org.springframework.web.socket

Interface WebSocketSession

All Superinterfaces:

AutoCloseable, Closeable

All Known Subinterfaces:

NativeWebSocketSession, SockJsSession

All Known Implementing Classes:

AbstractClientSockJsSession, AbstractHttpSockJsSession, AbstractSockJsSession, AbstractWebSocketSession, ConcurrentWebSocketSessionDecorator, JettyWebSocketSession, PollingSockJsSession, StandardWebSocketSession, StreamingSockJsSession, WebSocketClientSockJsSession, WebSocketServerSockJsSession, WebSocketSessionDecorator, XhrClientSockJsSession

public interface WebSocketSession
extends Closeable

A WebSocket session abstraction. Allows sending messages over a WebSocket connection and closing it.

Since:

4.0

Author:

Rossen Stoyanchev

Method Summary

Modifier and Type	Method and Description
void	close() Close the WebSocket connection with status 1000, i.e.
void	close(CloseStatus status) Close the WebSocket connection with the given close status.
String	getAcceptedProtocol() Return the negotiated sub-protocol or null if none was specified or negotiated successfully.
Map<String,Object>	getAttributes() Return the map with attributes associated with the WebSocket session.
int	getBinaryMessageSizeLimit() Get the configured maximum size for an incoming binary message.
List<WebSocketExtension>	getExtensions() Return the negotiated extensions or null if none was specified or negotiated successfully.
HttpHeaders	getHandshakeHeaders() Return the headers used in the handshake request.
String	getId() Return a unique session identifier.
InetSocketAddress	getLocalAddress() Return the address on which the request was received.
Principal	getPrincipal() Return a Principal instance containing the name of the authenticated user.
InetSocketAddress	getRemoteAddress() Return the address of the remote client.
int	getTextMessageSizeLimit() Get the configured maximum size for an incoming text message.
URI	getUri() Return the URI used to open the WebSocket connection.
boolean	isOpen() Return whether the connection is still open.
void	sendMessage(WebSocketMessage<?> message) Send a WebSocket message: either TextMessage or BinaryMessage.
void	setBinaryMessageSizeLimit(int messageSizeLimit) Configure the maximum size for an incoming binary message.
void	setTextMessageSizeLimit(int messageSizeLimit) Configure the maximum size for an incoming text message.

Method Detail

getId

String getId()

Return a unique session identifier.

getUri

URI getUri()

Return the URI used to open the WebSocket connection.

getHandshakeHeaders

HttpHeaders getHandshakeHeaders()

Return the headers used in the handshake request.

getAttributes

Map<String,Object> getAttributes()

Return the map with attributes associated with the WebSocket session.

When the WebSocketSession is created, on the server side, the map can be through a HandshakeInterceptor. On the client side, the map can be populated by passing attributes to the WebSocketClient handshake methods.

getPrincipal

Principal getPrincipal()

Return a Principal instance containing the name of the authenticated user.

If the user has not been authenticated, the method returns null.

getLocalAddress

InetSocketAddress getLocalAddress()

Return the address on which the request was received.

getRemoteAddress

InetSocketAddress getRemoteAddress()

Return the address of the remote client.

getAcceptedProtocol

String getAcceptedProtocol()

Return the negotiated sub-protocol or null if none was specified or negotiated successfully.

setTextMessageSizeLimit

void setTextMessageSizeLimit(int messageSizeLimit)

Configure the maximum size for an incoming text message.

getTextMessageSizeLimit

int getTextMessageSizeLimit()

Get the configured maximum size for an incoming text message.

setBinaryMessageSizeLimit

void setBinaryMessageSizeLimit(int messageSizeLimit)

Configure the maximum size for an incoming binary message.

getBinaryMessageSizeLimit

int getBinaryMessageSizeLimit()

Get the configured maximum size for an incoming binary message.

getExtensions

List<WebSocketExtension> getExtensions()

Return the negotiated extensions or null if none was specified or negotiated successfully.

sendMessage

void sendMessage(WebSocketMessage<?> message)
          throws IOException

Send a WebSocket message: either TextMessage or BinaryMessage.

Throws:

IOException

isOpen

boolean isOpen()

Return whether the connection is still open.

close

void close()
    throws IOException

Close the WebSocket connection with status 1000, i.e. equivalent to:

 session.close(CloseStatus.NORMAL);
 

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException

close

void close(CloseStatus status)
    throws IOException

Close the WebSocket connection with the given close status.

Throws:

IOException