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<!DOCTYPE html>
<html lang="en">
<head>
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<title>34000 requests per second on a modest laptop</title>
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<script>
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<!--BEGVDOC90-->
<div class='vhub' style='margin-top:10px;margin-right:20px;text-align:left;background-color:white;'><a href='https://rimstone-lang.com' style='border-bottom:0px'><img src='https://rimstone-lang.com/rimstone.png' style='width:180px;height:auto'/></a></div><div class='vhub' style='margin-top:10px;'>34000 requests per second on a modest laptop</div><hr/><br/>
This example shows how to create and start an application server, and how to connect to it and make requests from a C client (or from any language that supports C API extension). Create new directory for the RimStone server and also for C API client:<br/>
<div class="shcode" style='position:relative;padding-right:16px;'>
<pre id='code_173' class=notranslate>
<span class="Statement">mkdir</span> <span class="Special">-p</span> srv-example
<span class="Statement">cd</span> srv-example
<span class="Statement">mkdir</span> <span class="Special">-p</span> client</pre>
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</div><br/>
File "srv.rim" will have the code:<br/>
<div class='code' style='position:relative;padding-right:16px;'>
<pre id='code_172' class=notranslate>
cat << '<span class="Constant">EOF</span>' > srv.rim
<span class="Statement">begin-handler</span> /srv<span class="Identifier"> public</span>
<span class="Statement"> silent-header</span>
<span class="Statement"> @</span>Hello world!
<span class="Statement">end-handler</span>
<span class="Constant">EOF</span></pre>
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</div><br/>
Create RimStone application server:<br/>
<div class="shcode" style='position:relative;padding-right:16px;'>
<pre id='code_175' class=notranslate>
rim <span class="Special">-k</span> hello</pre>
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</div><br/>
Build RimStone application server (exclude client directory as it contains C API client). We use --release for a production executable of high performance:<br/>
<div class="shcode" style='position:relative;padding-right:16px;'>
<pre id='code_176' class=notranslate>
rim <span class="Special">-q</span> <span class="Special">--exclude-dir</span><span class="Statement">=</span>client <span class="Special">--release</span></pre>
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</div><br/>
Start the application server (a single-process server in this case):<br/>
<div class="shcode" style='position:relative;padding-right:16px;'>
<pre id='code_177' class=notranslate>
mrim <span class="Special">-w</span> <span class="Constant">1</span> hello</pre>
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</div><br/>
Next, go to C API client directory:<br/>
<div class="shcode" style='position:relative;padding-right:16px;'>
<pre id='code_178' class=notranslate>
<span class="Statement">cd</span> client</pre>
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</div><br/>
C file "cli.c" is created here:<br/>
<div class='code' style='position:relative;padding-right:16px;'>
<pre id='code_174' class=notranslate>
cat << '<span class="Constant">EOF</span>' > cli.c
<span class="PreProc">#include </span><span class="Constant">"rcli.h"</span>
<span class="Type">int</span> golf_client (rim_cli *req, <span class="Type">char</span> *connection, <span class="Type">char</span> *method, <span class="Type">char</span> *app_path, <span class="Type">char</span> *request, <span class="Type">char</span> *url_params);
<span class="Type">int</span> golf_client (rim_cli *req, <span class="Type">char</span> *connection, <span class="Type">char</span> *method, <span class="Type">char</span> *app_path, <span class="Type">char</span> *request, <span class="Type">char</span> *url_params)
<span class="Statement">{</span>
memset ((<span class="Type">char</span>*)req, <span class="Constant">0</span>, <span class="Statement">sizeof</span>(rim_cli));
req->server = connection;
req->req_method = method;
req->app_path = app_path;
req->req = request;
req->url_params = url_params;
<span class="Statement">return</span> rim_cli_request (req);
<span class="Statement">}</span>
<span class="Type">void</span> main ()
<span class="Statement">{</span>
<span class="Type">int</span> i;
<span class="Type">char</span> dir[RIM_MAX_OS_UDIR_LEN];
rim_dir (RIM_DIR_SOCKFILE, dir, <span class="Statement">sizeof</span>(dir), <span class="Constant">"hello"</span>, <span class="Constant">NULL</span>);
<span class="Statement">for</span> (i = <span class="Constant">0</span>; i < <span class="Constant">100000</span>; i++)
<span class="Statement"> {</span>
rim_cli req;
<span class="Type">int</span> res = golf_client (&req, dir, <span class="Constant">"GET"</span>, <span class="Constant">"/hello"</span>, <span class="Constant">"/srv"</span>, <span class="Constant">"/"</span>);
<span class="Statement">if</span> (res != RIM_OKAY) printf(<span class="Constant">"Request failed [</span><span class="Special">%d</span><span class="Constant">] [</span><span class="Special">%s</span><span class="Constant">]</span><span class="Special">\n</span><span class="Constant">"</span>, res, req.errm);
<span class="Statement">else</span> printf(<span class="Constant">"</span><span class="Special">%s</span><span class="Constant">"</span>, rim_cli_data(&req));
rim_cli_delete(&req);
<span class="Statement"> }</span>
<span class="Statement">}</span>
<span class="Constant">EOF</span></pre>
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</div><br/>
Compile the client:<br/>
<div class="shcode" style='position:relative;padding-right:16px;'>
<pre id='code_179' class=notranslate>
gcc <span class="Special">-o</span> cli cli.c <span class="PreProc">$(</span><span class="Special">rim </span><span class="Special">-i</span><span class="PreProc">)</span> <span class="Special">-O</span>3</pre>
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</div><br/>
Run it:<br/>
<div class="shcode" style='position:relative;padding-right:16px;'>
<pre id='code_180' class=notranslate>
./cli</pre>
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</div><br/>
The result is "Hello world!" 100,000 times from each request invocation.<br/>
<!--ENDVDOC90-->
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