Google Git
Sign in
apache / incubator-teaclave-website / refs/heads/asf-site / . / api-docs / crates-enclave / src / hyper / proto / h1 / dispatch.rs.html
blob: 0a89830923d8fb2bdf3054ab94093bd9d4ac1d6a [file] [log] [blame]
<!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/hyper-0.14.26/src/proto/h1/dispatch.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>dispatch.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="../../../../hyper/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="../../../../hyper/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>
<span id="422">422</span>
<span id="423">423</span>
<span id="424">424</span>
<span id="425">425</span>
<span id="426">426</span>
<span id="427">427</span>
<span id="428">428</span>
<span id="429">429</span>
<span id="430">430</span>
<span id="431">431</span>
<span id="432">432</span>
<span id="433">433</span>
<span id="434">434</span>
<span id="435">435</span>
<span id="436">436</span>
<span id="437">437</span>
<span id="438">438</span>
<span id="439">439</span>
<span id="440">440</span>
<span id="441">441</span>
<span id="442">442</span>
<span id="443">443</span>
<span id="444">444</span>
<span id="445">445</span>
<span id="446">446</span>
<span id="447">447</span>
<span id="448">448</span>
<span id="449">449</span>
<span id="450">450</span>
<span id="451">451</span>
<span id="452">452</span>
<span id="453">453</span>
<span id="454">454</span>
<span id="455">455</span>
<span id="456">456</span>
<span id="457">457</span>
<span id="458">458</span>
<span id="459">459</span>
<span id="460">460</span>
<span id="461">461</span>
<span id="462">462</span>
<span id="463">463</span>
<span id="464">464</span>
<span id="465">465</span>
<span id="466">466</span>
<span id="467">467</span>
<span id="468">468</span>
<span id="469">469</span>
<span id="470">470</span>
<span id="471">471</span>
<span id="472">472</span>
<span id="473">473</span>
<span id="474">474</span>
<span id="475">475</span>
<span id="476">476</span>
<span id="477">477</span>
<span id="478">478</span>
<span id="479">479</span>
<span id="480">480</span>
<span id="481">481</span>
<span id="482">482</span>
<span id="483">483</span>
<span id="484">484</span>
<span id="485">485</span>
<span id="486">486</span>
<span id="487">487</span>
<span id="488">488</span>
<span id="489">489</span>
<span id="490">490</span>
<span id="491">491</span>
<span id="492">492</span>
<span id="493">493</span>
<span id="494">494</span>
<span id="495">495</span>
<span id="496">496</span>
<span id="497">497</span>
<span id="498">498</span>
<span id="499">499</span>
<span id="500">500</span>
<span id="501">501</span>
<span id="502">502</span>
<span id="503">503</span>
<span id="504">504</span>
<span id="505">505</span>
<span id="506">506</span>
<span id="507">507</span>
<span id="508">508</span>
<span id="509">509</span>
<span id="510">510</span>
<span id="511">511</span>
<span id="512">512</span>
<span id="513">513</span>
<span id="514">514</span>
<span id="515">515</span>
<span id="516">516</span>
<span id="517">517</span>
<span id="518">518</span>
<span id="519">519</span>
<span id="520">520</span>
<span id="521">521</span>
<span id="522">522</span>
<span id="523">523</span>
<span id="524">524</span>
<span id="525">525</span>
<span id="526">526</span>
<span id="527">527</span>
<span id="528">528</span>
<span id="529">529</span>
<span id="530">530</span>
<span id="531">531</span>
<span id="532">532</span>
<span id="533">533</span>
<span id="534">534</span>
<span id="535">535</span>
<span id="536">536</span>
<span id="537">537</span>
<span id="538">538</span>
<span id="539">539</span>
<span id="540">540</span>
<span id="541">541</span>
<span id="542">542</span>
<span id="543">543</span>
<span id="544">544</span>
<span id="545">545</span>
<span id="546">546</span>
<span id="547">547</span>
<span id="548">548</span>
<span id="549">549</span>
<span id="550">550</span>
<span id="551">551</span>
<span id="552">552</span>
<span id="553">553</span>
<span id="554">554</span>
<span id="555">555</span>
<span id="556">556</span>
<span id="557">557</span>
<span id="558">558</span>
<span id="559">559</span>
<span id="560">560</span>
<span id="561">561</span>
<span id="562">562</span>
<span id="563">563</span>
<span id="564">564</span>
<span id="565">565</span>
<span id="566">566</span>
<span id="567">567</span>
<span id="568">568</span>
<span id="569">569</span>
<span id="570">570</span>
<span id="571">571</span>
<span id="572">572</span>
<span id="573">573</span>
<span id="574">574</span>
<span id="575">575</span>
<span id="576">576</span>
<span id="577">577</span>
<span id="578">578</span>
<span id="579">579</span>
<span id="580">580</span>
<span id="581">581</span>
<span id="582">582</span>
<span id="583">583</span>
<span id="584">584</span>
<span id="585">585</span>
<span id="586">586</span>
<span id="587">587</span>
<span id="588">588</span>
<span id="589">589</span>
<span id="590">590</span>
<span id="591">591</span>
<span id="592">592</span>
<span id="593">593</span>
<span id="594">594</span>
<span id="595">595</span>
<span id="596">596</span>
<span id="597">597</span>
<span id="598">598</span>
<span id="599">599</span>
<span id="600">600</span>
<span id="601">601</span>
<span id="602">602</span>
<span id="603">603</span>
<span id="604">604</span>
<span id="605">605</span>
<span id="606">606</span>
<span id="607">607</span>
<span id="608">608</span>
<span id="609">609</span>
<span id="610">610</span>
<span id="611">611</span>
<span id="612">612</span>
<span id="613">613</span>
<span id="614">614</span>
<span id="615">615</span>
<span id="616">616</span>
<span id="617">617</span>
<span id="618">618</span>
<span id="619">619</span>
<span id="620">620</span>
<span id="621">621</span>
<span id="622">622</span>
<span id="623">623</span>
<span id="624">624</span>
<span id="625">625</span>
<span id="626">626</span>
<span id="627">627</span>
<span id="628">628</span>
<span id="629">629</span>
