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<!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 to the Rust file `src/server/h2.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>h2.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../light.css" id="themeStyle"><script src="../../../storage.js"></script></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">&#9776;</div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../../settings.html"><img src="../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><pre class="rust ">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">collections</span>::<span class="ident">VecDeque</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">io</span>::{<span class="ident">Read</span>, <span class="ident">Write</span>};
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">net</span>::<span class="ident">SocketAddr</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">rc</span>::<span class="ident">Rc</span>;
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">time</span>::{<span class="ident">Duration</span>, <span class="ident">Instant</span>};
<span class="kw">use</span> <span class="ident">std</span>::{<span class="ident">cmp</span>, <span class="ident">io</span>, <span class="ident">mem</span>};
<span class="kw">use</span> <span class="ident">bytes</span>::{<span class="ident">Buf</span>, <span class="ident">Bytes</span>};
<span class="kw">use</span> <span class="ident">futures</span>::{<span class="ident">Async</span>, <span class="ident">Future</span>, <span class="ident">Poll</span>, <span class="ident">Stream</span>};
<span class="kw">use</span> <span class="ident">http2</span>::<span class="ident">server</span>::{<span class="self">self</span>, <span class="ident">Connection</span>, <span class="ident">Handshake</span>, <span class="ident">SendResponse</span>};
<span class="kw">use</span> <span class="ident">http2</span>::{<span class="ident">Reason</span>, <span class="ident">RecvStream</span>};
<span class="kw">use</span> <span class="ident">modhttp</span>::<span class="ident">request</span>::<span class="ident">Parts</span>;
<span class="kw">use</span> <span class="ident">tokio_io</span>::{<span class="ident">AsyncRead</span>, <span class="ident">AsyncWrite</span>};
<span class="kw">use</span> <span class="ident">tokio_timer</span>::<span class="ident">Delay</span>;
<span class="kw">use</span> <span class="ident">error</span>::{<span class="ident">Error</span>, <span class="ident">PayloadError</span>};
<span class="kw">use</span> <span class="ident">http</span>::{<span class="ident">StatusCode</span>, <span class="ident">Version</span>};
<span class="kw">use</span> <span class="ident">payload</span>::{<span class="ident">Payload</span>, <span class="ident">PayloadStatus</span>, <span class="ident">PayloadWriter</span>};
<span class="kw">use</span> <span class="ident">uri</span>::<span class="ident">Url</span>;
<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">error</span>::<span class="ident">ServerError</span>;
<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">h2writer</span>::<span class="ident">H2Writer</span>;
<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">input</span>::<span class="ident">PayloadType</span>;
<span class="kw">use</span> <span class="kw">super</span>::<span class="ident">settings</span>::<span class="ident">WorkerSettings</span>;
<span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">HttpHandler</span>, <span class="ident">HttpHandlerTask</span>, <span class="ident">Writer</span>};
<span class="macro">bitflags</span><span class="macro">!</span> {
<span class="kw">struct</span> <span class="ident">Flags</span>: <span class="ident">u8</span> {
<span class="kw">const</span> <span class="ident">DISCONNECTED</span> <span class="op">=</span> <span class="number">0b0000_0010</span>;
}
}
<span class="doccomment">/// HTTP/2 Transport</span>
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">struct</span> <span class="ident">Http2</span><span class="op">&lt;</span><span class="ident">T</span>, <span class="ident">H</span><span class="op">&gt;</span>
<span class="kw">where</span>
<span class="ident">T</span>: <span class="ident">AsyncRead</span> <span class="op">+</span> <span class="ident">AsyncWrite</span> <span class="op">+</span> <span class="lifetime">&#39;static</span>,
<span class="ident">H</span>: <span class="ident">HttpHandler</span> <span class="op">+</span> <span class="lifetime">&#39;static</span>,
{
<span class="ident">flags</span>: <span class="ident">Flags</span>,
<span class="ident">settings</span>: <span class="ident">Rc</span><span class="op">&lt;</span><span class="ident">WorkerSettings</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;&gt;</span>,
<span class="ident">addr</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">SocketAddr</span><span class="op">&gt;</span>,
<span class="ident">state</span>: <span class="ident">State</span><span class="op">&lt;</span><span class="ident">IoWrapper</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;&gt;</span>,
