Forum Discussion

Willy's avatar
Willy
Icon for Nimbostratus rankNimbostratus
Feb 09, 2016

TCL error :Prerequisite operation not in progress (line ...

I have an iRule that looks like this :   when HTTP_REQUEST { if {[HTTP::path] eq "/"} { HTTP::uri "/newpath" pool website-pool} }   It seems to do his job, but sometimes the next error appear...
application delivery
ASM Advanced WAF
iRules
tcl error
url rewrite
arpydays's avatar
arpydays
Icon for Nimbostratus rankNimbostratus
Feb 18, 2016

Looks like you may have ASM enabled on the VS, which would require HTTP profile. You could try disabling ASM as per below;

when HTTP_REQUEST {

  if {([HTTP::uri] starts_with "/partinsert") and ([string tolower [HTTP::header Upgrade]] contains "websocket")}{
    log local0. "websocket detected"
    HTTP::disable 
    ASM::disable  
  }  else {
    HTTP::uri "/partinsert[HTTP::uri]"
  }   
}