| <!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/reqwest-0.11.18/src/async_impl/body.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>body.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="../../../reqwest/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="../../../reqwest/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 </span>std::fmt; |
| <span class="kw">use </span>std::future::Future; |
| <span class="kw">use </span>std::pin::Pin; |
| <span class="kw">use </span>std::task::{Context, Poll}; |
| |
| <span class="kw">use </span>bytes::Bytes; |
| <span class="kw">use </span>futures_core::Stream; |
| <span class="kw">use </span>http_body::Body <span class="kw">as </span>HttpBody; |
| <span class="kw">use </span>pin_project_lite::pin_project; |
| <span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| </span><span class="kw">use </span>tokio::fs::File; |
| <span class="kw">use </span>tokio::time::Sleep; |
| <span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| </span><span class="kw">use </span>tokio_util::io::ReaderStream; |
| |
| <span class="doccomment">/// An asynchronous request body. |
| </span><span class="kw">pub struct </span>Body { |
| inner: Inner, |
| } |
| |
| <span class="comment">// The `Stream` trait isn't stable, so the impl isn't public. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>ImplStream(Body); |
| |
| <span class="kw">enum </span>Inner { |
| Reusable(Bytes), |
| Streaming { |
| body: Pin< |
| Box< |
| <span class="kw">dyn </span>HttpBody<Data = Bytes, Error = Box<<span class="kw">dyn </span>std::error::Error + Send + Sync>> |
| + Send |
| + Sync, |
| >, |
| >, |
| timeout: <span class="prelude-ty">Option</span><Pin<Box<Sleep>>>, |
| }, |
| } |
| |
| <span class="macro">pin_project! </span>{ |
| <span class="kw">struct </span>WrapStream<S> { |
| <span class="attribute">#[pin] |
| </span>inner: S, |
| } |
| } |
| |
| <span class="kw">struct </span>WrapHyper(hyper::Body); |
| |
| <span class="kw">impl </span>Body { |
| <span class="doccomment">/// Returns a reference to the internal data of the `Body`. |
| /// |
| /// `None` is returned, if the underlying data is a stream. |
| </span><span class="kw">pub fn </span>as_bytes(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>[u8]> { |
| <span class="kw">match </span><span class="kw-2">&</span><span class="self">self</span>.inner { |
| Inner::Reusable(bytes) => <span class="prelude-val">Some</span>(bytes.as_ref()), |
| Inner::Streaming { .. } => <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="doccomment">/// Wrap a futures `Stream` in a box inside `Body`. |
| /// |
| /// # Example |
| /// |
| /// ``` |
| /// # use reqwest::Body; |
| /// # use futures_util; |
| /// # fn main() { |
| /// let chunks: Vec<Result<_, ::std::io::Error>> = vec![ |
| /// Ok("hello"), |
| /// Ok(" "), |
| /// Ok("world"), |
| /// ]; |
| /// |
| /// let stream = futures_util::stream::iter(chunks); |
| /// |
| /// let body = Body::wrap_stream(stream); |
| /// # } |
| /// ``` |
| /// |
| /// # Optional |
| /// |
| /// This requires the `stream` feature to be enabled. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"stream"</span>)))] |
| </span><span class="kw">pub fn </span>wrap_stream<S>(stream: S) -> Body |
| <span class="kw">where |
| </span>S: futures_core::stream::TryStream + Send + Sync + <span class="lifetime">'static</span>, |
| S::Error: Into<Box<<span class="kw">dyn </span>std::error::Error + Send + Sync>>, |
| Bytes: From<S::Ok>, |
| { |
| Body::stream(stream) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>stream<S>(stream: S) -> Body |
| <span class="kw">where |
| </span>S: futures_core::stream::TryStream + Send + Sync + <span class="lifetime">'static</span>, |
| S::Error: Into<Box<<span class="kw">dyn </span>std::error::Error + Send + Sync>>, |
| Bytes: From<S::Ok>, |
| { |
| <span class="kw">use </span>futures_util::TryStreamExt; |
| |
| <span class="kw">let </span>body = Box::pin(WrapStream { |
| inner: stream.map_ok(Bytes::from).map_err(Into::into), |
| }); |
| Body { |
| inner: Inner::Streaming { |
| body, |
| timeout: <span class="prelude-val">None</span>, |
| }, |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>response(body: hyper::Body, timeout: <span class="prelude-ty">Option</span><Pin<Box<Sleep>>>) -> Body { |
| Body { |
| inner: Inner::Streaming { |
| body: Box::pin(WrapHyper(body)), |
| timeout, |
| }, |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"blocking"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>wrap(body: hyper::Body) -> Body { |
| Body { |
| inner: Inner::Streaming { |
| body: Box::pin(WrapHyper(body)), |
| timeout: <span class="prelude-val">None</span>, |
| }, |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>empty() -> Body { |
| Body::reusable(Bytes::new()) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>reusable(chunk: Bytes) -> Body { |
| Body { |
| inner: Inner::Reusable(chunk), |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>try_reuse(<span class="self">self</span>) -> (<span class="prelude-ty">Option</span><Bytes>, <span class="self">Self</span>) { |
| <span class="kw">let </span>reuse = <span class="kw">match </span><span class="self">self</span>.inner { |
