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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>2.14 Limiting Requests</title><link rel="stylesheet" type="text/css" href="../scribble.css" title="default"/><link rel="stylesheet" type="text/css" href="../racket.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-style.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-racket.css" title="default"/><link rel="stylesheet" type="text/css" href="../doc-site.css" title="default"/><script type="text/javascript" src="../scribble-common.js"></script><script type="text/javascript" src="../manual-racket.js"></script><script type="text/javascript" src="../doc-site.js"></script><script type="text/javascript" src="../local-redirect/local-redirect.js"></script><script type="text/javascript" src="../local-redirect/local-user-redirect.js"></script><!--[if IE 6]><style type="text/css">.SIEHidden { overflow: hidden; }</style><![endif]--></head><body id="doc-racket-lang-org"><div class="tocset"><div class="tocview"><div class="tocviewlist tocviewlisttopspace"><div class="tocviewtitle"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,"tocview_0");">►</a></td><td></td><td><a href="index.html" class="tocviewlink" data-pltdoc="x">Web Server:<span class="mywbr"> </span> HTTP Server</a></td></tr></table></div><div class="tocviewsublisttop" style="display: none;" id="tocview_0"><table cellspacing="0" cellpadding="0"><tr><td align="right">1 </td><td><a href="dispatch-server-unit.html" class="tocviewlink" data-pltdoc="x">Dispatching Server</a></td></tr><tr><td align="right">2 </td><td><a href="dispatchers.html" class="tocviewselflink" data-pltdoc="x">Dispatchers</a></td></tr><tr><td align="right">3 </td><td><a href="web-server.html" class="tocviewlink" data-pltdoc="x">Launching Servers</a></td></tr><tr><td align="right">4 </td><td><a href="Web_Servers.html" class="tocviewlink" data-pltdoc="x">Web Servers</a></td></tr><tr><td align="right">5 </td><td><a href="private.html" class="tocviewlink" data-pltdoc="x">Internal APIs</a></td></tr><tr><td align="right">6 </td><td><a href="Troubleshooting_and_Tips.html" class="tocviewlink" data-pltdoc="x">Troubleshooting and Tips</a></td></tr><tr><td align="right"></td><td><a href="doc-index.html" class="tocviewlink" data-pltdoc="x">Index</a></td></tr></table></div></div><div class="tocviewlist"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,"tocview_1");">▼</a></td><td>2 </td><td><a href="dispatchers.html" class="tocviewlink" data-pltdoc="x">Dispatchers</a></td></tr></table><div class="tocviewsublistbottom" style="display: block;" id="tocview_1"><table cellspacing="0" cellpadding="0"><tr><td align="right">2.1 </td><td><a href="dispatch.html" class="tocviewlink" data-pltdoc="x">General</a></td></tr><tr><td align="right">2.2 </td><td><a href="filesystem-map.html" class="tocviewlink" data-pltdoc="x">Mapping URLs to Paths</a></td></tr><tr><td align="right">2.3 </td><td><a href="dispatch-sequencer.html" class="tocviewlink" data-pltdoc="x">Sequencing</a></td></tr><tr><td align="right">2.4 </td><td><a href="dispatch-timeout.html" class="tocviewlink" data-pltdoc="x">Timeouts</a></td></tr><tr><td align="right">2.5 </td><td><a href="dispatch-lift.html" class="tocviewlink" data-pltdoc="x">Lifting Procedures</a></td></tr><tr><td align="right">2.6 </td><td><a href="dispatch-filter.html" class="tocviewlink" data-pltdoc="x">Filtering Requests</a></td></tr><tr><td align="right">2.7 </td><td><a href="dispatch-pathprocedure.html" class="tocviewlink" data-pltdoc="x">Procedure Invocation upon Request</a></td></tr><tr><td align="right">2.8 </td><td><a href="dispatch-log.html" class="tocviewlink" data-pltdoc="x">Logging</a></td></tr><tr><td align="right">2.9 </td><td><a href="dispatch-passwords.html" class="tocviewlink" data-pltdoc="x">Password Protection</a></td></tr><tr><td align="right">2.10 </td><td><a href="dispatch-host.html" class="tocviewlink" data-pltdoc="x">Virtual Hosts</a></td></tr><tr><td align="right">2.11 </td><td><a href="dispatch-files.html" class="tocviewlink" data-pltdoc="x">Serving Files</a></td></tr><tr><td align="right">2.12 </td><td><a href="dispatch-servlets.html" class="tocviewlink" data-pltdoc="x">Serving Servlets</a></td></tr><tr><td align="right">2.13 </td><td><a href="dispatch-stat.html" class="tocviewlink" data-pltdoc="x">Statistics</a></td></tr><tr><td align="right">2.14 </td><td><a href="" class="tocviewselflink" data-pltdoc="x">Limiting Requests</a></td></tr></table></div></div></div><div class="tocsub"><div class="tocsubtitle">On this page:</div><table class="tocsublist" cellspacing="0"><tr><td><a