<span class="ident">tasks</span>: <span class="ident">VecDeque</span><span class="op">&lt;</span><span class="ident">Entry</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;&gt;</span>,
<span class="ident">keepalive_timer</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Delay</span><span class="op">&gt;</span>,
}
<span class="kw">enum</span> <span class="ident">State</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">AsyncRead</span> <span class="op">+</span> <span class="ident">AsyncWrite</span><span class="op">&gt;</span> {
<span class="ident">Handshake</span>(<span class="ident">Handshake</span><span class="op">&lt;</span><span class="ident">T</span>, <span class="ident">Bytes</span><span class="op">&gt;</span>),
<span class="ident">Connection</span>(<span class="ident">Connection</span><span class="op">&lt;</span><span class="ident">T</span>, <span class="ident">Bytes</span><span class="op">&gt;</span>),
<span class="ident">Empty</span>,
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>, <span class="ident">H</span><span class="op">&gt;</span> <span class="ident">Http2</span><span class="op">&lt;</span><span class="ident">T</span>, <span class="ident">H</span><span class="op">&gt;</span>
<span class="kw">where</span>
<span class="ident">T</span>: <span class="ident">AsyncRead</span> <span class="op">+</span> <span class="ident">AsyncWrite</span> <span class="op">+</span> <span class="lifetime">&#39;static</span>,
<span class="ident">H</span>: <span class="ident">HttpHandler</span> <span class="op">+</span> <span class="lifetime">&#39;static</span>,
{
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">new</span>(
<span class="ident">settings</span>: <span class="ident">Rc</span><span class="op">&lt;</span><span class="ident">WorkerSettings</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;&gt;</span>, <span class="ident">io</span>: <span class="ident">T</span>, <span class="ident">addr</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">SocketAddr</span><span class="op">&gt;</span>, <span class="ident">buf</span>: <span class="ident">Bytes</span>,
) <span class="op">-&gt;</span> <span class="self">Self</span> {
<span class="ident">Http2</span> {
<span class="ident">flags</span>: <span class="ident">Flags</span>::<span class="ident">empty</span>(),
<span class="ident">tasks</span>: <span class="ident">VecDeque</span>::<span class="ident">new</span>(),
<span class="ident">state</span>: <span class="ident">State</span>::<span class="ident">Handshake</span>(<span class="ident">server</span>::<span class="ident">handshake</span>(<span class="ident">IoWrapper</span> {
<span class="ident">unread</span>: <span class="kw">if</span> <span class="ident">buf</span>.<span class="ident">is_empty</span>() { <span class="prelude-val">None</span> } <span class="kw">else</span> { <span class="prelude-val">Some</span>(<span class="ident">buf</span>) },
<span class="ident">inner</span>: <span class="ident">io</span>,
})),
<span class="ident">keepalive_timer</span>: <span class="prelude-val">None</span>,
<span class="ident">addr</span>,
<span class="ident">settings</span>,
}
}
<span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn</span> <span class="ident">shutdown</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="self">self</span>.<span class="ident">state</span> <span class="op">=</span> <span class="ident">State</span>::<span class="ident">Empty</span>;
<span class="self">self</span>.<span class="ident">tasks</span>.<span class="ident">clear</span>();
<span class="self">self</span>.<span class="ident">keepalive_timer</span>.<span class="ident">take</span>();
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">settings</span>(<span class="kw-2">&amp;</span><span class="self">self</span>) <span class="op">-&gt;</span> <span class="kw-2">&amp;</span><span class="ident">WorkerSettings</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;</span> {
<span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">as_ref</span>()
}
<span class="kw">pub</span> <span class="kw">fn</span> <span class="ident">poll</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">Poll</span><span class="op">&lt;</span>(), ()<span class="op">&gt;</span> {
<span class="comment">// server</span>
<span class="kw">if</span> <span class="kw">let</span> <span class="ident">State</span>::<span class="ident">Connection</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">conn</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">state</span> {
<span class="comment">// keep-alive timer</span>
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">timeout</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">keepalive_timer</span> {
<span class="kw">match</span> <span class="ident">timeout</span>.<span class="ident">poll</span>() {
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="kw">_</span>)) <span class="op">=&gt;</span> {
<span class="macro">trace</span><span class="macro">!</span>(<span class="string">&quot;Keep-alive timeout, close connection&quot;</span>);
<span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(()));
}
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=&gt;</span> (),
