| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/h2-0.3.19/src/hpack/header.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>header.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../h2/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../h2/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use super</span>::{DecoderError, NeedMore}; |
| <span class="kw">use </span><span class="kw">crate</span>::ext::Protocol; |
| |
| <span class="kw">use </span>bytes::Bytes; |
| <span class="kw">use </span>http::header::{HeaderName, HeaderValue}; |
| <span class="kw">use </span>http::{Method, StatusCode}; |
| <span class="kw">use </span>std::fmt; |
| |
| <span class="doccomment">/// HTTP/2 Header |
| </span><span class="attribute">#[derive(Debug, Clone, Eq, PartialEq)] |
| </span><span class="kw">pub enum </span>Header<T = HeaderName> { |
| Field { name: T, value: HeaderValue }, |
| <span class="comment">// TODO: Change these types to `http::uri` types. |
| </span>Authority(BytesStr), |
| Method(Method), |
| Scheme(BytesStr), |
| Path(BytesStr), |
| Protocol(Protocol), |
| Status(StatusCode), |
| } |
| |
| <span class="doccomment">/// The header field name |
| </span><span class="attribute">#[derive(Debug, Clone, Eq, PartialEq, Hash)] |
| </span><span class="kw">pub enum </span>Name<<span class="lifetime">'a</span>> { |
| Field(<span class="kw-2">&</span><span class="lifetime">'a </span>HeaderName), |
| Authority, |
| Method, |
| Scheme, |
| Path, |
| Protocol, |
| Status, |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| #[derive(Clone, Eq, PartialEq, Default)] |
| </span><span class="kw">pub struct </span>BytesStr(Bytes); |
| |
| <span class="kw">pub fn </span>len(name: <span class="kw-2">&</span>HeaderName, value: <span class="kw-2">&</span>HeaderValue) -> usize { |
| <span class="kw">let </span>n: <span class="kw-2">&</span>str = name.as_ref(); |
| <span class="number">32 </span>+ n.len() + value.len() |
| } |
| |
| <span class="kw">impl </span>Header<<span class="prelude-ty">Option</span><HeaderName>> { |
| <span class="kw">pub fn </span>reify(<span class="self">self</span>) -> <span class="prelude-ty">Result</span><Header, HeaderValue> { |
| <span class="kw">use </span><span class="self">self</span>::Header::<span class="kw-2">*</span>; |
| |
| <span class="prelude-val">Ok</span>(<span class="kw">match </span><span class="self">self </span>{ |
| Field { |
| name: <span class="prelude-val">Some</span>(n), |
| value, |
| } => Field { name: n, value }, |
| Field { name: <span class="prelude-val">None</span>, value } => <span class="kw">return </span><span class="prelude-val">Err</span>(value), |
| Authority(v) => Authority(v), |
| Method(v) => Method(v), |
| Scheme(v) => Scheme(v), |
| Path(v) => Path(v), |
| Protocol(v) => Protocol(v), |
| Status(v) => Status(v), |
| }) |
| } |
| } |
| |
| <span class="kw">impl </span>Header { |
| <span class="kw">pub fn </span>new(name: Bytes, value: Bytes) -> <span class="prelude-ty">Result</span><Header, DecoderError> { |
| <span class="kw">if </span>name.is_empty() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(DecoderError::NeedMore(NeedMore::UnexpectedEndOfStream)); |
| } |
| <span class="kw">if </span>name[<span class="number">0</span>] == <span class="string">b':' </span>{ |
| <span class="kw">match </span><span class="kw-2">&</span>name[<span class="number">1</span>..] { |
| <span class="string">b"authority" </span>=> { |
| <span class="kw">let </span>value = BytesStr::try_from(value)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(Header::Authority(value)) |
| } |
| <span class="string">b"method" </span>=> { |
| <span class="kw">let </span>method = Method::from_bytes(<span class="kw-2">&</span>value)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(Header::Method(method)) |
| } |
| <span class="string">b"scheme" </span>=> { |
| <span class="kw">let </span>value = BytesStr::try_from(value)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(Header::Scheme(value)) |
| } |
| <span class="string">b"path" </span>=> { |
| <span class="kw">let </span>value = BytesStr::try_from(value)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(Header::Path(value)) |
| } |
| <span class="string">b"protocol" </span>=> { |
| <span class="kw">let </span>value = Protocol::try_from(value)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(Header::Protocol(value)) |
| } |
| <span class="string">b"status" </span>=> { |
| <span class="kw">let </span>status = StatusCode::from_bytes(<span class="kw-2">&</span>value)<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(Header::Status(status)) |
| } |
| <span class="kw">_ </span>=> <span class="prelude-val">Err</span>(DecoderError::InvalidPseudoheader), |
| } |
| } <span class="kw">else </span>{ |
| <span class="comment">// HTTP/2 requires lower case header names |
| </span><span class="kw">let </span>name = HeaderName::from_lowercase(<span class="kw-2">&</span>name)<span class="question-mark">?</span>; |
| <span class="kw">let </span>value = HeaderValue::from_bytes(<span class="kw-2">&</span>value)<span class="question-mark">?</span>; |
| |
