Read Expires cookie attribute in HttpComponents connector

Prior to this commit, the HttpComponents implementation for the
`WebClient` would only consider the max-age attribute of response
cookies when parsing the response. This is not aligned with other client
implementations that consider the max-age attribute first, and then the
expires if the former was not present. The expires date is then
translated into a max-age duration. This behavior is done naturally by
several implementations.

This commit updates the `HttpComponentsClientHttpResponse` to do the
same.

Fixes gh-33157

spring-web/src/main/java/org/springframework/http/client/reactive/HttpComponentsClientHttpResponse.java

@@ -17,6 +17,10 @@
 package org.springframework.http.client.reactive;
 
 import java.nio.ByteBuffer;
+import java.time.Duration;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeParseException;
 
 import org.apache.hc.client5.http.cookie.Cookie;
 import org.apache.hc.client5.http.protocol.HttpClientContext;
@@ -70,9 +74,22 @@ class HttpComponentsClientHttpResponse extends AbstractClientHttpResponse {
 	}
 
 	private static long getMaxAgeSeconds(Cookie cookie) {
+		String expiresAttribute = cookie.getAttribute(Cookie.EXPIRES_ATTR);
 		String maxAgeAttribute = cookie.getAttribute(Cookie.MAX_AGE_ATTR);
-		return (maxAgeAttribute != null ? Long.parseLong(maxAgeAttribute) : -1);
+		if (maxAgeAttribute != null) {
+			return Long.parseLong(maxAgeAttribute);
+		}
+		// only consider expires if max-age is not present
+		else if (expiresAttribute != null) {
+			try {
+				ZonedDateTime expiresDate = ZonedDateTime.parse(expiresAttribute, DateTimeFormatter.RFC_1123_DATE_TIME);
+				return Duration.between(ZonedDateTime.now(expiresDate.getZone()), expiresDate).toSeconds();
+			}
+			catch (DateTimeParseException ex) {
+				// ignore
+			}
+		}
+		return -1;
 	}
-
 
 }

spring-web/src/test/java/org/springframework/http/client/reactive/ClientHttpConnectorTests.java

@@ -23,6 +23,10 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 import java.net.URI;
 import java.nio.charset.StandardCharsets;
+import java.time.Duration;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -57,7 +61,9 @@ import static org.assertj.core.api.Assertions.fail;
 import static org.junit.jupiter.api.Named.named;
 
 /**
+ * Tests for {@link ClientHttpConnector} implementations.
  * @author Arjen Poutsma
+ * @author Brian Clozel
  */
 class ClientHttpConnectorTests {
 
@@ -172,6 +178,26 @@ class ClientHttpConnectorTests {
 				.verify();
 	}
 
+	@ParameterizedConnectorTest
+	void cookieExpireValueSetAsMaxAge(ClientHttpConnector connector) {
+		ZonedDateTime tomorrow = ZonedDateTime.now(ZoneId.of("UTC")).plusDays(1);
+		String formattedDate = tomorrow.format(DateTimeFormatter.RFC_1123_DATE_TIME);
+
+		prepareResponse(response -> {
+			response.setResponseCode(200);
+			response.addHeader("Set-Cookie", "id=test; Expires= " + formattedDate + ";");
+		});
+		Mono<ClientHttpResponse> futureResponse =
+				connector.connect(HttpMethod.GET, this.server.url("/").uri(), ReactiveHttpOutputMessage::setComplete);
+		StepVerifier.create(futureResponse)
+				.assertNext(response -> {
+							assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
+							assertThat(response.getCookies().getFirst("id").getMaxAge()).isCloseTo(Duration.ofDays(1), Duration.ofSeconds(10));
+						}
+				)
+				.verifyComplete();
+	}
+
 	private Buffer randomBody(int size) {
 		Buffer responseBody = new Buffer();
 		Random rnd = new Random();
@@ -211,7 +237,8 @@ class ClientHttpConnectorTests {
 		return Arrays.asList(
 				named("Reactor Netty", new ReactorClientHttpConnector()),
 				named("Jetty", new JettyClientHttpConnector()),
-				named("HttpComponents", new HttpComponentsClientHttpConnector())
+				named("HttpComponents", new HttpComponentsClientHttpConnector()),
+				named("Jdk", new JdkClientHttpConnector())
 		);
 	}