implementation

src/version.rs

@@ -0,0 +1,29 @@
+//! # HTTP Versions
+//!
+//! Instead of relying on typo-prone Strings, use expected HTTP versions as
+//! the `HttpVersion` enum.
+use std::fmt;
+
+/// Represents a version of the HTTP spec.
+#[deriving(PartialEq, PartialOrd)]
+pub enum HttpVersion {
+    /// `HTTP/0.9`
+    Http09,
+    /// `HTTP/1.0`
+    Http10,
+    /// `HTTP/1.1`
+    Http11,
+    /// `HTTP/2.0`
+    Http20
+}
+
+impl fmt::Show for HttpVersion {
+    fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            Http09 => "HTTP/0.9",
+            Http10 => "HTTP/1.0",
+            Http11 => "HTTP/1.1",
+            Http20 => "HTTP/2.0",
+        }.fmt(fmt)
+    }
+}