http/
version.rs

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1//! HTTP version
2//!
3//! This module contains a definition of the `Version` type. The `Version`
4//! type is intended to be accessed through the root of the crate
5//! (`http::Version`) rather than this module.
6//!
7//! The `Version` type contains constants that represent the various versions
8//! of the HTTP protocol.
9//!
10//! # Examples
11//!
12//! ```
13//! use http::Version;
14//!
15//! let http11 = Version::HTTP_11;
16//! let http2 = Version::HTTP_2;
17//! assert!(http11 != http2);
18//!
19//! println!("{:?}", http2);
20//! ```
21
22use std::fmt;
23
24/// Represents a version of the HTTP spec.
25#[derive(PartialEq, PartialOrd, Copy, Clone, Eq, Ord, Hash)]
26pub struct Version(Http);
27
28impl Version {
29    /// `HTTP/0.9`
30    pub const HTTP_09: Version = Version(Http::Http09);
31
32    /// `HTTP/1.0`
33    pub const HTTP_10: Version = Version(Http::Http10);
34
35    /// `HTTP/1.1`
36    pub const HTTP_11: Version = Version(Http::Http11);
37
38    /// `HTTP/2.0`
39    pub const HTTP_2: Version = Version(Http::H2);
40
41    /// `HTTP/3.0`
42    pub const HTTP_3: Version = Version(Http::H3);
43}
44
45#[derive(PartialEq, PartialOrd, Copy, Clone, Eq, Ord, Hash)]
46enum Http {
47    Http09,
48    Http10,
49    Http11,
50    H2,
51    H3,
52    __NonExhaustive,
53}
54
55impl Default for Version {
56    #[inline]
57    fn default() -> Version {
58        Version::HTTP_11
59    }
60}
61
62impl fmt::Debug for Version {
63    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
64        use self::Http::*;
65
66        f.write_str(match self.0 {
67            Http09 => "HTTP/0.9",
68            Http10 => "HTTP/1.0",
69            Http11 => "HTTP/1.1",
70            H2 => "HTTP/2.0",
71            H3 => "HTTP/3.0",
72            __NonExhaustive => unreachable!(),
73        })
74    }
75}
http/version.rs

http/
version.rs
