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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>Net: Networking Libraries</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,&quot;tocview_0&quot;);">&#9660;</a></td><td></td><td><a href="" class="tocviewselflink" data-pltdoc="x">Net:<span class="mywbr"> &nbsp;</span> Networking Libraries</a></td></tr></table></div><div class="tocviewsublistonly" style="display: block;" id="tocview_0"><table cellspacing="0" cellpadding="0"><tr><td align="right">1&nbsp;</td><td><a href="http-client.html" class="tocviewlink" data-pltdoc="x">HTTP Client</a></td></tr><tr><td align="right">2&nbsp;</td><td><a href="url.html" class="tocviewlink" data-pltdoc="x">URLs and HTTP</a></td></tr><tr><td align="right">3&nbsp;</td><td><a href="uri-codec.html" class="tocviewlink" data-pltdoc="x">URI Codec:<span class="mywbr"> &nbsp;</span> Encoding and Decoding URIs</a></td></tr><tr><td align="right">4&nbsp;</td><td><a href="websocket.html" class="tocviewlink" data-pltdoc="x">Web<span class="mywbr"> &nbsp;</span>Socket</a></td></tr><tr><td align="right">5&nbsp;</td><td><a href="ftp.html" class="tocviewlink" data-pltdoc="x">FTP:<span class="mywbr"> &nbsp;</span> Client</a></td></tr><tr><td align="right">6&nbsp;</td><td><a href="sendurl.html" class="tocviewlink" data-pltdoc="x">Send URL:<span class="mywbr"> &nbsp;</span> Opening a Web Browser</a></td></tr><tr><td align="right">7&nbsp;</td><td><a href="smtp.html" class="tocviewlink" data-pltdoc="x">SMTP:<span class="mywbr"> &nbsp;</span> Sending E-<wbr></wbr>Mail</a></td></tr><tr><td align="right">8&nbsp;</td><td><a href="sendmail.html" class="tocviewlink" data-pltdoc="x"><span class="stt">sendmail</span>:<span class="mywbr"> &nbsp;</span> Sending E-<wbr></wbr>Mail</a></td></tr><tr><td align="right">9&nbsp;</td><td><a href="head.html" class="tocviewlink" data-pltdoc="x">Headers:<span class="mywbr"> &nbsp;</span> Parsing and Constructing</a></td></tr><tr><td align="right">10&nbsp;</td><td><a href="imap.html" class="tocviewlink" data-pltdoc="x">IMAP:<span class="mywbr"> &nbsp;</span> Reading Mail</a></td></tr><tr><td align="right">11&nbsp;</td><td><a href="pop3.html" class="tocviewlink" data-pltdoc="x">POP3:<span class="mywbr"> &nbsp;</span> Reading Mail</a></td></tr><tr><td align="right">12&nbsp;</td><td><a href="mime.html" class="tocviewlink" data-pltdoc="x">MIME:<span class="mywbr"> &nbsp;</span> Decoding Internet Data</a></td></tr><tr><td align="right">13&nbsp;</td><td><a href="base64.html" class="tocviewlink" data-pltdoc="x">Base 64:<span class="mywbr"> &nbsp;</span> Encoding and Decoding</a></td></tr><tr><td align="right">14&nbsp;</td><td><a href="qp.html" class="tocviewlink" data-pltdoc="x">Quoted-<wbr></wbr>Printable:<span class="mywbr"> &nbsp;</span> Encoding and Decoding</a></td></tr><tr><td align="right">15&nbsp;</td><td><a href="dns.html" class="tocviewlink" data-pltdoc="x">DNS:<span class="mywbr"> &nbsp;</span> Domain Name Service Queries</a></td></tr><tr><td align="right">16&nbsp;</td><td><a href="nntp.html" class="tocviewlink" data-pltdoc="x">NNTP:<span class="mywbr"> &nbsp;</span> Newsgroup Protocol</a></td></tr><tr><td align="right">17&nbsp;</td><td><a href="tcp.html" class="tocviewlink" data-pltdoc="x">TCP:<span class="mywbr"> &nbsp;</span> Unit and Signature</a></td></tr><tr><td align="right">18&nbsp;</td><td><a href="tcp-redirect.html" class="tocviewlink" data-pltdoc="x">TCP Redirect:<span class="mywbr"> &nbsp;</span> <span class="RktSym"><span class="RktStxLink">tcp^</span></span> via Channels</a></td></tr><tr><td align="right">19&nbsp;</td><td><a href="ssl-tcp-unit.html" class="tocviewlink" data-pltdoc="x">SSL Unit:<span class="mywbr"> &nbsp;</span> <span class="RktSym"><span class="RktStxLink">tcp^</span></span> via SSL</a></td></tr><tr><td align="right">20&nbsp;</td><td><a href="cgi.html" class="tocviewlink" data-pltdoc="x">CGI Scripts</a></td></tr><tr><td align="right">21&nbsp;</td><td><a href="cookie.html" class="tocviewlink" data-pltdoc="x">Cookie:<span class="mywbr"> &nbsp;</span> HTTP Client Storage</a></td></tr><tr><td align="right"></td><td><a href="doc-bibliography.html" class="tocviewlink" data-pltdoc="x">Bibliography</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><div class="tocsub"><div class="tocsubtitle">On this page:</div><table class="tocsublist" cellspacing="0"><tr><td><span class="tocsublinknumber"></span><a href="#%28part._top%29" class="tocsubseclink" data-pltdoc="x">Net:<span class="mywbr"> &nbsp;</span> Networking Libraries</a></td></tr></table></div></div><div class="maincolumn"><div class="main"><div class="versionbox"><span class="version">6.1</span></div><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, &quot;6.1&quot;, &quot;../&quot;);" onfocus="this.style.color=&quot;black&quot;; this.style.textAlign=&quot;left&quot;; if (this.value == &quot;...search manuals...