//
// ========================================================================
// Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.websocket.client;
import java.io.IOException;
import java.net.CookieStore;
import java.net.SocketAddress;
import java.net.URI;
import java.util.Collections;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadLocalRandom;
import org.eclipse.jetty.client.HttpClient;
import org.eclipse.jetty.io.ByteBufferPool;
import org.eclipse.jetty.io.MappedByteBufferPool;
import org.eclipse.jetty.util.DecoratedObjectFactory;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.util.component.ContainerLifeCycle;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.util.ssl.SslContextFactory;
import org.eclipse.jetty.util.thread.QueuedThreadPool;
import org.eclipse.jetty.util.thread.Scheduler;
import org.eclipse.jetty.util.thread.ShutdownThread;
import org.eclipse.jetty.websocket.api.Session;
import org.eclipse.jetty.websocket.api.WebSocketBehavior;
import org.eclipse.jetty.websocket.api.WebSocketPolicy;
import org.eclipse.jetty.websocket.api.extensions.ExtensionConfig;
import org.eclipse.jetty.websocket.api.extensions.ExtensionFactory;
import org.eclipse.jetty.websocket.client.io.ConnectionManager;
import org.eclipse.jetty.websocket.client.io.UpgradeListener;
import org.eclipse.jetty.websocket.client.masks.Masker;
import org.eclipse.jetty.websocket.client.masks.RandomMasker;
import org.eclipse.jetty.websocket.common.SessionFactory;
import org.eclipse.jetty.websocket.common.WebSocketSession;
import org.eclipse.jetty.websocket.common.WebSocketSessionFactory;
import org.eclipse.jetty.websocket.common.events.EventDriverFactory;
import org.eclipse.jetty.websocket.common.extensions.WebSocketExtensionFactory;
import org.eclipse.jetty.websocket.common.scopes.DelegatedContainerScope;
import org.eclipse.jetty.websocket.common.scopes.SimpleContainerScope;
import org.eclipse.jetty.websocket.common.scopes.WebSocketContainerScope;
/**
* WebSocketClient provides a means of establishing connections to remote websocket endpoints.
*/
public class WebSocketClient extends ContainerLifeCycle implements WebSocketContainerScope
{
private static final Logger LOG = Log.getLogger(WebSocketClient.class);
// From HttpClient
private final HttpClient httpClient;
//
private final WebSocketContainerScope containerScope;
private final WebSocketExtensionFactory extensionRegistry;
private final EventDriverFactory eventDriverFactory;
private final SessionFactory sessionFactory;
private final int id = ThreadLocalRandom.current().nextInt();
/**
* Instantiate a WebSocketClient with defaults
*/
public WebSocketClient()
{
// Create synthetic HttpClient
this(new HttpClient());
addBean(this.httpClient);
}
/**
* Instantiate a WebSocketClient using HttpClient for defaults
*
* @param httpClient
* the HttpClient to base internal defaults off of
*/
public WebSocketClient(HttpClient httpClient)
{
this(httpClient,new DecoratedObjectFactory());
}
/**
* Instantiate a WebSocketClient using HttpClient for defaults
*
* @param httpClient
* the HttpClient to base internal defaults off of
* @param objectFactory
* the DecoratedObjectFactory for all client instantiated classes
*/
public WebSocketClient(HttpClient httpClient, DecoratedObjectFactory objectFactory)
{
this.containerScope = new SimpleContainerScope(WebSocketPolicy.newClientPolicy(),new MappedByteBufferPool(),objectFactory);
this.httpClient = httpClient;
this.extensionRegistry = new WebSocketExtensionFactory(containerScope);
this.eventDriverFactory = new EventDriverFactory(containerScope);
this.sessionFactory = new WebSocketSessionFactory(containerScope);
}
/**
* Create a new WebSocketClient
*
* @param executor
* the executor to use
* @deprecated use {@link #WebSocketClient(HttpClient)} instead
*/
@Deprecated
public WebSocketClient(Executor executor)
{
this(null,executor);
}
/**
* Create a new WebSocketClient
*
* @param bufferPool
* byte buffer pool to use
*/
public WebSocketClient(ByteBufferPool bufferPool)
{
this(null,null,bufferPool);
}
/**
* Create a new WebSocketClient
*
* @param sslContextFactory
* ssl context factory to use
*/
public WebSocketClient(SslContextFactory sslContextFactory)
{
this(sslContextFactory,null);
}
/**
* Create a new WebSocketClient
*
* @param sslContextFactory
* ssl context factory to use
* @param executor
* the executor to use
* @deprecated use {@link #WebSocketClient(HttpClient)} instead
*/
@Deprecated
public WebSocketClient(SslContextFactory sslContextFactory, Executor executor)
{
this(sslContextFactory,executor,new MappedByteBufferPool());
}
/**
* Create WebSocketClient other Container Scope, to allow sharing of
* internal features like Executor, ByteBufferPool, SSLContextFactory, etc.
