001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *  
010 *    http://www.apache.org/licenses/LICENSE-2.0
011 *  
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License. 
018 *  
019 */
020package org.apache.mina.http;
021
022import java.nio.ByteBuffer;
023import java.nio.charset.Charset;
024import java.nio.charset.CharsetEncoder;
025import java.util.Map;
026
027import org.apache.mina.core.buffer.IoBuffer;
028import org.apache.mina.core.session.IoSession;
029import org.apache.mina.filter.codec.ProtocolEncoder;
030import org.apache.mina.filter.codec.ProtocolEncoderOutput;
031import org.apache.mina.http.api.HttpEndOfContent;
032import org.apache.mina.http.api.HttpResponse;
033import org.slf4j.Logger;
034import org.slf4j.LoggerFactory;
035
036public class HttpServerEncoder implements ProtocolEncoder {
037    private static final Logger LOG = LoggerFactory.getLogger(HttpServerCodec.class);
038    private static final CharsetEncoder ENCODER = Charset.forName("UTF-8").newEncoder();
039
040    public void encode(IoSession session, Object message, ProtocolEncoderOutput out) throws Exception {
041        LOG.debug("encode {}", message.getClass().getCanonicalName());
042        if (message instanceof HttpResponse) {
043                LOG.debug("HttpResponse");
044            HttpResponse msg = (HttpResponse) message;
045            StringBuilder sb = new StringBuilder(msg.getStatus().line());
046
047            for (Map.Entry<String, String> header : msg.getHeaders().entrySet()) {
048                sb.append(header.getKey());
049                sb.append(": ");
050                sb.append(header.getValue());
051                sb.append("\r\n");
052            }
053            sb.append("\r\n");
054            IoBuffer buf = IoBuffer.allocate(sb.length()).setAutoExpand(true);
055            buf.putString(sb.toString(), ENCODER);
056            buf.flip();
057            out.write(buf);
058        } else if (message instanceof ByteBuffer) {
059                LOG.debug("Body {}", message);
060                out.write(message);
061        } else if (message instanceof HttpEndOfContent) {
062                LOG.debug("End of Content");
063            // end of HTTP content
064            // keep alive ?
065        }
066
067    }
068
069    public void dispose(IoSession session) throws Exception {
070        // TODO Auto-generated method stub
071    }
072}