Add support for HTTP method CONNECT in HttpMethod

Introduced a new constant CONNECT with reference to RFC 9110.
Updated values array and valueOf method.

Author: v-perfilev

spring-web/src/main/java/org/springframework/http/HttpMethod.java

@@ -71,6 +71,12 @@ public final class HttpMethod implements Comparable<HttpMethod>, Serializable {
 	 */
 	public static final HttpMethod DELETE = new HttpMethod("DELETE");
 
+	/**
+	 * The HTTP method {@code CONNECT}.
+	 * @see <a href="https://www.rfc-editor.org/rfc/rfc9110.html#section-9.3.6">RFC 9110, section 9.3.6</a>
+	 */
+	public static final HttpMethod CONNECT = new HttpMethod("CONNECT");
+
 	/**
 	 * The HTTP method {@code OPTIONS}.
 	 * @see <a href="https://www.rfc-editor.org/rfc/rfc9110.html#section-9.3.7">RFC 9110, section 9.3.7</a>
@@ -83,7 +89,7 @@ public final class HttpMethod implements Comparable<HttpMethod>, Serializable {
 	 */
 	public static final HttpMethod TRACE = new HttpMethod("TRACE");
 
-	private static final HttpMethod[] values = new HttpMethod[] { GET, HEAD, POST, PUT, PATCH, DELETE, OPTIONS, TRACE };
+	private static final HttpMethod[] values = new HttpMethod[] { GET, HEAD, POST, PUT, PATCH, DELETE, CONNECT, OPTIONS, TRACE };
 
 
 	private final String name;
@@ -97,7 +103,7 @@ private HttpMethod(String name) {
 	 * Returns an array containing the standard HTTP methods. Specifically,
 	 * this method returns an array containing {@link #GET}, {@link #HEAD},
 	 * {@link #POST}, {@link #PUT}, {@link #PATCH}, {@link #DELETE},
-	 * {@link #OPTIONS}, and {@link #TRACE}.
+	 * {@link #CONNECT}, {@link #OPTIONS}, and {@link #TRACE}.
 	 *
 	 * <p>Note that the returned value does not include any HTTP methods defined
 	 * in WebDav.
@@ -122,6 +128,7 @@ public static HttpMethod valueOf(String method) {
 			case "PUT" -> PUT;
 			case "PATCH" -> PATCH;
 			case "DELETE" -> DELETE;
+			case "CONNECT" -> CONNECT;
 			case "OPTIONS" -> OPTIONS;
 			case "TRACE" -> TRACE;
 			default -> new HttpMethod(method);