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//
// ========================================================================
// Copyright (c) 1995-2014 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.jsr356.server;
import java.util.List;
import javax.websocket.Extension;
import javax.websocket.HandshakeResponse;
import javax.websocket.server.HandshakeRequest;
import javax.websocket.server.ServerEndpointConfig;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
import org.eclipse.jetty.websocket.api.util.QuoteUtil;
public class BasicServerEndpointConfigurator extends ServerEndpointConfig.Configurator
{
private static final Logger LOG = Log.getLogger(BasicServerEndpointConfigurator.class);
private static final String NO_SUBPROTOCOL = "";
public static final ServerEndpointConfig.Configurator INSTANCE = new BasicServerEndpointConfigurator();
@Override
public boolean checkOrigin(String originHeaderValue)
{
return true;
}
@Override
public <T> T getEndpointInstance(Class<T> endpointClass) throws InstantiationException
{
if (LOG.isDebugEnabled())
{
LOG.debug(".getEndpointInstance({})",endpointClass);
}
try
{
return endpointClass.newInstance();
}
catch (IllegalAccessException e)
{
throw new InstantiationException(String.format("%s: %s",e.getClass().getName(),e.getMessage()));
}
}
@Override
public List<Extension> getNegotiatedExtensions(List<Extension> installed, List<Extension> requested)
{
return requested;
}
@Override
public String getNegotiatedSubprotocol(List<String> supported, List<String> requested)
{
if ((requested == null) || (requested.size() == 0))
{
// nothing requested, don't return anything
return NO_SUBPROTOCOL;
}
// Nothing specifically called out as being supported by the endpoint
if ((supported == null) || (supported.isEmpty()))
{
// Just return the first hit in this case
LOG.warn("Client requested Subprotocols on endpoint with none supported: {}",QuoteUtil.join(requested,","));
return NO_SUBPROTOCOL;
}
// Return the first matching hit from the list of supported protocols.
for (String possible : requested)
{
if (possible == null)
{
// skip null
continue;
}
if (supported.contains(possible))
{
return possible;
}
}
LOG.warn("Client requested subprotocols {} do not match any endpoint supported subprotocols {}",QuoteUtil.join(requested,","),
QuoteUtil.join(supported,","));
return NO_SUBPROTOCOL;
}
@Override
public void modifyHandshake(ServerEndpointConfig sec, HandshakeRequest request, HandshakeResponse response)
{
/* do nothing */
}
}
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