pass header names by ref

Author: yoshuawuyts

src/headers/header_name.rs

@@ -63,6 +63,12 @@ impl FromStr for HeaderName {
     }
 }
 
+impl From<&HeaderName> for HeaderName {
+    fn from(value: &HeaderName) -> HeaderName {
+        value.clone()
+    }
+}
+
 impl<'a> From<&'a str> for HeaderName {
     fn from(value: &'a str) -> Self {
         Self::from_str(value).unwrap()
@@ -134,4 +140,10 @@ mod tests {
         // Must validate regardless of casing.
         assert_eq!(static_header, &String::from("Hello"));
     }
+
+    #[test]
+    fn pass_name_by_ref() {
+        let mut res = crate::Response::new(200);
+        res.insert_header(&crate::headers::HOST, "127.0.0.1");
+    }
 }

src/headers/header_value.rs

@@ -1,3 +1,4 @@
+use std::convert::TryFrom;
 use std::fmt::{self, Display};
 use std::str::FromStr;
 
@@ -83,7 +84,7 @@ impl FromStr for HeaderValue {
     }
 }
 
-impl<'a> std::convert::TryFrom<&'a str> for HeaderValue {
+impl<'a> TryFrom<&'a str> for HeaderValue {
     type Error = Error;
 
     fn try_from(value: &'a str) -> Result<Self, Self::Error> {