C# Class VncSharpWpf.VncClient

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Public Methods

Method	Description
Authenticate ( string password ) : bool	Use a password to authenticate with a VNC Host. NOTE: This is only necessary if Connect() returns TRUE.
Connect ( string host ) : bool	Connect to a VNC Host and determine which type of Authentication it uses. If the host uses Password Authentication, a call to Authenticate() will be required. Default Display and Port numbers are used.
Connect ( string host, int display ) : bool	Connect to a VNC Host and determine which type of Authentication it uses. If the host uses Password Authentication, a call to Authenticate() will be required. The Port number is calculated based on the Display.
Connect ( string host, int display, int port ) : bool
Connect ( string host, int display, int port, bool viewOnly ) : bool	Connect to a VNC Host and determine which type of Authentication it uses. If the host uses Password Authentication, a call to Authenticate() will be required.
Disconnect ( ) : void	Stops sending requests for updates and disconnects from the remote host. You must call Connect() again if you wish to re-establish a connection.
Initialize ( ) : void	Finish setting-up protocol with VNC Host. Should be called after Connect and Authenticate (if password required).
Listen ( string host, int port, bool viewOnly ) : void	Wait for a connection from VNC Server.
RequestScreenUpdate ( bool refreshFullScreen ) : void	Requests that the remote host send a screen update. RequestScreenUpdate needs to be called whenever the client screen needs to be updated to reflect the state of the remote desktop. Typically you only need to have a particular region of the screen updated and can still use the rest of the pixels on the client-side (i.e., when moving the mouse pointer, only the area around the pointer changes). Therefore, you should almost always set refreshFullScreen to FALSE. If the client-side image becomes corrupted, call RequestScreenUpdate with refreshFullScreen set to TRUE to get the complete image sent again.
SetInputMode ( bool viewOnly ) : void	Changes the input mode to view-only or interactive.
StartUpdates ( ) : void	Begin getting updates from the VNC Server. This will continue until StopUpdates() is called. NOTE: this must be called after Connect().
StopListen ( ) : void
VncClient ( ) : System
WriteClientCutText ( string text ) : void
WriteKeyboardEvent ( uint keysym, bool pressed ) : void
WritePointerEvent ( byte buttonMask, Point point ) : void

Protected Methods

Method	Description
EncryptChallenge ( string password, byte challenge ) : byte[]	Encrypts a challenge using the specified password. See RFB Protocol Document v. 3.8 section 6.2.2.
GetSupportedSecurityType ( byte types ) : byte	Examines a list of Security Types supported by a VNC Server and chooses one that the Client supports. See 6.1.2 of the RFB Protocol document v. 3.8.
OnConnectionLost ( ) : void
OnServerCutText ( ) : void
PerformVncAuthentication ( string password ) : void	Performs VNC Authentication using VNC DES encryption. See the RFB Protocol doc 6.2.2.

Private Methods

Method	Description
Beep ( int freq, int duration ) : bool
CheckIfThreadDone ( ) : bool
ConnectCore ( string host, int display, int &port, bool viewOnly, bool connectFromClient ) : bool	Main Function for Connect Process.
ConnectedFromServerEventHandler ( object sender, EventArgs e ) : void	EventHandler for event "ConnectedFromServer"
DoHandShake ( ) : bool
FailedToListenHandler ( object sender, EventArgs e ) : void	EventHandler for event "FailedToListen"
GetRfbUpdates ( ) : void	Worker thread lives here and processes protocol messages infinitely, triggering events or other actions as necessary.