<span id="630">630</span>
<span id="631">631</span>
<span id="632">632</span>
<span id="633">633</span>
<span id="634">634</span>
<span id="635">635</span>
<span id="636">636</span>
<span id="637">637</span>
<span id="638">638</span>
<span id="639">639</span>
<span id="640">640</span>
<span id="641">641</span>
<span id="642">642</span>
<span id="643">643</span>
<span id="644">644</span>
<span id="645">645</span>
<span id="646">646</span>
<span id="647">647</span>
<span id="648">648</span>
<span id="649">649</span>
<span id="650">650</span>
<span id="651">651</span>
<span id="652">652</span>
<span id="653">653</span>
<span id="654">654</span>
<span id="655">655</span>
<span id="656">656</span>
<span id="657">657</span>
<span id="658">658</span>
<span id="659">659</span>
<span id="660">660</span>
<span id="661">661</span>
<span id="662">662</span>
<span id="663">663</span>
<span id="664">664</span>
<span id="665">665</span>
<span id="666">666</span>
<span id="667">667</span>
<span id="668">668</span>
<span id="669">669</span>
<span id="670">670</span>
<span id="671">671</span>
<span id="672">672</span>
<span id="673">673</span>
<span id="674">674</span>
<span id="675">675</span>
<span id="676">676</span>
<span id="677">677</span>
<span id="678">678</span>
<span id="679">679</span>
<span id="680">680</span>
<span id="681">681</span>
<span id="682">682</span>
<span id="683">683</span>
<span id="684">684</span>
<span id="685">685</span>
<span id="686">686</span>
<span id="687">687</span>
<span id="688">688</span>
<span id="689">689</span>
<span id="690">690</span>
<span id="691">691</span>
<span id="692">692</span>
<span id="693">693</span>
<span id="694">694</span>
<span id="695">695</span>
<span id="696">696</span>
<span id="697">697</span>
<span id="698">698</span>
<span id="699">699</span>
<span id="700">700</span>
<span id="701">701</span>
<span id="702">702</span>
<span id="703">703</span>
<span id="704">704</span>
<span id="705">705</span>
<span id="706">706</span>
<span id="707">707</span>
<span id="708">708</span>
<span id="709">709</span>
<span id="710">710</span>
<span id="711">711</span>
<span id="712">712</span>
<span id="713">713</span>
<span id="714">714</span>
<span id="715">715</span>
<span id="716">716</span>
<span id="717">717</span>
<span id="718">718</span>
<span id="719">719</span>
<span id="720">720</span>
<span id="721">721</span>
<span id="722">722</span>
<span id="723">723</span>
<span id="724">724</span>
<span id="725">725</span>
<span id="726">726</span>
<span id="727">727</span>
<span id="728">728</span>
<span id="729">729</span>
<span id="730">730</span>
<span id="731">731</span>
<span id="732">732</span>
<span id="733">733</span>
<span id="734">734</span>
<span id="735">735</span>
<span id="736">736</span>
<span id="737">737</span>
<span id="738">738</span>
<span id="739">739</span>
<span id="740">740</span>
<span id="741">741</span>
<span id="742">742</span>
<span id="743">743</span>
<span id="744">744</span>
<span id="745">745</span>
<span id="746">746</span>
<span id="747">747</span>
<span id="748">748</span>
<span id="749">749</span>
<span id="750">750</span>
</pre><pre class="rust"><code><span class="kw">use </span>std::error::Error <span class="kw">as </span>StdError;
<span class="kw">use </span>bytes::{Buf, Bytes};
<span class="kw">use </span>http::Request;
<span class="kw">use </span>tokio::io::{AsyncRead, AsyncWrite};
<span class="kw">use </span>tracing::{debug, trace};
<span class="kw">use super</span>::{Http1Transaction, Wants};
<span class="kw">use </span><span class="kw">crate</span>::body::{Body, DecodedLength, HttpBody};
<span class="kw">use </span><span class="kw">crate</span>::common::{task, Future, Pin, Poll, Unpin};
<span class="kw">use </span><span class="kw">crate</span>::proto::{
BodyLength, Conn, Dispatched, MessageHead, RequestHead,
};
<span class="kw">use </span><span class="kw">crate</span>::upgrade::OnUpgrade;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Dispatcher&lt;D, Bs: HttpBody, I, T&gt; {
conn: Conn&lt;I, Bs::Data, T&gt;,
dispatch: D,
body_tx: <span class="prelude-ty">Option</span>&lt;<span class="kw">crate</span>::body::Sender&gt;,
body_rx: Pin&lt;Box&lt;<span class="prelude-ty">Option</span>&lt;Bs&gt;&gt;&gt;,
is_closing: bool,
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">trait </span>Dispatch {
<span class="kw">type </span>PollItem;
<span class="kw">type </span>PollBody;
<span class="kw">type </span>PollError;
<span class="kw">type </span>RecvItem;
<span class="kw">fn </span>poll_msg(
<span class="self">self</span>: Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;,
) -&gt; Poll&lt;<span class="prelude-ty">Option</span>&lt;<span class="prelude-ty">Result</span>&lt;(<span class="self">Self</span>::PollItem, <span class="self">Self</span>::PollBody), <span class="self">Self</span>::PollError&gt;&gt;&gt;;
<span class="kw">fn </span>recv_msg(<span class="kw-2">&amp;mut </span><span class="self">self</span>, msg: <span class="kw">crate</span>::Result&lt;(<span class="self">Self</span>::RecvItem, Body)&gt;) -&gt; <span class="kw">crate</span>::Result&lt;()&gt;;
<span class="kw">fn </span>poll_ready(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="prelude-ty">Result</span>&lt;(), ()&gt;&gt;;
<span class="kw">fn </span>should_poll(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool;
}
<span class="macro">cfg_server! </span>{
<span class="kw">use </span><span class="kw">crate</span>::service::HttpService;
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Server&lt;S: HttpService&lt;B&gt;, B&gt; {
in_flight: Pin&lt;Box&lt;<span class="prelude-ty">Option</span>&lt;S::Future&gt;&gt;&gt;,
<span class="kw">pub</span>(<span class="kw">crate</span>) service: S,
}
}
<span class="macro">cfg_client! </span>{
<span class="macro">pin_project_lite::pin_project! </span>{
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct </span>Client&lt;B&gt; {
