Make sure request's original_url is UTF-8

CHANGELOG.md

@@ -10,7 +10,7 @@ Contributors: please follow the recommendations outlined at [keepachangelog.com]
 - Fixed assets symlinking to correctly use filenames with spaces. Begining in [#510](https://github.com/shakacode/react_on_rails/pull/510), ending in [#513](https://github.com/shakacode/react_on_rails/pull/513) by [dzirtusss](https://github.com/dzirtusss) 
 - Added authenticityToken() and authenticityHeaders() javascript helpers for easier use when working with CSRF protection tag generated by Rails [#517](https://github.com/shakacode/react_on_rails/pull/517) by [dzirtusss](https://github.com/dzirtusss) 
 - Updated JavaScript error handling on the client side from catching internally to passing through to the browser [#521](https://github.com/shakacode/react_on_rails/pull/521) by [dzirtusss](https://github.com/dzirtusss) 
-
+- Check encoding of request's original URL and force it to UTF-8 by [lucke84](https://github.com/lucke84)
 
 ## [6.0.5] - 2016-07-11
 ##### Added

app/helpers/react_on_rails_helper.rb

@@ -351,14 +351,22 @@ def rails_context(server_side:)
         i18nDefaultLocale: I18n.default_locale
       }
       if request.present?
+        # Check for encoding of the request's original_url and try to force-encoding the
+        # URLs as UTF-8. This situation can occur in browsers that do not encode the
+        # entire URL as UTF-8 already, mostly on the Windows platform (IE11 and lower).
+        original_url_normalized = request.original_url
+        if original_url_normalized.encoding.to_s == "ASCII-8BIT"
+          original_url_normalized = original_url_normalized.force_encoding("ISO-8859-1").encode("UTF-8")
+        end
+
         # Using Addressable instead of standard URI to better deal with
         # non-ASCII characters (see https://github.com/shakacode/react_on_rails/pull/405)
-        uri = Addressable::URI.parse(request.original_url)
+        uri = Addressable::URI.parse(original_url_normalized)
         # uri = Addressable::URI.parse("http://foo.com:3000/posts?id=30&limit=5#time=1305298413")
 
         result.merge!(
           # URL settings
-          href: request.original_url,
+          href: uri.to_s,
           location: "#{uri.path}#{uri.query.present? ? "?#{uri.query}" : ''}",
           scheme: uri.scheme, # http
           host: uri.host, # foo.com