<span class="prelude-val">Err</span>(<span class="kw">_</span>) <span class="op">=&gt;</span> <span class="macro">unreachable</span><span class="macro">!</span>(),
}
}
<span class="kw">loop</span> {
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">not_ready</span> <span class="op">=</span> <span class="bool-val">true</span>;
<span class="comment">// check in-flight connections</span>
<span class="kw">for</span> <span class="ident">item</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">tasks</span> {
<span class="comment">// read payload</span>
<span class="ident">item</span>.<span class="ident">poll_payload</span>();
<span class="kw">if</span> <span class="op">!</span><span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">EOF</span>) {
<span class="kw">let</span> <span class="ident">retry</span> <span class="op">=</span> <span class="ident">item</span>.<span class="ident">payload</span>.<span class="ident">need_read</span>() <span class="op">==</span> <span class="ident">PayloadStatus</span>::<span class="ident">Read</span>;
<span class="kw">loop</span> {
<span class="kw">match</span> <span class="ident">item</span>.<span class="ident">task</span>.<span class="ident">poll_io</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">item</span>.<span class="ident">stream</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="ident">ready</span>)) <span class="op">=&gt;</span> {
<span class="kw">if</span> <span class="ident">ready</span> {
<span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(
<span class="ident">EntryFlags</span>::<span class="ident">EOF</span> <span class="op">|</span> <span class="ident">EntryFlags</span>::<span class="ident">FINISHED</span>,
);
} <span class="kw">else</span> {
<span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(<span class="ident">EntryFlags</span>::<span class="ident">EOF</span>);
}
<span class="ident">not_ready</span> <span class="op">=</span> <span class="bool-val">false</span>;
}
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=&gt;</span> {
<span class="kw">if</span> <span class="ident">item</span>.<span class="ident">payload</span>.<span class="ident">need_read</span>() <span class="op">==</span> <span class="ident">PayloadStatus</span>::<span class="ident">Read</span>
<span class="op">&amp;&amp;</span> <span class="op">!</span><span class="ident">retry</span>
{
<span class="kw">continue</span>;
}
}
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=&gt;</span> {
<span class="macro">error</span><span class="macro">!</span>(<span class="string">&quot;Unhandled error: {}&quot;</span>, <span class="ident">err</span>);
<span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(
<span class="ident">EntryFlags</span>::<span class="ident">EOF</span>
<span class="op">|</span> <span class="ident">EntryFlags</span>::<span class="ident">ERROR</span>
<span class="op">|</span> <span class="ident">EntryFlags</span>::<span class="ident">WRITE_DONE</span>,
);
<span class="ident">item</span>.<span class="ident">stream</span>.<span class="ident">reset</span>(<span class="ident">Reason</span>::<span class="ident">INTERNAL_ERROR</span>);
}
}
<span class="kw">break</span>;
}
} <span class="kw">else</span> <span class="kw">if</span> <span class="op">!</span><span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">FINISHED</span>) {
<span class="kw">match</span> <span class="ident">item</span>.<span class="ident">task</span>.<span class="ident">poll_completed</span>() {
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=&gt;</span> (),
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="kw">_</span>)) <span class="op">=&gt;</span> {
<span class="ident">not_ready</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(<span class="ident">EntryFlags</span>::<span class="ident">FINISHED</span>);
}
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=&gt;</span> {
<span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(
<span class="ident">EntryFlags</span>::<span class="ident">ERROR</span>
<span class="op">|</span> <span class="ident">EntryFlags</span>::<span class="ident">WRITE_DONE</span>
<span class="op">|</span> <span class="ident">EntryFlags</span>::<span class="ident">FINISHED</span>,
);
<span class="macro">error</span><span class="macro">!</span>(<span class="string">&quot;Unhandled error: {}&quot;</span>, <span class="ident">err</span>);
}
}
}
<span class="kw">if</span> <span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">FINISHED</span>)
<span class="op">&amp;&amp;</span> <span class="op">!</span><span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">WRITE_DONE</span>)
{
<span class="kw">match</span> <span class="ident">item</span>.<span class="ident">stream</span>.<span class="ident">poll_completed</span>(<span class="bool-val">false</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=&gt;</span> (),
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="kw">_</span>)) <span class="op">=&gt;</span> {
<span class="ident">not_ready</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(<span class="ident">EntryFlags</span>::<span class="ident">WRITE_DONE</span>);
}
<span class="prelude-val">Err</span>(<span class="ident">_err</span>) <span class="op">=&gt;</span> {