callback: <span class="prelude-ty">Option</span>&lt;<span class="kw">crate</span>::client::dispatch::Callback&lt;Request&lt;B&gt;, http::Response&lt;Body&gt;&gt;&gt;,
<span class="attribute">#[pin]
</span>rx: ClientRx&lt;B&gt;,
rx_closed: bool,
}
}
<span class="kw">type </span>ClientRx&lt;B&gt; = <span class="kw">crate</span>::client::dispatch::Receiver&lt;Request&lt;B&gt;, http::Response&lt;Body&gt;&gt;;
}
<span class="kw">impl</span>&lt;D, Bs, I, T&gt; Dispatcher&lt;D, Bs, I, T&gt;
<span class="kw">where
</span>D: Dispatch&lt;
PollItem = MessageHead&lt;T::Outgoing&gt;,
PollBody = Bs,
RecvItem = MessageHead&lt;T::Incoming&gt;,
&gt; + Unpin,
D::PollError: Into&lt;Box&lt;<span class="kw">dyn </span>StdError + Send + Sync&gt;&gt;,
I: AsyncRead + AsyncWrite + Unpin,
T: Http1Transaction + Unpin,
Bs: HttpBody + <span class="lifetime">&#39;static</span>,
Bs::Error: Into&lt;Box&lt;<span class="kw">dyn </span>StdError + Send + Sync&gt;&gt;,
{
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new(dispatch: D, conn: Conn&lt;I, Bs::Data, T&gt;) -&gt; <span class="self">Self </span>{
Dispatcher {
conn,
dispatch,
body_tx: <span class="prelude-val">None</span>,
body_rx: Box::pin(<span class="prelude-val">None</span>),
is_closing: <span class="bool-val">false</span>,
}
}
<span class="attribute">#[cfg(feature = <span class="string">&quot;server&quot;</span>)]
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>disable_keep_alive(<span class="kw-2">&amp;mut </span><span class="self">self</span>) {
<span class="self">self</span>.conn.disable_keep_alive();
<span class="kw">if </span><span class="self">self</span>.conn.is_write_closed() {
<span class="self">self</span>.close();
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>into_inner(<span class="self">self</span>) -&gt; (I, Bytes, D) {
<span class="kw">let </span>(io, buf) = <span class="self">self</span>.conn.into_inner();
(io, buf, <span class="self">self</span>.dispatch)
}
<span class="doccomment">/// Run this dispatcher until HTTP says this connection is done,
/// but don&#39;t call `AsyncWrite::shutdown` on the underlying IO.
///
/// This is useful for old-style HTTP upgrades, but ignores
/// newer-style upgrade API.
</span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>poll_without_shutdown(
<span class="kw-2">&amp;mut </span><span class="self">self</span>,
cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;,
) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;()&gt;&gt;
<span class="kw">where
</span><span class="self">Self</span>: Unpin,
{
Pin::new(<span class="self">self</span>).poll_catch(cx, <span class="bool-val">false</span>).map_ok(|ds| {
<span class="kw">if let </span>Dispatched::Upgrade(pending) = ds {
pending.manual();
}
})
}
<span class="kw">fn </span>poll_catch(
<span class="kw-2">&amp;mut </span><span class="self">self</span>,
cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;,
should_shutdown: bool,
) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;Dispatched&gt;&gt; {
Poll::Ready(<span class="macro">ready!</span>(<span class="self">self</span>.poll_inner(cx, should_shutdown)).or_else(|e| {
<span class="comment">// An error means we&#39;re shutting down either way.
// We just try to give the error to the user,
// and close the connection with an Ok. If we
// cannot give it to the user, then return the Err.
</span><span class="self">self</span>.dispatch.recv_msg(<span class="prelude-val">Err</span>(e))<span class="question-mark">?</span>;
<span class="prelude-val">Ok</span>(Dispatched::Shutdown)
}))
}
<span class="kw">fn </span>poll_inner(
<span class="kw-2">&amp;mut </span><span class="self">self</span>,
cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;,
should_shutdown: bool,
) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;Dispatched&gt;&gt; {
T::update_date();
<span class="macro">ready!</span>(<span class="self">self</span>.poll_loop(cx))<span class="question-mark">?</span>;
<span class="kw">if </span><span class="self">self</span>.is_done() {
<span class="kw">if let </span><span class="prelude-val">Some</span>(pending) = <span class="self">self</span>.conn.pending_upgrade() {
<span class="self">self</span>.conn.take_error()<span class="question-mark">?</span>;
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(Dispatched::Upgrade(pending)));
} <span class="kw">else if </span>should_shutdown {
<span class="macro">ready!</span>(<span class="self">self</span>.conn.poll_shutdown(cx)).map_err(<span class="kw">crate</span>::Error::new_shutdown)<span class="question-mark">?</span>;
}
<span class="self">self</span>.conn.take_error()<span class="question-mark">?</span>;
Poll::Ready(<span class="prelude-val">Ok</span>(Dispatched::Shutdown))
} <span class="kw">else </span>{
Poll::Pending
}
}
<span class="kw">fn </span>poll_loop(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;()&gt;&gt; {
<span class="comment">// Limit the looping on this connection, in case it is ready far too
// often, so that other futures don&#39;t starve.
//
// 16 was chosen arbitrarily, as that is number of pipelined requests
// benchmarks often use. Perhaps it should be a config option instead.
</span><span class="kw">for _ in </span><span class="number">0</span>..<span class="number">16 </span>{
<span class="kw">let _ </span>= <span class="self">self</span>.poll_read(cx)<span class="question-mark">?</span>;
<span class="kw">let _ </span>= <span class="self">self</span>.poll_write(cx)<span class="question-mark">?</span>;
<span class="kw">let _ </span>= <span class="self">self</span>.poll_flush(cx)<span class="question-mark">?</span>;
<span class="comment">// This could happen if reading paused before blocking on IO,
// such as getting to the end of a framed message, but then
// writing/flushing set the state back to Init. In that case,
// if the read buffer still had bytes, we&#39;d want to try poll_read
// again, or else we wouldn&#39;t ever be woken up again.
//
// Using this instead of task::current() and notify() inside
// the Conn is noticeably faster in pipelined benchmarks.
