http_type/http_version/
enum.rs

1/// Represents the HTTP version used in the request or response.
2#[derive(Debug, Clone, PartialEq, Eq)]
3pub enum HttpVersion {
4    /// HTTP version 0.9
5    HTTP0_9,
6    /// HTTP version 1.0
7    HTTP1_0,
8    /// HTTP version 1.1
9    HTTP1_1,
10    /// HTTP version 2.0
11    HTTP2,
12    /// HTTP version 3.0
13    HTTP3,
14    /// Unknown version
15    Unknown(String),
16}