Method Details

Authenticate() public method

Use a password to authenticate with a VNC Host. NOTE: This is only necessary if Connect() returns TRUE.

public Authenticate ( string password ) : bool
password	string	The password to use.
return	bool

Connect() public method

Connect to a VNC Host and determine which type of Authentication it uses. If the host uses Password Authentication, a call to Authenticate() will be required. Default Display and Port numbers are used.

public Connect ( string host ) : bool
host	string	The IP Address or Host Name of the VNC Host.
return	bool

Connect() public method

Connect to a VNC Host and determine which type of Authentication it uses. If the host uses Password Authentication, a call to Authenticate() will be required. The Port number is calculated based on the Display.

public Connect ( string host, int display ) : bool
host	string	The IP Address or Host Name of the VNC Host.
display	int	The Display number (used on Unix hosts).
return	bool

Connect() public method

public Connect ( string host, int display, int port ) : bool
host	string
display	int
port	int
return	bool

Connect() public method

Connect to a VNC Host and determine which type of Authentication it uses. If the host uses Password Authentication, a call to Authenticate() will be required.

public Connect ( string host, int display, int port, bool viewOnly ) : bool
host	string	The IP Address or Host Name of the VNC Host.
display	int	The Display number (used on Unix hosts).
port	int	The Port number used by the Host, usually 5900.
viewOnly	bool	True if mouse/keyboard events are to be ignored.
return	bool

Disconnect() public method

Stops sending requests for updates and disconnects from the remote host. You must call Connect() again if you wish to re-establish a connection.

public Disconnect ( ) : void
return	void

EncryptChallenge() protected method

Encrypts a challenge using the specified password. See RFB Protocol Document v. 3.8 section 6.2.2.

protected EncryptChallenge ( string password, byte challenge ) : byte[]
password	string	The user's password.
challenge	byte	The challenge sent by the server.
return	byte[]

GetSupportedSecurityType() protected method

Examines a list of Security Types supported by a VNC Server and chooses one that the Client supports. See 6.1.2 of the RFB Protocol document v. 3.8.

protected GetSupportedSecurityType ( byte types ) : byte
types	byte	An array of bytes representing the Security Types supported by the VNC Server.
return	byte

Initialize() public method

Finish setting-up protocol with VNC Host. Should be called after Connect and Authenticate (if password required).

public Initialize ( ) : void
return	void

Listen() public method

Wait for a connection from VNC Server.

public Listen ( string host, int port, bool viewOnly ) : void
host	string
port	int
viewOnly	bool
return	void

OnConnectionLost() protected method

protected OnConnectionLost ( ) : void
return	void

OnServerCutText() protected method

protected OnServerCutText ( ) : void
return	void

PerformVncAuthentication() protected method

Performs VNC Authentication using VNC DES encryption. See the RFB Protocol doc 6.2.2.

protected PerformVncAuthentication ( string password ) : void
password	string	A string containing the user's password in clear text format.
return	void

RequestScreenUpdate() public method

Requests that the remote host send a screen update.

RequestScreenUpdate needs to be called whenever the client screen needs to be updated to reflect the state of the remote desktop. Typically you only need to have a particular region of the screen updated and can still use the rest of the pixels on the client-side (i.e., when moving the mouse pointer, only the area around the pointer changes). Therefore, you should almost always set refreshFullScreen to FALSE. If the client-side image becomes corrupted, call RequestScreenUpdate with refreshFullScreen set to TRUE to get the complete image sent again.

public RequestScreenUpdate ( bool refreshFullScreen ) : void
refreshFullScreen	bool	TRUE if the entire screen should be refreshed, FALSE if only a partial region needs updating.
return	void

SetInputMode() public method

Changes the input mode to view-only or interactive.

public SetInputMode ( bool viewOnly ) : void
viewOnly	bool	True if view-only mode is desired (no mouse/keyboard events will be sent).
return	void

StartUpdates() public method

Begin getting updates from the VNC Server. This will continue until StopUpdates() is called. NOTE: this must be called after Connect().

public StartUpdates ( ) : void
return	void

StopListen() public method

public StopListen ( ) : void
return	void

VncClient() public method

public VncClient ( ) : System
return	System

WriteClientCutText() public method

public WriteClientCutText ( string text ) : void
text	string
return	void

WriteKeyboardEvent() public method

public WriteKeyboardEvent ( uint keysym, bool pressed ) : void
keysym	uint
pressed	bool
return	void

WritePointerEvent() public method

public WritePointerEvent ( byte buttonMask, Point point ) : void
buttonMask	byte
point	Point
return	void