<span class="ident">item</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(<span class="ident">EntryFlags</span>::<span class="ident">ERROR</span>);
}
}
}
}
<span class="comment">// cleanup finished tasks</span>
<span class="kw">while</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">tasks</span>.<span class="ident">is_empty</span>() {
<span class="kw">if</span> <span class="self">self</span>.<span class="ident">tasks</span>[<span class="number">0</span>].<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">EOF</span>)
<span class="op">&amp;&amp;</span> <span class="self">self</span>.<span class="ident">tasks</span>[<span class="number">0</span>].<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">WRITE_DONE</span>)
<span class="op">||</span> <span class="self">self</span>.<span class="ident">tasks</span>[<span class="number">0</span>].<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">ERROR</span>)
{
<span class="self">self</span>.<span class="ident">tasks</span>.<span class="ident">pop_front</span>();
} <span class="kw">else</span> {
<span class="kw">break</span>;
}
}
<span class="comment">// get request</span>
<span class="kw">if</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">Flags</span>::<span class="ident">DISCONNECTED</span>) {
<span class="kw">match</span> <span class="ident">conn</span>.<span class="ident">poll</span>() {
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">None</span>)) <span class="op">=&gt;</span> {
<span class="ident">not_ready</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(<span class="ident">Flags</span>::<span class="ident">DISCONNECTED</span>);
<span class="kw">for</span> <span class="ident">entry</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">tasks</span> {
<span class="ident">entry</span>.<span class="ident">task</span>.<span class="ident">disconnected</span>()
}
}
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">Some</span>((<span class="ident">req</span>, <span class="ident">resp</span>)))) <span class="op">=&gt;</span> {
<span class="ident">not_ready</span> <span class="op">=</span> <span class="bool-val">false</span>;
<span class="kw">let</span> (<span class="ident">parts</span>, <span class="ident">body</span>) <span class="op">=</span> <span class="ident">req</span>.<span class="ident">into_parts</span>();
<span class="comment">// stop keepalive timer</span>
<span class="self">self</span>.<span class="ident">keepalive_timer</span>.<span class="ident">take</span>();
<span class="self">self</span>.<span class="ident">tasks</span>.<span class="ident">push_back</span>(<span class="ident">Entry</span>::<span class="ident">new</span>(
<span class="ident">parts</span>,
<span class="ident">body</span>,
<span class="ident">resp</span>,
<span class="self">self</span>.<span class="ident">addr</span>,
<span class="kw-2">&amp;</span><span class="self">self</span>.<span class="ident">settings</span>,
));
}
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=&gt;</span> {
<span class="comment">// start keep-alive timer</span>
<span class="kw">if</span> <span class="self">self</span>.<span class="ident">tasks</span>.<span class="ident">is_empty</span>() {
<span class="kw">if</span> <span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">keep_alive_enabled</span>() {
<span class="kw">let</span> <span class="ident">keep_alive</span> <span class="op">=</span> <span class="self">self</span>.<span class="ident">settings</span>.<span class="ident">keep_alive</span>();
<span class="kw">if</span> <span class="ident">keep_alive</span> <span class="op">&gt;</span> <span class="number">0</span> <span class="op">&amp;&amp;</span> <span class="self">self</span>.<span class="ident">keepalive_timer</span>.<span class="ident">is_none</span>() {
<span class="macro">trace</span><span class="macro">!</span>(<span class="string">&quot;Start keep-alive timer&quot;</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">timeout</span> <span class="op">=</span> <span class="ident">Delay</span>::<span class="ident">new</span>(
<span class="ident">Instant</span>::<span class="ident">now</span>()
<span class="op">+</span> <span class="ident">Duration</span>::<span class="ident">new</span>(<span class="ident">keep_alive</span>, <span class="number">0</span>),
);
<span class="comment">// register timeout</span>
<span class="kw">let</span> <span class="kw">_</span> <span class="op">=</span> <span class="ident">timeout</span>.<span class="ident">poll</span>();
<span class="self">self</span>.<span class="ident">keepalive_timer</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">timeout</span>);
}
} <span class="kw">else</span> {
<span class="comment">// keep-alive disable, drop connection</span>
<span class="kw">return</span> <span class="ident">conn</span>.<span class="ident">poll_close</span>().<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">e</span><span class="op">|</span> {
<span class="macro">error</span><span class="macro">!</span>(<span class="string">&quot;Error during connection close: {}&quot;</span>, <span class="ident">e</span>)
});
}
} <span class="kw">else</span> {