&quot;) this.value=&quot;&quot;;" onblur="if (this.value.match(/^ *$/)) { this.style.color=&quot;#888&quot;; this.style.textAlign=&quot;center&quot;; this.value=&quot;...search manuals...&quot;; }"/></form>&nbsp;&nbsp;<a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot(&quot;6.1&quot;);">top</a></span><span class="navright">&nbsp;&nbsp;<span class="nonavigation">&larr; prev</span>&nbsp;&nbsp;<a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot(&quot;6.1&quot;);">up</a>&nbsp;&nbsp;<a href="http-client.html" title="forward to &quot;1 HTTP Client&quot;" data-pltdoc="x">next &rarr;</a></span>&nbsp;</div><h2 x-source-module="(lib &quot;net/scribblings/net.scrbl&quot;)" x-part-tag="&quot;top&quot;"><a name="(part._top)"></a><a name="(part._.Net__.Networking_.Libraries)"></a>Net: Networking Libraries</h2><table cellspacing="0" cellpadding="0"><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="http-client.html" class="toptoclink" data-pltdoc="x">1<span class="hspace">&nbsp;</span>HTTP Client</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="http-client.html#%28part._faq%29" class="toclink" data-pltdoc="x">1.1<span class="hspace">&nbsp;</span>Troubleshooting and Tips</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="http-client.html#%28part._.How_do_.I_send_properly_formatted_.P.O.S.T_form_requests_%29" class="toclink" data-pltdoc="x">1.1.1<span class="hspace">&nbsp;</span>How do I send properly formatted POST form requests?</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="url.html" class="toptoclink" data-pltdoc="x">2<span class="hspace">&nbsp;</span>URLs and HTTP</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="url.html#%28part._.U.R.L_.Structure%29" class="toclink" data-pltdoc="x">2.1<span class="hspace">&nbsp;</span>URL Structure</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="url.html#%28part._.U.R.L_.Functions%29" class="toclink" data-pltdoc="x">2.2<span class="hspace">&nbsp;</span>URL Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="url.html#%28part._.U.R.L_.H.T.T.P.S_mode%29" class="toclink" data-pltdoc="x">2.3<span class="hspace">&nbsp;</span>URL HTTPS mode</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="url.html#%28part._.U.R.L_.Unit%29" class="toclink" data-pltdoc="x">2.4<span class="hspace">&nbsp;</span>URL Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="url.html#%28part._.U.R.L_.Signature%29" class="toclink" data-pltdoc="x">2.5<span class="hspace">&nbsp;</span>URL Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="uri-codec.html" class="toptoclink" data-pltdoc="x">3<span class="hspace">&nbsp;</span>URI Codec: Encoding and Decoding URIs</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="uri-codec.html#%28part._uri-codec-proc%29" class="toclink" data-pltdoc="x">3.1<span class="hspace">&nbsp;</span>Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="uri-codec.html#%28part._.U.R.I_.Codec_.Unit%29" class="toclink" data-pltdoc="x">3.2<span class="hspace">&nbsp;</span>URI Codec Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="uri-codec.html#%28part._.U.R.I_.Codec_.Signature%29" class="toclink" data-pltdoc="x">3.3<span class="hspace">&nbsp;</span>URI Codec Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="websocket.html" class="toptoclink" data-pltdoc="x">4<span class="hspace">&nbsp;</span>WebSocket</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="websocket.html#%28part._.Client_.A.P.I%29" class="toclink" data-pltdoc="x">4.1<span class="hspace">&nbsp;</span>Client API</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="websocket.html#%28part._.Server_.A.P.I%29" class="toclink" data-pltdoc="x">4.2<span class="hspace">&nbsp;</span>Server API</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="websocket.html#%28part._.Connections%29" class="toclink" data-pltdoc="x">4.3<span