support vhosts in static routes

sanic/app.py

@@ -354,13 +354,13 @@ class Sanic:
     # Static Files
     def static(self, uri, file_or_directory, pattern=r'/?.+',
                use_modified_since=True, use_content_range=False,
-               stream_large_files=False, name='static'):
+               stream_large_files=False, name='static', host=None):
         """Register a root to serve files from. The input can either be a
         file or a directory. See
         """
         static_register(self, uri, file_or_directory, pattern,
                         use_modified_since, use_content_range,
-                        stream_large_files, name)
+                        stream_large_files, name, host)
 
     def blueprint(self, blueprint, **options):
         """Register a blueprint on the application.

sanic/static.py

@@ -18,7 +18,7 @@ from sanic.response import file, file_stream, HTTPResponse
 
 def register(app, uri, file_or_directory, pattern,
              use_modified_since, use_content_range,
-             stream_large_files, name='static'):
+             stream_large_files, name='static', host=None):
     # TODO: Though sanic is not a file server, I feel like we should at least
     #       make a good effort here.  Modified-since is nice, but we could
     #       also look into etags, expires, and caching
@@ -122,4 +122,4 @@ def register(app, uri, file_or_directory, pattern,
     if not name.startswith('_static_'):
         name = '_static_{}'.format(name)
 
-    app.route(uri, methods=['GET', 'HEAD'], name=name)(_handler)
+    app.route(uri, methods=['GET', 'HEAD'], name=name, host=host)(_handler)