impl `From` for `Cow<'static, [u8]>` for `Binary`

src/body.rs

@@ -1,5 +1,6 @@
 use bytes::{Bytes, BytesMut};
 use futures::Stream;
+use std::borrow::Cow;
 use std::sync::Arc;
 use std::{fmt, mem};
 
@@ -194,6 +195,15 @@ impl From<Vec<u8>> for Binary {
     }
 }
 
+impl From<Cow<'static, [u8]>> for Binary {
+    fn from(b: Cow<'static, [u8]>) -> Binary {
+        match b {
+            Cow::Borrowed(s) => Binary::Slice(s),
+            Cow::Owned(vec) => Binary::Bytes(Bytes::from(vec)),
+        }
+    }
+}
+
 impl From<String> for Binary {
     fn from(s: String) -> Binary {
         Binary::Bytes(Bytes::from(s))