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<span><span>(<span><span>(<span><span><span>(<span class="type-var">'a</span>, <a href="../../../ocaml/Stdlib/Format/index.html#type-formatter">Stdlib.Format.formatter</a>, unit, unit)</span> <a href="../../../ocaml/Stdlib/index.html#type-format4">format4</a></span> <span class="arrow">&#45;&gt;</span></span> <span class="type-var">'a</span>)</span> <span class="arrow">&#45;&gt;</span></span> unit)</span> <span class="arrow">&#45;&gt;</span></span>
unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-error"><a href="#val-error" class="anchor"></a><code><span><span class="keyword">val</span> error :
<span><span>(<span><span>(<span><span><span>(<span class="type-var">'a</span>, <a href="../../../ocaml/Stdlib/Format/index.html#type-formatter">Stdlib.Format.formatter</a>, unit, unit)</span> <a href="../../../ocaml/Stdlib/index.html#type-format4">format4</a></span> <span class="arrow">&#45;&gt;</span></span> <span class="type-var">'a</span>)</span> <span class="arrow">&#45;&gt;</span></span> unit)</span> <span class="arrow">&#45;&gt;</span></span>
unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-setup"><a href="#val-setup" class="anchor"></a><code><span><span class="keyword">val</span> setup : <span><span class="label">debug</span>:bool <span class="arrow">&#45;&gt;</span></span> <span>unit <span class="arrow">&#45;&gt;</span></span> unit</span></code></div><div class="spec-doc"><p>Setup and enable logging. This should only ever be used in executables, not libraries.</p><ul class="at-tags"><li class="parameter"><span class="at-tag">parameter</span> <span class="value">debug</span> <p>if true, set logging to debug (otherwise info)</p></li></ul></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-dummy"><a href="#val-dummy" class="anchor"></a><code><span><span class="keyword">val</span> dummy : bool</span></code></div></div></div></body></html>
unit</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-setup"><a href="#val-setup" class="anchor"></a><code><span><span class="keyword">val</span> setup : <span><span class="label">debug</span>:bool <span class="arrow">&#45;&gt;</span></span> <span>unit <span class="arrow">&#45;&gt;</span></span> unit</span></code></div><div class="spec-doc"><p>Setup and enable logging. This should only ever be used in executables, not libraries.</p><ul class="at-tags"><li class="parameter"><span class="at-tag">parameter</span> <span class="value">debug</span> <p>if true, set logging to debug (otherwise info)</p></li></ul></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-dummy"><a href="#val-dummy" class="anchor"></a><code><span><span class="keyword">val</span> dummy : bool</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-fully_disable"><a href="#val-fully_disable" class="anchor"></a><code><span><span class="keyword">val</span> fully_disable : <span>unit <span class="arrow">&#45;&gt;</span></span> unit</span></code></div><div class="spec-doc"><p>Totally silence logs for tiny_httpd. With <code>Logs</code> installed this means setting the level of the tiny_httpd source to <code>None</code>.</p><ul class="at-tags"><li class="since"><span class="at-tag">since</span> NEXT_RELEASE</li></ul></div></div></div></body></html>

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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Server (tiny_httpd.Tiny_httpd_core.Server)</title><meta charset="utf-8"/><link rel="stylesheet" href="../../../_odoc-theme/odoc.css"/><meta name="generator" content="odoc 2.4.3"/><meta name="viewport" content="width=device-width,initial-scale=1.0"/><script src="../../../highlight.pack.js"></script><script>hljs.initHighlightingOnLoad();</script></head><body class="odoc"><nav class="odoc-nav"><a href="../index.html">Up</a> <a href="../../index.html">tiny_httpd</a> &#x00BB; <a href="../index.html">Tiny_httpd_core</a> &#x00BB; Server</nav><header class="odoc-preamble"><h1>Module <code><span>Tiny_httpd_core.Server</span></code></h1><p>HTTP server.</p><p>This module implements a very simple, basic HTTP/1.1 server using blocking IOs and threads.</p><p>It is possible to use a thread pool, see <code>create</code>'s argument <code>new_thread</code>.</p><ul class="at-tags"><li class="since"><span class="at-tag">since</span> 0.13</li></ul></header><nav class="odoc-toc"><ul><li><a href="#middlewares">Middlewares</a></li><li><a href="#main-server-type">Main Server type</a></li><li><a href="#request-handlers">Request handlers</a></li><li><a href="#server-sent-events">Server-sent events</a></li><li><a href="#upgrade-handlers">Upgrade handlers</a></li><li><a href="#run-the-server">Run the server</a></li></ul></nav><div class="odoc-content"><div class="odoc-spec"><div class="spec exception anchored" id="exception-Bad_req"><a href="#exception-Bad_req" class="anchor"></a><code><span><span class="keyword">exception</span> </span><span><span class="exception">Bad_req</span> <span class="keyword">of</span> int * string</span></code></div><div class="spec-doc"><p>Exception raised to exit request handlers with a code+error message</p></div></div><h3 id="middlewares"><a href="#middlewares" class="anchor"></a>Middlewares</h3><p>A middleware can be inserted in a handler to modify or observe its behavior.