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27 package org.apache.hc.client5.http.examples;
28
29 import java.util.concurrent.CountDownLatch;
30 import java.util.concurrent.Future;
31 import java.util.concurrent.TimeUnit;
32
33 import org.apache.hc.client5.http.async.methods.SimpleHttpRequest;
34 import org.apache.hc.client5.http.async.methods.SimpleHttpResponse;
35 import org.apache.hc.client5.http.async.methods.SimpleRequestBuilder;
36 import org.apache.hc.client5.http.async.methods.SimpleRequestProducer;
37 import org.apache.hc.client5.http.async.methods.SimpleResponseConsumer;
38 import org.apache.hc.client5.http.impl.async.HttpAsyncClients;
39 import org.apache.hc.client5.http.impl.async.MinimalHttpAsyncClient;
40 import org.apache.hc.core5.concurrent.FutureCallback;
41 import org.apache.hc.core5.http.HttpHost;
42 import org.apache.hc.core5.http.config.Http1Config;
43 import org.apache.hc.core5.http.message.StatusLine;
44 import org.apache.hc.core5.http.nio.AsyncClientEndpoint;
45 import org.apache.hc.core5.http2.HttpVersionPolicy;
46 import org.apache.hc.core5.io.CloseMode;
47 import org.apache.hc.core5.reactor.IOReactorConfig;
48 import org.apache.hc.core5.util.Timeout;
49
50
51
52
53 public class AsyncClientHttp1Pipelining {
54
55 public static void main(final String[] args) throws Exception {
56
57 final IOReactorConfig ioReactorConfig = IOReactorConfig.custom()
58 .setSoTimeout(Timeout.ofSeconds(5))
59 .build();
60
61 final MinimalHttpAsyncClient client = HttpAsyncClients.createMinimal(
62 HttpVersionPolicy.FORCE_HTTP_1, null, Http1Config.DEFAULT, ioReactorConfig);
63
64 client.start();
65
66 final HttpHost target = new HttpHost("httpbin.org");
67 final Future<AsyncClientEndpoint> leaseFuture = client.lease(target, null);
68 final AsyncClientEndpoint endpoint = leaseFuture.get(30, TimeUnit.SECONDS);
69 try {
70 final String[] requestUris = new String[] {"/", "/ip", "/user-agent", "/headers"};
71
72 final CountDownLatch latch = new CountDownLatch(requestUris.length);
73 for (final String requestUri: requestUris) {
74 final SimpleHttpRequest request = SimpleRequestBuilder.get()
75 .setHttpHost(target)
76 .setPath(requestUri)
77 .build();
78
79 System.out.println("Executing request " + request);
80 endpoint.execute(
81 SimpleRequestProducer.create(request),
82 SimpleResponseConsumer.create(),
83 new FutureCallback<SimpleHttpResponse>() {
84
85 @Override
86 public void completed(final SimpleHttpResponse response) {
87 latch.countDown();
88 System.out.println(request + "->" + new StatusLine(response));
89 System.out.println(response.getBody());
90 }
91
92 @Override
93 public void failed(final Exception ex) {
94 latch.countDown();
95 System.out.println(request + "->" + ex);
96 }
97
98 @Override
99 public void cancelled() {
100 latch.countDown();
101 System.out.println(request + " cancelled");
102 }
103
104 });
105 }
106 latch.await();
107 } finally {
108 endpoint.releaseAndReuse();
109 }
110
111 System.out.println("Shutting down");
112 client.close(CloseMode.GRACEFUL);
113 }
114
115 }