| Inner::Reusable(<span class="kw-2">ref </span>chunk) => <span class="prelude-val">Some</span>(chunk.clone()), |
| Inner::Streaming { .. } => <span class="prelude-val">None</span>, |
| }; |
| |
| (reuse, <span class="self">self</span>) |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>try_clone(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><Body> { |
| <span class="kw">match </span><span class="self">self</span>.inner { |
| Inner::Reusable(<span class="kw-2">ref </span>chunk) => <span class="prelude-val">Some</span>(Body::reusable(chunk.clone())), |
| Inner::Streaming { .. } => <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>into_stream(<span class="self">self</span>) -> ImplStream { |
| ImplStream(<span class="self">self</span>) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"multipart"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>content_length(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><u64> { |
| <span class="kw">match </span><span class="self">self</span>.inner { |
| Inner::Reusable(<span class="kw-2">ref </span>bytes) => <span class="prelude-val">Some</span>(bytes.len() <span class="kw">as </span>u64), |
| Inner::Streaming { <span class="kw-2">ref </span>body, .. } => body.size_hint().exact(), |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>From<hyper::Body> <span class="kw">for </span>Body { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(body: hyper::Body) -> Body { |
| <span class="self">Self </span>{ |
| inner: Inner::Streaming { |
| body: Box::pin(WrapHyper(body)), |
| timeout: <span class="prelude-val">None</span>, |
| }, |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>From<Bytes> <span class="kw">for </span>Body { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(bytes: Bytes) -> Body { |
| Body::reusable(bytes) |
| } |
| } |
| |
| <span class="kw">impl </span>From<Vec<u8>> <span class="kw">for </span>Body { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(vec: Vec<u8>) -> Body { |
| Body::reusable(vec.into()) |
| } |
| } |
| |
| <span class="kw">impl </span>From<<span class="kw-2">&</span><span class="lifetime">'static </span>[u8]> <span class="kw">for </span>Body { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(s: <span class="kw-2">&</span><span class="lifetime">'static </span>[u8]) -> Body { |
| Body::reusable(Bytes::from_static(s)) |
| } |
| } |
| |
| <span class="kw">impl </span>From<String> <span class="kw">for </span>Body { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(s: String) -> Body { |
| Body::reusable(s.into()) |
| } |
| } |
| |
| <span class="kw">impl </span>From<<span class="kw-2">&</span><span class="lifetime">'static </span>str> <span class="kw">for </span>Body { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(s: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> Body { |
| s.as_bytes().into() |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"stream"</span>)] |
| #[cfg_attr(docsrs, doc(cfg(feature = <span class="string">"stream"</span>)))] |
| </span><span class="kw">impl </span>From<File> <span class="kw">for </span>Body { |
| <span class="attribute">#[inline] |
| </span><span class="kw">fn </span>from(file: File) -> Body { |
| Body::wrap_stream(ReaderStream::new(file)) |
| } |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Body { |
| <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) -> fmt::Result { |
| f.debug_struct(<span class="string">"Body"</span>).finish() |
| } |
| } |
| |
| <span class="comment">// ===== impl ImplStream ===== |
| |
| </span><span class="kw">impl </span>HttpBody <span class="kw">for </span>ImplStream { |
| <span class="kw">type </span>Data = Bytes; |
| <span class="kw">type </span>Error = <span class="kw">crate</span>::Error; |
| |
| <span class="kw">fn </span>poll_data( |
| <span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>Context, |
| ) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><<span class="self">Self</span>::Data, <span class="self">Self</span>::Error>>> { |
| <span class="kw">let </span>opt_try_chunk = <span class="kw">match </span><span class="self">self</span>.<span class="number">0</span>.inner { |
| Inner::Streaming { |
| <span class="kw-2">ref mut </span>body, |
| <span class="kw-2">ref mut </span>timeout, |
| } => { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref mut </span>timeout) = timeout { |
| <span class="kw">if let </span>Poll::Ready(()) = timeout.as_mut().poll(cx) { |
| <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::error::body(<span class="kw">crate</span>::error::TimedOut)))); |
| } |
| } |
| <span class="macro">futures_core::ready!</span>(Pin::new(body).poll_data(cx)) |
| .map(|opt_chunk| opt_chunk.map(Into::into).map_err(<span class="kw">crate</span>::error::body)) |
| } |
| Inner::Reusable(<span class="kw-2">ref mut </span>bytes) => { |
| <span class="kw">if </span>bytes.is_empty() { |
| <span class="prelude-val">None |
| </span>} <span class="kw">else </span>{ |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(std::mem::replace(bytes, Bytes::new()))) |
| } |
| } |
| }; |
| |
| Poll::Ready(opt_try_chunk) |
| } |
| |
| <span class="kw">fn </span>poll_trailers( |
| <span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| _cx: <span class="kw-2">&mut </span>Context, |
