RoR ASCII-8bit to UTF-8 with non-latin (cyrillic) symbols in Net::HTTP.get_response.body
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I need to get some data via Net::HTTP, it works good by i recieve response in ASCII-8bit. The problem is how to encode this to utf8 and save all non-latin symbols?

With `@content.encode('utf-8', 'binary', :invalid => :replace, 
  :undef => :replace, :replace => '')` i loose all cyrillic symbols

With @content.encode('utf-8', 'binary') i get `"\xCB" from ASCII-8BIT to UTF-8` error

With @content.force_encoding("UTF-8) i get ������ instead of cyrillic symbols

I can't find answer with google search.