| <!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/decoder.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>decoder.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> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| <span id="151">151</span> |
| <span id="152">152</span> |
| <span id="153">153</span> |
| <span id="154">154</span> |
| <span id="155">155</span> |
| <span id="156">156</span> |
| <span id="157">157</span> |
| <span id="158">158</span> |
| <span id="159">159</span> |
| <span id="160">160</span> |
| <span id="161">161</span> |
| <span id="162">162</span> |
| <span id="163">163</span> |
| <span id="164">164</span> |
| <span id="165">165</span> |
| <span id="166">166</span> |
| <span id="167">167</span> |
| <span id="168">168</span> |
| <span id="169">169</span> |
| <span id="170">170</span> |
| <span id="171">171</span> |
| <span id="172">172</span> |
| <span id="173">173</span> |
| <span id="174">174</span> |
| <span id="175">175</span> |
| <span id="176">176</span> |
| <span id="177">177</span> |
| <span id="178">178</span> |
| <span id="179">179</span> |
| <span id="180">180</span> |
| <span id="181">181</span> |
| <span id="182">182</span> |
| <span id="183">183</span> |
| <span id="184">184</span> |
| <span id="185">185</span> |
| <span id="186">186</span> |
| <span id="187">187</span> |
| <span id="188">188</span> |
| <span id="189">189</span> |
| <span id="190">190</span> |
| <span id="191">191</span> |
| <span id="192">192</span> |
| <span id="193">193</span> |
| <span id="194">194</span> |
| <span id="195">195</span> |
| <span id="196">196</span> |
| <span id="197">197</span> |
| <span id="198">198</span> |
| <span id="199">199</span> |
| <span id="200">200</span> |
| <span id="201">201</span> |
| <span id="202">202</span> |
| <span id="203">203</span> |
| <span id="204">204</span> |
| <span id="205">205</span> |
| <span id="206">206</span> |
| <span id="207">207</span> |
| <span id="208">208</span> |
| <span id="209">209</span> |
| <span id="210">210</span> |
| <span id="211">211</span> |
| <span id="212">212</span> |
| <span id="213">213</span> |
| <span id="214">214</span> |
| <span id="215">215</span> |
| <span id="216">216</span> |
| <span id="217">217</span> |
| <span id="218">218</span> |
| <span id="219">219</span> |
| <span id="220">220</span> |
| <span id="221">221</span> |
| <span id="222">222</span> |
| <span id="223">223</span> |
| <span id="224">224</span> |
| <span id="225">225</span> |
| <span id="226">226</span> |
| <span id="227">227</span> |
| <span id="228">228</span> |
| <span id="229">229</span> |
| <span id="230">230</span> |
| <span id="231">231</span> |
| <span id="232">232</span> |
| <span id="233">233</span> |
| <span id="234">234</span> |
| <span id="235">235</span> |
| <span id="236">236</span> |
| <span id="237">237</span> |
| <span id="238">238</span> |
| <span id="239">239</span> |
| <span id="240">240</span> |
| <span id="241">241</span> |
| <span id="242">242</span> |
| <span id="243">243</span> |
| <span id="244">244</span> |
| <span id="245">245</span> |
| <span id="246">246</span> |
| <span id="247">247</span> |
| <span id="248">248</span> |
| <span id="249">249</span> |
| <span id="250">250</span> |
| <span id="251">251</span> |
| <span id="252">252</span> |
| <span id="253">253</span> |
| <span id="254">254</span> |
| <span id="255">255</span> |
| <span id="256">256</span> |
| <span id="257">257</span> |
| <span id="258">258</span> |
| <span id="259">259</span> |
| <span id="260">260</span> |
| <span id="261">261</span> |
| <span id="262">262</span> |
| <span id="263">263</span> |
| <span id="264">264</span> |
| <span id="265">265</span> |
| <span id="266">266</span> |
| <span id="267">267</span> |
| <span id="268">268</span> |
| <span id="269">269</span> |
| <span id="270">270</span> |
| <span id="271">271</span> |
| <span id="272">272</span> |
| <span id="273">273</span> |
| <span id="274">274</span> |
| <span id="275">275</span> |
| <span id="276">276</span> |
| <span id="277">277</span> |
| <span id="278">278</span> |
| <span id="279">279</span> |
| <span id="280">280</span> |
| <span id="281">281</span> |
| <span id="282">282</span> |
| <span id="283">283</span> |
| <span id="284">284</span> |
| <span id="285">285</span> |
| <span id="286">286</span> |
| <span id="287">287</span> |
| <span id="288">288</span> |
| <span id="289">289</span> |
| <span id="290">290</span> |
| <span id="291">291</span> |
| <span id="292">292</span> |
| <span id="293">293</span> |
| <span id="294">294</span> |
| <span id="295">295</span> |
| <span id="296">296</span> |
| <span id="297">297</span> |
| <span id="298">298</span> |