| <span class="prelude-val">Ok</span>(Header::Field { name, value }) |
| } |
| } |
| |
| <span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Header::Field { |
| <span class="kw-2">ref </span>name, |
| <span class="kw-2">ref </span>value, |
| } => len(name, value), |
| Header::Authority(<span class="kw-2">ref </span>v) => <span class="number">32 </span>+ <span class="number">10 </span>+ v.len(), |
| Header::Method(<span class="kw-2">ref </span>v) => <span class="number">32 </span>+ <span class="number">7 </span>+ v.as_ref().len(), |
| Header::Scheme(<span class="kw-2">ref </span>v) => <span class="number">32 </span>+ <span class="number">7 </span>+ v.len(), |
| Header::Path(<span class="kw-2">ref </span>v) => <span class="number">32 </span>+ <span class="number">5 </span>+ v.len(), |
| Header::Protocol(<span class="kw-2">ref </span>v) => <span class="number">32 </span>+ <span class="number">9 </span>+ v.as_str().len(), |
| Header::Status(<span class="kw">_</span>) => <span class="number">32 </span>+ <span class="number">7 </span>+ <span class="number">3</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Returns the header name |
| </span><span class="kw">pub fn </span>name(<span class="kw-2">&</span><span class="self">self</span>) -> Name { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Header::Field { <span class="kw-2">ref </span>name, .. } => Name::Field(name), |
| Header::Authority(..) => Name::Authority, |
| Header::Method(..) => Name::Method, |
| Header::Scheme(..) => Name::Scheme, |
| Header::Path(..) => Name::Path, |
| Header::Protocol(..) => Name::Protocol, |
| Header::Status(..) => Name::Status, |
| } |
| } |
| |
| <span class="kw">pub fn </span>value_slice(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Header::Field { <span class="kw-2">ref </span>value, .. } => value.as_ref(), |
| Header::Authority(<span class="kw-2">ref </span>v) => v.as_ref(), |
| Header::Method(<span class="kw-2">ref </span>v) => v.as_ref().as_ref(), |
| Header::Scheme(<span class="kw-2">ref </span>v) => v.as_ref(), |
| Header::Path(<span class="kw-2">ref </span>v) => v.as_ref(), |
| Header::Protocol(<span class="kw-2">ref </span>v) => v.as_ref(), |
| Header::Status(<span class="kw-2">ref </span>v) => v.as_str().as_ref(), |
| } |
| } |
| |
| <span class="kw">pub fn </span>value_eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>Header) -> bool { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Header::Field { <span class="kw-2">ref </span>value, .. } => { |
| <span class="kw">let </span>a = value; |
| <span class="kw">match </span><span class="kw-2">*</span>other { |
| Header::Field { <span class="kw-2">ref </span>value, .. } => a == value, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| } |
| } |
| Header::Authority(<span class="kw-2">ref </span>a) => <span class="kw">match </span><span class="kw-2">*</span>other { |
| Header::Authority(<span class="kw-2">ref </span>b) => a == b, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| }, |
| Header::Method(<span class="kw-2">ref </span>a) => <span class="kw">match </span><span class="kw-2">*</span>other { |
| Header::Method(<span class="kw-2">ref </span>b) => a == b, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| }, |
| Header::Scheme(<span class="kw-2">ref </span>a) => <span class="kw">match </span><span class="kw-2">*</span>other { |
| Header::Scheme(<span class="kw-2">ref </span>b) => a == b, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| }, |
| Header::Path(<span class="kw-2">ref </span>a) => <span class="kw">match </span><span class="kw-2">*</span>other { |
| Header::Path(<span class="kw-2">ref </span>b) => a == b, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| }, |
| Header::Protocol(<span class="kw-2">ref </span>a) => <span class="kw">match </span><span class="kw-2">*</span>other { |
| Header::Protocol(<span class="kw-2">ref </span>b) => a == b, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| }, |
| Header::Status(<span class="kw-2">ref </span>a) => <span class="kw">match </span><span class="kw-2">*</span>other { |
| Header::Status(<span class="kw-2">ref </span>b) => a == b, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| }, |
| } |
| } |
| |
| <span class="kw">pub fn </span>is_sensitive(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Header::Field { <span class="kw-2">ref </span>value, .. } => value.is_sensitive(), |
| <span class="comment">// TODO: Technically these other header values can be sensitive too. |
| </span><span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="kw">pub fn </span>skip_value_index(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="kw">use </span>http::header; |
| |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Header::Field { <span class="kw-2">ref </span>name, .. } => <span class="macro">matches!</span>( |
| <span class="kw-2">*</span>name, |
| header::AGE |
| | header::AUTHORIZATION |
| | header::CONTENT_LENGTH |
| | header::ETAG |
| | header::IF_MODIFIED_SINCE |
| | header::IF_NONE_MATCH |
| | header::LOCATION |
| | header::COOKIE |
| | header::SET_COOKIE |
| ), |
| Header::Path(..) => <span class="bool-val">true</span>, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| } |