<span class="comment">// keep-alive unset, rely on operating system</span>
<span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>);
}
}
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=&gt;</span> {
<span class="macro">trace</span><span class="macro">!</span>(<span class="string">&quot;Connection error: {}&quot;</span>, <span class="ident">err</span>);
<span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(<span class="ident">Flags</span>::<span class="ident">DISCONNECTED</span>);
<span class="kw">for</span> <span class="ident">entry</span> <span class="kw">in</span> <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">tasks</span> {
<span class="ident">entry</span>.<span class="ident">task</span>.<span class="ident">disconnected</span>()
}
<span class="self">self</span>.<span class="ident">keepalive_timer</span>.<span class="ident">take</span>();
}
}
}
<span class="kw">if</span> <span class="ident">not_ready</span> {
<span class="kw">if</span> <span class="self">self</span>.<span class="ident">tasks</span>.<span class="ident">is_empty</span>() <span class="op">&amp;&amp;</span> <span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">Flags</span>::<span class="ident">DISCONNECTED</span>)
{
<span class="kw">return</span> <span class="ident">conn</span>
.<span class="ident">poll_close</span>()
.<span class="ident">map_err</span>(<span class="op">|</span><span class="ident">e</span><span class="op">|</span> <span class="macro">error</span><span class="macro">!</span>(<span class="string">&quot;Error during connection close: {}&quot;</span>, <span class="ident">e</span>));
} <span class="kw">else</span> {
<span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>);
}
}
}
}
<span class="comment">// handshake</span>
<span class="self">self</span>.<span class="ident">state</span> <span class="op">=</span> <span class="kw">if</span> <span class="kw">let</span> <span class="ident">State</span>::<span class="ident">Handshake</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">handshake</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">state</span> {
<span class="kw">match</span> <span class="ident">handshake</span>.<span class="ident">poll</span>() {
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="ident">conn</span>)) <span class="op">=&gt;</span> <span class="ident">State</span>::<span class="ident">Connection</span>(<span class="ident">conn</span>),
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=&gt;</span> <span class="kw">return</span> <span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>),
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=&gt;</span> {
<span class="macro">trace</span><span class="macro">!</span>(<span class="string">&quot;Error handling connection: {}&quot;</span>, <span class="ident">err</span>);
<span class="kw">return</span> <span class="prelude-val">Err</span>(());
}
}
} <span class="kw">else</span> {
<span class="ident">mem</span>::<span class="ident">replace</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>.<span class="ident">state</span>, <span class="ident">State</span>::<span class="ident">Empty</span>)
};
<span class="self">self</span>.<span class="ident">poll</span>()
}
}
<span class="macro">bitflags</span><span class="macro">!</span> {
<span class="kw">struct</span> <span class="ident">EntryFlags</span>: <span class="ident">u8</span> {
<span class="kw">const</span> <span class="ident">EOF</span> <span class="op">=</span> <span class="number">0b0000_0001</span>;
<span class="kw">const</span> <span class="ident">REOF</span> <span class="op">=</span> <span class="number">0b0000_0010</span>;
<span class="kw">const</span> <span class="ident">ERROR</span> <span class="op">=</span> <span class="number">0b0000_0100</span>;
<span class="kw">const</span> <span class="ident">FINISHED</span> <span class="op">=</span> <span class="number">0b0000_1000</span>;
<span class="kw">const</span> <span class="ident">WRITE_DONE</span> <span class="op">=</span> <span class="number">0b0001_0000</span>;
}
}
<span class="kw">enum</span> <span class="ident">EntryPipe</span><span class="op">&lt;</span><span class="ident">H</span>: <span class="ident">HttpHandler</span><span class="op">&gt;</span> {
<span class="ident">Task</span>(<span class="ident">H</span>::<span class="ident">Task</span>),
<span class="ident">Error</span>(<span class="ident">Box</span><span class="op">&lt;</span><span class="ident">HttpHandlerTask</span><span class="op">&gt;</span>),
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">H</span>: <span class="ident">HttpHandler</span><span class="op">&gt;</span> <span class="ident">EntryPipe</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;</span> {
<span class="kw">fn</span> <span class="ident">disconnected</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
<span class="ident">EntryPipe</span>::<span class="ident">Task</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">task</span>) <span class="op">=&gt;</span> <span class="ident">task</span>.<span class="ident">disconnected</span>(),
