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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.io;

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

import org.apache.hc.core5.annotation.Contract;
import org.apache.hc.core5.annotation.ThreadingBehavior;
import org.apache.hc.core5.http.ClassicHttpRequest;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.ContentLengthStrategy;
import org.apache.hc.core5.http.config.CharCodingConfig;
import org.apache.hc.core5.http.config.Http1Config;
import org.apache.hc.core5.http.impl.CharCodingSupport;
import org.apache.hc.core5.http.io.HttpConnectionFactory;
import org.apache.hc.core5.http.io.HttpMessageParserFactory;
import org.apache.hc.core5.http.io.HttpMessageWriterFactory;
import org.apache.hc.core5.http.io.ResponseOutOfOrderStrategy;

/**
 * Default factory for {@link org.apache.hc.core5.http.io.HttpClientConnection}s.
 *
 * @since 4.3
 */
@Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
public class DefaultBHttpClientConnectionFactory
        implements HttpConnectionFactory {

    private final Http1Config http1Config;
    private final CharCodingConfig charCodingConfig;
    private final ContentLengthStrategy incomingContentStrategy;
    private final ContentLengthStrategy outgoingContentStrategy;
    private final ResponseOutOfOrderStrategy responseOutOfOrderStrategy;
    private final HttpMessageWriterFactory requestWriterFactory;
    private final HttpMessageParserFactory responseParserFactory;

    private DefaultBHttpClientConnectionFactory(
            final Http1Config http1Config,
            final CharCodingConfig charCodingConfig,
            final ContentLengthStrategy incomingContentStrategy,
            final ContentLengthStrategy outgoingContentStrategy,
            final ResponseOutOfOrderStrategy responseOutOfOrderStrategy,
            final HttpMessageWriterFactory requestWriterFactory,
            final HttpMessageParserFactory responseParserFactory) {
        this.http1Config = http1Config != null ? http1Config : Http1Config.DEFAULT;
        this.charCodingConfig = charCodingConfig != null ? charCodingConfig : CharCodingConfig.DEFAULT;
        this.incomingContentStrategy = incomingContentStrategy;
        this.outgoingContentStrategy = outgoingContentStrategy;
        this.responseOutOfOrderStrategy = responseOutOfOrderStrategy;
        this.requestWriterFactory = requestWriterFactory;
        this.responseParserFactory = responseParserFactory;
    }

    public DefaultBHttpClientConnectionFactory(
            final Http1Config http1Config,
            final CharCodingConfig charCodingConfig,
            final ContentLengthStrategy incomingContentStrategy,
            final ContentLengthStrategy outgoingContentStrategy,
            final HttpMessageWriterFactory requestWriterFactory,
            final HttpMessageParserFactory responseParserFactory) {
        this(
                http1Config,
                charCodingConfig,
                incomingContentStrategy,
                outgoingContentStrategy,
                null,
                requestWriterFactory,
                responseParserFactory);
    }

    public DefaultBHttpClientConnectionFactory(
            final Http1Config http1Config,
            final CharCodingConfig charCodingConfig,
            final HttpMessageWriterFactory requestWriterFactory,
            final HttpMessageParserFactory responseParserFactory) {
        this(http1Config, charCodingConfig, null, null, requestWriterFactory, responseParserFactory);
    }

    public DefaultBHttpClientConnectionFactory(
            final Http1Config http1Config,
            final CharCodingConfig charCodingConfig) {
        this(http1Config, charCodingConfig, null, null, null, null);
    }

    public DefaultBHttpClientConnectionFactory() {
        this(null, null, null, null, null, null);
    }

    @Override
    public DefaultBHttpClientConnection createConnection(final Socket socket) throws IOException {
        final DefaultBHttpClientConnection conn = new DefaultBHttpClientConnection(
                this.http1Config,
                CharCodingSupport.createDecoder(this.charCodingConfig),
                CharCodingSupport.createEncoder(this.charCodingConfig),
                this.incomingContentStrategy,
                this.outgoingContentStrategy,
                this.responseOutOfOrderStrategy,
                this.requestWriterFactory,
                this.responseParserFactory);
        conn.bind(socket);
        return conn;
    }

    /**
     * Create a new {@link Builder}.
     *
     * @since 5.1
     */
    public static Builder builder() {
        return new Builder();
    }

    /**
     * Builder for {@link DefaultBHttpClientConnectionFactory}.
     *
     * @since 5.1
     */
    public static final class Builder {
        private Http1Config http1Config;
        private CharCodingConfig charCodingConfig;
        private ContentLengthStrategy incomingContentLengthStrategy;
        private ContentLengthStrategy outgoingContentLengthStrategy;
        private ResponseOutOfOrderStrategy responseOutOfOrderStrategy;
        private HttpMessageWriterFactory requestWriterFactory;
        private HttpMessageParserFactory responseParserFactory;

        private Builder() {}

        public Builder http1Config(final Http1Config http1Config) {
            this.http1Config = http1Config;
            return this;
        }

        public Builder charCodingConfig(final CharCodingConfig charCodingConfig) {
            this.charCodingConfig = charCodingConfig;
            return this;
        }

        public Builder incomingContentLengthStrategy(final ContentLengthStrategy incomingContentLengthStrategy) {
            this.incomingContentLengthStrategy = incomingContentLengthStrategy;
            return this;
        }

        public Builder outgoingContentLengthStrategy(final ContentLengthStrategy outgoingContentLengthStrategy) {
            this.outgoingContentLengthStrategy = outgoingContentLengthStrategy;
            return this;
        }

        public Builder responseOutOfOrderStrategy(final ResponseOutOfOrderStrategy responseOutOfOrderStrategy) {
            this.responseOutOfOrderStrategy = responseOutOfOrderStrategy;
            return this;
        }

        public Builder requestWriterFactory(
                final HttpMessageWriterFactory requestWriterFactory) {
            this.requestWriterFactory = requestWriterFactory;
            return this;
        }

        public Builder responseParserFactory(
                final HttpMessageParserFactory responseParserFactory) {
            this.responseParserFactory = responseParserFactory;
            return this;
        }

        public DefaultBHttpClientConnectionFactory build() {
            return new DefaultBHttpClientConnectionFactory(
                    http1Config,
                    charCodingConfig,
                    incomingContentLengthStrategy,
                    outgoingContentLengthStrategy,
                    responseOutOfOrderStrategy,
                    requestWriterFactory,
                    responseParserFactory);
        }
    }
}