HTTP::Collect results in garbled HTTP::Payload when using non-english characters

[bc1]

Hi there,

I'm using an irule to collect a POSTed payload, manipulate the content and then POST on to the back-end pool, however when non-english characters are used then the collected payload is garbled even before I start any processing:

If I post for example:

â ê î ô û á é í ó ú ü ñ

I get the following in HTTP_REQUEST_DATA:

â ê î ô û á é í ó ú ü ñ

I've looked through devcentral but the examples don't seem to relate to this or else they relate to the URI .. Is there a best-practice on how to correct this?

Many thanks!

when HTTP_REQUEST {
  HTTP::collect 1048576
}

when HTTP_REQUEST_DATA {
  log local0. [HTTP::payload]
}

[Kai_Wilke]

Hi bc,

the programming language of iRules is TCL which uses always UTF-8 to represent a string. If your input contains highbit ASCII charcters (e.g. Win1252, Latin-1, ISO-8859-1) certain TCL commands will silently change the used encoding.

To reformat UTF-8 back to its ASCII representation you could try a

set output [binary format A* $input]

. By doing so the UTF-8 encoded string representation of the

$input

will shimmer to a binary

$output

which is encoded in plain-ASCII.

Cheers, Kai