I'm afraid this question is OT -- not really Perl, but web basics.

With WWW::Mechanize, I could get the form from page with e.g. form_name, then just set required charset (accept_charset) and then it all "automatically" worked as expected: set input fields text values (field) using usual "normal" (Unicode) Perl strings, click submit button, and job's done.

Now I'm moving from WWW::Mechanize to Net::Async::HTTP, its POST method accepts array reference of "field_name" => "value" pairs. Here I tried different combinations of encoding text field values (or not encoding at all) and also providing things like

content_type => 'application/x-www-form-urlencoded; charset=utf-8',

[download]

as additional %args to POST, but to no avail: reading back what I posted, from server, I'm getting different sorts of garbage, double-encoded text from what I guess.

How to POST text with correct charset? I suspect the answer to this is very simple and obvious to anyone with basic knowledge of web technologies, but not to me, alas.

5 min edit: the charset to use is actually "koi8-r"; that's what server expects, what's working with WWW:Mechanize, and what I'm trying (but no success) with Net::Async::HTTP in the 1st place.

In reply to How to set charset when POSTing? by vr

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