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Forum Discussion

Brad_Otlin's avatar
Brad_Otlin
Ret. Employee
May 08, 2013
Solved

Reference an iRule variable in an HTML iFile response

I have a sorry page iRule that serves an html sorry page if no servers are left in the pool and serves another page if a 404 or 5xx is encountered. The 404/5xx portion of the irule tries each server...
application delivery
dev
devops
iRules
  • spark_86682's avatar
    spark_86682
    May 08, 2013
    I think the subst Tcl command is closest to what you want: 

    
HTTP::respond 200 content  [subst -nocommands -nobackslashes [ifile get error_html]]

    Very clean, and much safer than using eval.
Joel_Moses's avatar
Joel_Moses
Icon for Nimbostratus rankNimbostratus
May 13, 2013
Seconded with Spark. I always use [subst -nobackslashes [ifile get ifile_name]] for this purpose. It works just fine for dynamically replacing the variables and commands into the page text that you've stored in the iFile.