https://bz.apache.org/bugzilla/show_bug.cgi?id=64947
--- Comment #2 from Peter Major <majorpe...@gmail.com> --- Sadly I don't have access to the source code (found it when setting up a third party reverse proxy product). The reason why upgradeGroupInfo is null, is because AbstractHttp11Protocol#getUpgradeGroupInfo is called with a null upgradeProtocol. The reason why upgradeProtocol is null is that Request#upgrade populates it with response.getHeader("upgrade"), and that is being null. Was that meant to be request.getHeader instead? -- You are receiving this mail because: You are the assignee for the bug. --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org