add host test

docs/sanic/request_data.md

@@ -88,7 +88,7 @@ The following variables are accessible as properties on `Request` objects:
 - `url`: The full URL of the request, ie: `http://localhost:8000/posts/1/?foo=bar`
 - `scheme`: The URL scheme associated with the request: `http` or `https`
 - `host`: The host associated with the request: `localhost:8080`
-- `path`: The path of the request: `/posts/1`/
+- `path`: The path of the request: `/posts/1/`
 - `query_string`: The query string of the request: `foo=bar` or a blank string `''`
 
 

sanic/request.py

@@ -149,7 +149,7 @@ class Request(dict):
     def host(self):
         # it appears that httptools doesn't return the host
         # so pull it from the headers
-        return self.headers['Host']
+        return self.headers.get('Host', '')
 
     @property
     def path(self):