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

/*
 * ====================================================================
 * 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
 * <http://www.apache.org/>.
 *
 */
package org.apache.hc.client5.http.examples;

import java.util.concurrent.Future;

import org.apache.hc.client5.http.ContextBuilder;
import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
import org.apache.hc.client5.http.async.methods.SimpleRequestProducer;
import org.apache.hc.client5.http.async.methods.SimpleResponseConsumer;
import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
import org.apache.hc.client5.http.impl.async.CloseableHttpAsyncClient;
import org.apache.hc.client5.http.impl.async.HttpAsyncClients;
import org.apache.hc.client5.http.protocol.HttpClientContext;
import org.apache.hc.core5.concurrent.FutureCallback;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.message.StatusLine;
import org.apache.hc.core5.io.CloseMode;

/**
 * A simple example that uses HttpClient to execute an HTTP request against
 * a target site that requires user authentication.
 */
public class AsyncPreemptiveBasicClientAuthentication {

    public static void main(final String[] args) throws Exception {
        final CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault();
        httpclient.start();

        final HttpClientContext localContext = ContextBuilder.create()
                .preemptiveBasicAuth(new HttpHost("http", "httpbin.org"),
                        new UsernamePasswordCredentials("user", "passwd".toCharArray()))
                .build();

        final SimpleHttpRequest request = SimpleRequestBuilder.get("http://httpbin.org:80/basic-auth/user/passwd")
                .build();

        System.out.println("Executing request " + request);
        for (int i = 0; i < 3; i++) {
            final Future<SimpleHttpResponse> future = httpclient.execute(
                    SimpleRequestProducer.create(request),
                    SimpleResponseConsumer.create(),
                    localContext,
                    new FutureCallback<SimpleHttpResponse>() {

                        @Override
                        public void completed(final SimpleHttpResponse response) {
                            System.out.println(request + "->" + new StatusLine(response));
                            System.out.println(response.getBody());
                        }

                        @Override
                        public void failed(final Exception ex) {
                            System.out.println(request + "->" + ex);
                        }

                        @Override
                        public void cancelled() {
                            System.out.println(request + " cancelled");
                        }

                    });
            future.get();
        }

        System.out.println("Shutting down");
        httpclient.close(CloseMode.GRACEFUL);
    }
}