Polishing

spring-web/src/main/java/org/springframework/http/server/reactive/AbstractServerHttpRequest.java

@@ -166,7 +166,7 @@ public abstract class AbstractServerHttpRequest implements ServerHttpRequest {
 
 	/**
 	 * Obtain SSL session information from the underlying "native" request.
-	 * @return the SSL information or {@code null} if not available
+	 * @return the session information, or {@code null} if none available
 	 * @since 5.0.2
 	 */
 	@Nullable

spring-web/src/main/java/org/springframework/http/server/reactive/DefaultSslInfo.java

@@ -13,22 +13,23 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.security.cert.Certificate;
 import java.security.cert.X509Certificate;
 import java.util.ArrayList;
 import java.util.List;
-
 import javax.net.ssl.SSLSession;
 
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
 
 /**
+ * The default holder for SSL session information.
  *
  * @author Rossen Stoyanchev
- * @since 5.0
+ * @since 5.0.2
  */
 final class DefaultSslInfo implements SslInfo {
 
@@ -50,12 +51,26 @@ final class DefaultSslInfo implements SslInfo {
 		this.peerCertificates = initCertificates(session);
 	}
 
+
+	@Override
+	@Nullable
+	public String getSessionId() {
+		return this.sessionId;
+	}
+
+	@Override
+	public X509Certificate[] getPeerCertificates() {
+		return this.peerCertificates;
+	}
+
+
 	@Nullable
 	private static String initSessionId(SSLSession session) {
 		byte [] bytes = session.getId();
 		if (bytes == null) {
 			return null;
 		}
+
 		StringBuilder sb = new StringBuilder();
 		for (byte b : bytes) {
 			String digit = Integer.toHexString(b);
@@ -78,6 +93,7 @@ final class DefaultSslInfo implements SslInfo {
 		catch (Throwable ex) {
 			throw new IllegalStateException("Failed to get SSL certificates", ex);
 		}
+
 		List<X509Certificate> result = new ArrayList<>(certificates.length);
 		for (Certificate certificate : certificates) {
 			if (certificate instanceof X509Certificate) {
@@ -87,16 +103,4 @@ final class DefaultSslInfo implements SslInfo {
 		return result.toArray(new X509Certificate[result.size()]);
 	}
 
-
-	@Override
-	@Nullable
-	public String getSessionId() {
-		return this.sessionId;
-	}
-
-	@Override
-	public X509Certificate[] getPeerCertificates() {
-		return this.peerCertificates;
-	}
-
 }

spring-web/src/main/java/org/springframework/http/server/reactive/ServerHttpRequest.java

@@ -59,16 +59,20 @@ public interface ServerHttpRequest extends HttpRequest, ReactiveHttpInputMessage
 	 * Return the remote address where this request is connected to, if available.
 	 */
 	@Nullable
-	InetSocketAddress getRemoteAddress();
+	default InetSocketAddress getRemoteAddress() {
+		return null;
+	}
 
 	/**
 	 * Return the SSL session information if the request has been transmitted
 	 * over a secure protocol including SSL certificates, if available.
-	 * @return the session information or {@code null}
+	 * @return the session information, or {@code null} if none available
 	 * @since 5.0.2
 	 */
 	@Nullable
-	SslInfo getSslInfo();
+	default SslInfo getSslInfo() {
+		return null;
+	}
 
 	/**
 	 * Return a builder to mutate properties of this request by wrapping it

spring-web/src/main/java/org/springframework/http/server/reactive/SslInfo.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.http.server.reactive;
 
 import java.security.cert.X509Certificate;
@@ -20,15 +21,22 @@ import java.security.cert.X509Certificate;
 import org.springframework.lang.Nullable;
 
 /**
+ * A holder for SSL session information.
  *
  * @author Rossen Stoyanchev
  * @since 5.0.2
  */
 public interface SslInfo {
 
+	/**
+	 * Return the SSL session id, if any
+	 */
 	@Nullable
 	String getSessionId();
 
+	/**
+	 * Return the associated SSL certificates.
+	 */
 	X509Certificate[] getPeerCertificates();
 
 }

spring-webmvc/src/main/java/org/springframework/web/servlet/config/annotation/ResourceHandlerRegistry.java

@@ -93,12 +93,11 @@ public class ResourceHandlerRegistry {
 	/**
 	 * A variant of
 	 * {@link #ResourceHandlerRegistry(ApplicationContext, ServletContext, ContentNegotiationManager)}
-	 * that also accepts the {@link UrlPathHelper} used for mapping requests
-	 * to static resources.
+	 * that also accepts the {@link UrlPathHelper} used for mapping requests to static resources.
 	 * @since 4.3.13
 	 */
 	public ResourceHandlerRegistry(ApplicationContext applicationContext, ServletContext servletContext,
-			ContentNegotiationManager contentNegotiationManager, @Nullable UrlPathHelper pathHelper) {
+			@Nullable ContentNegotiationManager contentNegotiationManager, @Nullable UrlPathHelper pathHelper) {
 
 		Assert.notNull(applicationContext, "ApplicationContext is required");
 		this.applicationContext = applicationContext;
@@ -109,13 +108,12 @@ public class ResourceHandlerRegistry {
 
 
 	/**
-	 * Add a resource handler for serving static resources based on the specified URL path
-	 * patterns. The handler will be invoked for every incoming request that matches to
-	 * one of the specified path patterns.
-	 * <p>Patterns like {@code "/static/**"} or {@code "/css/{filename:\\w+\\.css}"}
-	 * are allowed. See {@link org.springframework.util.AntPathMatcher} for more details on the
-	 * syntax.
-	 * @return A {@link ResourceHandlerRegistration} to use to further configure the
+	 * Add a resource handler for serving static resources based on the specified URL path patterns.
+	 * The handler will be invoked for every incoming request that matches to one of the specified
+	 * path patterns.
+	 * <p>Patterns like {@code "/static/**"} or {@code "/css/{filename:\\w+\\.css}"} are allowed.
+	 * See {@link org.springframework.util.AntPathMatcher} for more details on the syntax.
+	 * @return a {@link ResourceHandlerRegistration} to use to further configure the
 	 * registered resource handler
 	 */
 	public ResourceHandlerRegistration addResourceHandler(String... pathPatterns) {