Remove accidental backport of 6.1 class

spring-web/src/main/java/org/springframework/web/util/DisconnectedClientHelper.java

@@ -1,96 +0,0 @@
-/*
- * Copyright 2002-2024 the original author or authors.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      https://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.springframework.web.util;
-
-import java.util.Set;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
-
-import org.springframework.core.NestedExceptionUtils;
-import org.springframework.util.Assert;
-
-/**
- * Utility methods to assist with identifying and logging exceptions that indicate
- * the client has gone away. Such exceptions fill logs with unnecessary stack
- * traces. The utility methods help to log a single line message at DEBUG level,
- * and a full stacktrace at TRACE level.
- *
- * @author Rossen Stoyanchev
- * @since 6.1
- */
-public class DisconnectedClientHelper {
-
-	private static final Set<String> EXCEPTION_PHRASES =
-			Set.of("broken pipe", "connection reset by peer");
-
-	private static final Set<String> EXCEPTION_TYPE_NAMES =
-			Set.of("AbortedException", "ClientAbortException",
-					"EOFException", "EofException", "AsyncRequestNotUsableException");
-
-	private final Log logger;
-
-
-	public DisconnectedClientHelper(String logCategory) {
-		Assert.notNull(logCategory, "'logCategory' is required");
-		this.logger = LogFactory.getLog(logCategory);
-	}
-
-
-	/**
-	 * Check via  {@link #isClientDisconnectedException} if the exception
-	 * indicates the remote client disconnected, and if so log a single line
-	 * message when DEBUG is on, and a full stacktrace when TRACE is on for
-	 * the configured logger.
- 	 */
-	public boolean checkAndLogClientDisconnectedException(Throwable ex) {
-		if (isClientDisconnectedException(ex)) {
-			if (logger.isTraceEnabled()) {
-				logger.trace("Looks like the client has gone away", ex);
-			}
-			else if (logger.isDebugEnabled()) {
-				logger.debug("Looks like the client has gone away: " + ex +
-						" (For a full stack trace, set the log category '" + logger + "' to TRACE level.)");
-			}
-			return true;
-		}
-		return false;
-	}
-
-	/**
-	 * Whether the given exception indicates the client has gone away.
-	 * Known cases covered:
-	 * <ul>
-	 * <li>ClientAbortException or EOFException for Tomcat
-	 * <li>EofException for Jetty
-	 * <li>IOException "Broken pipe" or "connection reset by peer"
-	 * </ul>
-	 */
-	public static boolean isClientDisconnectedException(Throwable ex) {
-		String message = NestedExceptionUtils.getMostSpecificCause(ex).getMessage();
-		if (message != null) {
-			String text = message.toLowerCase();
-			for (String phrase : EXCEPTION_PHRASES) {
-				if (text.contains(phrase)) {
-					return true;
-				}
-			}
-		}
-		return EXCEPTION_TYPE_NAMES.contains(ex.getClass().getSimpleName());
-	}
-
-}