WebSocketHttpResponseDecoder.java

//
// Copyright 2011 Cinch Logic Pty Ltd.
//
// http://www.chililog.com
//
// Licensed 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.chililog.client.websocket;

import org.jboss.netty.handler.codec.http.HttpMessage;
import org.jboss.netty.handler.codec.http.HttpResponse;
import org.jboss.netty.handler.codec.http.HttpResponseDecoder;

/**
 * Fix bug in standard HttpResponseDecoder for web socket clients. When status 101 is received for Hybi00, there is 16
 * bytes of contents expected
 * 
 * @author vibul
 */
public class WebSocketHttpResponseDecoder extends HttpResponseDecoder {

    @Override
    protected boolean isContentAlwaysEmpty(HttpMessage msg) {
        if (msg instanceof HttpResponse) {
            HttpResponse res = (HttpResponse) msg;
            int code = res.getStatus().getCode();

            // FIX force reading of protocol upgrade challenge data into the content buffer
            if (code == 101) {
                return false;
            }

            if (code < 200) {
                return true;
            }
            switch (code) {
                case 204:
                case 205:
                case 304:
                    return true;
            }
        }
        return false;
    }
}