Impossible to parse cyrillic Uri

Issue by RomanIakovlev Tuesday Feb 02, 2016 at 19:17 GMT Originally opened as https://github.com/akka/akka/issues/19677

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Consider this:

"com.typesafe.akka" %% "akka-http-experimental" % "2.4.2-RC1"

import akka.http.scaladsl.model.Uri

scala> Uri("http://президент.рф/", Uri.ParsingMode.Relaxed)
akka.http.scaladsl.model.IllegalUriException: Illegal URI reference: Invalid input 'п', expected 'EOI', '#', '?', path-abempty or authority (line 1, column 8): http://президент.рф/
       ^
  at akka.http.scaladsl.model.IllegalUriException$.apply(ErrorInfo.scala:40)
  at akka.http.scaladsl.model.Uri$.fail(Uri.scala:741)
  at akka.http.impl.model.parser.UriParser.fail(UriParser.scala:62)
  at akka.http.impl.model.parser.UriParser.parseUriReference(UriParser.scala:33)
  at akka.http.scaladsl.model.Uri$.apply(Uri.scala:209)
  at akka.http.scaladsl.model.Uri$.apply(Uri.scala:199)
  ... 43 elided

Any insights on how to tackle this?