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 * 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
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 * <http://www.apache.org/>.
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 */

package org.apache.http.conn;

import java.io.IOException;
import java.net.InetSocketAddress;

import org.apache.http.HttpHost;
import org.apache.http.config.SocketConfig;
import org.apache.http.protocol.HttpContext;

Connection operator that performs connection connect and upgrade operations. Usually, components participating in these operations are registry of ConnectionSocketFactory, SchemePortResolver and DnsResolver. In general, HTTP client user should not provide implementations of this interface, as HttpClient will use the default one that covers most of the cases needed for majority of users. 
Since:
4.4/**
 * Connection operator that performs connection connect and upgrade operations. Usually, components
 * participating in these operations are registry of {@link org.apache.http.conn.socket.ConnectionSocketFactory},
 * {@link SchemePortResolver} and {@link DnsResolver}. In general, HTTP client user should not
 * provide implementations of this interface, as HttpClient will use the default one that covers
 * most of the cases needed for majority of users.
 *
 * @since 4.4
 */
public interface HttpClientConnectionOperator {

    void connect(
            ManagedHttpClientConnection conn,
            HttpHost host,
            InetSocketAddress localAddress,
            int connectTimeout,
            SocketConfig socketConfig,
            HttpContext context) throws IOException;

    void upgrade(
            ManagedHttpClientConnection conn,
            HttpHost host,
            HttpContext context) throws IOException;

}