href="#%28def._%28%28lib._web-server%2Fdispatchers%2Flimit..rkt%29._make%29%29" class="tocsublink" data-pltdoc="x"><span class="RktSym"><span class="RktValLink">make</span></span></a></td></tr></table></div></div><div class="maincolumn"><div class="main"><div class="navsettop"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.7", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> <a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot("6.7");">top</a></span><span class="navright"> <a href="dispatch-stat.html" title="backward to "2.13 Statistics"" data-pltdoc="x">← prev</a> <a href="dispatchers.html" title="up to "2 Dispatchers"" data-pltdoc="x">up</a> <a href="web-server.html" title="forward to "3 Launching Servers"" data-pltdoc="x">next →</a></span> </div><h4 x-source-module="(lib "web-server/scribblings/web-server-internal.scrbl")" x-source-pkg="web-server-doc" x-part-tag=""limit"">2.14<tt> </tt><a name="(part._limit)"></a><a name="(mod-path._web-server/dispatchers/limit)"></a>Limiting Requests</h4><p><div class="SIntrapara"><table cellspacing="0" cellpadding="0" class="defmodule"><tr><td align="left" colspan="2"><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._require%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">require</a></span><span class="stt"> </span><a href="" class="RktModLink" data-pltdoc="x"><span class="RktSym">web-server/dispatchers/limit</span></a><span class="RktPn">)</span></td></tr><tr><td align="left"> </td><td align="right"><span class="RpackageSpec"><span class="Smaller"> package:</span> <span class="stt">web-server-lib</span></span></td></tr></table></div><div class="SIntrapara">The <a href="" class="RktModLink" data-pltdoc="x"><span class="RktSym">web-server/dispatchers/limit</span></a> module provides a wrapper dispatcher that limits how many requests are serviced at once.</div><div class="SIntrapara"><blockquote class="SVInsetFlow"><table cellspacing="0" cellpadding="0" class="boxed RBoxed"><tr><td><blockquote class="SubFlow"><div class="RBackgroundLabel SIEHidden"><div class="RBackgroundLabelInner"><p>procedure</p></div></div><p class="RForeground"><span class="RktPn">(</span><a name="(def._((lib._web-server/dispatchers/limit..rkt)._make))"></a><span title="Provided from: web-server/dispatchers/limit | Package: web-server-lib"><span class="RktSym"><a href="#%28def._%28%28lib._web-server%2Fdispatchers%2Flimit..rkt%29._make%29%29" class="RktValDef RktValLink" data-pltdoc="x">make</a></span></span><span class="hspace"> </span><span class="RktVar">limit</span><span class="hspace"> </span><span class="RktVar">inner</span><span class="hspace"> </span>[<span class="RktPn">#:over-limit</span><span class="hspace"> </span><span class="RktVar">over-limit</span>]<span class="RktPn">)</span><span class="hspace"> </span>→<span class="hspace"> </span><span class="RktSym"><a href="dispatch.html#%28def._%28%28lib._web-server%2Fdispatchers%2Fdispatch..rkt%29._dispatcher%2Fc%29%29" class="RktValLink" data-pltdoc="x">dispatcher/c</a></span></p></blockquote></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">limit</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=number-types.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._number%7E3f%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">number?</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">inner</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktSym"><a href="dispatch.html#%28def._%28%28lib._web-server%2Fdispatchers%2Fdispatch..rkt%29._dispatcher%2Fc%29%29" class="RktValLink" data-pltdoc="x">dispatcher/c</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVar">over-limit</span><span class="hspace"> </span>:<span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=data-structure-contracts.html%23%2528def._%2528%2528lib._racket%252Fcontract%252Fbase..rkt%2529._symbols%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">symbols</a></span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">block</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">kill-new</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">kill-old</span><span class="RktPn">)</span><span class="hspace"> </span>=<span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">block</span></td></tr></table></blockquote></div><div class="SIntrapara">Returns a dispatcher that defers to <span class="RktVar">inner</span> for work, but will forward a maximum of <span class="RktVar">limit</span> requests concurrently.</div></p><p>If there are no additional spaces inside the limit and a new request is received, the <span class="RktVar">over-limit</span> option determines what is done.
