Request: impl Into, AsRef, AsMut to http::Request

Refs: #465

Author: Fishrock123

src/request.rs

@@ -308,6 +308,18 @@ impl<State> Request<State> {
     }
 }
 
+impl<State> AsMut<http::Request> for Request<State> {
+    fn as_mut(&mut self) -> &mut http::Request {
+        &mut self.request
+    }
+}
+
+impl<State> AsRef<http::Request> for Request<State> {
+    fn as_ref(&self) -> &http::Request {
+        &self.request
+    }
+}
+
 impl<State> Read for Request<State> {
     fn poll_read(
         mut self: Pin<&mut Self>,
@@ -318,6 +330,12 @@ impl<State> Read for Request<State> {
     }
 }
 
+impl<State> Into<http::Request> for Request<State> {
+    fn into(self) -> http::Request {
+        self.request
+    }
+}
+
 // NOTE: From cannot be implemented for this conversion because `State` needs to
 // be constrained by a type.
 impl<State: Send + Sync + 'static> Into<Response> for Request<State> {