| ) -> Poll<<span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><http::HeaderMap>, <span class="self">Self</span>::Error>> { |
| Poll::Ready(<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>)) |
| } |
| |
| <span class="kw">fn </span>is_end_stream(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="kw">match </span><span class="self">self</span>.<span class="number">0</span>.inner { |
| Inner::Streaming { <span class="kw-2">ref </span>body, .. } => body.is_end_stream(), |
| Inner::Reusable(<span class="kw-2">ref </span>bytes) => bytes.is_empty(), |
| } |
| } |
| |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> http_body::SizeHint { |
| <span class="kw">match </span><span class="self">self</span>.<span class="number">0</span>.inner { |
| Inner::Streaming { <span class="kw-2">ref </span>body, .. } => body.size_hint(), |
| Inner::Reusable(<span class="kw-2">ref </span>bytes) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>hint = http_body::SizeHint::default(); |
| hint.set_exact(bytes.len() <span class="kw">as </span>u64); |
| hint |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>Stream <span class="kw">for </span>ImplStream { |
| <span class="kw">type </span>Item = <span class="prelude-ty">Result</span><Bytes, <span class="kw">crate</span>::Error>; |
| |
| <span class="kw">fn </span>poll_next(<span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, cx: <span class="kw-2">&mut </span>Context) -> Poll<<span class="prelude-ty">Option</span><<span class="self">Self</span>::Item>> { |
| <span class="self">self</span>.poll_data(cx) |
| } |
| } |
| |
| <span class="comment">// ===== impl WrapStream ===== |
| |
| </span><span class="kw">impl</span><S, D, E> HttpBody <span class="kw">for </span>WrapStream<S> |
| <span class="kw">where |
| </span>S: Stream<Item = <span class="prelude-ty">Result</span><D, E>>, |
| D: Into<Bytes>, |
| E: Into<Box<<span class="kw">dyn </span>std::error::Error + Send + Sync>>, |
| { |
| <span class="kw">type </span>Data = Bytes; |
| <span class="kw">type </span>Error = E; |
| |
| <span class="kw">fn </span>poll_data( |
| <span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>Context, |
| ) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><<span class="self">Self</span>::Data, <span class="self">Self</span>::Error>>> { |
| <span class="kw">let </span>item = <span class="macro">futures_core::ready!</span>(<span class="self">self</span>.project().inner.poll_next(cx)<span class="question-mark">?</span>); |
| |
| Poll::Ready(item.map(|val| <span class="prelude-val">Ok</span>(val.into()))) |
| } |
| |
| <span class="kw">fn </span>poll_trailers( |
| <span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| _cx: <span class="kw-2">&mut </span>Context, |
| ) -> Poll<<span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><http::HeaderMap>, <span class="self">Self</span>::Error>> { |
| Poll::Ready(<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>)) |
| } |
| } |
| |
| <span class="comment">// ===== impl WrapHyper ===== |
| |
| </span><span class="kw">impl </span>HttpBody <span class="kw">for </span>WrapHyper { |
| <span class="kw">type </span>Data = Bytes; |
| <span class="kw">type </span>Error = Box<<span class="kw">dyn </span>std::error::Error + Send + Sync>; |
| |
| <span class="kw">fn </span>poll_data( |
| <span class="kw-2">mut </span><span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| cx: <span class="kw-2">&mut </span>Context, |
| ) -> Poll<<span class="prelude-ty">Option</span><<span class="prelude-ty">Result</span><<span class="self">Self</span>::Data, <span class="self">Self</span>::Error>>> { |
| <span class="comment">// safe pin projection |
| </span>Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>) |
| .poll_data(cx) |
| .map(|opt| opt.map(|res| res.map_err(Into::into))) |
| } |
| |
| <span class="kw">fn </span>poll_trailers( |
| <span class="self">self</span>: Pin<<span class="kw-2">&mut </span><span class="self">Self</span>>, |
| _cx: <span class="kw-2">&mut </span>Context, |
| ) -> Poll<<span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><http::HeaderMap>, <span class="self">Self</span>::Error>> { |
| Poll::Ready(<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>)) |
| } |
| |
| <span class="kw">fn </span>is_end_stream(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="self">self</span>.<span class="number">0</span>.is_end_stream() |
| } |
| |
| <span class="kw">fn </span>size_hint(<span class="kw-2">&</span><span class="self">self</span>) -> http_body::SizeHint { |
| HttpBody::size_hint(<span class="kw-2">&</span><span class="self">self</span>.<span class="number">0</span>) |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use </span><span class="kw">super</span>::Body; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>test_as_bytes() { |
| <span class="kw">let </span>test_data = <span class="string">b"Test body"</span>; |
| <span class="kw">let </span>body = Body::from(<span class="kw-2">&</span>test_data[..]); |
| <span class="macro">assert_eq!</span>(body.as_bytes(), <span class="prelude-val">Some</span>(<span class="kw-2">&</span>test_data[..])); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="reqwest" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |