| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 org.apache.asyncweb.common.codec; |
| |
| import java.nio.charset.CharacterCodingException; |
| import java.nio.charset.CharsetEncoder; |
| |
| import org.apache.asyncweb.common.HttpResponse; |
| import org.apache.asyncweb.common.HttpResponseStatus; |
| import org.apache.mina.core.buffer.IoBuffer; |
| import org.apache.mina.core.session.IoSession; |
| import org.apache.mina.filter.codec.ProtocolEncoder; |
| import org.apache.mina.filter.codec.ProtocolEncoderOutput; |
| |
| /** |
| * |
| * @author The Apache MINA Project (dev@mina.apache.org) |
| * @version $Rev$, $Date$ |
| */ |
| public class HttpResponseEncoder implements ProtocolEncoder { |
| |
| private final CharsetEncoder asciiEncoder = HttpCodecUtils.US_ASCII_CHARSET.newEncoder(); |
| |
| public void encode(IoSession session, Object message, |
| ProtocolEncoderOutput out) throws Exception { |
| asciiEncoder.reset(); |
| HttpResponse response = (HttpResponse) message; |
| IoBuffer buffer = IoBuffer.allocate(512); |
| buffer.setAutoExpand(true); |
| |
| encodeStatusLine(response, buffer); |
| HttpCodecUtils.encodeHeaders(response, buffer, asciiEncoder); |
| HttpCodecUtils.encodeBody(response, buffer); |
| |
| buffer.flip(); |
| out.write(buffer); |
| } |
| |
| public void dispose(IoSession session) throws Exception { |
| } |
| |
| /** |
| * Encodes the status line of a <code>Response</code> to a specified |
| * buffer. |
| * The status line takes the form:<br/> |
| * <pre> |
| * HTTP-Version SP Status-Code SP Reason-Phrase CRLF |
| * </pre> |
| * |
| * @param response The response |
| * @param buffer The buffer |
| * @throws CharacterCodingException |
| */ |
| private void encodeStatusLine(HttpResponse response, IoBuffer buffer) |
| throws CharacterCodingException { |
| // Write protocol version. |
| buffer.putString( |
| response.getProtocolVersion().toString(), asciiEncoder); |
| buffer.put((byte) ' '); |
| |
| // Write status code. |
| HttpResponseStatus status = response.getStatus(); |
| // TODO: Cached buffers for response codes / descriptions? |
| HttpCodecUtils.appendString(buffer, String.valueOf(status.getCode())); |
| buffer.put((byte) ' '); |
| |
| // Write reason phrase. |
| HttpCodecUtils.appendString(buffer, response.getStatusReasonPhrase()); |
| HttpCodecUtils.appendCRLF(buffer); |
| } |
| } |