The default (<span class="RktVal">'</span><span class="RktVal">block</span>) causes the new request to block until an old request is finished being handled.
If <span class="RktVar">over-limit</span> is <span class="RktVal">'</span><span class="RktVal">kill-new</span>, then the new request handler is killed—<wbr></wbr>a form of load-shedding.
If <span class="RktVar">over-limit</span> is <span class="RktVal">'</span><span class="RktVal">kill-old</span>, then the oldest request handler is killed—<wbr></wbr>prioritizing new connections over old.
(This setting is a little dangerous because requests might never finish if there is constant load.)</p><p><div class="SIntrapara">Consider this example:
</div><div class="SIntrapara"><blockquote class="SCodeFlow"><table cellspacing="0" cellpadding="0" class="RktBlk"><tr><td><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=guide&rel=Module_Syntax.html%23%2528part._hash-lang%2529&version=6.7" class="RktModLink Sq" data-pltdoc="x"><span class="RktMod">#lang</span></a><span class="hspace"> </span><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=index.html&version=6.7" class="RktModLink Sq" data-pltdoc="x"><span class="RktSym">racket</span></a></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._require%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">require</a></span><span class="hspace"> </span><span class="RktSym">web-server/web-server</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">web-server/http</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">web-server/http/response</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._prefix-in%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">prefix-in</a></span><span class="hspace"> </span><span class="RktSym">limit:</span><span class="hspace"> </span><span class="RktSym">web-server/dispatchers/limit</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._prefix-in%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">prefix-in</a></span><span class="hspace"> </span><span class="RktSym">filter:</span><span class="hspace"> </span><span class="RktSym">web-server/dispatchers/dispatch-filter</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=require.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._prefix-in%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">prefix-in</a></span><span class="hspace"> </span><span class="RktSym">sequencer:</span><span class="hspace"> </span><span class="RktSym">web-server/dispatchers/dispatch-sequencer</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="web-server.html#%28def._%28%28lib._web-server%2Fweb-server..rkt%29._serve%29%29" class="RktValLink" data-pltdoc="x">serve</a></span><span class="hspace"> </span><span class="RktPn">#:dispatch</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="dispatch-sequencer.html#%28def._%28%28lib._web-server%2Fdispatchers%2Fdispatch-sequencer..rkt%29._make%29%29" class="RktValLink" data-pltdoc="x">sequencer:make</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="dispatch-filter.html#%28def._%28%28lib._web-server%2Fdispatchers%2Fdispatch-filter..rkt%29._make%29%29" class="RktValLink" data-pltdoc="x">filter:make</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">#rx"/limited"</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="#%28def._%28%28lib._web-server%2Fdispatchers%2Flimit..rkt%29._make%29%29" class="RktValLink" data-pltdoc="x">limit:make</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">5</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">conn</span><span class="hspace"> </span><span class="RktSym">req</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">output-response/method</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">conn</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=web-server&rel=http.html%23%2528def._%2528%2528lib._web-server%252Fhttp%252Fresponse-structs..rkt%2529._response%252Ffull%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">response/full</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktVal">200</span><span class="hspace"> </span><span class="RktVal">#"Okay"</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=time.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._current-seconds%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">current-seconds</a></span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=web-server&rel=http.html%23%2528def._%2528%2528lib._web-server%252Fhttp%252Fresponse-structs..rkt%2529._.T.E.X.T%252F.H.T.M.L-.M.I.M.E-.T.Y.P.E%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">TEXT/HTML-MIME-TYPE</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">empty</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._list%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">list</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=bytestrings.