| } |
| } |
| |
| <span class="comment">// Mostly for tests |
| </span><span class="kw">impl </span>From<Header> <span class="kw">for </span>Header<<span class="prelude-ty">Option</span><HeaderName>> { |
| <span class="kw">fn </span>from(src: Header) -> <span class="self">Self </span>{ |
| <span class="kw">match </span>src { |
| Header::Field { name, value } => Header::Field { |
| name: <span class="prelude-val">Some</span>(name), |
| value, |
| }, |
| Header::Authority(v) => Header::Authority(v), |
| Header::Method(v) => Header::Method(v), |
| Header::Scheme(v) => Header::Scheme(v), |
| Header::Path(v) => Header::Path(v), |
| Header::Protocol(v) => Header::Protocol(v), |
| Header::Status(v) => Header::Status(v), |
| } |
| } |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> Name<<span class="lifetime">'a</span>> { |
| <span class="kw">pub fn </span>into_entry(<span class="self">self</span>, value: Bytes) -> <span class="prelude-ty">Result</span><Header, DecoderError> { |
| <span class="kw">match </span><span class="self">self </span>{ |
| Name::Field(name) => <span class="prelude-val">Ok</span>(Header::Field { |
| name: name.clone(), |
| value: HeaderValue::from_bytes(<span class="kw-2">&</span>value)<span class="question-mark">?</span>, |
| }), |
| Name::Authority => <span class="prelude-val">Ok</span>(Header::Authority(BytesStr::try_from(value)<span class="question-mark">?</span>)), |
| Name::Method => <span class="prelude-val">Ok</span>(Header::Method(Method::from_bytes(<span class="kw-2">&</span>value)<span class="question-mark">?</span>)), |
| Name::Scheme => <span class="prelude-val">Ok</span>(Header::Scheme(BytesStr::try_from(value)<span class="question-mark">?</span>)), |
| Name::Path => <span class="prelude-val">Ok</span>(Header::Path(BytesStr::try_from(value)<span class="question-mark">?</span>)), |
| Name::Protocol => <span class="prelude-val">Ok</span>(Header::Protocol(Protocol::try_from(value)<span class="question-mark">?</span>)), |
| Name::Status => { |
| <span class="kw">match </span>StatusCode::from_bytes(<span class="kw-2">&</span>value) { |
| <span class="prelude-val">Ok</span>(status) => <span class="prelude-val">Ok</span>(Header::Status(status)), |
| <span class="comment">// TODO: better error handling |
| </span><span class="prelude-val">Err</span>(<span class="kw">_</span>) => <span class="prelude-val">Err</span>(DecoderError::InvalidStatusCode), |
| } |
| } |
| } |
| } |
| |
| <span class="kw">pub fn </span>as_slice(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{ |
| Name::Field(<span class="kw-2">ref </span>name) => name.as_ref(), |
| Name::Authority => <span class="string">b":authority"</span>, |
| Name::Method => <span class="string">b":method"</span>, |
| Name::Scheme => <span class="string">b":scheme"</span>, |
| Name::Path => <span class="string">b":path"</span>, |
| Name::Protocol => <span class="string">b":protocol"</span>, |
| Name::Status => <span class="string">b":status"</span>, |
| } |
| } |
| } |
| |
| <span class="comment">// ===== impl BytesStr ===== |
| |
| </span><span class="kw">impl </span>BytesStr { |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">const fn </span>from_static(value: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> <span class="self">Self </span>{ |
| BytesStr(Bytes::from_static(value.as_bytes())) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>from(value: <span class="kw-2">&</span>str) -> <span class="self">Self </span>{ |
| BytesStr(Bytes::copy_from_slice(value.as_bytes())) |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub fn </span>try_from(bytes: Bytes) -> <span class="prelude-ty">Result</span><<span class="self">Self</span>, std::str::Utf8Error> { |
| std::str::from_utf8(bytes.as_ref())<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(BytesStr(bytes)) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="comment">// Safety: check valid utf-8 in constructor |
| </span><span class="kw">unsafe </span>{ std::str::from_utf8_unchecked(<span class="self">self</span>.<span class="number">0</span>.as_ref()) } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>into_inner(<span class="self">self</span>) -> Bytes { |
| <span class="self">self</span>.<span class="number">0 |
| </span>} |
| } |
| |
| <span class="kw">impl </span>std::ops::Deref <span class="kw">for </span>BytesStr { |
| <span class="kw">type </span>Target = str; |
| <span class="kw">fn </span>deref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>str { |
| <span class="self">self</span>.as_str() |
| } |
| } |
| |
| <span class="kw">impl </span>AsRef<[u8]> <span class="kw">for </span>BytesStr { |
| <span class="kw">fn </span>as_ref(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">&</span>[u8] { |
| <span class="self">self</span>.<span class="number">0</span>.as_ref() |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>BytesStr { |
| <span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result { |
| <span class="self">self</span>.<span class="number">0</span>.fmt(f) |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="h2" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
