api-docs/crates-app/src/reqwest/redirect.rs.html - incubator-teaclave-website - Git at Google

 <!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/redirect.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>redirect.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>
 </pre><pre class="rust"><code><span class="doccomment">//! Redirect Handling
 //!
 //! By default, a `Client` will automatically handle HTTP redirects, having a
 //! maximum redirect chain of 10 hops. To customize this behavior, a
 //! `redirect::Policy` can be used with a `ClientBuilder`.

 </span><span class="kw">use </span>std::error::Error <span class="kw">as </span>StdError;
 <span class="kw">use </span>std::fmt;

 <span class="kw">use </span><span class="kw">crate</span>::header::{HeaderMap, AUTHORIZATION, COOKIE, PROXY_AUTHORIZATION, WWW_AUTHENTICATE};
 <span class="kw">use </span>hyper::StatusCode;

 <span class="kw">use </span><span class="kw">crate</span>::Url;

 <span class="doccomment">/// A type that controls the policy on how to handle the following of redirects.
 ///
 /// The default value will catch redirect loops, and has a maximum of 10
 /// redirects it will follow in a chain before returning an error.
 ///
 /// - `limited` can be used have the same as the default behavior, but adjust
 ///   the allowed maximum redirect hops in a chain.
 /// - `none` can be used to disable all redirect behavior.
 /// - `custom` can be used to create a customized policy.
 </span><span class="kw">pub struct </span>Policy {
     inner: PolicyKind,
 }

 <span class="doccomment">/// A type that holds information on the next request and previous requests
 /// in redirect chain.
 </span><span class="attribute">#[derive(Debug)]
 </span><span class="kw">pub struct </span>Attempt&lt;<span class="lifetime">&#39;a</span>&gt; {
     status: StatusCode,
     next: <span class="kw-2">&amp;</span><span class="lifetime">&#39;a </span>Url,
     previous: <span class="kw-2">&amp;</span><span class="lifetime">&#39;a </span>[Url],
 }

 <span class="doccomment">/// An action to perform when a redirect status code is found.
 </span><span class="attribute">#[derive(Debug)]
 </span><span class="kw">pub struct </span>Action {
     inner: ActionKind,
 }

 <span class="kw">impl </span>Policy {
     <span class="doccomment">/// Create a `Policy` with a maximum number of redirects.
     ///
     /// An `Error` will be returned if the max is reached.
     </span><span class="kw">pub fn </span>limited(max: usize) -&gt; <span class="self">Self </span>{
         <span class="self">Self </span>{
             inner: PolicyKind::Limit(max),
         }
     }

     <span class="doccomment">/// Create a `Policy` that does not follow any redirect.
     </span><span class="kw">pub fn </span>none() -&gt; <span class="self">Self </span>{
         <span class="self">Self </span>{
             inner: PolicyKind::None,
         }
     }

     <span class="doccomment">/// Create a custom `Policy` using the passed function.
     ///
     /// # Note
     ///
     /// The default `Policy` handles a maximum loop
     /// chain, but the custom variant does not do that for you automatically.
     /// The custom policy should have some way of handling those.
     ///
     /// Information on the next request and previous requests can be found
     /// on the [`Attempt`] argument passed to the closure.
     ///
     /// Actions can be conveniently created from methods on the
     /// [`Attempt`].
     ///
     /// # Example
     ///
     /// ```rust
     /// # use reqwest::{Error, redirect};
     /// #
     /// # fn run() -&gt; Result&lt;(), Error&gt; {
     /// let custom = redirect::Policy::custom(|attempt| {
     ///     if attempt.previous().len() &gt; 5 {
     ///         attempt.error(&quot;too many redirects&quot;)
     ///     } else if attempt.url().host_str() == Some(&quot;example.domain&quot;) {
     ///         // prevent redirects to &#39;example.domain&#39;
     ///         attempt.stop()
     ///     } else {
     ///         attempt.follow()
     ///     }
     /// });
     /// let client = reqwest::Client::builder()
     ///     .redirect(custom)
     ///     .build()?;
     /// # Ok(())
     /// # }
     /// ```
     ///
     /// [`Attempt`]: struct.Attempt.html
     </span><span class="kw">pub fn </span>custom&lt;T&gt;(policy: T) -&gt; <span class="self">Self
     </span><span class="kw">where
         </span>T: Fn(Attempt) -&gt; Action + Send + Sync + <span class="lifetime">&#39;static</span>,
     {
         <span class="self">Self </span>{
             inner: PolicyKind::Custom(Box::new(policy)),
         }
     }