</span><span class="kw">if </span>!<span class="self">self</span>.conn.wants_read_again() {
<span class="comment">//break;
</span><span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(()));
}
}
<span class="macro">trace!</span>(<span class="string">&quot;poll_loop yielding (self = {:p})&quot;</span>, <span class="self">self</span>);
task::yield_now(cx).map(|never| <span class="kw">match </span>never {})
}
<span class="kw">fn </span>poll_read(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;()&gt;&gt; {
<span class="kw">loop </span>{
<span class="kw">if </span><span class="self">self</span>.is_closing {
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(()));
} <span class="kw">else if </span><span class="self">self</span>.conn.can_read_head() {
<span class="macro">ready!</span>(<span class="self">self</span>.poll_read_head(cx))<span class="question-mark">?</span>;
} <span class="kw">else if let </span><span class="prelude-val">Some</span>(<span class="kw-2">mut </span>body) = <span class="self">self</span>.body_tx.take() {
<span class="kw">if </span><span class="self">self</span>.conn.can_read_body() {
<span class="kw">match </span>body.poll_ready(cx) {
Poll::Ready(<span class="prelude-val">Ok</span>(())) =&gt; (),
Poll::Pending =&gt; {
<span class="self">self</span>.body_tx = <span class="prelude-val">Some</span>(body);
<span class="kw">return </span>Poll::Pending;
}
Poll::Ready(<span class="prelude-val">Err</span>(_canceled)) =&gt; {
<span class="comment">// user doesn&#39;t care about the body
// so we should stop reading
</span><span class="macro">trace!</span>(<span class="string">&quot;body receiver dropped before eof, draining or closing&quot;</span>);
<span class="self">self</span>.conn.poll_drain_or_close_read(cx);
<span class="kw">continue</span>;
}
}
<span class="kw">match </span><span class="self">self</span>.conn.poll_read_body(cx) {
Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>(chunk))) =&gt; <span class="kw">match </span>body.try_send_data(chunk) {
<span class="prelude-val">Ok</span>(()) =&gt; {
<span class="self">self</span>.body_tx = <span class="prelude-val">Some</span>(body);
}
<span class="prelude-val">Err</span>(_canceled) =&gt; {
<span class="kw">if </span><span class="self">self</span>.conn.can_read_body() {
<span class="macro">trace!</span>(<span class="string">&quot;body receiver dropped before eof, closing&quot;</span>);
<span class="self">self</span>.conn.close_read();
}
}
},
Poll::Ready(<span class="prelude-val">None</span>) =&gt; {
<span class="comment">// just drop, the body will close automatically
</span>}
Poll::Pending =&gt; {
<span class="self">self</span>.body_tx = <span class="prelude-val">Some</span>(body);
<span class="kw">return </span>Poll::Pending;
}
Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(e))) =&gt; {
body.send_error(<span class="kw">crate</span>::Error::new_body(e));
}
}
} <span class="kw">else </span>{
<span class="comment">// just drop, the body will close automatically
</span>}
} <span class="kw">else </span>{
<span class="kw">return </span><span class="self">self</span>.conn.poll_read_keep_alive(cx);
}
}
}
<span class="kw">fn </span>poll_read_head(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;()&gt;&gt; {
<span class="comment">// can dispatch receive, or does it still care about, an incoming message?
</span><span class="kw">match </span><span class="macro">ready!</span>(<span class="self">self</span>.dispatch.poll_ready(cx)) {
<span class="prelude-val">Ok</span>(()) =&gt; (),
<span class="prelude-val">Err</span>(()) =&gt; {
<span class="macro">trace!</span>(<span class="string">&quot;dispatch no longer receiving messages&quot;</span>);
<span class="self">self</span>.close();
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(()));
}
}
<span class="comment">// dispatch is ready for a message, try to read one
</span><span class="kw">match </span><span class="macro">ready!</span>(<span class="self">self</span>.conn.poll_read_head(cx)) {
<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>((<span class="kw-2">mut </span>head, body_len, wants))) =&gt; {
<span class="kw">let </span>body = <span class="kw">match </span>body_len {
DecodedLength::ZERO =&gt; Body::empty(),
other =&gt; {
<span class="kw">let </span>(tx, rx) = Body::new_channel(other, wants.contains(Wants::EXPECT));
<span class="self">self</span>.body_tx = <span class="prelude-val">Some</span>(tx);
rx
}
};
<span class="kw">if </span>wants.contains(Wants::UPGRADE) {
<span class="kw">let </span>upgrade = <span class="self">self</span>.conn.on_upgrade();
<span class="macro">debug_assert!</span>(!upgrade.is_none(), <span class="string">&quot;empty upgrade&quot;</span>);
<span class="macro">debug_assert!</span>(head.extensions.get::&lt;OnUpgrade&gt;().is_none(), <span class="string">&quot;OnUpgrade already set&quot;</span>);
head.extensions.insert(upgrade);
}
<span class="self">self</span>.dispatch.recv_msg(<span class="prelude-val">Ok</span>((head, body)))<span class="question-mark">?</span>;
Poll::Ready(<span class="prelude-val">Ok</span>(()))
}
<span class="prelude-val">Some</span>(<span class="prelude-val">Err</span>(err)) =&gt; {
<span class="macro">debug!</span>(<span class="string">&quot;read_head error: {}&quot;</span>, err);
<span class="self">self</span>.dispatch.recv_msg(<span class="prelude-val">Err</span>(err))<span class="question-mark">?</span>;
<span class="comment">// if here, the dispatcher gave the user the error
// somewhere else. we still need to shutdown, but
// not as a second error.
</span><span class="self">self</span>.close();
Poll::Ready(<span class="prelude-val">Ok</span>(()))
}
<span class="prelude-val">None </span>=&gt; {
<span class="comment">// read eof, the write side will have been closed too unless
// allow_read_close was set to true, in which case just do
// nothing...
</span><span class="macro">debug_assert!</span>(<span class="self">self</span>.conn.is_read_closed());
<span class="kw">if </span><span class="self">self</span>.conn.is_write_closed() {
<span class="self">self</span>.close();
}
Poll::Ready(<span class="prelude-val">Ok</span>(()))
}
}
}
<span class="kw">fn </span>poll_write(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;()&gt;&gt; {
<span class="kw">loop </span>{
<span class="kw">if </span><span class="self">self</span>.is_closing {
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(()));
} <span class="kw">else if </span><span class="self">self</span>.body_rx.is_none()
&amp;&amp; <span class="self">self</span>.conn.can_write_head()
&amp;&amp; <span class="self">self</span>.dispatch.should_poll()
{
<span class="kw">if let </span><span class="prelude-val">Some</span>(msg) = <span class="macro">ready!</span>(Pin::new(<span class="kw-2">&amp;mut </span><span class="self">self</span>.dispatch).poll_msg(cx)) {
<span class="kw">let </span>(head, <span class="kw-2">mut </span>body) = msg.map_err(<span class="kw">crate</span>::Error::new_user_service)<span class="question-mark">?</span>;
<span class="comment">// Check if the body knows its full data immediately.
