, Exception> kvp = (KeyValuePair <VNCGraphicsClient, Exception>)o;
VNCGraphicsClient v = kvp.Key;
Exception error = kvp.Value;
try
{
if (UseSource)
{
List <Console> consoles;
lock (hostedConsolesLock)
{
consoles = sourceVM.Connection.ResolveAll(hostedConsoles);
}
foreach (Console console in consoles)
{
if (vncClient != v)
{
// We've been replaced. Give up.
return;
}
if (console.protocol == console_protocol.rfb)
{
try
{
ConnectHostedConsole(v, console);
return;
}
catch (Exception exn)
{
Failure failure = exn as Failure;
bool isHostGoneMessage = failure != null &&
failure.ErrorDescription.Count == 2 &&
failure.ErrorDescription[0] == Failure.INTERNAL_ERROR &&
failure.ErrorDescription[1] == Messages.VNC_HOST_GONE;
if (isHostGoneMessage)
{
if (!_suppressHostGoneMessage)
{
Log.Debug(exn, exn);
_suppressHostGoneMessage = true;
}
}
else
{
Log.Debug(exn, exn);
_suppressHostGoneMessage = false;
}
}
}
}
Log.Debug("Did not find any hosted consoles");
SleepAndRetryConnection(v);
}
else
{
if (vncIP == null)
{
Log.DebugFormat("vncIP is null. Abort VNC connection attempt");
OnVncConnectionAttemptCancelled();
return;
}
this.vncPassword = Settings.GetVNCPassword(sourceVM.uuid);
if (this.vncPassword == null)
{
bool lifecycleOperationInProgress = sourceVM.current_operations.Values.Any(VM.is_lifecycle_operation);
if (haveTriedLoginWithoutPassword && !lifecycleOperationInProgress)
{
Program.Invoke(this, delegate
{
promptForPassword(ignoreNextError ? null : error);
});
ignoreNextError = false;
if (this.vncPassword == null)
{
Log.Debug("User cancelled VNC password prompt: aborting connection attempt");
OnUserCancelledAuth();
return;
}
}
else
{
Log.Debug("Attempting passwordless VNC login");
this.vncPassword = new char[0];
ignoreNextError = true;
haveTriedLoginWithoutPassword = true;
}
}
Stream s;
lock (pendingVNCConnectionLock)
{
s = pendingVNCConnection;
Log.DebugFormat("Using pending VNC connection");
pendingVNCConnection = null;
}
if (s == null)
{
Log.DebugFormat("Connecting to vncIP={0}, port={1}", this.vncIP, VNC_PORT);
s = connectGuest(this.vncIP, VNC_PORT, sourceVM.Connection);
Log.DebugFormat("Connected to vncIP={0}, port={1}", this.vncIP, VNC_PORT);
}
InvokeConnection(v, s, null);
// store the empty vnc password after a successful passwordless login
if (haveTriedLoginWithoutPassword && this.vncPassword.Length == 0)
{
Program.Invoke(this, () => Settings.SetVNCPassword(sourceVM.uuid, this.vncPassword));
}
}
}
catch (Exception exn)
{
Log.Warn(exn, exn);
SleepAndRetryConnection(v);
}
}
/// <summary>
/// Creates the actual VNC or RDP client control.
/// </summary>
private void initSubControl()
{
Program.AssertOnEventThread();
//When switch to RDP from VNC, if RDP IP is empty, do not try to switch.
if (String.IsNullOrEmpty(rdpIP) && !UseVNC && RemoteConsole != null)
{
return;
}
bool wasFocused = false;
this.Controls.Clear();
Size oldSize = new Size(1024, 768);
// Kill the old client.
