Could you please consider backporting the properties change that were introduced in Tomcat 9? My immediate need is setAcceptCount on AbstractProtocol that is called setBacklog in the tomcat 8.5 API. Having two different method signature requires me to use reflection in order to support Tomcat 8.5 and Tomcat 9 at the same time in Spring Boot. As we want to support Java 9 as well in that release, using Tomcat 9 is required but we'd like to compile the code against the 8.5 API. There are other candidates here: https://svn.apache.org/viewvc?view=revision&revision=1767250
Fixed in: - 8.5.x for 8.5.16 onwards There should be a snapshot (i.e. not an official release) with the fix for you to test against available from the ASF snapshot repo in a few minutes.