//
// If so, we can skip a bit of bookkeeping that streaming
// bodies need to do.
</span><span class="kw">if let </span><span class="prelude-val">Some</span>(full) = <span class="kw">crate</span>::body::take_full_data(<span class="kw-2">&amp;mut </span>body) {
<span class="self">self</span>.conn.write_full_msg(head, full);
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(()));
}
<span class="kw">let </span>body_type = <span class="kw">if </span>body.is_end_stream() {
<span class="self">self</span>.body_rx.set(<span class="prelude-val">None</span>);
<span class="prelude-val">None
</span>} <span class="kw">else </span>{
<span class="kw">let </span>btype = body
.size_hint()
.exact()
.map(BodyLength::Known)
.or_else(|| <span class="prelude-val">Some</span>(BodyLength::Unknown));
<span class="self">self</span>.body_rx.set(<span class="prelude-val">Some</span>(body));
btype
};
<span class="self">self</span>.conn.write_head(head, body_type);
} <span class="kw">else </span>{
<span class="self">self</span>.close();
<span class="kw">return </span>Poll::Ready(<span class="prelude-val">Ok</span>(()));
}
} <span class="kw">else if </span>!<span class="self">self</span>.conn.can_buffer_body() {
<span class="macro">ready!</span>(<span class="self">self</span>.poll_flush(cx))<span class="question-mark">?</span>;
} <span class="kw">else </span>{
<span class="comment">// A new scope is needed :(
</span><span class="kw">if let </span>(<span class="prelude-val">Some</span>(<span class="kw-2">mut </span>body), clear_body) =
OptGuard::new(<span class="self">self</span>.body_rx.as_mut()).guard_mut()
{
<span class="macro">debug_assert!</span>(!<span class="kw-2">*</span>clear_body, <span class="string">&quot;opt guard defaults to keeping body&quot;</span>);
<span class="kw">if </span>!<span class="self">self</span>.conn.can_write_body() {
<span class="macro">trace!</span>(
<span class="string">&quot;no more write body allowed, user body is_end_stream = {}&quot;</span>,
body.is_end_stream(),
);
<span class="kw-2">*</span>clear_body = <span class="bool-val">true</span>;
<span class="kw">continue</span>;
}
<span class="kw">let </span>item = <span class="macro">ready!</span>(body.as_mut().poll_data(cx));
<span class="kw">if let </span><span class="prelude-val">Some</span>(item) = item {
<span class="kw">let </span>chunk = item.map_err(|e| {
<span class="kw-2">*</span>clear_body = <span class="bool-val">true</span>;
<span class="kw">crate</span>::Error::new_user_body(e)
})<span class="question-mark">?</span>;
<span class="kw">let </span>eos = body.is_end_stream();
<span class="kw">if </span>eos {
<span class="kw-2">*</span>clear_body = <span class="bool-val">true</span>;
<span class="kw">if </span>chunk.remaining() == <span class="number">0 </span>{
<span class="macro">trace!</span>(<span class="string">&quot;discarding empty chunk&quot;</span>);
<span class="self">self</span>.conn.end_body()<span class="question-mark">?</span>;
} <span class="kw">else </span>{
<span class="self">self</span>.conn.write_body_and_end(chunk);
}
} <span class="kw">else </span>{
<span class="kw">if </span>chunk.remaining() == <span class="number">0 </span>{
<span class="macro">trace!</span>(<span class="string">&quot;discarding empty chunk&quot;</span>);
<span class="kw">continue</span>;
}
<span class="self">self</span>.conn.write_body(chunk);
}
} <span class="kw">else </span>{
<span class="kw-2">*</span>clear_body = <span class="bool-val">true</span>;
<span class="self">self</span>.conn.end_body()<span class="question-mark">?</span>;
}
} <span class="kw">else </span>{
<span class="kw">return </span>Poll::Pending;
}
}
}
}
<span class="kw">fn </span>poll_flush(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="kw">crate</span>::Result&lt;()&gt;&gt; {
<span class="self">self</span>.conn.poll_flush(cx).map_err(|err| {
<span class="macro">debug!</span>(<span class="string">&quot;error writing: {}&quot;</span>, err);
<span class="kw">crate</span>::Error::new_body_write(err)
})
}
<span class="kw">fn </span>close(<span class="kw-2">&amp;mut </span><span class="self">self</span>) {
<span class="self">self</span>.is_closing = <span class="bool-val">true</span>;
<span class="self">self</span>.conn.close_read();
<span class="self">self</span>.conn.close_write();
}
<span class="kw">fn </span>is_done(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
<span class="kw">if </span><span class="self">self</span>.is_closing {
<span class="kw">return </span><span class="bool-val">true</span>;
}
<span class="kw">let </span>read_done = <span class="self">self</span>.conn.is_read_closed();
<span class="kw">if </span>!T::should_read_first() &amp;&amp; read_done {
<span class="comment">// a client that cannot read may was well be done.
</span><span class="bool-val">true
</span>} <span class="kw">else </span>{
<span class="kw">let </span>write_done = <span class="self">self</span>.conn.is_write_closed()
|| (!<span class="self">self</span>.dispatch.should_poll() &amp;&amp; <span class="self">self</span>.body_rx.is_none());
read_done &amp;&amp; write_done
}
}
}
<span class="kw">impl</span>&lt;D, Bs, I, T&gt; Future <span class="kw">for </span>Dispatcher&lt;D, Bs, I, T&gt;
<span class="kw">where
</span>D: Dispatch&lt;
PollItem = MessageHead&lt;T::Outgoing&gt;,
PollBody = Bs,
RecvItem = MessageHead&lt;T::Incoming&gt;,
&gt; + Unpin,
D::PollError: Into&lt;Box&lt;<span class="kw">dyn </span>StdError + Send + Sync&gt;&gt;,
I: AsyncRead + AsyncWrite + Unpin,
T: Http1Transaction + Unpin,
Bs: HttpBody + <span class="lifetime">&#39;static</span>,
Bs::Error: Into&lt;Box&lt;<span class="kw">dyn </span>StdError + Send + Sync&gt;&gt;,
{
<span class="kw">type </span>Output = <span class="kw">crate</span>::Result&lt;Dispatched&gt;;
<span class="attribute">#[inline]
</span><span class="kw">fn </span>poll(<span class="kw-2">mut </span><span class="self">self</span>: Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="self">Self</span>::Output&gt; {
<span class="self">self</span>.poll_catch(cx, <span class="bool-val">true</span>)
}
}
<span class="comment">// ===== impl OptGuard =====
</span><span class="doccomment">/// A drop guard to allow a mutable borrow of an Option while being able to
/// set whether the `Option` should be cleared on drop.