if (RemoteConsole != null)
{
oldSize = RemoteConsole.DesktopSize;
wasFocused = RemoteConsole.ConsoleControl != null && RemoteConsole.ConsoleControl.Focused;
RemoteConsole.DisconnectAndDispose();
RemoteConsole = null;
this.vncPassword = null;
}
// Reset
haveTriedLoginWithoutPassword = false;
if (UseVNC || String.IsNullOrEmpty(rdpIP))
{
this.AutoScroll = false;
this.AutoScrollMinSize = new Size(0, 0);
vncClient = new VNCGraphicsClient(this);
vncClient.UseSource = UseSource;
vncClient.DesktopResized += ResizeHandler;
vncClient.Resize += ResizeHandler;
vncClient.ErrorOccurred += ErrorHandler;
vncClient.ConnectionSuccess += ConnectionSuccess;
vncClient.Dock = DockStyle.Fill;
}
else
{
if (rdpClient == null)
{
if (this.ParentForm is FullScreenForm)
{
oldSize = ((FullScreenForm)ParentForm).contentPanel.Size;
}
this.AutoScroll = true;
this.AutoScrollMinSize = oldSize;
rdpClient = new RdpClient(this, oldSize, ResizeHandler);
rdpClient.OnDisconnected += new EventHandler(parentVNCTabView.RdpDisconnectedHandler);
}
}
if (RemoteConsole != null && RemoteConsole.ConsoleControl != null)
{
RemoteConsole.KeyHandler = this.KeyHandler;
RemoteConsole.SendScanCodes = !this.sourceIsPV;
RemoteConsole.Scaling = Scaling;
RemoteConsole.DisplayBorder = this.displayFocusRectangle;
SetKeyboardAndMouseCapture(autoCaptureKeyboardAndMouse);
if (wasPaused)
{
RemoteConsole.Pause();
}
else
{
RemoteConsole.Unpause();
}
ConnectToRemoteConsole();
if (wasFocused)
{
RemoteConsole.Activate();
}
}
parentVNCTabView.ShowGpuWarningIfRequired();
}
private void SleepAndRetryConnection_(VNCGraphicsClient v)
{
ThreadPool.QueueUserWorkItem(new WaitCallback(SleepAndRetryConnection), v);
}
/// <summary>
/// Creates the actual VNC client control.
/// </summary>
private void initSubControl(int width, int height, bool scaling, bool show_border)
{
Program.MainWindow = this;
bool wasFocused = m_vncClient != null && m_vncClient.Focused;
this.Controls.Clear();
Size newSize;
Size oldSize = new Size(1024, 768);
if (width == 0 || height == 0)
{
newSize = new Size(1024, 768);
}
else
{
newSize = new Size(width, height);
}
// Kill the old client.
if (m_vncClient != null)
{
oldSize = m_vncClient.DesktopSize;
m_vncClient.Disconnect();
m_vncClient.Dispose();
m_vncClient = null;
}
// Reset
this.AutoScroll = false;
this.AutoScrollMinSize = new Size(0, 0);
m_vncClient = new VNCGraphicsClient(this);
m_vncClient.Size = newSize;
this.Size = newSize;
m_vncClient.UseSource = true;
m_vncClient.SendScanCodes = !this.m_sourceIsPV;
m_vncClient.Dock = DockStyle.Fill;
this.m_vncClient.Scaling = scaling; // SCVMM requires a scaled image
m_vncClient.DisplayBorder = show_border;
m_vncClient.AutoScaleDimensions = newSize;
m_vncClient.AutoScaleMode = AutoScaleMode.Inherit;
this.m_vncClient.DesktopResized += ResolutionChangeHandler;
//this.m_vncClient.Resize += ResizeHandler;
//this.m_vncClient.ErrorOccurred += ErrorHandler;
//this.m_vncClient.ConnectionSuccess += ConnectionSuccess;
//this.m_vncClient.ErrorOccurred
//this.m_vncClient.MouseDown += new MouseEventHandler(vncClient_MouseDown);
//this.m_vncClient.KeyDown += new KeyEventHandler(vncClient_KeyDown);
m_vncClient.KeyHandler = new ConsoleKeyHandler();
this.m_vncClient.Unpause();
foreach (Set <Keys> keys in extraCodes.Keys)
{
m_vncClient.KeyHandler.AddKeyHandler(keys, extraCodes[keys]);
}
foreach (Set <int> keys in extraScans.Keys)
{
m_vncClient.KeyHandler.AddKeyHandler(keys, extraScans[keys]);
}
}
