After upgrading to Gateway 10.1 one application which can not connect to gateway 10.1
The error in the log is
The HTTP header line [scope0x0d] does not conform to RFC 7230
Release : 10.1
The application was sending a invalid scope header which did not conform to the RFC .
You can tell tomcat to ignore this incorrect headers by setting
rejectIllegalHeader = false
in the listen port advanced properties.
The newer tomcat 9.x libraries used in Gateway 10.1 are much more strict in RFC compliancy as the older 7.x used in older gateway versions.