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.HttpRequest;
033import org.slf4j.Logger;
034import org.slf4j.LoggerFactory;
035
036public class HttpClientEncoder implements ProtocolEncoder {
037    private static final Logger LOG = LoggerFactory.getLogger(HttpClientCodec.class);
038    private static final CharsetEncoder ENCODER = Charset.forName("UTF-8").newEncoder();
039
040    public void encode(IoSession session, Object message, ProtocolEncoderOutput out)
041            throws Exception {
042        LOG.debug("encode {}", message.getClass().getCanonicalName());
043        if (message instanceof HttpRequest) {
044            LOG.debug("HttpRequest");
045            HttpRequest msg = (HttpRequest)message;
046            StringBuilder sb = new StringBuilder(msg.getMethod().toString());
047            sb.append(" ");
048            sb.append(msg.getRequestPath());
049            if (!"".equals(msg.getQueryString())) {
050                sb.append("?");
051                sb.append(msg.getQueryString());
052            }
053            sb.append(" ");
054            sb.append(msg.getProtocolVersion());
055            sb.append("\r\n");
056
057            for (Map.Entry<String, String> header : msg.getHeaders().entrySet()) {
058                sb.append(header.getKey());
059                sb.append(": ");
060                sb.append(header.getValue());
061                sb.append("\r\n");
062            }
063            sb.append("\r\n");
064            // Java 6 >> byte[] bytes = sb.toString().getBytes(Charset.forName("UTF-8"));
065            // byte[] bytes = sb.toString().getBytes();
066            // out.write(ByteBuffer.wrap(bytes));
067            IoBuffer buf = IoBuffer.allocate(sb.length()).setAutoExpand(true);
068            buf.putString(sb.toString(), ENCODER);
069            buf.flip();
070            out.write(buf);
071        } else if (message instanceof ByteBuffer) {
072            LOG.debug("Body");
073            out.write(message);
074        } else if (message instanceof HttpEndOfContent) {
075            LOG.debug("End of Content");
076            // end of HTTP content
077            // keep alive ?
078        }
079
080    }
081
082    public void dispose(IoSession arg0) throws Exception {
083        // TODO Auto-generated method stub
084
085    }
086
087}