<span class="ident">EntryPipe</span>::<span class="ident">Error</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">task</span>) <span class="op">=&gt;</span> <span class="ident">task</span>.<span class="ident">disconnected</span>(),
}
}
<span class="kw">fn</span> <span class="ident">poll_io</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">io</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">Writer</span>) <span class="op">-&gt;</span> <span class="ident">Poll</span><span class="op">&lt;</span><span class="ident">bool</span>, <span class="ident">Error</span><span class="op">&gt;</span> {
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
<span class="ident">EntryPipe</span>::<span class="ident">Task</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">task</span>) <span class="op">=&gt;</span> <span class="ident">task</span>.<span class="ident">poll_io</span>(<span class="ident">io</span>),
<span class="ident">EntryPipe</span>::<span class="ident">Error</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">task</span>) <span class="op">=&gt;</span> <span class="ident">task</span>.<span class="ident">poll_io</span>(<span class="ident">io</span>),
}
}
<span class="kw">fn</span> <span class="ident">poll_completed</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">Poll</span><span class="op">&lt;</span>(), <span class="ident">Error</span><span class="op">&gt;</span> {
<span class="kw">match</span> <span class="kw-2">*</span><span class="self">self</span> {
<span class="ident">EntryPipe</span>::<span class="ident">Task</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">task</span>) <span class="op">=&gt;</span> <span class="ident">task</span>.<span class="ident">poll_completed</span>(),
<span class="ident">EntryPipe</span>::<span class="ident">Error</span>(<span class="kw-2">ref</span> <span class="kw-2">mut</span> <span class="ident">task</span>) <span class="op">=&gt;</span> <span class="ident">task</span>.<span class="ident">poll_completed</span>(),
}
}
}
<span class="kw">struct</span> <span class="ident">Entry</span><span class="op">&lt;</span><span class="ident">H</span>: <span class="ident">HttpHandler</span> <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;</span> {
<span class="ident">task</span>: <span class="ident">EntryPipe</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;</span>,
<span class="ident">payload</span>: <span class="ident">PayloadType</span>,
<span class="ident">recv</span>: <span class="ident">RecvStream</span>,
<span class="ident">stream</span>: <span class="ident">H2Writer</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;</span>,
<span class="ident">flags</span>: <span class="ident">EntryFlags</span>,
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">H</span>: <span class="ident">HttpHandler</span> <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;</span> <span class="ident">Entry</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;</span> {
<span class="kw">fn</span> <span class="ident">new</span>(
<span class="ident">parts</span>: <span class="ident">Parts</span>, <span class="ident">recv</span>: <span class="ident">RecvStream</span>, <span class="ident">resp</span>: <span class="ident">SendResponse</span><span class="op">&lt;</span><span class="ident">Bytes</span><span class="op">&gt;</span>,
<span class="ident">addr</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">SocketAddr</span><span class="op">&gt;</span>, <span class="ident">settings</span>: <span class="kw-2">&amp;</span><span class="ident">Rc</span><span class="op">&lt;</span><span class="ident">WorkerSettings</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;&gt;</span>,
) <span class="op">-&gt;</span> <span class="ident">Entry</span><span class="op">&lt;</span><span class="ident">H</span><span class="op">&gt;</span>
<span class="kw">where</span>
<span class="ident">H</span>: <span class="ident">HttpHandler</span> <span class="op">+</span> <span class="lifetime">&#39;static</span>,
{
<span class="comment">// Payload and Content-Encoding</span>
<span class="kw">let</span> (<span class="ident">psender</span>, <span class="ident">payload</span>) <span class="op">=</span> <span class="ident">Payload</span>::<span class="ident">new</span>(<span class="bool-val">false</span>);
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">msg</span> <span class="op">=</span> <span class="ident">settings</span>.<span class="ident">get_request</span>();
{
<span class="kw">let</span> <span class="ident">inner</span> <span class="op">=</span> <span class="ident">msg</span>.<span class="ident">inner_mut</span>();
<span class="ident">inner</span>.<span class="ident">url</span> <span class="op">=</span> <span class="ident">Url</span>::<span class="ident">new</span>(<span class="ident">parts</span>.<span class="ident">uri</span>);
<span class="ident">inner</span>.<span class="ident">method</span> <span class="op">=</span> <span class="ident">parts</span>.<span class="ident">method</span>;
<span class="ident">inner</span>.<span class="ident">version</span> <span class="op">=</span> <span class="ident">parts</span>.<span class="ident">version</span>;
<span class="ident">inner</span>.<span class="ident">headers</span> <span class="op">=</span> <span class="ident">parts</span>.<span class="ident">headers</span>;
