Fix BZ 69471

Log instances of CloseNowException caught by
ApplicationDispatcher.invoke() at debug level rather than error level as
they are very likely to have been caused by a client disconnection or
similar I/O issue.

https://bz.apache.org/bugzilla/show_bug.cgi?id=69471

java/org/apache/catalina/core/ApplicationDispatcher.java

@@ -43,6 +43,7 @@
 import org.apache.catalina.connector.Response;
 import org.apache.catalina.connector.ResponseFacade;
 import org.apache.coyote.BadRequestException;
+import org.apache.coyote.CloseNowException;
 import org.apache.tomcat.util.ExceptionUtils;
 import org.apache.tomcat.util.res.StringManager;
 
@@ -538,7 +539,7 @@ private void invoke(ServletRequest request, ServletResponse response, State stat
                 filterChain.doFilter(request, response);
             }
             // Servlet Service Method is called by the FilterChain
-        } catch (BadRequestException e) {
+        } catch (BadRequestException | CloseNowException e) {
             ioException = e;
         } catch (IOException e) {
             wrapper.getLogger().error(sm.getString("applicationDispatcher.serviceException", wrapper.getName()), e);

webapps/docs/changelog.xml

@@ -180,6 +180,12 @@
         some headers, as per RFC 9110, section 9.3.2, that are present in a GET
         request that are not present in the equivalent HEAD request. (markt)
       </fix>
+      <fix>
+        <bug>69471</bug>: Log instances of <code>CloseNowException</code> caught
+        by <code>ApplicationDispatcher.invoke()</code> at debug level rather
+        than error level as they are very likely to have been caused by a client
+        disconnection or similar I/O issue. (markt)
+      </fix>
     </changelog>
   </subsection>
   <subsection name="Coyote">