com.codeminders.socketio.server.transport.AbstractTransport Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of socket-io Show documentation
Socket.IO server classes
There is a newer version: 1.0.10
/**
 * The MIT License
 * Copyright (c) 2015 Alexander Sova ([email protected])
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 

 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.codeminders.socketio.server.transport;

import com.codeminders.socketio.protocol.EngineIOProtocol;
import com.codeminders.socketio.server.*;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

/**
 * @author Alexander Sova ([email protected])
 * @author Mathieu Carbou
 */
public abstract class AbstractTransport implements Transport
{
    private Config config;

    @Override
    public void destroy()
    {
    }

    @Override
    public void init(ServletConfig config, ServletContext context)
            throws ServletException
    {
        this.config = new ServletBasedConfig(config, getType().toString());
    }

    protected final Config getConfig()
    {
        return config;
    }

    protected final TransportConnection createConnection(Session session)
    {
        TransportConnection connection = createConnection();
        connection.setSession(session);
        connection.init(getConfig());
        return connection;
    }

    protected TransportConnection getConnection(HttpServletRequest request, SocketIOManager sessionManager)
    {
        String sessionId = request.getParameter(EngineIOProtocol.SESSION_ID);
        Session session = null;

        if(sessionId != null && sessionId.length() > 0)
            session = sessionManager.getSession(sessionId);

        if(session == null)
            return createConnection(sessionManager.createSession(request.getSession()));

        TransportConnection activeConnection = session.getConnection();

        if(activeConnection != null && activeConnection.getTransport() == this)
            return activeConnection;

        // this is new connection considered for an upgrade
        return createConnection(session);
    }

    @Override
    public String toString()
    {
        return getType().toString();
    }

}