Dropping the trailing backslash from URL via a rewrite policy.

[David Eaves]

I have a bunch of responder policies that use StringMaps to do a 301 redirect when users try to access certain URL’s. It works great, however I must perform two bindings on the StringMap to match the path plus the same item with a trailing backslash.

 

What I would like to do is to create a rewrite policy to remove trailing backslashes. The problem is I am unable to find any documentation or forum posts that give me enough information to figure out how to do this.

 

For a starting reference point; the following is the StringMap & Responder config that I currently have. Doing a single URL is manageable, however I have thousands, and the inability to strip the trailing backslash before hitting the responder policy forces me to double the size of my StringMap.

 

add  policy stringmap SM_WEB_service -comment "StringMap for service.web.com url responder policy."

bind policy stringmap SM_WEB_service "/example1"  "http://www.web.com/en/example1"

bind policy stringmap SM_WEB_service "/example1/" "http://www.web.com/en/example1"

bind policy stringmap SM_WEB_service "/example2"  "http://www.web.com/en/example2"

bind policy stringmap SM_WEB_service "/example2/" "http://www.web.com/en/example2"

 

add responder action RES-ACT_WEB_service redirect "HTTP.REQ.URL.MAP_STRING(\"SM_WEB_service\")" -bypassSafetyCheck YES -comment "Responder action to redirect user to URL."

 

add responder policy RES-POL_WEB_service "(HTTP.REQ.HOSTNAME.EQ(\"service.web.com\") || HTTP.REQ.HOSTNAME.EQ(\"www.service.web.com\")) && HTTP.REQ.URL.IS_STRINGMAP_KEY(\"SM_WEB_service\")" RES-ACT_WEB_service -comment "Responder policy for service.web.com URL redirection."

 

bind lb vserver VS-PRD_WEB -policyName RES-POL_WEB_service -priority 99 -gotoPriorityExpression END -type REQUEST

 

Any assistance would be greatly appreciated. If there is no way to do what I am looking for via a rewrite or modifying my responder policy I would still be grateful with any input from the community.

[Russell Vance]

I need to know how to strip trailing slashes from URLs as well.  Did you ever figure out how to do this?

[Frank Vandebergh]

Can't you use
HTTP.REQ.URL.STRIP_END_CHARS("/")

instead of current HTTP.REQ.URL   in each location ?

 

 

add responder action RES-ACT_WEB_service redirect "HTTP.REQ.URL.STRIP_END_CHARS(\"/\").MAP_STRING(\"SM_WEB_service\")" -bypassSafetyCheck YES -comment "Responder action to redirect user to URL."

 

add responder policy RES-POL_WEB_service "(HTTP.REQ.HOSTNAME.EQ(\"service.web.com\") || HTTP.REQ.HOSTNAME.EQ(\"www.service.web.com\")) && HTTP.REQ.URL.STRIP_END_CHARS(\"/\").IS_STRINGMAP_KEY(\"SM_WEB_service\")" RES-ACT_WEB_service -comment "Responder policy for service.web.com URL redirection."

[Rikus Rus]

Good solution, this solves the problem. Thank you.

[Heleno Vicente]

Did this worked for you guys? 

[Vamsi Krishna1709162168]

On 9/18/2020 at 7:22 AM, Heleno Vicente said:

Did this worked for you guys? 

Could you please be more specific where have you got stuck?

 

Thanks,

Vamsi