*
* @param scope
* the Container Scope
*/
public WebSocketClient(WebSocketContainerScope scope)
{
this(scope.getSslContextFactory(),scope.getExecutor(),scope.getBufferPool(),scope.getObjectFactory());
}
/**
* Create WebSocketClient other Container Scope, to allow sharing of
* internal features like Executor, ByteBufferPool, SSLContextFactory, etc.
*
* @param scope
* the Container Scope
* @param sslContextFactory
* SSL ContextFactory to use in preference to one from
* {@link WebSocketContainerScope#getSslContextFactory()}
*/
public WebSocketClient(WebSocketContainerScope scope, SslContextFactory sslContextFactory)
{
this(sslContextFactory,scope.getExecutor(),scope.getBufferPool(),scope.getObjectFactory());
}
/**
* Create WebSocketClient using sharing instances of SSLContextFactory
* Executor, and ByteBufferPool
*
* @param sslContextFactory
* shared SSL ContextFactory
* @param executor
* shared Executor
* @param bufferPool
* shared ByteBufferPool
*/
public WebSocketClient(SslContextFactory sslContextFactory, Executor executor, ByteBufferPool bufferPool)
{
this(sslContextFactory,executor,bufferPool,new DecoratedObjectFactory());
}
/**
* Create WebSocketClient using sharing instances of SSLContextFactory
* Executor, and ByteBufferPool
*
* @param sslContextFactory
* shared SSL ContextFactory
* @param executor
* shared Executor
* @param bufferPool
* shared ByteBufferPool
* @param objectFactory
* shared DecoratedObjectFactory
*/
private WebSocketClient(SslContextFactory sslContextFactory, Executor executor, ByteBufferPool bufferPool, DecoratedObjectFactory objectFactory)
{
this.httpClient = new HttpClient(sslContextFactory);
this.httpClient.setExecutor(executor);
this.httpClient.setByteBufferPool(bufferPool);
addBean(this.httpClient);
this.containerScope = new SimpleContainerScope(WebSocketPolicy.newClientPolicy(), bufferPool, objectFactory);
this.extensionRegistry = new WebSocketExtensionFactory(containerScope);
this.eventDriverFactory = new EventDriverFactory(containerScope);
this.sessionFactory = new WebSocketSessionFactory(containerScope);
}
/**
* Create WebSocketClient based on pre-existing Container Scope, to allow sharing of
* internal features like Executor, ByteBufferPool, SSLContextFactory, etc.
*
* @param scope
* the Container Scope
* @param eventDriverFactory
* the EventDriver Factory to use
* @param sessionFactory
* the SessionFactory to use
*/
public WebSocketClient(final WebSocketContainerScope scope, EventDriverFactory eventDriverFactory, SessionFactory sessionFactory)
{
WebSocketContainerScope clientScope;
if (scope.getPolicy().getBehavior() == WebSocketBehavior.CLIENT)
{
clientScope = scope;
}
else
{
// We need to wrap the scope
clientScope = new DelegatedContainerScope(WebSocketPolicy.newClientPolicy(), scope);
}
this.containerScope = clientScope;
SslContextFactory sslContextFactory = scope.getSslContextFactory();
if(sslContextFactory == null)
{
sslContextFactory = new SslContextFactory();
}
this.httpClient = new HttpClient(sslContextFactory);
Executor executor = scope.getExecutor();
if (executor == null)
{
QueuedThreadPool threadPool = new QueuedThreadPool();
String name = "WebSocketClient@" + hashCode();
threadPool.setName(name);
threadPool.setDaemon(true);
executor = threadPool;
}
this.httpClient.setExecutor(executor);
addBean(this.httpClient);
this.extensionRegistry = new WebSocketExtensionFactory(containerScope);
this.eventDriverFactory = eventDriverFactory;
this.sessionFactory = sessionFactory;
}
public Future<Session> connect(Object websocket, URI toUri) throws IOException
{
ClientUpgradeRequest request = new ClientUpgradeRequest(toUri);
request.setRequestURI(toUri);
request.setLocalEndpoint(websocket);
return connect(websocket,toUri,request);
}
/**
* Connect to remote websocket endpoint
*
* @param websocket
* the websocket object
* @param toUri
* the websocket uri to connect to
* @param request
* the upgrade request information
* @return the future for the session, available on success of connect
* @throws IOException
* if unable to connect
*/