     <span class="doccomment">/// Apply this policy to a given [`Attempt`] to produce a [`Action`].
     ///
     /// # Note
     ///
     /// This method can be used together with `Policy::custom()`
     /// to construct one `Policy` that wraps another.
     ///
     /// # Example
     ///
     /// ```rust
     /// # use reqwest::{Error, redirect};
     /// #
     /// # fn run() -&gt; Result&lt;(), Error&gt; {
     /// let custom = redirect::Policy::custom(|attempt| {
     ///     eprintln!(&quot;{}, Location: {:?}&quot;, attempt.status(), attempt.url());
     ///     redirect::Policy::default().redirect(attempt)
     /// });
     /// # Ok(())
     /// # }
     /// ```
     </span><span class="kw">pub fn </span>redirect(<span class="kw-2">&amp;</span><span class="self">self</span>, attempt: Attempt) -&gt; Action {
         <span class="kw">match </span><span class="self">self</span>.inner {
             PolicyKind::Custom(<span class="kw-2">ref </span>custom) =&gt; custom(attempt),
             PolicyKind::Limit(max) =&gt; {
                 <span class="kw">if </span>attempt.previous.len() &gt;= max {
                     attempt.error(TooManyRedirects)
                 } <span class="kw">else </span>{
                     attempt.follow()
                 }
             }
             PolicyKind::None =&gt; attempt.stop(),
         }
     }

     <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>check(<span class="kw-2">&amp;</span><span class="self">self</span>, status: StatusCode, next: <span class="kw-2">&amp;</span>Url, previous: <span class="kw-2">&amp;</span>[Url]) -&gt; ActionKind {
         <span class="self">self</span>.redirect(Attempt {
             status,
             next,
             previous,
         })
         .inner
     }

     <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>is_default(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
         <span class="macro">matches!</span>(<span class="self">self</span>.inner, PolicyKind::Limit(<span class="number">10</span>))
     }
 }

 <span class="kw">impl </span>Default <span class="kw">for </span>Policy {
     <span class="kw">fn </span>default() -&gt; Policy {
         <span class="comment">// Keep `is_default` in sync
         </span>Policy::limited(<span class="number">10</span>)
     }
 }

 <span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>&gt; Attempt&lt;<span class="lifetime">&#39;a</span>&gt; {
     <span class="doccomment">/// Get the type of redirect.
     </span><span class="kw">pub fn </span>status(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; StatusCode {
         <span class="self">self</span>.status
     }

     <span class="doccomment">/// Get the next URL to redirect to.
     </span><span class="kw">pub fn </span>url(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>Url {
         <span class="self">self</span>.next
     }

     <span class="doccomment">/// Get the list of previous URLs that have already been requested in this chain.
     </span><span class="kw">pub fn </span>previous(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">&amp;</span>[Url] {
         <span class="self">self</span>.previous
     }
     <span class="doccomment">/// Returns an action meaning reqwest should follow the next URL.
     </span><span class="kw">pub fn </span>follow(<span class="self">self</span>) -&gt; Action {
         Action {
             inner: ActionKind::Follow,
         }
     }

     <span class="doccomment">/// Returns an action meaning reqwest should not follow the next URL.
     ///
     /// The 30x response will be returned as the `Ok` result.
     </span><span class="kw">pub fn </span>stop(<span class="self">self</span>) -&gt; Action {
         Action {
             inner: ActionKind::Stop,
         }
     }

     <span class="doccomment">/// Returns an action failing the redirect with an error.
     ///
     /// The `Error` will be returned for the result of the sent request.
     </span><span class="kw">pub fn </span>error&lt;E: Into&lt;Box&lt;<span class="kw">dyn </span>StdError + Send + Sync&gt;&gt;&gt;(<span class="self">self</span>, error: E) -&gt; Action {
         Action {
             inner: ActionKind::Error(error.into()),
         }
     }
 }

 <span class="kw">enum </span>PolicyKind {
     Custom(Box&lt;<span class="kw">dyn </span>Fn(Attempt) -&gt; Action + Send + Sync + <span class="lifetime">&#39;static</span>&gt;),
     Limit(usize),
     <span class="prelude-val">None</span>,
 }