| <span id="299">299</span> |
| <span id="300">300</span> |
| <span id="301">301</span> |
| <span id="302">302</span> |
| <span id="303">303</span> |
| <span id="304">304</span> |
| <span id="305">305</span> |
| <span id="306">306</span> |
| <span id="307">307</span> |
| <span id="308">308</span> |
| <span id="309">309</span> |
| <span id="310">310</span> |
| <span id="311">311</span> |
| <span id="312">312</span> |
| <span id="313">313</span> |
| <span id="314">314</span> |
| <span id="315">315</span> |
| <span id="316">316</span> |
| <span id="317">317</span> |
| <span id="318">318</span> |
| <span id="319">319</span> |
| <span id="320">320</span> |
| <span id="321">321</span> |
| <span id="322">322</span> |
| <span id="323">323</span> |
| <span id="324">324</span> |
| <span id="325">325</span> |
| <span id="326">326</span> |
| <span id="327">327</span> |
| <span id="328">328</span> |
| <span id="329">329</span> |
| <span id="330">330</span> |
| <span id="331">331</span> |
| <span id="332">332</span> |
| <span id="333">333</span> |
| <span id="334">334</span> |
| <span id="335">335</span> |
| <span id="336">336</span> |
| <span id="337">337</span> |
| <span id="338">338</span> |
| <span id="339">339</span> |
| <span id="340">340</span> |
| <span id="341">341</span> |
| <span id="342">342</span> |
| <span id="343">343</span> |
| <span id="344">344</span> |
| <span id="345">345</span> |
| <span id="346">346</span> |
| <span id="347">347</span> |
| <span id="348">348</span> |
| <span id="349">349</span> |
| <span id="350">350</span> |
| <span id="351">351</span> |
| <span id="352">352</span> |
| <span id="353">353</span> |
| <span id="354">354</span> |
| <span id="355">355</span> |
| <span id="356">356</span> |
| <span id="357">357</span> |
| <span id="358">358</span> |
| <span id="359">359</span> |
| <span id="360">360</span> |
| <span id="361">361</span> |
| <span id="362">362</span> |
| <span id="363">363</span> |
| <span id="364">364</span> |
| <span id="365">365</span> |
| <span id="366">366</span> |
| <span id="367">367</span> |
| <span id="368">368</span> |
| <span id="369">369</span> |
| <span id="370">370</span> |
| <span id="371">371</span> |
| <span id="372">372</span> |
| <span id="373">373</span> |
| <span id="374">374</span> |
| <span id="375">375</span> |
| <span id="376">376</span> |
| <span id="377">377</span> |
| <span id="378">378</span> |
| <span id="379">379</span> |
| <span id="380">380</span> |
| <span id="381">381</span> |
| <span id="382">382</span> |
| <span id="383">383</span> |
| <span id="384">384</span> |
| <span id="385">385</span> |
| <span id="386">386</span> |
| <span id="387">387</span> |
| <span id="388">388</span> |
| <span id="389">389</span> |
| <span id="390">390</span> |
| <span id="391">391</span> |
| <span id="392">392</span> |
| <span id="393">393</span> |
| <span id="394">394</span> |
| <span id="395">395</span> |
| <span id="396">396</span> |
| <span id="397">397</span> |
| <span id="398">398</span> |
| <span id="399">399</span> |
| <span id="400">400</span> |
| <span id="401">401</span> |
| <span id="402">402</span> |
| <span id="403">403</span> |
| <span id="404">404</span> |
| <span id="405">405</span> |
| <span id="406">406</span> |
| <span id="407">407</span> |
| <span id="408">408</span> |
| <span id="409">409</span> |
| <span id="410">410</span> |
| <span id="411">411</span> |
| <span id="412">412</span> |
| <span id="413">413</span> |
| <span id="414">414</span> |
| <span id="415">415</span> |
| <span id="416">416</span> |
| <span id="417">417</span> |
| <span id="418">418</span> |
| <span id="419">419</span> |
| <span id="420">420</span> |
| <span id="421">421</span> |
| </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="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span><span class="kw">use </span>async_compression::tokio::bufread::GzipDecoder; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span><span class="kw">use </span>async_compression::tokio::bufread::BrotliDecoder; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span><span class="kw">use </span>async_compression::tokio::bufread::ZlibDecoder; |
| |
| <span class="kw">use </span>bytes::Bytes; |
| <span class="kw">use </span>futures_core::Stream; |
| <span class="kw">use </span>futures_util::stream::Peekable; |
| <span class="kw">use </span>http::HeaderMap; |
| <span class="kw">use </span>hyper::body::HttpBody; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"gzip"</span>, feature = <span class="string">"brotli"</span>, feature = <span class="string">"deflate"</span>))] |
| </span><span class="kw">use </span>tokio_util::codec::{BytesCodec, FramedRead}; |
