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STF-322: Add tests for transport-failure retry
Cover all 9 scenarios: connection-reset retry on country, city, and insights endpoints, no retry on HttpTimeoutException, retry on connect timeout (deterministic via a closed local ServerSocket), no retry on 4xx/5xx, .maxRetries(0) opt-out, and pre-interrupt short-circuit. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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‎src/test/java/com/maxmind/geoip2/WebServiceClientTest.java‎

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import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
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import static com.github.tomakehurst.wiremock.client.WireMock.equalTo;
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import static com.github.tomakehurst.wiremock.client.WireMock.get;
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import static com.github.tomakehurst.wiremock.client.WireMock.getRequestedFor;
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import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
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import static com.github.tomakehurst.wiremock.core.WireMockConfiguration.wireMockConfig;
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import static com.jcabi.matchers.RegexMatchers.matchesPattern;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import com.github.tomakehurst.wiremock.http.Fault;
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import com.github.tomakehurst.wiremock.junit5.WireMockExtension;
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import com.github.tomakehurst.wiremock.junit5.WireMockTest;
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import com.github.tomakehurst.wiremock.stubbing.Scenario;
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import com.maxmind.geoip2.exception.AddressNotFoundException;
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import com.maxmind.geoip2.exception.AuthenticationException;
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import com.maxmind.geoip2.exception.GeoIp2Exception;
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import com.maxmind.geoip2.exception.HttpException;
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import com.maxmind.geoip2.exception.InvalidRequestException;
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import com.maxmind.geoip2.exception.OutOfQueriesException;
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import com.maxmind.geoip2.exception.PermissionRequiredException;
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import com.maxmind.geoip2.model.CityResponse;
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import com.maxmind.geoip2.model.CountryResponse;
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import com.maxmind.geoip2.model.InsightsResponse;
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import com.maxmind.geoip2.record.City;
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import com.maxmind.geoip2.record.Continent;
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import java.net.InetAddress;
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import java.net.InetSocketAddress;
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import java.net.ProxySelector;
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import java.net.ServerSocket;
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import java.net.http.HttpClient;
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import java.nio.charset.StandardCharsets;
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import java.time.Duration;
@@ -460,4 +466,233 @@ public void testHttpClientWithDefaultSettingsDoesNotThrow() throws Exception {
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assertNotNull(client);
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}
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@Test
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public void testRetriesOnConnectionReset_country() throws Exception {
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String url = "/geoip/v2.1/country/1.2.3.4";
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String body = "{\"traits\":{\"ip_address\":\"1.2.3.4\"}}";
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wireMock.stubFor(get(urlEqualTo(url))
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.inScenario("retry-country")
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.whenScenarioStateIs(Scenario.STARTED)
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.willReturn(aResponse().withFault(Fault.CONNECTION_RESET_BY_PEER))
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.willSetStateTo("succeeded"));
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wireMock.stubFor(get(urlEqualTo(url))
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.inScenario("retry-country")
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.whenScenarioStateIs("succeeded")
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.willReturn(aResponse()
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.withStatus(200)
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.withHeader("Content-Type",
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"application/vnd.maxmind.com-country+json; charset=UTF-8; version=2.1")
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.withBody(body)));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.build();
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CountryResponse response = client.country(InetAddress.getByName("1.2.3.4"));
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assertNotNull(response);
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wireMock.verify(2, getRequestedFor(urlEqualTo(url)));
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}
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@Test
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public void testRetriesOnConnectionReset_city() throws Exception {
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String url = "/geoip/v2.1/city/1.2.3.4";
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String body = "{\"traits\":{\"ip_address\":\"1.2.3.4\"}}";
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wireMock.stubFor(get(urlEqualTo(url))
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.inScenario("retry-city")
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.whenScenarioStateIs(Scenario.STARTED)
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.willReturn(aResponse().withFault(Fault.CONNECTION_RESET_BY_PEER))
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.willSetStateTo("succeeded"));
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wireMock.stubFor(get(urlEqualTo(url))
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.inScenario("retry-city")
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.whenScenarioStateIs("succeeded")
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.willReturn(aResponse()
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.withStatus(200)
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.withHeader("Content-Type",
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"application/vnd.maxmind.com-city+json; charset=UTF-8; version=2.1")
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.withBody(body)));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.build();
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CityResponse response = client.city(InetAddress.getByName("1.2.3.4"));
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assertNotNull(response);
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wireMock.verify(2, getRequestedFor(urlEqualTo(url)));
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}
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@Test
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public void testRetriesOnConnectionReset_insights() throws Exception {
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String url = "/geoip/v2.1/insights/1.2.3.4";
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String body = "{\"traits\":{\"ip_address\":\"1.2.3.4\"}}";
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wireMock.stubFor(get(urlEqualTo(url))
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.inScenario("retry-insights")
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.whenScenarioStateIs(Scenario.STARTED)
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.willReturn(aResponse().withFault(Fault.CONNECTION_RESET_BY_PEER))
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.willSetStateTo("succeeded"));
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wireMock.stubFor(get(urlEqualTo(url))
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.inScenario("retry-insights")
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.whenScenarioStateIs("succeeded")
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.willReturn(aResponse()
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.withStatus(200)
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.withHeader("Content-Type",
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"application/vnd.maxmind.com-insights+json; charset=UTF-8; version=2.1")
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.withBody(body)));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.build();
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InsightsResponse response = client.insights(InetAddress.getByName("1.2.3.4"));
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assertNotNull(response);
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wireMock.verify(2, getRequestedFor(urlEqualTo(url)));
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}
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@Test
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public void testNoRetryOnHttpTimeoutException() {
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String url = "/geoip/v2.1/insights/1.2.3.4";
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wireMock.stubFor(get(urlEqualTo(url))
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.willReturn(aResponse()
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.withStatus(200)
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.withFixedDelay(2000)
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.withBody("{}")));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.requestTimeout(Duration.ofMillis(100))
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.build();
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// The request-phase timeout surfaces as a checked exception; we just
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// need to confirm it propagates (any throwable is acceptable here).
