Regular Expression Redirects in Web Server 7 not escaping special chars

Question

we are trying to add following rule in config file
<If $uri =~ "^/ViewCourse\.action\?(.*)">
NameTrans fn="redirect" url="https://$urlhost/learning/viewCourse.action?$query"
</If>
we get following error when we try to escape "." as "\." Anythought?
onfig (24578): CONF2260: Error parsing file rp-prod-obj.conf, line 45: Unable to parse expression: \. is an invalid escape sequence
config (24578): CORE3235: File server.xml line 136: Error processing element: Error processing file rp-prod-obj.conf
rp-zn-tstick2-dat: ADMIN3606: Error while reconfiguring the server.
config ( 5514): CONF2260: Error parsing file rp-prod-obj.conf, line 45: Unable to parse expression: \. is an invalid escape sequence
config ( 5514): CORE3235: File server.xml line 136: Error processing element: Error processing file rp-prod-obj.conf

Answer 1

Works for me as:
<If $uri =~ '^/ViewCourse\.action\?(.*)'>
NameTrans fn="redirect" url="https://$urlhost/learning/viewCourse.action?$query"
</If>It boils down to the difference between a ' and a ". The docs , frankly, are a bit byzantine on the difference, but it's a question of how much escaping you need to do. Single quote ('), as above, works. Your original can also work (well, I think it can ... I know the server will reconfig and/or start at least) with more escaping:
{code}<If $uri =~ "^/ViewCourse\\.action\\?(.*)">
NameTrans fn="redirect" url="https://$urlhost/learning/viewCourse.action?$query"
</If>{code}
I'm not positive the extra escaping is needed on the question mark. Your mileage may vary. Warranty void in most states. Etc.