Package tigase.server.websocket

Interface WebSocketProtocolIfc

All Known Implementing Classes:

WebSocketHixie76, WebSocketHybi

public interface WebSocketProtocolIfc

Interface which needs to be implemented by any implemention of version of WebSocket protocol.
Currently we have stable version but there were older not compatible with current so it may be that new will come in future - also not compatible.

Author:

andrzej

Field Summary

Fields

Modifier and Type	Field	Description
static final String	WS_PROTOCOL_KEY	HTTP header which contains name of subprotocol which should be used over established WebSocket connection
static final String	WS_VERSION_KEY	HTTP header used by WebSocket to pass used version of WebSocket protocol from client to server

Method Summary

Modifier and Type	Method	Description
void	closeConnection(WebSocketXMPPIOService service)	Method closes connection by sending close frame
ByteBuffer	decodeFrame(WebSocketXMPPIOService service, ByteBuffer buf)	Method responsible for decoding data received from socket and returning data after extracting it from WebSocket frame.
void	encodeFrameAndWrite(WebSocketXMPPIOService service, ByteBuffer buf)	Method encodes data into WebSocket frame and writes it to passed service
String	getId()	Method to retrieve string identifier of implementation of protcol version
boolean	handshake(WebSocketXMPPIOService service, Map<String,String> headers, byte[] buf)	Method responsible for handshaking of WebSocket using proper version of protocol.

Field Details

WS_VERSION_KEY

static final String WS_VERSION_KEY

HTTP header used by WebSocket to pass used version of WebSocket protocol from client to server

See Also:

• Constant Field Values

WS_PROTOCOL_KEY

static final String WS_PROTOCOL_KEY

HTTP header which contains name of subprotocol which should be used over established WebSocket connection

See Also:

• Constant Field Values

Method Details

getId

String getId()

Method to retrieve string identifier of implementation of protcol version

handshake

boolean handshake(WebSocketXMPPIOService service,
 Map<String,String> headers,
 byte[] buf)
           throws NoSuchAlgorithmException,
IOException

Method responsible for handshaking of WebSocket using proper version of protocol.

Returns:

false - if implementation is not able to handshake using this version of protocol, in other case return true

Throws:

NoSuchAlgorithmException

IOException

decodeFrame

ByteBuffer decodeFrame(WebSocketXMPPIOService service,
 ByteBuffer buf)

Method responsible for decoding data received from socket and returning data after extracting it from WebSocket frame.

Returns:

decoded data or null if not full frame is available in input buffer

encodeFrameAndWrite

void encodeFrameAndWrite(WebSocketXMPPIOService service,
 ByteBuffer buf)
                  throws IOException

Method encodes data into WebSocket frame and writes it to passed service

Throws:

IOException

closeConnection

void closeConnection(WebSocketXMPPIOService service)

Method closes connection by sending close frame