</p><ul class="at-tags"><li class="since"><span class="at-tag">since</span> 0.11</li></ul><div class="odoc-spec"><div class="spec module anchored" id="module-Middleware"><a href="#module-Middleware" class="anchor"></a><code><span><span class="keyword">module</span> <a href="Middleware/index.html">Middleware</a></span><span> : <span class="keyword">sig</span> ... <span class="keyword">end</span></span></code></div></div><div class="odoc-spec"><div class="spec module anchored" id="module-Head_middleware"><a href="#module-Head_middleware" class="anchor"></a><code><span><span class="keyword">module</span> <a href="Head_middleware/index.html">Head_middleware</a></span><span> : <span class="keyword">sig</span> ... <span class="keyword">end</span></span></code></div><div class="spec-doc"><p>A middleware that only considers the request's head+headers.</p></div></div><h3 id="main-server-type"><a href="#main-server-type" class="anchor"></a>Main Server type</h3><div class="odoc-spec"><div class="spec type anchored" id="type-t"><a href="#type-t" class="anchor"></a><code><span><span class="keyword">type</span> t</span></code></div><div class="spec-doc"><p>A HTTP server. See <code>create</code> for more details.</p></div></div><div class="odoc-spec"><div class="spec module-type anchored" id="module-type-IO_BACKEND"><a href="#module-type-IO_BACKEND" class="anchor"></a><code><span><span class="keyword">module</span> <span class="keyword">type</span> <a href="module-type-IO_BACKEND/index.html">IO_BACKEND</a></span><span> = <span class="keyword">sig</span> ... <span class="keyword">end</span></span></code></div><div class="spec-doc"><p>A backend that provides IO operations, network operations, etc.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-create_from"><a href="#val-create_from" class="anchor"></a><code><span><span class="keyword">val</span> create_from :
<span><span class="optlabel">?enable_logging</span>:bool <span class="arrow">&#45;&gt;</span></span>
<span><span class="optlabel">?buf_size</span>:int <span class="arrow">&#45;&gt;</span></span>
<span><span class="optlabel">?middlewares</span>:<span><span>(<span>[ `Encoding <span><span>| `Stage</span> of int</span> ]</span> * <a href="Middleware/index.html#type-t">Middleware.t</a>)</span> list</span> <span class="arrow">&#45;&gt;</span></span>
<span><span class="label">backend</span>:<span>(<span class="keyword">module</span> <a href="module-type-IO_BACKEND/index.html">IO_BACKEND</a>)</span> <span class="arrow">&#45;&gt;</span></span>
<span>unit <span class="arrow">&#45;&gt;</span></span>
<a href="#type-t">t</a></span></code></div><div class="spec-doc"><p>Create a new webserver using provided backend.</p><p>The server will not do anything until <a href="#val-run"><code>run</code></a> is called on it. Before starting the server, one can use <code>add_path_handler</code> and <a href="#val-set_top_handler"><code>set_top_handler</code></a> to specify how to handle incoming requests.</p><ul class="at-tags"><li class="parameter"><span class="at-tag">parameter</span> <span class="value">buf_size</span> <p>size for buffers (since 0.11)</p></li></ul><ul class="at-tags"><li class="parameter"><span class="at-tag">parameter</span> <span class="value">middlewares</span> <p>see <a href="#val-add_middleware"><code>add_middleware</code></a> for more details.</p></li></ul><ul class="at-tags"><li class="since"><span class="at-tag">since</span> 0.14</li></ul></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-addr"><a href="#val-addr" class="anchor"></a><code><span><span class="keyword">val</span> addr : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> string</span></code></div><div class="spec-doc"><p>Address on which the server listens.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-is_ipv6"><a href="#val-is_ipv6" class="anchor"></a><code><span><span class="keyword">val</span> is_ipv6 : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div><div class="spec-doc"><p><code>is_ipv6 server</code> returns <code>true</code> iff the address of the server is an IPv6 address.</p><ul class="at-tags"><li class="since"><span class="at-tag">since</span> 0.3</li></ul></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-port"><a href="#val-port" class="anchor"></a><code><span><span class="keyword">val</span> port : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> int</span></code></div><div class="spec-doc"><p>Port on which the server listens. Note that this might be different than the port initially given if the port was <code>0</code> (meaning that the OS picks a port for us).