public Future<Session> connect(Object websocket, URI toUri, ClientUpgradeRequest request) throws IOException
{
return connect(websocket,toUri,request,(UpgradeListener)null);
}
/**
* Connect to remote websocket endpoint
*
* @param websocket
* the websocket object
* @param toUri
* the websocket uri to connect to
* @param request
* the upgrade request information
* @param upgradeListener
* the upgrade listener
* @return the future for the session, available on success of connect
* @throws IOException
* if unable to connect
*/
public Future<Session> connect(Object websocket, URI toUri, ClientUpgradeRequest request, UpgradeListener upgradeListener) throws IOException
{
/* Note: UpgradeListener is used by javax.websocket.ClientEndpointConfig.Configurator
* See: org.eclipse.jetty.websocket.jsr356.JsrUpgradeListener
*/
if (!isStarted())
{
throw new IllegalStateException(WebSocketClient.class.getSimpleName() + "@" + this.hashCode() + " is not started");
}
// Validate websocket URI
if (!toUri.isAbsolute())
{
throw new IllegalArgumentException("WebSocket URI must be absolute");
}
if (StringUtil.isBlank(toUri.getScheme()))
{
throw new IllegalArgumentException("WebSocket URI must include a scheme");
}
String scheme = toUri.getScheme().toLowerCase(Locale.ENGLISH);
if (("ws".equals(scheme) == false) && ("wss".equals(scheme) == false))
{
throw new IllegalArgumentException("WebSocket URI scheme only supports [ws] and [wss], not [" + scheme + "]");
}
request.setRequestURI(toUri);
request.setLocalEndpoint(websocket);
// Validate Requested Extensions
for (ExtensionConfig reqExt : request.getExtensions())
{
if (!extensionRegistry.isAvailable(reqExt.getName()))
{
throw new IllegalArgumentException("Requested extension [" + reqExt.getName() + "] is not installed");
}
}
if (LOG.isDebugEnabled())
LOG.debug("connect websocket {} to {}",websocket,toUri);
init();
WebSocketUpgradeRequest wsReq = new WebSocketUpgradeRequest(this,httpClient,request);
wsReq.setUpgradeListener(upgradeListener);
return wsReq.sendAsync();
}
@Override
protected void doStop() throws Exception
{
if (LOG.isDebugEnabled())
LOG.debug("Stopping {}",this);
if (ShutdownThread.isRegistered(this))
{
ShutdownThread.deregister(this);
}
super.doStop();
if (LOG.isDebugEnabled())
LOG.debug("Stopped {}",this);
}
@Deprecated
public boolean isDispatchIO()
{
return httpClient.isDispatchIO();
}
/**
* Return the number of milliseconds for a timeout of an attempted write operation.
*
* @return number of milliseconds for timeout of an attempted write operation
*/
public long getAsyncWriteTimeout()
{
return this.containerScope.getPolicy().getAsyncWriteTimeout();
}
public SocketAddress getBindAddress()
{
return httpClient.getBindAddress();
}
public ByteBufferPool getBufferPool()
{
return httpClient.getByteBufferPool();
}
@Deprecated
public ConnectionManager getConnectionManager()
{
throw new UnsupportedOperationException("ConnectionManager is no longer supported");
}
public long getConnectTimeout()
{
return httpClient.getConnectTimeout();
}
public CookieStore getCookieStore()
{
return httpClient.getCookieStore();
}
public EventDriverFactory getEventDriverFactory()
{
return eventDriverFactory;
}
public Executor getExecutor()
{
return httpClient.getExecutor();
}
public ExtensionFactory getExtensionFactory()
{
return extensionRegistry;
}
/**
* @deprecated not used, no replacement
*/
@Deprecated
public Masker getMasker()
{
return new RandomMasker();
}
/**
* Get the maximum size for buffering of a binary message.
*
* @return the maximum size of a binary message buffer.
*/
public int getMaxBinaryMessageBufferSize()
{
return getPolicy().getMaxBinaryMessageBufferSize();
}
/**
* Get the maximum size for a binary message.
*
* @return the maximum size of a binary message.
*/
public long getMaxBinaryMessageSize()
{
return getPolicy().getMaxBinaryMessageSize();
}
/**
* Get the max idle timeout for new connections.
*
* @return the max idle timeout in milliseconds for new connections.
*/
public long getMaxIdleTimeout()
{
return getPolicy().getIdleTimeout();
}
/**
* Get the maximum size for buffering of a text message.
