httpclient5/src/test/java/org/apache/hc/client5/http/examples/ClientChunkEncodedPost.java

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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
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 *   http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing,
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 * KIND, either express or implied.  See the License for the
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 *
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package org.apache.hc.client5.http.examples;

import java.io.File;
import java.io.FileInputStream;

import org.apache.hc.client5.http.classic.methods.HttpPost;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.core5.http.ContentType;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.io.entity.InputStreamEntity;
import org.apache.hc.core5.http.message.StatusLine;

/**
 * Example how to use unbuffered chunk-encoded POST request.
 */
public class ClientChunkEncodedPost {

    public static void main(final String[] args) throws Exception {
        if (args.length != 1)  {
            System.out.println("File path not given");
            System.exit(1);
        }
        try (final CloseableHttpClient httpclient = HttpClients.createDefault()) {
            final HttpPost httppost = new HttpPost("http://httpbin.org/post");

            final File file = new File(args[0]);

            final InputStreamEntity reqEntity = new InputStreamEntity(
                    new FileInputStream(file), -1, ContentType.APPLICATION_OCTET_STREAM);
            // It may be more appropriate to use FileEntity class in this particular
            // instance but we are using a more generic InputStreamEntity to demonstrate
            // the capability to stream out data from any arbitrary source
            //
            // FileEntity entity = new FileEntity(file, "binary/octet-stream");

            httppost.setEntity(reqEntity);

            System.out.println("Executing request " + httppost.getMethod() + " " + httppost.getUri());
            httpclient.execute(httppost, response -> {
                System.out.println("----------------------------------------");
                System.out.println(httppost + "->" + new StatusLine(response));
                EntityUtils.consume(response.getEntity());
                return null;
            });
        }
    }

}