class="hspace">&nbsp;</span>Connections</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="websocket.html#%28part._.Example%29" class="toclink" data-pltdoc="x">4.4<span class="hspace">&nbsp;</span>Example</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="ftp.html" class="toptoclink" data-pltdoc="x">5<span class="hspace">&nbsp;</span>FTP: Client</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="ftp.html#%28part._ftp-procs%29" class="toclink" data-pltdoc="x">5.1<span class="hspace">&nbsp;</span>Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="ftp.html#%28part._.F.T.P_.Unit%29" class="toclink" data-pltdoc="x">5.2<span class="hspace">&nbsp;</span>FTP Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="ftp.html#%28part._.F.T.P_.Signature%29" class="toclink" data-pltdoc="x">5.3<span class="hspace">&nbsp;</span>FTP Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="sendurl.html" class="toptoclink" data-pltdoc="x">6<span class="hspace">&nbsp;</span>Send URL: Opening a Web Browser</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="smtp.html" class="toptoclink" data-pltdoc="x">7<span class="hspace">&nbsp;</span>SMTP: Sending E-Mail</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="smtp.html#%28part._.S.M.T.P_.Functions%29" class="toclink" data-pltdoc="x">7.1<span class="hspace">&nbsp;</span>SMTP Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="smtp.html#%28part._.S.M.T.P_.Unit%29" class="toclink" data-pltdoc="x">7.2<span class="hspace">&nbsp;</span>SMTP Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="smtp.html#%28part._.S.M.T.P_.Signature%29" class="toclink" data-pltdoc="x">7.3<span class="hspace">&nbsp;</span>SMTP Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="sendmail.html" class="toptoclink" data-pltdoc="x">8<span class="hspace">&nbsp;</span><span class="stt">sendmail</span>: Sending E-Mail</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="sendmail.html#%28part._.Sendmail_.Functions%29" class="toclink" data-pltdoc="x">8.1<span class="hspace">&nbsp;</span>Sendmail Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="sendmail.html#%28part._.Sendmail_.Unit%29" class="toclink" data-pltdoc="x">8.2<span class="hspace">&nbsp;</span>Sendmail Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="sendmail.html#%28part._.Sendmail_.Signature%29" class="toclink" data-pltdoc="x">8.3<span class="hspace">&nbsp;</span>Sendmail Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="head.html" class="toptoclink" data-pltdoc="x">9<span class="hspace">&nbsp;</span>Headers: Parsing and Constructing</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="head.html#%28part._.Functions%29" class="toclink" data-pltdoc="x">9.1<span class="hspace">&nbsp;</span>Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="head.html#%28part._.Header_.Unit%29" class="toclink" data-pltdoc="x">9.2<span class="hspace">&nbsp;</span>Header Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="head.html#%28part._.Header_.Signature%29" class="toclink" data-pltdoc="x">9.3<span class="hspace">&nbsp;</span>Header Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="imap.html" class="toptoclink" data-pltdoc="x">10<span class="hspace">&nbsp;</span>IMAP: Reading Mail</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="imap.html#%28part._.Connecting_and_.Selecting_.Mailboxes%29" class="toclink" data-pltdoc="x">10.1<span class="hspace">&nbsp;</span>Connecting and Selecting Mailboxes</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="imap.html#%28part._.Selected_.Mailbox_.State%29" class="toclink" data-pltdoc="x">10.2<span class="hspace">&nbsp;</span>Selected Mailbox State</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="imap.html#%28part._.Manipulating_.Messages%29" class="toclink" data-pltdoc="x">10.3<span class="hspace">&nbsp;</span>Manipulating Messages</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="imap.html#%28part._.Querying_and_.Changing__.Other__.Mailboxes%29" class="toclink" data-pltdoc="x">10.4<span class="hspace">&nbsp;</span>Querying and Changing (Other) Mailboxes</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="imap.html#%28part._.I.M.A.P_.Unit%29" class="toclink" data-pltdoc="x">10.5<span