| <span class="attribute">#[cfg(any(feature = <span class="string">"gzip"</span>, feature = <span class="string">"brotli"</span>, feature = <span class="string">"deflate"</span>))] |
| </span><span class="kw">use </span>tokio_util::io::StreamReader; |
| |
| <span class="kw">use </span><span class="kw">super</span>::<span class="kw">super</span>::Body; |
| <span class="kw">use </span><span class="kw">crate</span>::error; |
| |
| <span class="attribute">#[derive(Clone, Copy, Debug)] |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">struct </span>Accepts { |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) gzip: bool, |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) brotli: bool, |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) deflate: bool, |
| } |
| |
| <span class="doccomment">/// A response decompressor over a non-blocking stream of chunks. |
| /// |
| /// The inner decoder may be constructed asynchronously. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Decoder { |
| inner: Inner, |
| } |
| |
| <span class="kw">type </span>PeekableIoStream = Peekable<IoStream>; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"gzip"</span>, feature = <span class="string">"brotli"</span>, feature = <span class="string">"deflate"</span>))] |
| </span><span class="kw">type </span>PeekableIoStreamReader = StreamReader<PeekableIoStream, Bytes>; |
| |
| <span class="kw">enum </span>Inner { |
| <span class="doccomment">/// A `PlainText` decoder just returns the response content as is. |
| </span>PlainText(<span class="kw">super</span>::body::ImplStream), |
| |
| <span class="doccomment">/// A `Gzip` decoder will uncompress the gzipped response content before returning it. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>Gzip(Pin<Box<FramedRead<GzipDecoder<PeekableIoStreamReader>, BytesCodec>>>), |
| |
| <span class="doccomment">/// A `Brotli` decoder will uncompress the brotlied response content before returning it. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>Brotli(Pin<Box<FramedRead<BrotliDecoder<PeekableIoStreamReader>, BytesCodec>>>), |
| |
| <span class="doccomment">/// A `Deflate` decoder will uncompress the deflated response content before returning it. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>Deflate(Pin<Box<FramedRead<ZlibDecoder<PeekableIoStreamReader>, BytesCodec>>>), |
| |
| <span class="doccomment">/// A decoder that doesn't have a value yet. |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"brotli"</span>, feature = <span class="string">"gzip"</span>, feature = <span class="string">"deflate"</span>))] |
| </span>Pending(Pin<Box<Pending>>), |
| } |
| |
| <span class="doccomment">/// A future attempt to poll the response body for EOF so we know whether to use gzip or not. |
| </span><span class="kw">struct </span>Pending(PeekableIoStream, DecoderType); |
| |
| <span class="kw">struct </span>IoStream(<span class="kw">super</span>::body::ImplStream); |
| |
| <span class="kw">enum </span>DecoderType { |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>Gzip, |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>Brotli, |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>Deflate, |
| } |
| |
| <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Decoder { |
| <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">"Decoder"</span>).finish() |
| } |
| } |
| |
| <span class="kw">impl </span>Decoder { |
| <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>empty() -> Decoder { |
| Decoder { |
| inner: Inner::PlainText(Body::empty().into_stream()), |
| } |
| } |
| |
| <span class="doccomment">/// A plain text decoder. |
| /// |
| /// This decoder will emit the underlying chunks as-is. |
| </span><span class="kw">fn </span>plain_text(body: Body) -> Decoder { |
| Decoder { |
| inner: Inner::PlainText(body.into_stream()), |
| } |
| } |
| |
| <span class="doccomment">/// A gzip decoder. |
| /// |
| /// This decoder will buffer and decompress chunks that are gzipped. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span><span class="kw">fn </span>gzip(body: Body) -> Decoder { |
| <span class="kw">use </span>futures_util::StreamExt; |
| |
| Decoder { |
| inner: Inner::Pending(Box::pin(Pending( |
| IoStream(body.into_stream()).peekable(), |
| DecoderType::Gzip, |
| ))), |
| } |
| } |
| |
| <span class="doccomment">/// A brotli decoder. |
| /// |
| /// This decoder will buffer and decompress chunks that are brotlied. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span><span class="kw">fn </span>brotli(body: Body) -> Decoder { |
| <span class="kw">use </span>futures_util::StreamExt; |
| |
| Decoder { |
| inner: Inner::Pending(Box::pin(Pending( |