</span><span class="kw">struct </span>OptGuard&lt;<span class="lifetime">&#39;a</span>, T&gt;(Pin&lt;<span class="kw-2">&amp;</span><span class="lifetime">&#39;a </span><span class="kw-2">mut </span><span class="prelude-ty">Option</span>&lt;T&gt;&gt;, bool);
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; OptGuard&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>new(pin: Pin&lt;<span class="kw-2">&amp;</span><span class="lifetime">&#39;a </span><span class="kw-2">mut </span><span class="prelude-ty">Option</span>&lt;T&gt;&gt;) -&gt; <span class="self">Self </span>{
OptGuard(pin, <span class="bool-val">false</span>)
}
<span class="kw">fn </span>guard_mut(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; (<span class="prelude-ty">Option</span>&lt;Pin&lt;<span class="kw-2">&amp;mut </span>T&gt;&gt;, <span class="kw-2">&amp;mut </span>bool) {
(<span class="self">self</span>.<span class="number">0</span>.as_mut().as_pin_mut(), <span class="kw-2">&amp;mut </span><span class="self">self</span>.<span class="number">1</span>)
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; Drop <span class="kw">for </span>OptGuard&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>drop(<span class="kw-2">&amp;mut </span><span class="self">self</span>) {
<span class="kw">if </span><span class="self">self</span>.<span class="number">1 </span>{
<span class="self">self</span>.<span class="number">0</span>.set(<span class="prelude-val">None</span>);
}
}
}
<span class="comment">// ===== impl Server =====
</span><span class="macro">cfg_server! </span>{
<span class="kw">impl</span>&lt;S, B&gt; Server&lt;S, B&gt;
<span class="kw">where
</span>S: HttpService&lt;B&gt;,
{
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new(service: S) -&gt; Server&lt;S, B&gt; {
Server {
in_flight: Box::pin(<span class="prelude-val">None</span>),
service,
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>into_service(<span class="self">self</span>) -&gt; S {
<span class="self">self</span>.service
}
}
<span class="comment">// Service is never pinned
</span><span class="kw">impl</span>&lt;S: HttpService&lt;B&gt;, B&gt; Unpin <span class="kw">for </span>Server&lt;S, B&gt; {}
<span class="kw">impl</span>&lt;S, Bs&gt; Dispatch <span class="kw">for </span>Server&lt;S, Body&gt;
<span class="kw">where
</span>S: HttpService&lt;Body, ResBody = Bs&gt;,
S::Error: Into&lt;Box&lt;<span class="kw">dyn </span>StdError + Send + Sync&gt;&gt;,
Bs: HttpBody,
{
<span class="kw">type </span>PollItem = MessageHead&lt;http::StatusCode&gt;;
<span class="kw">type </span>PollBody = Bs;
<span class="kw">type </span>PollError = S::Error;
<span class="kw">type </span>RecvItem = RequestHead;
<span class="kw">fn </span>poll_msg(
<span class="kw-2">mut </span><span class="self">self</span>: Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;,
) -&gt; Poll&lt;<span class="prelude-ty">Option</span>&lt;<span class="prelude-ty">Result</span>&lt;(<span class="self">Self</span>::PollItem, <span class="self">Self</span>::PollBody), <span class="self">Self</span>::PollError&gt;&gt;&gt; {
<span class="kw">let </span><span class="kw-2">mut </span>this = <span class="self">self</span>.as_mut();
<span class="kw">let </span>ret = <span class="kw">if let </span><span class="prelude-val">Some</span>(<span class="kw-2">ref mut </span>fut) = this.in_flight.as_mut().as_pin_mut() {
<span class="kw">let </span>resp = <span class="macro">ready!</span>(fut.as_mut().poll(cx)<span class="question-mark">?</span>);
<span class="kw">let </span>(parts, body) = resp.into_parts();
<span class="kw">let </span>head = MessageHead {
version: parts.version,
subject: parts.status,
headers: parts.headers,
extensions: parts.extensions,
};
Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>((head, body))))
} <span class="kw">else </span>{
<span class="macro">unreachable!</span>(<span class="string">&quot;poll_msg shouldn&#39;t be called if no inflight&quot;</span>);
};
<span class="comment">// Since in_flight finished, remove it
</span>this.in_flight.set(<span class="prelude-val">None</span>);
ret
}
<span class="kw">fn </span>recv_msg(<span class="kw-2">&amp;mut </span><span class="self">self</span>, msg: <span class="kw">crate</span>::Result&lt;(<span class="self">Self</span>::RecvItem, Body)&gt;) -&gt; <span class="kw">crate</span>::Result&lt;()&gt; {
<span class="kw">let </span>(msg, body) = msg<span class="question-mark">?</span>;
<span class="kw">let </span><span class="kw-2">mut </span>req = Request::new(body);
<span class="kw-2">*</span>req.method_mut() = msg.subject.<span class="number">0</span>;
<span class="kw-2">*</span>req.uri_mut() = msg.subject.<span class="number">1</span>;
<span class="kw-2">*</span>req.headers_mut() = msg.headers;
<span class="kw-2">*</span>req.version_mut() = msg.version;
<span class="kw-2">*</span>req.extensions_mut() = msg.extensions;
<span class="kw">let </span>fut = <span class="self">self</span>.service.call(req);
<span class="self">self</span>.in_flight.set(<span class="prelude-val">Some</span>(fut));
<span class="prelude-val">Ok</span>(())
}
<span class="kw">fn </span>poll_ready(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="prelude-ty">Result</span>&lt;(), ()&gt;&gt; {
<span class="kw">if </span><span class="self">self</span>.in_flight.is_some() {
Poll::Pending
} <span class="kw">else </span>{
<span class="self">self</span>.service.poll_ready(cx).map_err(|_e| {
<span class="comment">// FIXME: return error value.
