Package org.springframework.web.socket.client.jetty

Class JettyWebSocketClient

java.lang.Object

org.springframework.web.socket.client.AbstractWebSocketClient

org.springframework.web.socket.client.jetty.JettyWebSocketClient

All Implemented Interfaces:

org.springframework.context.Lifecycle, WebSocketClient

public class JettyWebSocketClient
extends AbstractWebSocketClient
implements org.springframework.context.Lifecycle

Initiates WebSocket requests to a WebSocket server programmatically through the Jetty WebSocket API.

As of 4.1 this class implements Lifecycle rather than SmartLifecycle. Use WebSocketConnectionManager instead to auto-start a WebSocket connection.

Since:

4.0

Author:

Rossen Stoyanchev, Juergen Hoeller

Field Summary

Fields inherited from class org.springframework.web.socket.client.AbstractWebSocketClient

logger

Constructor Summary

Constructors

Constructor	Description
JettyWebSocketClient()	Default constructor that creates an instance of WebSocketClient.
JettyWebSocketClient(org.eclipse.jetty.websocket.client.WebSocketClient client)	Constructor that accepts an existing WebSocketClient instance.

Method Summary

Modifier and Type	Method	Description
org.springframework.util.concurrent.ListenableFuture<WebSocketSession>	doHandshake(WebSocketHandler webSocketHandler, String uriTemplate, Object... uriVars)
org.springframework.util.concurrent.ListenableFuture<WebSocketSession>	doHandshakeInternal(WebSocketHandler wsHandler, org.springframework.http.HttpHeaders headers, URI uri, List<String> protocols, List<WebSocketExtension> extensions, Map<String,Object> attributes)	Perform the actual handshake to establish a connection to the server.
org.springframework.core.task.AsyncListenableTaskExecutor	getTaskExecutor()	Return the configured TaskExecutor.
protected Principal	getUser()	Return the user to make available through WebSocketSession.getPrincipal().
boolean	isRunning()
void	setTaskExecutor(org.springframework.core.task.AsyncListenableTaskExecutor taskExecutor)	Set an AsyncListenableTaskExecutor to use when opening connections.
void	start()
void	stop()

Methods inherited from class org.springframework.web.socket.client.AbstractWebSocketClient

assertUri, doHandshake

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JettyWebSocketClient

public JettyWebSocketClient()

Default constructor that creates an instance of WebSocketClient.

JettyWebSocketClient

public JettyWebSocketClient(org.eclipse.jetty.websocket.client.WebSocketClient client)

Constructor that accepts an existing WebSocketClient instance.

Method Details

setTaskExecutor

public void setTaskExecutor(@Nullable
 org.springframework.core.task.AsyncListenableTaskExecutor taskExecutor)

Set an AsyncListenableTaskExecutor to use when opening connections. If this property is set to null, calls to any of the doHandshake methods will block until the connection is established.

By default an instance of SimpleAsyncTaskExecutor is used.

getTaskExecutor

@Nullable
public org.springframework.core.task.AsyncListenableTaskExecutor getTaskExecutor()

Return the configured TaskExecutor.

start

public void start()

Specified by:

start in interface org.springframework.context.Lifecycle

stop

public void stop()

Specified by:

stop in interface org.springframework.context.Lifecycle

isRunning

public boolean isRunning()

Specified by:

isRunning in interface org.springframework.context.Lifecycle

doHandshake

public org.springframework.util.concurrent.ListenableFuture<WebSocketSession> doHandshake(WebSocketHandler webSocketHandler,
 String uriTemplate,
 Object... uriVars)

Specified by:

doHandshake in interface WebSocketClient

Overrides:

doHandshake in class AbstractWebSocketClient

doHandshakeInternal

public org.springframework.util.concurrent.ListenableFuture<WebSocketSession> doHandshakeInternal(WebSocketHandler wsHandler,
 org.springframework.http.HttpHeaders headers,
 URI uri,
 List<String> protocols,
 List<WebSocketExtension> extensions,
 Map<String,Object> attributes)

Description copied from class: AbstractWebSocketClient

Perform the actual handshake to establish a connection to the server.

Specified by:

doHandshakeInternal in class AbstractWebSocketClient

Parameters:

wsHandler - the client-side handler for WebSocket messages

headers - the HTTP headers to use for the handshake, with unwanted (forbidden) headers filtered out (never null)

uri - the target URI for the handshake (never null)

protocols - requested sub-protocols, or an empty list

extensions - requested WebSocket extensions, or an empty list

attributes - the attributes to associate with the WebSocketSession, i.e. via WebSocketSession.getAttributes(); currently always an empty map.

Returns:

the established WebSocket session wrapped in a ListenableFuture.

getUser

@Nullable
protected Principal getUser()

Return the user to make available through WebSocketSession.getPrincipal(). By default this method returns null