Detect Undertow RequestTooBigException message in handleParseFailure

Closes gh-32549

Author: jhoeller

spring-web/src/main/java/org/springframework/web/multipart/support/StandardMultipartHttpServletRequest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2023 the original author or authors.
+ * 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.
@@ -118,7 +118,8 @@ protected void handleParseFailure(Throwable ex) {
 			String msg = cause.getMessage();
 			if (msg != null) {
 				msg = msg.toLowerCase();
-				if (msg.contains("exceed") && (msg.contains("size") || msg.contains("length"))) {
+				if ((msg.contains("exceed") && (msg.contains("size") || msg.contains("length"))) ||
+						(msg.contains("request") && (msg.contains("big") || msg.contains("large")))) {
 					throw new MaxUploadSizeExceededException(-1, ex);
 				}
 			}

spring-web/src/test/java/org/springframework/web/multipart/support/StandardMultipartHttpServletRequestTests.java

@@ -123,6 +123,14 @@ void jetty12MaxLengthExceededException() {
 				.isThrownBy(() -> requestWithException(ex)).withCause(ex);
 	}
 
+	@Test  // gh-32549
+	void undertowRequestTooBigException() {
+		IOException ex = new IOException("Connection terminated as request was larger than 10000");
+
+		assertThatExceptionOfType(MaxUploadSizeExceededException.class)
+				.isThrownBy(() -> requestWithException(ex)).withCause(ex);
+	}
+
 
 	private static StandardMultipartHttpServletRequest requestWithPart(String name, String disposition, String content) {
 		MockHttpServletRequest request = new MockHttpServletRequest();
@@ -142,4 +150,14 @@ public Collection<Part> getParts() throws ServletException {
 		return new StandardMultipartHttpServletRequest(request);
 	}
 
+	private static StandardMultipartHttpServletRequest requestWithException(IOException ex) {
+		MockHttpServletRequest request = new MockHttpServletRequest() {
+			@Override
+			public Collection<Part> getParts() throws IOException {
+				throw ex;
+			}
+		};
+		return new StandardMultipartHttpServletRequest(request);
+	}
+
 }