/*******************************************************************************
* Copyright (c) 2012 Michael Mimo Moratti.
*
* Michael Mimo Moratti licenses this file to you under the Apache License, version 2.0
* (the "License"); you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*******************************************************************************/
package ch.mimo.netty.example.icap.simple;
import java.nio.charset.Charset;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
import org.jboss.netty.handler.codec.http.HttpHeaders;
import ch.mimo.netty.handler.codec.icap.DefaultIcapResponse;
import ch.mimo.netty.handler.codec.icap.IcapHeaders;
import ch.mimo.netty.handler.codec.icap.IcapMessageElementEnum;
import ch.mimo.netty.handler.codec.icap.IcapMethod;
import ch.mimo.netty.handler.codec.icap.IcapRequest;
import ch.mimo.netty.handler.codec.icap.IcapResponse;
import ch.mimo.netty.handler.codec.icap.IcapResponseStatus;
import ch.mimo.netty.handler.codec.icap.IcapVersion;
public class IcapServerHandler extends SimpleChannelUpstreamHandler {
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
IcapRequest request = (IcapRequest)e.getMessage();
System.out.println(request.toString());
IcapResponse response = new DefaultIcapResponse(IcapVersion.ICAP_1_0,IcapResponseStatus.OK);
IcapMessageElementEnum bodyType = request.getBodyType();
if(bodyType == null) {
bodyType = IcapMessageElementEnum.NULLBODY;
}
if(!request.getMethod().equals(IcapMethod.RESPMOD) & request.getHttpRequest() != null) {
request.getHttpRequest().addHeader(HttpHeaders.Names.VIA,"icap://my.icap.server");
response.setHttpRequest(request.getHttpRequest());
}
if(request.getHttpResponse() != null) {
request.getHttpResponse().addHeader(HttpHeaders.Names.VIA,"icap://my.icap.server");
response.setHttpResponse(request.getHttpResponse());
}
response.addHeader(IcapHeaders.Names.ISTAG,"SimpleServer-version-1.0");
ChannelBuffer buffer = null;
switch (bodyType) {
case NULLBODY:
// No body in request
break;
case REQBODY:
// http request body in request
buffer = request.getHttpRequest().getContent();
break;
case RESBODY:
// http response body in request
buffer = request.getHttpResponse().getContent();
break;
default:
// cannot reach here.
break;
}
/*
* There is also a convenience method that extracts a body from any http message.
* @See IcapChunkAggregator#extractHttpBodyContentFromIcapMessage(IcapMessage message).
*/
if(buffer != null) {
System.out.println(buffer.toString(Charset.defaultCharset()));
}
ctx.getChannel().write(response);
}
}