<span class="kw-2">*</span><span class="ident">inner</span>.<span class="ident">payload</span>.<span class="ident">borrow_mut</span>() <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">payload</span>);
<span class="ident">inner</span>.<span class="ident">addr</span> <span class="op">=</span> <span class="ident">addr</span>;
}
<span class="comment">// Payload sender</span>
<span class="kw">let</span> <span class="ident">psender</span> <span class="op">=</span> <span class="ident">PayloadType</span>::<span class="ident">new</span>(<span class="ident">msg</span>.<span class="ident">headers</span>(), <span class="ident">psender</span>);
<span class="comment">// start request processing</span>
<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">task</span> <span class="op">=</span> <span class="prelude-val">None</span>;
<span class="kw">for</span> <span class="ident">h</span> <span class="kw">in</span> <span class="ident">settings</span>.<span class="ident">handlers</span>().<span class="ident">iter_mut</span>() {
<span class="ident">msg</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">h</span>.<span class="ident">handle</span>(<span class="ident">msg</span>) {
<span class="prelude-val">Ok</span>(<span class="ident">t</span>) <span class="op">=&gt;</span> {
<span class="ident">task</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">t</span>);
<span class="kw">break</span>;
}
<span class="prelude-val">Err</span>(<span class="ident">msg</span>) <span class="op">=&gt;</span> <span class="ident">msg</span>,
}
}
<span class="ident">Entry</span> {
<span class="ident">task</span>: <span class="ident">task</span>.<span class="ident">map</span>(<span class="ident">EntryPipe</span>::<span class="ident">Task</span>).<span class="ident">unwrap_or_else</span>(<span class="op">||</span> {
<span class="ident">EntryPipe</span>::<span class="ident">Error</span>(<span class="ident">ServerError</span>::<span class="ident">err</span>(
<span class="ident">Version</span>::<span class="ident">HTTP_2</span>,
<span class="ident">StatusCode</span>::<span class="ident">NOT_FOUND</span>,
))
}),
<span class="ident">payload</span>: <span class="ident">psender</span>,
<span class="ident">stream</span>: <span class="ident">H2Writer</span>::<span class="ident">new</span>(<span class="ident">resp</span>, <span class="ident">Rc</span>::<span class="ident">clone</span>(<span class="ident">settings</span>)),
<span class="ident">flags</span>: <span class="ident">EntryFlags</span>::<span class="ident">empty</span>(),
<span class="ident">recv</span>,
}
}
<span class="kw">fn</span> <span class="ident">poll_payload</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) {
<span class="kw">while</span> <span class="op">!</span><span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">contains</span>(<span class="ident">EntryFlags</span>::<span class="ident">REOF</span>)
<span class="op">&amp;&amp;</span> <span class="self">self</span>.<span class="ident">payload</span>.<span class="ident">need_read</span>() <span class="op">==</span> <span class="ident">PayloadStatus</span>::<span class="ident">Read</span>
{
<span class="kw">match</span> <span class="self">self</span>.<span class="ident">recv</span>.<span class="ident">poll</span>() {
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">Some</span>(<span class="ident">chunk</span>))) <span class="op">=&gt;</span> {
<span class="kw">let</span> <span class="ident">l</span> <span class="op">=</span> <span class="ident">chunk</span>.<span class="ident">len</span>();
<span class="self">self</span>.<span class="ident">payload</span>.<span class="ident">feed_data</span>(<span class="ident">chunk</span>);
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">recv</span>.<span class="ident">release_capacity</span>().<span class="ident">release_capacity</span>(<span class="ident">l</span>) {
<span class="self">self</span>.<span class="ident">payload</span>.<span class="ident">set_error</span>(<span class="ident">PayloadError</span>::<span class="ident">Http2</span>(<span class="ident">err</span>));
<span class="kw">break</span>;
}
}
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">Ready</span>(<span class="prelude-val">None</span>)) <span class="op">=&gt;</span> {
<span class="self">self</span>.<span class="ident">flags</span>.<span class="ident">insert</span>(<span class="ident">EntryFlags</span>::<span class="ident">REOF</span>);
<span class="self">self</span>.<span class="ident">payload</span>.<span class="ident">feed_eof</span>();
}
<span class="prelude-val">Ok</span>(<span class="ident">Async</span>::<span class="ident">NotReady</span>) <span class="op">=&gt;</span> <span class="kw">break</span>,
<span class="prelude-val">Err</span>(<span class="ident">err</span>) <span class="op">=&gt;</span> {
<span class="self">self</span>.<span class="ident">payload</span>.<span class="ident">set_error</span>(<span class="ident">PayloadError</span>::<span class="ident">Http2</span>(<span class="ident">err</span>));
<span class="kw">break</span>;
}
}
}
}
}
