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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.
 */

package org.apache.sshd.server.kex;

import org.apache.sshd.common.kex.dh.AbstractDHKeyExchange;
import org.apache.sshd.common.session.Session;
import org.apache.sshd.common.util.ValidateUtils;
import org.apache.sshd.server.session.ServerSession;
import org.apache.sshd.server.session.ServerSessionHolder;

/**
 * @author Apache MINA SSHD Project
 */
public abstract class AbstractDHServerKeyExchange
        extends AbstractDHKeyExchange
        implements ServerSessionHolder {
    protected AbstractDHServerKeyExchange(Session s) {
        super(ValidateUtils.checkInstanceOf(s, ServerSession.class,
                "Using a client side KeyExchange on a server: %s", s));
    }

    @Override
    public final ServerSession getServerSession() {
        return (ServerSession) getSession();
    }
}