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/*
 * RED5 Open Source Media Server - https://github.com/Red5/
 * 
 * Copyright 2006-2016 by respective authors (see below). All rights reserved.
 * 
 * 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.red5.server.api.scope;

import org.red5.server.api.IClient;
import org.red5.server.api.IConnection;
import org.red5.server.api.event.IEventHandler;
import org.red5.server.api.service.IServiceCall;

/**
 * The scope handler controls actions performed against a scope object, and also is notified of all events.
 * 
 * Gives fine grained control over what actions can be performed with the can* methods. Allows for detailed reporting on what is happening within the scope with the on* methods. This is the core interface users implement to create applications.
 * 
 * The thread local connection is always available via the Red5 object within these methods
 * 
 * @author The Red5 Project
 * @author Luke Hubbard ([email protected])
 */
public interface IScopeHandler extends IEventHandler {

    /**
     * Called when a scope is created for the first time.
     * 
     * @param scope
     *            the new scope object
     * @return 
     * true
     * 
* * to allow, * *
     * false
     * 
* * to deny */ boolean start(IScope scope); /** * Called just before a scope is disposed. * * @param scope * Scope that id disposed */ void stop(IScope scope); /** * Called just before every connection to a scope. You can pass additional params from client using * *
     * NetConnection.connect
     * 
* * method (see below). * * @param conn * Connection object * @param params * List of params passed from client via * *
     * NetConnection.connect
     * 
* * method. All parameters but the first one passed to * *
     * NetConnection.connect
     * 
* * method are available as params array. * * * @return
     * true
     * 
* * to allow, * *
     * false
     * 
* * to deny * @param scope * Scope object */ boolean connect(IConnection conn, IScope scope, Object[] params); /** * Called just after the a connection is disconnected. * * @param conn * Connection object * @param scope * Scope object */ void disconnect(IConnection conn, IScope scope); /** * Called just before a child scope is added. * * @param scope * Scope that will be added * @return
     * true
     * 
* * to allow, * *
     * false
     * 
* * to deny */ boolean addChildScope(IBasicScope scope); /** * Called just after a child scope has been removed. * * @param scope * Scope that has been removed */ void removeChildScope(IBasicScope scope); /** * Called just before a client enters the scope. * * @param client * Client object * @return
     * true
     * 
* * to allow, * *
     * false
     * 
* * to deny connection * @param scope * Scope that is joined by client */ boolean join(IClient client, IScope scope); /** * Called just after the client leaves the scope. * * @param client * Client object * @param scope * Scope object */ void leave(IClient client, IScope scope); /** * Called when a service is called. * * @param conn * The connection object * @param call * The call object. * * @return
     * true
     * 
* * to allow, * *
     * false
     * 
* * to deny */ boolean serviceCall(IConnection conn, IServiceCall call); }




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