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27 package org.apache.hc.core5.http2.examples;
28
29 import java.util.List;
30 import java.util.concurrent.CountDownLatch;
31 import java.util.concurrent.Future;
32
33 import javax.net.ssl.SSLEngine;
34 import javax.net.ssl.SSLException;
35
36 import org.apache.hc.core5.concurrent.FutureCallback;
37 import org.apache.hc.core5.http.Header;
38 import org.apache.hc.core5.http.HttpConnection;
39 import org.apache.hc.core5.http.HttpHost;
40 import org.apache.hc.core5.http.HttpResponse;
41 import org.apache.hc.core5.http.Message;
42 import org.apache.hc.core5.http.impl.bootstrap.HttpAsyncRequester;
43 import org.apache.hc.core5.http.nio.AsyncClientEndpoint;
44 import org.apache.hc.core5.http.nio.entity.StringAsyncEntityConsumer;
45 import org.apache.hc.core5.http.nio.support.AsyncRequestBuilder;
46 import org.apache.hc.core5.http.nio.support.BasicResponseConsumer;
47 import org.apache.hc.core5.http2.config.H2Config;
48 import org.apache.hc.core5.http2.frame.RawFrame;
49 import org.apache.hc.core5.http2.impl.nio.H2StreamListener;
50 import org.apache.hc.core5.http2.impl.nio.bootstrap.H2RequesterBootstrap;
51 import org.apache.hc.core5.http2.ssl.H2ClientTlsStrategy;
52 import org.apache.hc.core5.io.CloseMode;
53 import org.apache.hc.core5.net.NamedEndpoint;
54 import org.apache.hc.core5.reactor.ssl.SSLSessionVerifier;
55 import org.apache.hc.core5.reactor.ssl.TlsDetails;
56 import org.apache.hc.core5.ssl.SSLContexts;
57 import org.apache.hc.core5.util.Timeout;
58
59
60
61
62
63
64 public class H2TlsAlpnRequestExecutionExample {
65
66 public final static void main(final String[] args) throws Exception {
67
68 final H2Config h2Config = H2Config.custom()
69 .setPushEnabled(false)
70 .build();
71
72 final HttpAsyncRequester requester = H2RequesterBootstrap.bootstrap()
73 .setH2Config(h2Config)
74 .setTlsStrategy(new H2ClientTlsStrategy(SSLContexts.createSystemDefault(), new SSLSessionVerifier() {
75
76 @Override
77 public TlsDetails verify(final NamedEndpoint endpoint, final SSLEngine sslEngine) throws SSLException {
78
79
80
81
82
83 return null;
84 }
85
86 }))
87 .setStreamListener(new H2StreamListener() {
88
89 @Override
90 public void onHeaderInput(final HttpConnection connection, final int streamId, final List<? extends Header> headers) {
91 for (int i = 0; i < headers.size(); i++) {
92 System.out.println(connection.getRemoteAddress() + " (" + streamId + ") << " + headers.get(i));
93 }
94 }
95
96 @Override
97 public void onHeaderOutput(final HttpConnection connection, final int streamId, final List<? extends Header> headers) {
98 for (int i = 0; i < headers.size(); i++) {
99 System.out.println(connection.getRemoteAddress() + " (" + streamId + ") >> " + headers.get(i));
100 }
101 }
102
103 @Override
104 public void onFrameInput(final HttpConnection connection, final int streamId, final RawFrame frame) {
105 }
106
107 @Override
108 public void onFrameOutput(final HttpConnection connection, final int streamId, final RawFrame frame) {
109 }
110
111 @Override
112 public void onInputFlowControl(final HttpConnection connection, final int streamId, final int delta, final int actualSize) {
113 }
114
115 @Override
116 public void onOutputFlowControl(final HttpConnection connection, final int streamId, final int delta, final int actualSize) {
117 }
118
119 })
120 .create();
121 Runtime.getRuntime().addShutdownHook(new Thread() {
122 @Override
123 public void run() {
124 System.out.println("HTTP requester shutting down");
125 requester.close(CloseMode.GRACEFUL);
126 }
127 });
128 requester.start();
129
130 final HttpHost target = new HttpHost("https", "nghttp2.org", 443);
131 final String[] requestUris = new String[] {"/httpbin/ip", "/httpbin/user-agent", "/httpbin/headers"};
132
133 final CountDownLatch latch = new CountDownLatch(requestUris.length);
134 for (final String requestUri: requestUris) {
135 final Future<AsyncClientEndpoint> future = requester.connect(target, Timeout.ofSeconds(5));
136 final AsyncClientEndpoint clientEndpoint = future.get();
137 clientEndpoint.execute(
138 AsyncRequestBuilder.get()
139 .setHttpHost(target)
140 .setPath(requestUri)
141 .build(),
142 new BasicResponseConsumer<>(new StringAsyncEntityConsumer()),
143 new FutureCallback<Message<HttpResponse, String>>() {
144
145 @Override
146 public void completed(final Message<HttpResponse, String> message) {
147 clientEndpoint.releaseAndReuse();
148 final HttpResponse response = message.getHead();
149 final String body = message.getBody();
150 System.out.println(requestUri + "->" + response.getCode() + " " + response.getVersion());
151 System.out.println(body);
152 latch.countDown();
153 }
154
155 @Override
156 public void failed(final Exception ex) {
157 clientEndpoint.releaseAndDiscard();
158 System.out.println(requestUri + "->" + ex);
159 latch.countDown();
160 }
161
162 @Override
163 public void cancelled() {
164 clientEndpoint.releaseAndDiscard();
165 System.out.println(requestUri + " cancelled");
166 latch.countDown();
167 }
168
169 });
170 }
171
172 latch.await();
173 System.out.println("Shutting down I/O reactor");
174 requester.initiateShutdown();
175 }
176
177 }