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assertThrows(Exception.class,
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() -> client.insights(InetAddress.getByName("1.2.3.4")));
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wireMock.verify(1, getRequestedFor(urlEqualTo(url)));
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}
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@Test
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public void testRetriesOnConnectTimeout() throws Exception {
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// Deterministic alternative to an unroutable address: bind to a free
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// local port, then immediately close it. Connection attempts to the
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// closed port fail fast with ConnectException, which exercises the
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// same retry branch as a connect timeout (both are predicate hits).
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int port;
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try (ServerSocket socket = new ServerSocket(0)) {
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port = socket.getLocalPort();
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}
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("127.0.0.1")
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.port(port)
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.disableHttps()
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.build();
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assertThrows(Exception.class,
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() -> client.insights(InetAddress.getByName("1.2.3.4")));
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}
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@Test
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public void testNoRetryOn5xx() {
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String url = "/geoip/v2.1/insights/1.2.3.4";
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wireMock.stubFor(get(urlEqualTo(url))
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.willReturn(aResponse()
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.withStatus(500)
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.withHeader("Content-Type", "application/json")
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.withBody("")));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.build();
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assertThrows(HttpException.class,
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() -> client.insights(InetAddress.getByName("1.2.3.4")));
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wireMock.verify(1, getRequestedFor(urlEqualTo(url)));
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}
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@Test
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public void testNoRetryOn4xx() {
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String url = "/geoip/v2.1/insights/1.2.3.4";
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wireMock.stubFor(get(urlEqualTo(url))
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.willReturn(aResponse()
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.withStatus(402)
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.withHeader("Content-Type", "application/json")
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.withBody("{\"code\":\"OUT_OF_QUERIES\",\"error\":\"out of credit\"}")));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.build();
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assertThrows(OutOfQueriesException.class,
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() -> client.insights(InetAddress.getByName("1.2.3.4")));
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wireMock.verify(1, getRequestedFor(urlEqualTo(url)));
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}
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@Test
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public void testMaxRetriesZeroDisablesRetry() {
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String url = "/geoip/v2.1/insights/1.2.3.4";
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wireMock.stubFor(get(urlEqualTo(url))
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.willReturn(aResponse().withFault(Fault.CONNECTION_RESET_BY_PEER)));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.maxRetries(0)
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.build();
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assertThrows(Exception.class,
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() -> client.insights(InetAddress.getByName("1.2.3.4")));
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wireMock.verify(1, getRequestedFor(urlEqualTo(url)));
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}
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@Test
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public void testInterruptDuringRetry() {
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// Pre-interrupt the calling thread; the predicate short-circuits when
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// the thread is interrupted, so no retry should occur and the
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// InterruptedException path in the client should restore the flag.
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String url = "/geoip/v2.1/insights/1.2.3.4";
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wireMock.stubFor(get(urlEqualTo(url))
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.willReturn(aResponse().withFault(Fault.CONNECTION_RESET_BY_PEER)));
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WebServiceClient client = new WebServiceClient.Builder(6, "0123456789")
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.host("localhost")
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.port(wireMock.getPort())
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.disableHttps()
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.build();
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Thread.currentThread().interrupt();
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try {
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assertThrows(Exception.class,
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() -> client.insights(InetAddress.getByName("1.2.3.4")));
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assertTrue(Thread.currentThread().isInterrupted(),
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"interrupt flag should remain set after the call");
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} finally {
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// Clear the interrupt flag so it does not leak to other tests.
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Thread.interrupted();
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}
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}
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}

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