</span><span class="macro">trace!</span>(<span class="string">&quot;service closed&quot;</span>);
})
}
}
<span class="kw">fn </span>should_poll(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
<span class="self">self</span>.in_flight.is_some()
}
}
}
<span class="comment">// ===== impl Client =====
</span><span class="macro">cfg_client! </span>{
<span class="kw">impl</span>&lt;B&gt; Client&lt;B&gt; {
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>new(rx: ClientRx&lt;B&gt;) -&gt; Client&lt;B&gt; {
Client {
callback: <span class="prelude-val">None</span>,
rx,
rx_closed: <span class="bool-val">false</span>,
}
}
}
<span class="kw">impl</span>&lt;B&gt; Dispatch <span class="kw">for </span>Client&lt;B&gt;
<span class="kw">where
</span>B: HttpBody,
{
<span class="kw">type </span>PollItem = RequestHead;
<span class="kw">type </span>PollBody = B;
<span class="kw">type </span>PollError = <span class="kw">crate</span>::common::Never;
<span class="kw">type </span>RecvItem = <span class="kw">crate</span>::proto::ResponseHead;
<span class="kw">fn </span>poll_msg(
<span class="kw-2">mut </span><span class="self">self</span>: Pin&lt;<span class="kw-2">&amp;mut </span><span class="self">Self</span>&gt;,
cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;,
) -&gt; Poll&lt;<span class="prelude-ty">Option</span>&lt;<span class="prelude-ty">Result</span>&lt;(<span class="self">Self</span>::PollItem, <span class="self">Self</span>::PollBody), <span class="kw">crate</span>::common::Never&gt;&gt;&gt; {
<span class="kw">let </span><span class="kw-2">mut </span>this = <span class="self">self</span>.as_mut();
<span class="macro">debug_assert!</span>(!this.rx_closed);
<span class="kw">match </span>this.rx.poll_recv(cx) {
Poll::Ready(<span class="prelude-val">Some</span>((req, <span class="kw-2">mut </span>cb))) =&gt; {
<span class="comment">// check that future hasn&#39;t been canceled already
</span><span class="kw">match </span>cb.poll_canceled(cx) {
Poll::Ready(()) =&gt; {
<span class="macro">trace!</span>(<span class="string">&quot;request canceled&quot;</span>);
Poll::Ready(<span class="prelude-val">None</span>)
}
Poll::Pending =&gt; {
<span class="kw">let </span>(parts, body) = req.into_parts();
<span class="kw">let </span>head = RequestHead {
version: parts.version,
subject: <span class="kw">crate</span>::proto::RequestLine(parts.method, parts.uri),
headers: parts.headers,
extensions: parts.extensions,
};
this.callback = <span class="prelude-val">Some</span>(cb);
Poll::Ready(<span class="prelude-val">Some</span>(<span class="prelude-val">Ok</span>((head, body))))
}
}
}
Poll::Ready(<span class="prelude-val">None</span>) =&gt; {
<span class="comment">// user has dropped sender handle
</span><span class="macro">trace!</span>(<span class="string">&quot;client tx closed&quot;</span>);
this.rx_closed = <span class="bool-val">true</span>;
Poll::Ready(<span class="prelude-val">None</span>)
}
Poll::Pending =&gt; Poll::Pending,
}
}
<span class="kw">fn </span>recv_msg(<span class="kw-2">&amp;mut </span><span class="self">self</span>, msg: <span class="kw">crate</span>::Result&lt;(<span class="self">Self</span>::RecvItem, Body)&gt;) -&gt; <span class="kw">crate</span>::Result&lt;()&gt; {
<span class="kw">match </span>msg {
<span class="prelude-val">Ok</span>((msg, body)) =&gt; {
<span class="kw">if let </span><span class="prelude-val">Some</span>(cb) = <span class="self">self</span>.callback.take() {
<span class="kw">let </span>res = msg.into_response(body);
cb.send(<span class="prelude-val">Ok</span>(res));
<span class="prelude-val">Ok</span>(())
} <span class="kw">else </span>{
<span class="comment">// Getting here is likely a bug! An error should have happened
// in Conn::require_empty_read() before ever parsing a
// full message!
</span><span class="prelude-val">Err</span>(<span class="kw">crate</span>::Error::new_unexpected_message())
}
}
<span class="prelude-val">Err</span>(err) =&gt; {
<span class="kw">if let </span><span class="prelude-val">Some</span>(cb) = <span class="self">self</span>.callback.take() {
cb.send(<span class="prelude-val">Err</span>((err, <span class="prelude-val">None</span>)));
<span class="prelude-val">Ok</span>(())
} <span class="kw">else if </span>!<span class="self">self</span>.rx_closed {
<span class="self">self</span>.rx.close();
<span class="kw">if let </span><span class="prelude-val">Some</span>((req, cb)) = <span class="self">self</span>.rx.try_recv() {
<span class="macro">trace!</span>(<span class="string">&quot;canceling queued request with connection error: {}&quot;</span>, err);
<span class="comment">// in this case, the message was never even started, so it&#39;s safe to tell
// the user that the request was completely canceled
</span>cb.send(<span class="prelude-val">Err</span>((<span class="kw">crate</span>::Error::new_canceled().with(err), <span class="prelude-val">Some</span>(req))));
<span class="prelude-val">Ok</span>(())
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(err)
}
} <span class="kw">else </span>{
<span class="prelude-val">Err</span>(err)
}
}
}
}
<span class="kw">fn </span>poll_ready(<span class="kw-2">&amp;mut </span><span class="self">self</span>, cx: <span class="kw-2">&amp;mut </span>task::Context&lt;<span class="lifetime">&#39;_</span>&gt;) -&gt; Poll&lt;<span class="prelude-ty">Result</span>&lt;(), ()&gt;&gt; {
<span class="kw">match </span><span class="self">self</span>.callback {
<span class="prelude-val">Some</span>(<span class="kw-2">ref mut </span>cb) =&gt; <span class="kw">match </span>cb.poll_canceled(cx) {
Poll::Ready(()) =&gt; {
<span class="macro">trace!</span>(<span class="string">&quot;callback receiver has dropped&quot;</span>);
Poll::Ready(<span class="prelude-val">Err</span>(()))
}
Poll::Pending =&gt; Poll::Ready(<span class="prelude-val">Ok</span>(())),
},
<span class="prelude-val">None </span>=&gt; Poll::Ready(<span class="prelude-val">Err</span>(())),
}
}
<span class="kw">fn </span>should_poll(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
<span class="self">self</span>.callback.is_none()
}
}
}
<span class="attribute">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use super</span>::<span class="kw-2">*</span>;
<span class="kw">use </span><span class="kw">crate</span>::proto::h1::ClientTransaction;
<span class="kw">use </span>std::time::Duration;
<span class="attribute">#[test]
</span><span class="kw">fn </span>client_read_bytes_before_writing_request() {
<span class="kw">let _ </span>= pretty_env_logger::try_init();
tokio_test::task::spawn(()).enter(|cx, <span class="kw">_</span>| {
<span class="kw">let </span>(io, <span class="kw-2">mut </span>handle) = tokio_test::io::Builder::new().build_with_handle();
<span class="comment">// Block at 0 for now, but we will release this response before
// the request is ready to write later...