| IoStream(body.into_stream()).peekable(), |
| DecoderType::Brotli, |
| ))), |
| } |
| } |
| |
| <span class="doccomment">/// A deflate decoder. |
| /// |
| /// This decoder will buffer and decompress chunks that are deflated. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span><span class="kw">fn </span>deflate(body: Body) -> Decoder { |
| <span class="kw">use </span>futures_util::StreamExt; |
| |
| Decoder { |
| inner: Inner::Pending(Box::pin(Pending( |
| IoStream(body.into_stream()).peekable(), |
| DecoderType::Deflate, |
| ))), |
| } |
| } |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"brotli"</span>, feature = <span class="string">"gzip"</span>, feature = <span class="string">"deflate"</span>))] |
| </span><span class="kw">fn </span>detect_encoding(headers: <span class="kw-2">&mut </span>HeaderMap, encoding_str: <span class="kw-2">&</span>str) -> bool { |
| <span class="kw">use </span>http::header::{CONTENT_ENCODING, CONTENT_LENGTH, TRANSFER_ENCODING}; |
| <span class="kw">use </span>log::warn; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>is_content_encoded = { |
| headers |
| .get_all(CONTENT_ENCODING) |
| .iter() |
| .any(|enc| enc == encoding_str) |
| || headers |
| .get_all(TRANSFER_ENCODING) |
| .iter() |
| .any(|enc| enc == encoding_str) |
| }; |
| <span class="kw">if </span>is_content_encoded { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(content_length) = headers.get(CONTENT_LENGTH) { |
| <span class="kw">if </span>content_length == <span class="string">"0" </span>{ |
| <span class="macro">warn!</span>(<span class="string">"{} response with content-length of 0"</span>, encoding_str); |
| is_content_encoded = <span class="bool-val">false</span>; |
| } |
| } |
| } |
| <span class="kw">if </span>is_content_encoded { |
| headers.remove(CONTENT_ENCODING); |
| headers.remove(CONTENT_LENGTH); |
| } |
| is_content_encoded |
| } |
| |
| <span class="doccomment">/// Constructs a Decoder from a hyper request. |
| /// |
| /// A decoder is just a wrapper around the hyper request that knows |
| /// how to decode the content body of the request. |
| /// |
| /// Uses the correct variant by inspecting the Content-Encoding header. |
| </span><span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>detect(_headers: <span class="kw-2">&mut </span>HeaderMap, body: Body, _accepts: Accepts) -> Decoder { |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>{ |
| <span class="kw">if </span>_accepts.gzip && Decoder::detect_encoding(_headers, <span class="string">"gzip"</span>) { |
| <span class="kw">return </span>Decoder::gzip(body); |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>{ |
| <span class="kw">if </span>_accepts.brotli && Decoder::detect_encoding(_headers, <span class="string">"br"</span>) { |
| <span class="kw">return </span>Decoder::brotli(body); |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>{ |
| <span class="kw">if </span>_accepts.deflate && Decoder::detect_encoding(_headers, <span class="string">"deflate"</span>) { |
| <span class="kw">return </span>Decoder::deflate(body); |
| } |
| } |
| |
| Decoder::plain_text(body) |
| } |
| } |
| |
| <span class="kw">impl </span>Stream <span class="kw">for </span>Decoder { |
| <span class="kw">type </span>Item = <span class="prelude-ty">Result</span><Bytes, error::Error>; |
| |
| <span class="kw">fn </span>poll_next(<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="self">Self</span>::Item>> { |
| <span class="comment">// Do a read or poll for a pending decoder value. |
| </span><span class="kw">match </span><span class="self">self</span>.inner { |
| <span class="attribute">#[cfg(any(feature = <span class="string">"brotli"</span>, feature = <span class="string">"gzip"</span>, feature = <span class="string">"deflate"</span>))] |
| </span>Inner::Pending(<span class="kw-2">ref mut </span>future) => <span class="kw">match </span>Pin::new(future).poll(cx) { |
| Poll::Ready(<span class="prelude-val">Ok</span>(inner)) => { |
| <span class="self">self</span>.inner = inner; |
| <span class="self">self</span>.poll_next(cx) |
| } |
| Poll::Ready(<span class="prelude-val">Err</span>(e)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::error::decode_io(e)))), |
| Poll::Pending => Poll::Pending, |
| }, |
| Inner::PlainText(<span class="kw-2">ref mut </span>body) => Pin::new(body).poll_next(cx), |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>Inner::Gzip(<span class="kw-2">ref mut </span>decoder) => { |
| <span class="kw">match </span><span class="macro">futures_core::ready!</span>(Pin::new(decoder).poll_next(cx)) { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(bytes)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(bytes.freeze()))), |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::error::decode_io(err)))), |