<span class="kw">struct</span> <span class="ident">IoWrapper</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
<span class="ident">unread</span>: <span class="prelude-ty">Option</span><span class="op">&lt;</span><span class="ident">Bytes</span><span class="op">&gt;</span>,
<span class="ident">inner</span>: <span class="ident">T</span>,
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">Read</span><span class="op">&gt;</span> <span class="ident">Read</span> <span class="kw">for</span> <span class="ident">IoWrapper</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
<span class="kw">fn</span> <span class="ident">read</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">usize</span><span class="op">&gt;</span> {
<span class="kw">if</span> <span class="kw">let</span> <span class="prelude-val">Some</span>(<span class="kw-2">mut</span> <span class="ident">bytes</span>) <span class="op">=</span> <span class="self">self</span>.<span class="ident">unread</span>.<span class="ident">take</span>() {
<span class="kw">let</span> <span class="ident">size</span> <span class="op">=</span> <span class="ident">cmp</span>::<span class="ident">min</span>(<span class="ident">buf</span>.<span class="ident">len</span>(), <span class="ident">bytes</span>.<span class="ident">len</span>());
<span class="ident">buf</span>[..<span class="ident">size</span>].<span class="ident">copy_from_slice</span>(<span class="kw-2">&amp;</span><span class="ident">bytes</span>[..<span class="ident">size</span>]);
<span class="kw">if</span> <span class="ident">bytes</span>.<span class="ident">len</span>() <span class="op">&gt;</span> <span class="ident">size</span> {
<span class="ident">bytes</span>.<span class="ident">split_to</span>(<span class="ident">size</span>);
<span class="self">self</span>.<span class="ident">unread</span> <span class="op">=</span> <span class="prelude-val">Some</span>(<span class="ident">bytes</span>);
}
<span class="prelude-val">Ok</span>(<span class="ident">size</span>)
} <span class="kw">else</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">read</span>(<span class="ident">buf</span>)
}
}
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">Write</span><span class="op">&gt;</span> <span class="ident">Write</span> <span class="kw">for</span> <span class="ident">IoWrapper</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
<span class="kw">fn</span> <span class="ident">write</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&amp;</span>[<span class="ident">u8</span>]) <span class="op">-&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">usize</span><span class="op">&gt;</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">write</span>(<span class="ident">buf</span>)
}
<span class="kw">fn</span> <span class="ident">flush</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">io</span>::<span class="prelude-ty">Result</span><span class="op">&lt;</span>()<span class="op">&gt;</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">flush</span>()
}
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">AsyncRead</span> <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;</span> <span class="ident">AsyncRead</span> <span class="kw">for</span> <span class="ident">IoWrapper</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
<span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">prepare_uninitialized_buffer</span>(<span class="kw-2">&amp;</span><span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> [<span class="ident">u8</span>]) <span class="op">-&gt;</span> <span class="ident">bool</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">prepare_uninitialized_buffer</span>(<span class="ident">buf</span>)
}
}
<span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">AsyncWrite</span> <span class="op">+</span> <span class="lifetime">&#39;static</span><span class="op">&gt;</span> <span class="ident">AsyncWrite</span> <span class="kw">for</span> <span class="ident">IoWrapper</span><span class="op">&lt;</span><span class="ident">T</span><span class="op">&gt;</span> {
<span class="kw">fn</span> <span class="ident">shutdown</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>) <span class="op">-&gt;</span> <span class="ident">Poll</span><span class="op">&lt;</span>(), <span class="ident">io</span>::<span class="ident">Error</span><span class="op">&gt;</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">shutdown</span>()
}
<span class="kw">fn</span> <span class="ident">write_buf</span><span class="op">&lt;</span><span class="ident">B</span>: <span class="ident">Buf</span><span class="op">&gt;</span>(<span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="self">self</span>, <span class="ident">buf</span>: <span class="kw-2">&amp;</span><span class="kw-2">mut</span> <span class="ident">B</span>) <span class="op">-&gt;</span> <span class="ident">Poll</span><span class="op">&lt;</span><span class="ident">usize</span>, <span class="ident">io</span>::<span class="ident">Error</span><span class="op">&gt;</span> {
<span class="self">self</span>.<span class="ident">inner</span>.<span class="ident">write_buf</span>(<span class="ident">buf</span>)
}
}
</pre>
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