</span><span class="kw">let </span>(<span class="kw-2">mut </span>tx, rx) = <span class="kw">crate</span>::client::dispatch::channel();
<span class="kw">let </span>conn = Conn::&lt;<span class="kw">_</span>, bytes::Bytes, ClientTransaction&gt;::new(io);
<span class="kw">let </span><span class="kw-2">mut </span>dispatcher = Dispatcher::new(Client::new(rx), conn);
<span class="comment">// First poll is needed to allow tx to send...
</span><span class="macro">assert!</span>(Pin::new(<span class="kw-2">&amp;mut </span>dispatcher).poll(cx).is_pending());
<span class="comment">// Unblock our IO, which has a response before we&#39;ve sent request!
//
</span>handle.read(<span class="string">b&quot;HTTP/1.1 200 OK\r\n\r\n&quot;</span>);
<span class="kw">let </span><span class="kw-2">mut </span>res_rx = tx
.try_send(<span class="kw">crate</span>::Request::new(<span class="kw">crate</span>::Body::empty()))
.unwrap();
<span class="macro">tokio_test::assert_ready_ok!</span>(Pin::new(<span class="kw-2">&amp;mut </span>dispatcher).poll(cx));
<span class="kw">let </span>err = <span class="macro">tokio_test::assert_ready_ok!</span>(Pin::new(<span class="kw-2">&amp;mut </span>res_rx).poll(cx))
.expect_err(<span class="string">&quot;callback should send error&quot;</span>);
<span class="kw">match </span>(err.<span class="number">0</span>.kind(), err.<span class="number">1</span>) {
(<span class="kw-2">&amp;</span><span class="kw">crate</span>::error::Kind::Canceled, <span class="prelude-val">Some</span>(<span class="kw">_</span>)) =&gt; (),
other =&gt; <span class="macro">panic!</span>(<span class="string">&quot;expected Canceled, got {:?}&quot;</span>, other),
}
});
}
<span class="attribute">#[tokio::test]
</span><span class="kw">async fn </span>client_flushing_is_not_ready_for_next_request() {
<span class="kw">let _ </span>= pretty_env_logger::try_init();
<span class="kw">let </span>(io, _handle) = tokio_test::io::Builder::new()
.write(<span class="string">b&quot;POST / HTTP/1.1\r\ncontent-length: 4\r\n\r\n&quot;</span>)
.read(<span class="string">b&quot;HTTP/1.1 200 OK\r\ncontent-length: 0\r\n\r\n&quot;</span>)
.wait(std::time::Duration::from_secs(<span class="number">2</span>))
.build_with_handle();
<span class="kw">let </span>(<span class="kw-2">mut </span>tx, rx) = <span class="kw">crate</span>::client::dispatch::channel();
<span class="kw">let </span><span class="kw-2">mut </span>conn = Conn::&lt;<span class="kw">_</span>, bytes::Bytes, ClientTransaction&gt;::new(io);
conn.set_write_strategy_queue();
<span class="kw">let </span>dispatcher = Dispatcher::new(Client::new(rx), conn);
<span class="kw">let </span>_dispatcher = tokio::spawn(<span class="kw">async move </span>{ dispatcher.<span class="kw">await </span>});
<span class="kw">let </span>req = <span class="kw">crate</span>::Request::builder()
.method(<span class="string">&quot;POST&quot;</span>)
.body(<span class="kw">crate</span>::Body::from(<span class="string">&quot;reee&quot;</span>))
.unwrap();
<span class="kw">let </span>res = tx.try_send(req).unwrap().<span class="kw">await</span>.expect(<span class="string">&quot;response&quot;</span>);
drop(res);
<span class="macro">assert!</span>(!tx.is_ready());
}
<span class="attribute">#[tokio::test]
</span><span class="kw">async fn </span>body_empty_chunks_ignored() {
<span class="kw">let _ </span>= pretty_env_logger::try_init();
<span class="kw">let </span>io = tokio_test::io::Builder::new()
<span class="comment">// no reading or writing, just be blocked for the test...
</span>.wait(Duration::from_secs(<span class="number">5</span>))
.build();
<span class="kw">let </span>(<span class="kw-2">mut </span>tx, rx) = <span class="kw">crate</span>::client::dispatch::channel();
<span class="kw">let </span>conn = Conn::&lt;<span class="kw">_</span>, bytes::Bytes, ClientTransaction&gt;::new(io);
<span class="kw">let </span><span class="kw-2">mut </span>dispatcher = tokio_test::task::spawn(Dispatcher::new(Client::new(rx), conn));
<span class="comment">// First poll is needed to allow tx to send...
</span><span class="macro">assert!</span>(dispatcher.poll().is_pending());
<span class="kw">let </span>body = {
<span class="kw">let </span>(<span class="kw-2">mut </span>tx, body) = <span class="kw">crate</span>::Body::channel();
tx.try_send_data(<span class="string">&quot;&quot;</span>.into()).unwrap();
body
};
<span class="kw">let </span>_res_rx = tx.try_send(<span class="kw">crate</span>::Request::new(body)).unwrap();
<span class="comment">// Ensure conn.write_body wasn&#39;t called with the empty chunk.
// If it is, it will trigger an assertion.
</span><span class="macro">assert!</span>(dispatcher.poll().is_pending());
}
}
</code></pre></div>
</section></div></main><div id="rustdoc-vars" data-root-path="../../../../" data-current-crate="hyper" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html>