guarantee ordering of header map get_all (#2467)

actix-http/src/header/mod.rs

@@ -29,16 +29,14 @@ pub use http::header::{
     X_FRAME_OPTIONS, X_XSS_PROTECTION,
 };
 
-use crate::error::ParseError;
-use crate::HttpMessage;
+use crate::{error::ParseError, HttpMessage};
 
 mod as_name;
 mod into_pair;
 mod into_value;
-mod utils;
-
 pub(crate) mod map;
 mod shared;
+mod utils;
 
 #[doc(hidden)]
 pub use self::shared::*;
@@ -46,10 +44,10 @@ pub use self::shared::*;
 pub use self::as_name::AsHeaderName;
 pub use self::into_pair::IntoHeaderPair;
 pub use self::into_value::IntoHeaderValue;
-#[doc(hidden)]
-pub use self::map::GetAll;
-pub use self::map::HeaderMap;
-pub use self::utils::*;
+pub use self::map::{GetAll, HeaderMap, Removed};
+pub use self::utils::{
+    fmt_comma_delimited, from_comma_delimited, from_one_raw_str, http_percent_encode,
+};
 
 /// A trait for any object that already represents a valid header field and value.
 pub trait Header: IntoHeaderValue {
@@ -68,7 +66,7 @@ impl From<http::HeaderMap> for HeaderMap {
 }
 
 /// This encode set is used for HTTP header values and is defined at
-/// https://tools.ietf.org/html/rfc5987#section-3.2.
+/// <https://tools.ietf.org/html/rfc5987#section-3.2>.
 pub(crate) const HTTP_VALUE: &AsciiSet = &CONTROLS
     .add(b' ')
     .add(b'"')