jdk-24/test/jdk/java/net/httpclient/ConnectExceptionTest.java

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/*
 * @test
 * @summary Expect ConnectException for all non-security related connect errors
 * @bug 8204864
 * @run testng/othervm -Djdk.net.hosts.file=HostFileDoesNotExist ConnectExceptionTest
 */

import java.io.IOException;
import java.net.ConnectException;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.ProxySelector;
import java.net.SocketAddress;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpRequest.BodyPublishers;
import java.net.http.HttpResponse;
import java.net.http.HttpResponse.BodyHandlers;
import java.util.List;
import java.util.concurrent.ExecutionException;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import static java.lang.System.out;
import static org.testng.Assert.assertTrue;
import static org.testng.Assert.fail;

public class ConnectExceptionTest {

    static final ProxySelector INVALID_PROXY = new ProxySelector() {
        final List<Proxy> proxy = List.of(new Proxy(Proxy.Type.HTTP,
                InetSocketAddress.createUnresolved("proxy.invalid", 8080)));
        @Override public List<Proxy> select(URI uri) { return proxy; }
        @Override public void connectFailed(URI uri, SocketAddress sa, IOException ioe) { }
        @Override public String toString() { return "INVALID_PROXY"; }
    };

    static final ProxySelector NO_PROXY = new ProxySelector() {
        @Override public List<Proxy> select(URI uri) { return List.of(Proxy.NO_PROXY); }
        @Override public void connectFailed(URI uri, SocketAddress sa, IOException ioe) { }
        @Override public String toString() { return "NO_PROXY"; }
    };

    @DataProvider(name = "uris")
    public Object[][] uris() {
        return new Object[][]{
            { "http://test.invalid/",  NO_PROXY       },
            { "https://test.invalid/", NO_PROXY       },
            { "http://test.invalid/",  INVALID_PROXY  },
            { "https://test.invalid/", INVALID_PROXY  },
        };
    }

    @Test(dataProvider = "uris")
    void testSynchronousGET(String uriString, ProxySelector proxy) throws Exception {
        out.printf("%n---%ntestSynchronousGET starting uri:%s, proxy:%s%n", uriString, proxy);
        HttpClient client = HttpClient.newBuilder().proxy(proxy).build();

        URI uri = URI.create(uriString);
        HttpRequest request = HttpRequest.newBuilder(uri).build();
        try {
            HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
            fail("UNEXPECTED response: " + response + ", body:" + response.body());
        } catch (ConnectException ioe) {
            out.println("Caught expected: " + ioe);
            //ioe.printStackTrace(out);
        }
    }

    @Test(dataProvider = "uris")
    void testSynchronousPOST(String uriString, ProxySelector proxy) throws Exception {
        out.printf("%n---%ntestSynchronousPOST starting uri:%s, proxy:%s%n", uriString, proxy);
        HttpClient client = HttpClient.newBuilder().proxy(proxy).build();

        URI uri = URI.create(uriString);
        HttpRequest request = HttpRequest.newBuilder(uri)
                .POST(BodyPublishers.ofString("Does not matter"))
                .build();
        try {
            HttpResponse<String> response = client.send(request, BodyHandlers.ofString());
            fail("UNEXPECTED response: " + response + ", body:" + response.body());
        } catch (ConnectException ioe) {
            out.println("Caught expected: " + ioe);
            //ioe.printStackTrace(out);
        }
    }

    @Test(dataProvider = "uris")
    void testAsynchronousGET(String uriString, ProxySelector proxy) throws Exception {
        out.printf("%n---%ntestAsynchronousGET starting uri:%s, proxy:%s%n", uriString, proxy);
        HttpClient client = HttpClient.newBuilder().proxy(proxy).build();

        URI uri = URI.create(uriString);
        HttpRequest request = HttpRequest.newBuilder(uri).build();
        try {
            HttpResponse<String> response = client.sendAsync(request, BodyHandlers.ofString()).get();
            fail("UNEXPECTED response: " + response + ", body:" + response.body());
        } catch (ExecutionException ee) {
            Throwable t = ee.getCause();
            if (t instanceof ConnectException) {
                out.println("Caught expected: " + t);
            } else {
                t.printStackTrace(out);
                fail("Unexpected exception: " + t);
            }
        }
    }

    @Test(dataProvider = "uris")
    void testAsynchronousPOST(String uriString, ProxySelector proxy) throws Exception {
        out.printf("%n---%ntestAsynchronousPOST starting uri:%s, proxy:%s%n", uriString, proxy);
        HttpClient client = HttpClient.newBuilder().proxy(proxy).build();

        URI uri = URI.create(uriString);
        HttpRequest request = HttpRequest.newBuilder(uri)
                .POST(BodyPublishers.ofString("Does not matter"))
                .build();
        try {
            HttpResponse<String> response = client.sendAsync(request, BodyHandlers.ofString()).get();
            fail("UNEXPECTED response: " + response + ", body:" + response.body());
        } catch (ExecutionException ee) {
            Throwable t = ee.getCause();
            if (t instanceof ConnectException) {
                out.println("Caught expected: " + t);
            } else {
                t.printStackTrace(out);
                fail("Unexpected exception: " + t);
            }
        }
    }
}