Add support for idn

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Jetforce Changelog
 
+### v0.8.0 (Unreleased)
+
+#### Spec Changes
+
+- Added support for international domain names using IDN encoding.
+
 ### v0.7.0 (2020-12-06)
 
 #### Spec Changes

README.md

@@ -102,6 +102,10 @@ receive traffic from. For example, if your jetforce server is running on
 that do not match this hostname will be refused by the server, including
 URLs that use a direct IP address such as "gemini://174.138.124.169".
 
+IDNs (domain names that contain unicode characters) should be defined using
+their ASCII punycode representation. For example, the domain name
+*café.mozz.us* should be represented as ``--hostname xn--caf-dma.mozz.us``.
+
 ### Setting the ``host``
 
 The server's host should be set to the local socket that you want to

jetforce/app/base.py

@@ -62,7 +62,12 @@ class Request:
         if self.scheme == "gemini" and url_parts.username:
             raise ValueError("Invalid userinfo component")
 
-        self.hostname = url_parts.hostname
+        # Convert domain names to punycode for compatibility with URLs that
+        # contain encoded IDNs (follows RFC 3490).
+        hostname = url_parts.hostname
+        hostname = hostname.encode("idna").decode("ascii")
+
+        self.hostname = hostname
         self.port = url_parts.port
 
         self.path = unquote(url_parts.path)