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/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */

package org.apache.http.conn;

import java.io.IOException;
import java.net.Socket;

import javax.net.ssl.SSLSession;

import org.apache.http.HttpClientConnection;
import org.apache.http.HttpInetConnection;

/**
 * Represents a managed connection whose state and life cycle is managed by
 * a connection manager. This interface extends {@link HttpClientConnection}
 * with methods to bind the connection to an arbitrary socket and
 * to obtain SSL session details.
 *
 * @since 4.3
 */
public interface ManagedHttpClientConnection extends HttpClientConnection, HttpInetConnection {

    /**
     * Returns connection ID which is expected to be unique
     * for the life span of the connection manager.
     */
    String getId();

    /**
     * Binds this connection to the given socket. The connection
     * is considered open if it is bound and the underlying socket
     * is connection to a remote host.
     *
     * @param socket the socket to bind the connection to.
     * @throws IOException
     */
    void bind(Socket socket) throws IOException;

    /**
     * Returns the underlying socket.
     */
    Socket getSocket();

    /**
     * Obtains the SSL session of the underlying connection, if any.
     * If this connection is open, and the underlying socket is an
     * {@link javax.net.ssl.SSLSocket SSLSocket}, the SSL session of
     * that socket is obtained. This is a potentially blocking operation.
     *
     * @return  the underlying SSL session if available,
     *          null otherwise
     */
    SSLSession getSSLSession();

}