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._string-%7E3ebytes%252Futf-8%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">string->bytes/utf-8</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=Writing.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._format%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">format</a></span><span class="hspace"> </span><span class="RktVal">"hello world ~a"</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Flist..rkt%2529._sort%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">sort</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Flist..rkt%2529._build-list%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">build-list</a></span><span class="hspace"> </span><span class="RktVal">100000</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._%7Ece%7Ebb%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">λ</a></span><span class="hspace"> </span><span class="RktSym">x</span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._random%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">random</a></span><span class="hspace"> </span><span class="RktVal">1000</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=generic-numbers.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._%7E3c%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x"><</a></span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=web-server&rel=http.html%23%2528def._%2528%2528lib._web-server%252Fhttp%252Frequest-structs..rkt%2529._request-method%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">request-method</a></span><span class="hspace"> </span><span class="RktSym">req</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">#:over-limit</span><span class="hspace"> </span><span class="RktVal">'</span><span class="RktVal">block</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=lambda.html%23%2528form._%2528%2528lib._racket%252Fprivate%252Fbase..rkt%2529._lambda%2529%2529&version=6.7" class="RktStxLink Sq" data-pltdoc="x">lambda</a></span><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">conn</span><span class="hspace"> </span><span class="RktSym">req</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym">output-response/method</span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">conn</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=web-server&rel=http.html%23%2528def._%2528%2528lib._web-server%252Fhttp%252Fresponse-structs..rkt%2529._response%252Ffull%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">response/full</a></span><span class="hspace"> </span><span class="RktVal">200</span><span class="hspace"> </span><span class="RktVal">#"Okay"</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=time.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._current-seconds%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">current-seconds</a></span><span class="RktPn">)</span><span class="hspace"> </span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=web-server&rel=http.html%23%2528def._%2528%2528lib._web-server%252Fhttp%252Fresponse-structs..rkt%2529._.T.E.X.T%252F.H.T.M.L-.M.I.M.E-.T.Y.P.E%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">TEXT/HTML-MIME-TYPE</a></span></td></tr><tr><td><span class="hspace"> </span><span class="RktSym">empty</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=reference&rel=pairs.html%23%2528def._%2528%2528quote._%7E23%7E25kernel%2529._list%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">list</a></span><span class="hspace"> </span><span class="RktVal">#"<html><body>Unlimited</body></html>"</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">(</span><span class="RktSym"><a href="https://download.racket-lang.org/docs/6.7/html/local-redirect/index.html?doc=web-server&rel=http.html%23%2528def._%2528%2528lib._web-server%252Fhttp%252Frequest-structs..rkt%2529._request-method%2529%2529&version=6.7" class="RktValLink Sq" data-pltdoc="x">request-method</a></span><span class="hspace"> </span><span class="RktSym">req</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span><span class="RktPn">#:port</span><span class="hspace"> </span><span class="RktVal">8080</span><span class="RktPn">)</span></td></tr><tr><td><span class="hspace"> </span></td></tr><tr><td><span class="RktPn">(</span><span class="RktSym"><a href="web-server.html#%28def._%28%28lib._web-server%2Fweb-server..rkt%29._do-not-return%29%29" class="RktValLink" data-pltdoc="x">do-not-return</a></span><span class="RktPn">)</span></td></tr></table></blockquote></div></p><div class="navsetbottom"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.7", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if 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