| <span class="prelude-val">None </span>=> Poll::Ready(<span class="prelude-val">None</span>), |
| } |
| } |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>Inner::Brotli(<span class="kw-2">ref mut </span>decoder) => { |
| <span class="kw">match </span><span class="macro">futures_core::ready!</span>(Pin::new(decoder).poll_next(cx)) { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(bytes)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(bytes.freeze()))), |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::error::decode_io(err)))), |
| <span class="prelude-val">None </span>=> Poll::Ready(<span class="prelude-val">None</span>), |
| } |
| } |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>Inner::Deflate(<span class="kw-2">ref mut </span>decoder) => { |
| <span class="kw">match </span><span class="macro">futures_core::ready!</span>(Pin::new(decoder).poll_next(cx)) { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(bytes)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(bytes.freeze()))), |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(<span class="kw">crate</span>::error::decode_io(err)))), |
| <span class="prelude-val">None </span>=> Poll::Ready(<span class="prelude-val">None</span>), |
| } |
| } |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>HttpBody <span class="kw">for </span>Decoder { |
| <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="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="self">self</span>.poll_next(cx) |
| } |
| |
| <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>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>.inner { |
| Inner::PlainText(<span class="kw-2">ref </span>body) => HttpBody::size_hint(body), |
| <span class="comment">// the rest are "unknown", so default |
| </span><span class="attribute">#[cfg(any(feature = <span class="string">"brotli"</span>, feature = <span class="string">"gzip"</span>, feature = <span class="string">"deflate"</span>))] |
| </span><span class="kw">_ </span>=> http_body::SizeHint::default(), |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>Future <span class="kw">for </span>Pending { |
| <span class="kw">type </span>Output = <span class="prelude-ty">Result</span><Inner, std::io::Error>; |
| |
| <span class="kw">fn </span>poll(<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<<span class="lifetime">'_</span>>) -> Poll<<span class="self">Self</span>::Output> { |
| <span class="kw">use </span>futures_util::StreamExt; |
| |
| <span class="kw">match </span><span class="macro">futures_core::ready!</span>(Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>).poll_peek(cx)) { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(<span class="kw">_</span>)) => { |
| <span class="comment">// fallthrough |
| </span>} |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(_e)) => { |
| <span class="comment">// error was just a ref, so we need to really poll to move it |
| </span><span class="kw">return </span>Poll::Ready(<span class="prelude-val">Err</span>(<span class="macro">futures_core::ready!</span>( |
| Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>).poll_next(cx) |
| ) |
| .expect(<span class="string">"just peeked Some"</span>) |
| .unwrap_err())); |
| } |
| <span class="prelude-val">None </span>=> <span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(Inner::PlainText(Body::empty().into_stream()))), |
| }; |
| |
| <span class="kw">let </span>_body = std::mem::replace( |
| <span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>, |
| IoStream(Body::empty().into_stream()).peekable(), |
| ); |
| |
| <span class="kw">match </span><span class="self">self</span>.<span class="number">1 </span>{ |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>DecoderType::Brotli => Poll::Ready(<span class="prelude-val">Ok</span>(Inner::Brotli(Box::pin(FramedRead::new( |
| BrotliDecoder::new(StreamReader::new(_body)), |
| BytesCodec::new(), |
| ))))), |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>DecoderType::Gzip => Poll::Ready(<span class="prelude-val">Ok</span>(Inner::Gzip(Box::pin(FramedRead::new( |
| GzipDecoder::new(StreamReader::new(_body)), |
| BytesCodec::new(), |
| ))))), |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>DecoderType::Deflate => Poll::Ready(<span class="prelude-val">Ok</span>(Inner::Deflate(Box::pin(FramedRead::new( |
| ZlibDecoder::new(StreamReader::new(_body)), |
| BytesCodec::new(), |
| ))))), |
| } |
| } |
| } |
| |
| <span class="kw">impl </span>Stream <span class="kw">for </span>IoStream { |