 <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>Policy {
     <span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>fmt::Formatter) -&gt; fmt::Result {
         f.debug_tuple(<span class="string">&quot;Policy&quot;</span>).field(<span class="kw-2">&amp;</span><span class="self">self</span>.inner).finish()
     }
 }

 <span class="kw">impl </span>fmt::Debug <span class="kw">for </span>PolicyKind {
     <span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>fmt::Formatter) -&gt; fmt::Result {
         <span class="kw">match </span><span class="kw-2">*</span><span class="self">self </span>{
             PolicyKind::Custom(..) =&gt; f.pad(<span class="string">&quot;Custom&quot;</span>),
             PolicyKind::Limit(max) =&gt; f.debug_tuple(<span class="string">&quot;Limit&quot;</span>).field(<span class="kw-2">&amp;</span>max).finish(),
             PolicyKind::None =&gt; f.pad(<span class="string">&quot;None&quot;</span>),
         }
     }
 }

 <span class="comment">// pub(crate)

 </span><span class="attribute">#[derive(Debug)]
 </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">enum </span>ActionKind {
     Follow,
     Stop,
     Error(Box&lt;<span class="kw">dyn </span>StdError + Send + Sync&gt;),
 }

 <span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>remove_sensitive_headers(headers: <span class="kw-2">&amp;mut </span>HeaderMap, next: <span class="kw-2">&amp;</span>Url, previous: <span class="kw-2">&amp;</span>[Url]) {
     <span class="kw">if let </span><span class="prelude-val">Some</span>(previous) = previous.last() {
         <span class="kw">let </span>cross_host = next.host_str() != previous.host_str()
             || next.port_or_known_default() != previous.port_or_known_default();
         <span class="kw">if </span>cross_host {
             headers.remove(AUTHORIZATION);
             headers.remove(COOKIE);
             headers.remove(<span class="string">&quot;cookie2&quot;</span>);
             headers.remove(PROXY_AUTHORIZATION);
             headers.remove(WWW_AUTHENTICATE);
         }
     }
 }

 <span class="attribute">#[derive(Debug)]
 </span><span class="kw">struct </span>TooManyRedirects;

 <span class="kw">impl </span>fmt::Display <span class="kw">for </span>TooManyRedirects {
     <span class="kw">fn </span>fmt(<span class="kw-2">&amp;</span><span class="self">self</span>, f: <span class="kw-2">&amp;mut </span>fmt::Formatter&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; fmt::Result {
         f.write_str(<span class="string">&quot;too many redirects&quot;</span>)
     }
 }

 <span class="kw">impl </span>StdError <span class="kw">for </span>TooManyRedirects {}

 <span class="attribute">#[test]
 </span><span class="kw">fn </span>test_redirect_policy_limit() {
     <span class="kw">let </span>policy = Policy::default();
     <span class="kw">let </span>next = Url::parse(<span class="string">&quot;http://x.y/z&quot;</span>).unwrap();
     <span class="kw">let </span><span class="kw-2">mut </span>previous = (<span class="number">0</span>..<span class="number">9</span>)
         .map(|i| Url::parse(<span class="kw-2">&amp;</span><span class="macro">format!</span>(<span class="string">&quot;http://a.b/c/{}&quot;</span>, i)).unwrap())
         .collect::&lt;Vec&lt;<span class="kw">_</span>&gt;&gt;();

     <span class="kw">match </span>policy.check(StatusCode::FOUND, <span class="kw-2">&amp;</span>next, <span class="kw-2">&amp;</span>previous) {
         ActionKind::Follow =&gt; (),
         other =&gt; <span class="macro">panic!</span>(<span class="string">&quot;unexpected {:?}&quot;</span>, other),
     }

     previous.push(Url::parse(<span class="string">&quot;http://a.b.d/e/33&quot;</span>).unwrap());

     <span class="kw">match </span>policy.check(StatusCode::FOUND, <span class="kw-2">&amp;</span>next, <span class="kw-2">&amp;</span>previous) {
         ActionKind::Error(err) <span class="kw">if </span>err.is::&lt;TooManyRedirects&gt;() =&gt; (),
         other =&gt; <span class="macro">panic!</span>(<span class="string">&quot;unexpected {:?}&quot;</span>, other),
     }
 }

