Add the URI in the redirect URL when the HTTP Response is 404 code

[SS11]

If user trying to access any page/item which is not present (404) then user should be redirected to home page of site like test123/?abcd=<requested item>

e.g. test123/xyz (HTTP-404) to test123/?abcd=xyz

How to insert the URI in this Irule.

when HTTP_RESPONSE {

 if { [HTTP::status] == 404} {

  HTTP::redirect "http://test123/?abcd="

 }

}

[Enes_Afsin_Al]

Hi SS1,

Request : https://www.example.com/path1/path2?param=value

Host : www.example.com

Uri : /path1/path2?param=value

Path : /path1/path2

Query : param=value

https://clouddocs.f5.com/api/irules/HTTP__host.html

https://clouddocs.f5.com/api/irules/HTTP__uri.html

https://clouddocs.f5.com/api/irules/HTTP__path.html

https://clouddocs.f5.com/api/irules/HTTP__query.html

when HTTP_REQUEST {
	set uri [string trimleft [HTTP::uri] "/"]
}
 
when HTTP_RESPONSE {
	if { [HTTP::status] == 404} {
		HTTP::redirect "http://test123/?abcd=$uri"
	}
}

You need trim first slash.

https://devcentral.f5.com/s/articles/irules-101-14-tcl-string-commands-part-2

[SS11]

Its redirecting to

https://test123/?abcd=xyz/1234/notfound.aspx?item=%2fdfbglskbvksdfbvlk&user=extranet%5cAnonymous&sit...

fdfbglskbvksdfbvlk URI appened in redirect URL but it should be https://test123/?abcd=fdfbglskbvksdfbvlk

[Enes_Afsin_Al]

If you want redirect to "https://test123/?abcd=xyz/1234/notfound.aspx"

when HTTP_REQUEST {
	set path [string trimleft [HTTP::path] "/"]
}
 
when HTTP_RESPONSE {
	if { [HTTP::status] == 404} {
		HTTP::redirect "http://test123/?abcd=$path"
	}
}

If you want redirect to "https://test123/?abcd=xyz"

when HTTP_REQUEST {
	set val [getfield [HTTP::path] / 2]
}
 
when HTTP_RESPONSE {
	if { [HTTP::status] == 404} {
		HTTP::redirect "http://test123/?abcd=$val"
	}
}

If you want redirect to "https://test123/?abcd=fdfbglskbvksdfbvlk"

when HTTP_REQUEST {
	set val [URI::query [HTTP::uri] item]
}
 
when HTTP_RESPONSE {
	if { [HTTP::status] == 404} {
		HTTP::redirect "http://test123/?abcd=$val"
	}
}