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Spencer_Aranda's avatar
Spencer_Aranda
Icon for Altocumulus rankAltocumulus
Nov 18, 2022

Help deleting header name that contains curly braces

Hi Just a quick question.  I was asked to use the F5 to remove a header name as follows {esbsoapheader}userName The header value was just fine.  But I was asked to remove {esbsoapheader} from heade...
application delivery
  • Spencer_Aranda's avatar
    Spencer_Aranda
    Nov 18, 2022

    I think I just figured it out guys Mohamed_Ahmed_Kansoh  CA_Valli 

    Paste this and run it.  It worked out for me.  Now any of you can explain why this works??  Is this a bug with F5?  At least it seems to me.  If it is, how can I let them know so they can fix it.

    when HTTP_REQUEST {
  if { [HTTP::uri] eq "/demo2" } {
    HTTP::header insert "{esbsoapheader}userName" "spencer"
    foreach aHeader [HTTP::header names] {
      log local0. "HTTP Request Headers: $aHeader: [HTTP::header value $aHeader]"
    }
    log local0. "***************REMOVING BAD HEADER************"
    HTTP::header remove "\\{esbsoapheader\\}userName"
    foreach aHeader [HTTP::header names] {
      log local0. "HTTP Request Headers: $aHeader: [HTTP::header value $aHeader]"
    }
  }
}
Spencer_Aranda's avatar
Spencer_Aranda
Icon for Altocumulus rankAltocumulus

CA_Valli  Do you know why it is not possible to remove "{esbsoapheader}userName"?  Is it because the header name is using characters that are not legal to use in a header name?  If so, do you have some resource that I can read to confirm?

Mohamed_Ahmed_Kansoh's avatar
Mohamed_Ahmed_Kansoh
Icon for MVP rankMVP
Nov 18, 2022

it does not work with me , 
I meant the iRule script is correct and accepted , I thought you have a problem with that. 
No I have performed your script on my test lab and I saw the TCL error: 

Let me see how can I remove it , if I found a workaround , definitely I will share it with you 

Regards 

  • Mohamed_Ahmed_Kansoh's avatar
    Mohamed_Ahmed_Kansoh
    Icon for MVP rankMVP
    Nov 18, 2022

    Spencer_Aranda , 
    you are right , 
    the issue exactly with remove and {} , I replaced {} with // and it works well. 
    I think you must change the inserted header and not use {}. 
    I tried to put this header in variale , and delete this variable but without Luck. 
    what a strange thing !! 
    why irule executed well without errors , and couldn’t perform the task of delete.