/**
 * Copyright 2007-2016, Kaazing Corporation. 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.apache.mina.core.service;

import java.net.SocketAddress;
import java.util.Set;

import org.apache.mina.core.session.IoSession;
import org.apache.mina.core.session.IoSessionConfig;

/**
 * Provides meta-information that describes an {@link IoService}.
 *
 * @author <a href="http://mina.apache.org">Apache MINA Project</a>
 */
public interface TransportMetadata {
    
    /**
     * Returns the name of the service provider (e.g. "nio", "apr" and "rxtx").
     */
    String getProviderName();

    /**
     * Returns the name of the service.
     */
    String getName();

    /**
     * Returns <code>true</code> if the session of this transport type is
     * <a href="http://en.wikipedia.org/wiki/Connectionless">connectionless</a>.
     */
    boolean isConnectionless();

    /**
     * Returns {@code true} if the messages exchanged by the service can be
     * <a href="http://en.wikipedia.org/wiki/IPv4#Fragmentation_and_reassembly">fragmented
     * or reassembled</a> by its underlying transport.
     */
    boolean hasFragmentation();

    /**
     * Returns the address type of the service.
     */
    Class<? extends SocketAddress> getAddressType();

    /**
     * Returns the set of the allowed message type when you write to an
     * {@link IoSession} that is managed by the service.
     */
    Set<Class<?>> getEnvelopeTypes();

    /**
     * Returns the type of the {@link IoSessionConfig} of the service
     */
    Class<? extends IoSessionConfig> getSessionConfigType();
}