</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-active_connections"><a href="#val-active_connections" class="anchor"></a><code><span><span class="keyword">val</span> active_connections : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> int</span></code></div><div class="spec-doc"><p>Number of currently active connections.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-add_decode_request_cb"><a href="#val-add_decode_request_cb" class="anchor"></a><code><span><span class="keyword">val</span> add_decode_request_cb :
<a href="#type-t">t</a></span></code></div><div class="spec-doc"><p>Create a new webserver using provided backend.</p><p>The server will not do anything until <a href="#val-run"><code>run</code></a> is called on it. Before starting the server, one can use <code>add_path_handler</code> and <a href="#val-set_top_handler"><code>set_top_handler</code></a> to specify how to handle incoming requests.</p><ul class="at-tags"><li class="parameter"><span class="at-tag">parameter</span> <span class="value">buf_size</span> <p>size for buffers (since 0.11)</p></li></ul><ul class="at-tags"><li class="parameter"><span class="at-tag">parameter</span> <span class="value">middlewares</span> <p>see <a href="#val-add_middleware"><code>add_middleware</code></a> for more details.</p></li></ul><ul class="at-tags"><li class="parameter"><span class="at-tag">parameter</span> <span class="value">enable_logging</span> <p>if true and <code>Logs</code> is installed, emit logs via Logs (since NEXT_RELEASE). Default <code>true</code>.</p></li></ul><ul class="at-tags"><li class="since"><span class="at-tag">since</span> 0.14</li></ul></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-addr"><a href="#val-addr" class="anchor"></a><code><span><span class="keyword">val</span> addr : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> string</span></code></div><div class="spec-doc"><p>Address on which the server listens.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-is_ipv6"><a href="#val-is_ipv6" class="anchor"></a><code><span><span class="keyword">val</span> is_ipv6 : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div><div class="spec-doc"><p><code>is_ipv6 server</code> returns <code>true</code> iff the address of the server is an IPv6 address.</p><ul class="at-tags"><li class="since"><span class="at-tag">since</span> 0.3</li></ul></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-port"><a href="#val-port" class="anchor"></a><code><span><span class="keyword">val</span> port : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> int</span></code></div><div class="spec-doc"><p>Port on which the server listens. Note that this might be different than the port initially given if the port was <code>0</code> (meaning that the OS picks a port for us).</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-active_connections"><a href="#val-active_connections" class="anchor"></a><code><span><span class="keyword">val</span> active_connections : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> int</span></code></div><div class="spec-doc"><p>Number of currently active connections.</p></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-add_decode_request_cb"><a href="#val-add_decode_request_cb" class="anchor"></a><code><span><span class="keyword">val</span> add_decode_request_cb :
<span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span>
<span><span>(<span><span>unit <a href="../Request/index.html#type-t">Request.t</a></span> <span class="arrow">&#45;&gt;</span></span> <span><span>(<span>unit <a href="../Request/index.html#type-t">Request.t</a></span> * <span>(<span><a href="../IO/Input/class-type-t/index.html">IO.Input.t</a> <span class="arrow">&#45;&gt;</span></span> <a href="../IO/Input/class-type-t/index.html">IO.Input.t</a>)</span>)</span> option</span>)</span> <span class="arrow">&#45;&gt;</span></span>
unit</span></code></div><div class="spec-doc"><p>Add a callback for every request. The callback can provide a stream transformer and a new request (with modified headers, typically). A possible use is to handle decompression by looking for a <code>Transfer-Encoding</code> header and returning a stream transformer that decompresses on the fly.</p><ul class="at-tags"><li class="deprecated"><span class="at-tag">deprecated</span> <p>use <a href="#val-add_middleware"><code>add_middleware</code></a> instead</p></li></ul></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-add_encode_response_cb"><a href="#val-add_encode_response_cb" class="anchor"></a><code><span><span class="keyword">val</span> add_encode_response_cb :