org.red5.server.net.servlet.AMFTunnelServlet.java Source code

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Here is the source code for org.red5.server.net.servlet.AMFTunnelServlet.java

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package org.red5.server.net.servlet;

/*
 * RED5 Open Source Flash Server - http://www.osflash.org/red5
 * 
 * Copyright (c) 2006-2007 by respective authors (see below). All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU Lesser General Public License as published by the Free Software 
 * Foundation; either version 2.1 of the License, or (at your option) any later 
 * version. 
 * 
 * This library is distributed in the hope that it will be useful, but WITHOUT ANY 
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
 * PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License along 
 * with this library; if not, write to the Free Software Foundation, Inc., 
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.MultiThreadedHttpConnectionManager;
import org.apache.commons.httpclient.methods.InputStreamRequestEntity;
import org.apache.commons.httpclient.methods.PostMethod;
import org.apache.mina.common.ByteBuffer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Servlet to tunnel to the AMF gateway servlet.
 * 
 * @author The Red5 Project (red5@osflash.org)
 * @author Paul Gregoire (mondain@gmail.com)
 */
public class AMFTunnelServlet extends HttpServlet {

    /**
     * Serialization UID
     */
    private static final long serialVersionUID = -35436145164322090L;

    protected static Logger logger = LoggerFactory.getLogger(AMFTunnelServlet.class);

    /**
     * Redirect to HTTP port.
     */
    @Override
    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        HttpClient client = new HttpClient(new MultiThreadedHttpConnectionManager());
        client.getHttpConnectionManager().getParams().setConnectionTimeout(30000);
        PostMethod get = new PostMethod("http://localhost:8080/gateway");

        try {
            // copy all the headers
            // Enumeration headerNames = req.getHeaderNames();
            // while (headerNames.hasMoreElements()) {
            // String headerName = (String) headerNames.nextElement();
            // logger.debug("Adding received header to tunnel request: "
            // + headerName);
            // get.addRequestHeader(headerName, req.getHeader(headerName));
            // }
            // Enumeration parameterNames = req.getParameterNames();
            // while (parameterNames.hasMoreElements()) {
            // String parameterName = (String) parameterNames.nextElement();
            // logger.debug("Adding received parameter to tunnel request: "
            // + parameterName);
            // get.getParams().setParameter(parameterName,
            // req.getParameter(parameterName));
            // }
            // Enumeration attributeNames = req.getAttributeNames();
            // while (attributeNames.hasMoreElements()) {
            // String attributeName = (String) attributeNames.nextElement();
            // logger.debug("Adding received attribute to tunnel request: "
            // + attributeName);
            // }

            String path = req.getContextPath();
            if (path == null) {
                path = "";
            }
            // System.out.println("Path: " + path);
            if (req.getPathInfo() != null) {
                path += req.getPathInfo();
            }
            // System.out.println("Path: " + path);

            int reqContentLength = req.getContentLength();
            if (reqContentLength > 0) {
                // System.out.println("Request content length: " +
                // reqContentLength);

                ByteBuffer reqBuffer = ByteBuffer.allocate(reqContentLength);
                ServletUtils.copy(req.getInputStream(), reqBuffer.asOutputStream());
                reqBuffer.flip();
                get.setRequestEntity(new InputStreamRequestEntity(reqBuffer.asInputStream(), reqContentLength,
                        "application/x-amf"));
                // get.setPath(path);
                get.addRequestHeader("Tunnel-request", path);

                client.executeMethod(get);
                // System.out.println("Response code: " + get.getStatusCode());

                if (get.getStatusCode() == HttpStatus.SC_OK) {
                    resp.setContentType("application/x-amf");
                    int responseLength = ((Long) get.getResponseContentLength()).intValue();
                    ByteBuffer respBuffer = ByteBuffer.allocate(responseLength);
                    ServletUtils.copy(get.getResponseBodyAsStream(), respBuffer.asOutputStream());
                    respBuffer.flip();
                    ServletUtils.copy(respBuffer.asInputStream(), resp.getOutputStream());
                    resp.flushBuffer();
                } else {
                    resp.sendError(get.getStatusCode());
                }

            } else {
                resp.sendError(HttpStatus.SC_BAD_REQUEST);
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        } finally {
            get.releaseConnection();
        }
    }
}