iRule for URI 'Percent encoding' doesn't work

Hi Guys,

 

 

We use different iRules in the same VS with the same event triggers. This should be possible in SW-Vers. 12.1.2.

 

The functions are different, of course.

 

So the 1st iRule is generally installed in many VSn and the 2nd iRule is specifically only for one VS.

 

the problem:

 

in an URI of an http-request are represented European ASCII special characters with "Percent-encoding" (e.g. '%C3%9F' for character 'ß' or '%C3%BC' for character 'ü').

 

For the correct translation of ASCII special characters in the URI we use the 2nd iRule. We want to use the 'URI :: decode' function for correction.

 

We have the following problem:

 

It seems as if the rule works fine and the function is executed (I see the processing run in the log-file) but the request to the poolmember transfers the original uri ( I see this in the tcpdump and in the server-log-file).

 

What could be the issue? What's wrong on the setting?

 

Any ideas everyone?

 

• The iRule:

   

  when HTTP_REQUEST {

   

  log local0. "Original-URI: [HTTP::uri]"

   

  log local0. "Decode-URI: [URI::decode [HTTP::uri]]"

   

  HTTP::uri [URI::decode [HTTP::uri]]

   

  log local0. "Ausgabe-URI: [HTTP::uri]"

   

  if { ( [HTTP::header Authorization] starts_with "Digest ," ) } {

   

  HTTP::header replace "Authorization" "Digest [string range [HTTP::header Authorization] 8 end]"

   

  }

   

  if { ( [HTTP::header Content-Type] equals "application/x-www-form-urlencoded" ) } {

   

  HTTP::header replace "Content-Type" "text/xml"

   

  }

   

  switch -glob [string tolower [HTTP::path]] {

   

  "/monitor/" {

   

  return

   

  }

   

  "/manager/" {

   

  reject

   

  }

   

  default {

   

  return

   

  }

   

  }

   

  }

   

  when HTTP_REQUEST_SEND {

   

  clientside {

   

  HTTP::header replace Host "[IP::server_addr]:[TCP::server_port]"

   

  }

   

  }

   

• Logging the irule to the ltm-logfile:

   

• Jun 2 08:17:06 inwclb26t2 info tmm4[22109]: Rule /Common/rule_url_rewrite_tui2-mbbservices04.audi-connect.de : Original-URI: /mbb/poi/v2/?key=K%C3%BCnstler&lan=de_DE&lat=48.7863736900761&lon=11.394827225496007&num=10&index=0&radius=500&session=8871223&hu_region=eu_rdw&implicitLocation=n

   

• Jun 2 08:17:06 inwclb26t2 info tmm4[22109]: Rule /Common/rule_url_rewrite_tui2-mbbservices04.audi-connect.de : Decode-URI: /mbb/poi/v2/?key=Künstler&lan=de_DE&lat=48.7863736900761&lon=11.394827225496007&num=10&index=0&radius=500&session=8871223&hu_region=eu_rdw&implicitLocation=n
• Jun 2 08:17:06 inwclb26t2 info tmm4[22109]: Rule /Common/rule_url_rewrite_tui2-mbbservices04.audi-connect.de : Ausgabe-URI: /mbb/poi/v2/?key=Künstler&lan=de_DE&lat=48.7863736900761&lon=11.394827225496007&num=10&index=0&radius=500&session=8871223&hu_region=eu_rdw&implicitLocation=n

• Tcpdump towards poolmember:

GET /mbb/poi/v2/?key=K..nstler&lan=de_DE&lat=48.7863736900761&lon=11.394827225496007&num=10&index=0&radius=500&session=8871223&hu_region=eu_rdw&implicitLocation=n HTTP/1.1

 

User-Agent: JavaJ2ME Foundation Specification v1.1

 

Host: 10.242.80.61:18581

 

Connection: keep-alive

 

Authorization: Digest qop=auth, uri="/mbb/poi/v2/?key=K%C3%BCnstler&lan=de_DE&lat=48.7863736900761&lon=11.394827225496007&num=10&index=0&radius=500&session=8871223&hu_region=eu_rdw&implicitLocation=n", response="44ddd10666390112fa3a26f999e617ce", nc=00000005, username=" xxx ", opaque=" xxx ", realm="AudiT1Realm", nonce=" xxx ", algorithm="MD5", cnonce=" xxx "

 

Accept-Encoding: gzip

 

Cookie: LBCOOKIE=1028715018.38216.0000

 

Forwarded-Mandant: INET

 

X-Forwarded-Host: xxx

 

X-Forwarded-For: xxx

 

X-Forwarded-Proto: https

 

Thx in advance - Thomas