class="hspace">&nbsp;</span>IMAP Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="imap.html#%28part._.I.M.A.P_.Signature%29" class="toclink" data-pltdoc="x">10.6<span class="hspace">&nbsp;</span>IMAP Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="pop3.html" class="toptoclink" data-pltdoc="x">11<span class="hspace">&nbsp;</span>POP3: Reading Mail</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="pop3.html#%28part._pop3-exns%29" class="toclink" data-pltdoc="x">11.1<span class="hspace">&nbsp;</span>Exceptions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="pop3.html#%28part._.Example_.Session%29" class="toclink" data-pltdoc="x">11.2<span class="hspace">&nbsp;</span>Example Session</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="pop3.html#%28part._.P.O.P3_.Unit%29" class="toclink" data-pltdoc="x">11.3<span class="hspace">&nbsp;</span>POP3 Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="pop3.html#%28part._.P.O.P3_.Signature%29" class="toclink" data-pltdoc="x">11.4<span class="hspace">&nbsp;</span>POP3 Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="mime.html" class="toptoclink" data-pltdoc="x">12<span class="hspace">&nbsp;</span>MIME: Decoding Internet Data</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="mime.html#%28part._.Message_.Decoding%29" class="toclink" data-pltdoc="x">12.1<span class="hspace">&nbsp;</span>Message Decoding</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="mime.html#%28part._mime-exns%29" class="toclink" data-pltdoc="x">12.2<span class="hspace">&nbsp;</span>Exceptions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="mime.html#%28part._.M.I.M.E_.Unit%29" class="toclink" data-pltdoc="x">12.3<span class="hspace">&nbsp;</span>MIME Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="mime.html#%28part._.M.I.M.E_.Signature%29" class="toclink" data-pltdoc="x">12.4<span class="hspace">&nbsp;</span>MIME Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="base64.html" class="toptoclink" data-pltdoc="x">13<span class="hspace">&nbsp;</span>Base 64: Encoding and Decoding</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="base64.html#%28part._base64-procs%29" class="toclink" data-pltdoc="x">13.1<span class="hspace">&nbsp;</span>Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="base64.html#%28part._.Base64_.Unit%29" class="toclink" data-pltdoc="x">13.2<span class="hspace">&nbsp;</span>Base64 Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="base64.html#%28part._.Base64_.Signature%29" class="toclink" data-pltdoc="x">13.3<span class="hspace">&nbsp;</span>Base64 Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="qp.html" class="toptoclink" data-pltdoc="x">14<span class="hspace">&nbsp;</span>Quoted-Printable: Encoding and Decoding</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="qp.html#%28part._qp-procs%29" class="toclink" data-pltdoc="x">14.1<span class="hspace">&nbsp;</span>Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="qp.html#%28part._qp-exn%29" class="toclink" data-pltdoc="x">14.2<span class="hspace">&nbsp;</span>Exceptions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="qp.html#%28part._.Quoted-.Printable_.Unit%29" class="toclink" data-pltdoc="x">14.3<span class="hspace">&nbsp;</span>Quoted-Printable Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="qp.html#%28part._-.Printable_.Signature%29" class="toclink" data-pltdoc="x">14.4<span class="hspace">&nbsp;</span>-Printable Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="dns.html" class="toptoclink" data-pltdoc="x">15<span class="hspace">&nbsp;</span>DNS: Domain Name Service Queries</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="dns.html#%28part._dns-proc%29" class="toclink" data-pltdoc="x">15.1<span class="hspace">&nbsp;</span>Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="dns.html#%28part._.D.N.S_.Unit%29" class="toclink" data-pltdoc="x">15.2<span class="hspace">&nbsp;</span>DNS Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="dns.html#%28part._.D.N.S_.Signature%29" class="toclink" data-pltdoc="x">15.3<span class="hspace">&nbsp;</span>DNS Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="nntp.html" class="toptoclink" data-pltdoc="x">16<span class="hspace">&nbsp;</span>NNTP: Newsgroup Protocol</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="nntp.html#%28part._.Connection_and_.Operations%29" class="toclink" data-pltdoc="x">16.1<span