*
* @return the maximum size of a text message buffer.
*/
public int getMaxTextMessageBufferSize()
{
return getPolicy().getMaxTextMessageBufferSize();
}
/**
* Get the maximum size for a text message.
*
* @return the maximum size of a text message.
*/
public long getMaxTextMessageSize()
{
return getPolicy().getMaxTextMessageSize();
}
public DecoratedObjectFactory getObjectFactory()
{
return this.containerScope.getObjectFactory();
}
public Set<WebSocketSession> getOpenSessions()
{
return Collections.unmodifiableSet(new HashSet<>(getBeans(WebSocketSession.class)));
}
public WebSocketPolicy getPolicy()
{
return this.containerScope.getPolicy();
}
public Scheduler getScheduler()
{
return httpClient.getScheduler();
}
public SessionFactory getSessionFactory()
{
return sessionFactory;
}
/**
* @return the {@link SslContextFactory} that manages TLS encryption
* @see #WebSocketClient(SslContextFactory)
*/
public SslContextFactory getSslContextFactory()
{
return httpClient.getSslContextFactory();
}
private synchronized void init() throws IOException
{
if (!ShutdownThread.isRegistered(this))
{
ShutdownThread.register(this);
}
}
/**
* Factory method for new ConnectionManager
*
* @return the ConnectionManager instance to use
* @deprecated use HttpClient instead
*/
@Deprecated
protected ConnectionManager newConnectionManager()
{
throw new UnsupportedOperationException("ConnectionManager is no longer supported");
}
@Override
public void onSessionClosed(WebSocketSession session)
{
if (LOG.isDebugEnabled())
LOG.debug("Session Closed: {}",session);
removeBean(session);
}
@Override
public void onSessionOpened(WebSocketSession session)
{
if (LOG.isDebugEnabled())
LOG.debug("Session Opened: {}",session);
addManaged(session);
LOG.debug("post-onSessionOpened() - {}", this);
}
public void setAsyncWriteTimeout(long ms)
{
getPolicy().setAsyncWriteTimeout(ms);
}
/**
* @param bindAddress
* the address to bind to
* @deprecated (this is a bad bad bad typo) use {@link #setBindAddress(SocketAddress)} instead
*/
@Deprecated
public void setBindAdddress(SocketAddress bindAddress)
{
setBindAddress(bindAddress);
}
public void setBindAddress(SocketAddress bindAddress)
{
this.httpClient.setBindAddress(bindAddress);
}
public void setBufferPool(ByteBufferPool bufferPool)
{
this.httpClient.setByteBufferPool(bufferPool);
}
/**
* Set the timeout for connecting to the remote server.
*
* @param ms
* the timeout in milliseconds
*/
public void setConnectTimeout(long ms)
{
this.httpClient.setConnectTimeout(ms);
}
public void setCookieStore(CookieStore cookieStore)
{
this.httpClient.setCookieStore(cookieStore);
}
/**
* @deprecated not used, configure threading in HttpClient instead
*/
@Deprecated
public void setDaemon(boolean daemon)
{
// do nothing
}
@Deprecated
public void setDispatchIO(boolean dispatchIO)
{
this.httpClient.setDispatchIO(dispatchIO);
}
public void setExecutor(Executor executor)
{
this.httpClient.setExecutor(executor);
}
/**
* @deprecated not used, no replacement
*/
@Deprecated
public void setMasker(Masker masker)
{
/* do nothing */
}
public void setMaxBinaryMessageBufferSize(int max)
{
getPolicy().setMaxBinaryMessageBufferSize(max);
}
/**
* Set the max idle timeout for new connections.
* <p>
* Existing connections will not have their max idle timeout adjusted.
*
* @param ms
* the timeout in milliseconds
*/
public void setMaxIdleTimeout(long ms)
{
getPolicy().setIdleTimeout(ms);
this.httpClient.setIdleTimeout(ms);
}
public void setMaxTextMessageBufferSize(int max)
{
getPolicy().setMaxTextMessageBufferSize(max);
}
@Override
public void dump(Appendable out, String indent) throws IOException
{
dumpThis(out);
dump(out,indent,getOpenSessions());
}
public HttpClient getHttpClient()
{
return this.httpClient;
}
@Override
public String toString()
{
final StringBuilder sb = new StringBuilder("WebSocketClient@");
sb.append(Integer.toHexString(id));
sb.append("[httpClient=").append(httpClient);
sb.append(",openSessions.size=");
sb.append(getOpenSessions().size());
sb.append(']');
return sb.toString();
}
}