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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.hc.core5.http.impl.nio;

import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.http.URIScheme;
import org.apache.hc.core5.http.nio.ssl.TlsStrategy;
import org.apache.hc.core5.reactor.EndpointParameters;
import org.apache.hc.core5.reactor.IOEventHandler;
import org.apache.hc.core5.reactor.IOEventHandlerFactory;
import org.apache.hc.core5.reactor.ProtocolIOSession;
import org.apache.hc.core5.util.Args;
import org.apache.hc.core5.util.Timeout;

/**
 * {@link ServerHttp1IOEventHandler} factory.
 *
 * @since 5.0
 */
@Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
public class ServerHttp1IOEventHandlerFactory implements IOEventHandlerFactory {

    private final ServerHttp1StreamDuplexerFactory streamDuplexerFactory;
    private final TlsStrategy tlsStrategy;
    private final Timeout handshakeTimeout;

    public ServerHttp1IOEventHandlerFactory(
            final ServerHttp1StreamDuplexerFactory streamDuplexerFactory,
            final TlsStrategy tlsStrategy,
            final Timeout handshakeTimeout) {
        this.streamDuplexerFactory = Args.notNull(streamDuplexerFactory, "Stream duplexer factory");
        this.tlsStrategy = tlsStrategy;
        this.handshakeTimeout = handshakeTimeout;
    }

    @Override
    public IOEventHandler createHandler(final ProtocolIOSession ioSession, final Object attachment) {
        String endpointScheme = URIScheme.HTTP.id;
        if (tlsStrategy != null) {
            if (attachment instanceof EndpointParameters) {
                final EndpointParameters params = (EndpointParameters) attachment;
                endpointScheme = params.getScheme();
                if (URIScheme.HTTPS.same(endpointScheme)) {
                    tlsStrategy.upgrade(
                            ioSession,
                            params,
                            params.getAttachment(),
                            handshakeTimeout,
                            null);
                }
            } else {
                endpointScheme = URIScheme.HTTPS.id;
                tlsStrategy.upgrade(
                        ioSession,
                        null,
                        attachment,
                        handshakeTimeout,
                        null);
            }
        }
        return new ServerHttp1IOEventHandler(streamDuplexerFactory.create(endpointScheme, ioSession));
    }

}