class="hspace">&nbsp;</span>Connection and Operations</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="nntp.html#%28part._.Exceptions%29" class="toclink" data-pltdoc="x">16.2<span class="hspace">&nbsp;</span>Exceptions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="nntp.html#%28part._.N.N.T.P_.Unit%29" class="toclink" data-pltdoc="x">16.3<span class="hspace">&nbsp;</span>NNTP Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="nntp.html#%28part._.N.N.T.P_.Signature%29" class="toclink" data-pltdoc="x">16.4<span class="hspace">&nbsp;</span>NNTP Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="tcp.html" class="toptoclink" data-pltdoc="x">17<span class="hspace">&nbsp;</span>TCP: Unit and Signature</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="tcp.html#%28part._.T.C.P_.Signature%29" class="toclink" data-pltdoc="x">17.1<span class="hspace">&nbsp;</span>TCP Signature</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="tcp.html#%28part._.T.C.P_.Unit%29" class="toclink" data-pltdoc="x">17.2<span class="hspace">&nbsp;</span>TCP Unit</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="tcp-redirect.html" class="toptoclink" data-pltdoc="x">18<span class="hspace">&nbsp;</span>TCP Redirect: <span class="RktSym"><span class="RktStxLink">tcp^</span></span> via Channels</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="ssl-tcp-unit.html" class="toptoclink" data-pltdoc="x">19<span class="hspace">&nbsp;</span>SSL Unit: <span class="RktSym"><span class="RktStxLink">tcp^</span></span> via SSL</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cgi.html" class="toptoclink" data-pltdoc="x">20<span class="hspace">&nbsp;</span>CGI Scripts</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cgi.html#%28part._.C.G.I_.Functions%29" class="toclink" data-pltdoc="x">20.1<span class="hspace">&nbsp;</span>CGI Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cgi.html#%28part._.C.G.I_.Unit%29" class="toclink" data-pltdoc="x">20.2<span class="hspace">&nbsp;</span>CGI Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cgi.html#%28part._.C.G.I_.Signature%29" class="toclink" data-pltdoc="x">20.3<span class="hspace">&nbsp;</span>CGI Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cookie.html" class="toptoclink" data-pltdoc="x">21<span class="hspace">&nbsp;</span>Cookie: HTTP Client Storage</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cookie.html#%28part._cookie-procs%29" class="toclink" data-pltdoc="x">21.1<span class="hspace">&nbsp;</span>Functions</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cookie.html#%28part._cookie-examples%29" class="toclink" data-pltdoc="x">21.2<span class="hspace">&nbsp;</span>Examples</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cookie.html#%28part._.Creating_a_cookie%29" class="toclink" data-pltdoc="x">21.2.1<span class="hspace">&nbsp;</span>Creating a cookie</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cookie.html#%28part._.Parsing_a_cookie%29" class="toclink" data-pltdoc="x">21.2.2<span class="hspace">&nbsp;</span>Parsing a cookie</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cookie.html#%28part._.Cookie_.Unit%29" class="toclink" data-pltdoc="x">21.3<span class="hspace">&nbsp;</span>Cookie Unit</a></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="cookie.html#%28part._.Cookie_.Signature%29" class="toclink" data-pltdoc="x">21.4<span class="hspace">&nbsp;</span>Cookie Signature</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="doc-bibliography.html" class="toptoclink" data-pltdoc="x">Bibliography</a></p></td></tr><tr><td><p><span class="hspace"></span></p></td></tr><tr><td><p><span class="hspace">&nbsp;&nbsp;&nbsp;&nbsp;</span><a href="doc-index.html" class="toptoclink" data-pltdoc="x">Index</a></p></td></tr></table><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, &quot;6.1&quot;, &quot;../&quot;);" onfocus="this.style.color=&quot;black&quot;; this.style.textAlign=&quot;left&quot;; if (this.value == &quot;...search manuals...&quot;) this.value=&quot;&quot;;" onblur="if (this.value.match(/^ *$/)) { this.style.color=&quot;#888&quot;; this.style.textAlign=&quot;center&quot;; this.value=&quot;...search manuals...&quot;; }"/></form>&nbsp;&nbsp;<a href="../index.html" title="up to the documentation top" 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