| <span class="kw">type </span>Item = <span class="prelude-ty">Result</span><Bytes, std::io::Error>; |
| |
| <span class="kw">fn </span>poll_next(<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="self">Self</span>::Item>> { |
| <span class="kw">match </span><span class="macro">futures_core::ready!</span>(Pin::new(<span class="kw-2">&mut </span><span class="self">self</span>.<span class="number">0</span>).poll_next(cx)) { |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(chunk)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(chunk))), |
| <span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err)) => Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err.into_io()))), |
| <span class="prelude-val">None </span>=> Poll::Ready(<span class="prelude-val">None</span>), |
| } |
| } |
| } |
| |
| <span class="comment">// ===== impl Accepts ===== |
| |
| </span><span class="kw">impl </span>Accepts { |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>none() -> <span class="self">Self </span>{ |
| Accepts { |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>gzip: <span class="bool-val">false</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>brotli: <span class="bool-val">false</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>deflate: <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn </span>as_str(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'static </span>str> { |
| <span class="kw">match </span>(<span class="self">self</span>.is_gzip(), <span class="self">self</span>.is_brotli(), <span class="self">self</span>.is_deflate()) { |
| (<span class="bool-val">true</span>, <span class="bool-val">true</span>, <span class="bool-val">true</span>) => <span class="prelude-val">Some</span>(<span class="string">"gzip, br, deflate"</span>), |
| (<span class="bool-val">true</span>, <span class="bool-val">true</span>, <span class="bool-val">false</span>) => <span class="prelude-val">Some</span>(<span class="string">"gzip, br"</span>), |
| (<span class="bool-val">true</span>, <span class="bool-val">false</span>, <span class="bool-val">true</span>) => <span class="prelude-val">Some</span>(<span class="string">"gzip, deflate"</span>), |
| (<span class="bool-val">false</span>, <span class="bool-val">true</span>, <span class="bool-val">true</span>) => <span class="prelude-val">Some</span>(<span class="string">"br, deflate"</span>), |
| (<span class="bool-val">true</span>, <span class="bool-val">false</span>, <span class="bool-val">false</span>) => <span class="prelude-val">Some</span>(<span class="string">"gzip"</span>), |
| (<span class="bool-val">false</span>, <span class="bool-val">true</span>, <span class="bool-val">false</span>) => <span class="prelude-val">Some</span>(<span class="string">"br"</span>), |
| (<span class="bool-val">false</span>, <span class="bool-val">false</span>, <span class="bool-val">true</span>) => <span class="prelude-val">Some</span>(<span class="string">"deflate"</span>), |
| (<span class="bool-val">false</span>, <span class="bool-val">false</span>, <span class="bool-val">false</span>) => <span class="prelude-val">None</span>, |
| } |
| } |
| |
| <span class="kw">fn </span>is_gzip(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>{ |
| <span class="self">self</span>.gzip |
| } |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"gzip"</span>))] |
| </span>{ |
| <span class="bool-val">false |
| </span>} |
| } |
| |
| <span class="kw">fn </span>is_brotli(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>{ |
| <span class="self">self</span>.brotli |
| } |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"brotli"</span>))] |
| </span>{ |
| <span class="bool-val">false |
| </span>} |
| } |
| |
| <span class="kw">fn </span>is_deflate(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>{ |
| <span class="self">self</span>.deflate |
| } |
| |
| <span class="attribute">#[cfg(not(feature = <span class="string">"deflate"</span>))] |
| </span>{ |
| <span class="bool-val">false |
| </span>} |
| } |
| } |
| |
| <span class="kw">impl </span>Default <span class="kw">for </span>Accepts { |
| <span class="kw">fn </span>default() -> Accepts { |
| Accepts { |
| <span class="attribute">#[cfg(feature = <span class="string">"gzip"</span>)] |
| </span>gzip: <span class="bool-val">true</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"brotli"</span>)] |
| </span>brotli: <span class="bool-val">true</span>, |
| <span class="attribute">#[cfg(feature = <span class="string">"deflate"</span>)] |
| </span>deflate: <span class="bool-val">true</span>, |
| } |
| } |
| } |
| </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> |