 <span class="attribute">#[test]
 </span><span class="kw">fn </span>test_redirect_policy_limit_to_0() {
     <span class="kw">let </span>policy = Policy::limited(<span class="number">0</span>);
     <span class="kw">let </span>next = Url::parse(<span class="string">&quot;http://x.y/z&quot;</span>).unwrap();
     <span class="kw">let </span>previous = <span class="macro">vec!</span>[Url::parse(<span class="string">&quot;http://a.b/c&quot;</span>).unwrap()];

     <span class="kw">match </span>policy.check(StatusCode::FOUND, <span class="kw-2">&amp;</span>next, <span class="kw-2">&amp;</span>previous) {
         ActionKind::Error(err) <span class="kw">if </span>err.is::&lt;TooManyRedirects&gt;() =&gt; (),
         other =&gt; <span class="macro">panic!</span>(<span class="string">&quot;unexpected {:?}&quot;</span>, other),
     }
 }

 <span class="attribute">#[test]
 </span><span class="kw">fn </span>test_redirect_policy_custom() {
     <span class="kw">let </span>policy = Policy::custom(|attempt| {
         <span class="kw">if </span>attempt.url().host_str() == <span class="prelude-val">Some</span>(<span class="string">&quot;foo&quot;</span>) {
             attempt.stop()
         } <span class="kw">else </span>{
             attempt.follow()
         }
     });

     <span class="kw">let </span>next = Url::parse(<span class="string">&quot;http://bar/baz&quot;</span>).unwrap();
     <span class="kw">match </span>policy.check(StatusCode::FOUND, <span class="kw-2">&amp;</span>next, <span class="kw-2">&amp;</span>[]) {
         ActionKind::Follow =&gt; (),
         other =&gt; <span class="macro">panic!</span>(<span class="string">&quot;unexpected {:?}&quot;</span>, other),
     }

     <span class="kw">let </span>next = Url::parse(<span class="string">&quot;http://foo/baz&quot;</span>).unwrap();
     <span class="kw">match </span>policy.check(StatusCode::FOUND, <span class="kw-2">&amp;</span>next, <span class="kw-2">&amp;</span>[]) {
         ActionKind::Stop =&gt; (),
         other =&gt; <span class="macro">panic!</span>(<span class="string">&quot;unexpected {:?}&quot;</span>, other),
     }
 }

 <span class="attribute">#[test]
 </span><span class="kw">fn </span>test_remove_sensitive_headers() {
     <span class="kw">use </span>hyper::header::{HeaderValue, ACCEPT, AUTHORIZATION, COOKIE};

     <span class="kw">let </span><span class="kw-2">mut </span>headers = HeaderMap::new();
     headers.insert(ACCEPT, HeaderValue::from_static(<span class="string">&quot;*/*&quot;</span>));
     headers.insert(AUTHORIZATION, HeaderValue::from_static(<span class="string">&quot;let me in&quot;</span>));
     headers.insert(COOKIE, HeaderValue::from_static(<span class="string">&quot;foo=bar&quot;</span>));

     <span class="kw">let </span>next = Url::parse(<span class="string">&quot;http://initial-domain.com/path&quot;</span>).unwrap();
     <span class="kw">let </span><span class="kw-2">mut </span>prev = <span class="macro">vec!</span>[Url::parse(<span class="string">&quot;http://initial-domain.com/new_path&quot;</span>).unwrap()];
     <span class="kw">let </span><span class="kw-2">mut </span>filtered_headers = headers.clone();

     remove_sensitive_headers(<span class="kw-2">&amp;mut </span>headers, <span class="kw-2">&amp;</span>next, <span class="kw-2">&amp;</span>prev);
     <span class="macro">assert_eq!</span>(headers, filtered_headers);

     prev.push(Url::parse(<span class="string">&quot;http://new-domain.com/path&quot;</span>).unwrap());
     filtered_headers.remove(AUTHORIZATION);
     filtered_headers.remove(COOKIE);

     remove_sensitive_headers(<span class="kw-2">&amp;mut </span>headers, <span class="kw-2">&amp;</span>next, <span class="kw-2">&amp;</span>prev);
     <span class="macro">assert_eq!</span>(headers, filtered_headers);
 }
 </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>