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    <title>A *retired index* of WWW Addressing Schemes</title>
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    <p>
<a href="../"><img border="0" alt="www" src="../Icons/WWW/w3c_home" /></a> | <a href="../Architecture/"> Architecture</a> | <a href="./">
    Addressing</a>
</p>

    <h1>Addressing Schemes (retired)</h1>

    <p align="center">
<a href="#bib">Refs</a> * <a href="#Registration">Registration</a> * <a href="#hack-schemes">Extensibility</a>
</p>

    <div class="intro">
    <p style='background:orange'><strong>This document is retired, see details below</strong></p>
    <p>This was an attempt to index URI schemes and their
    specifications, whether they were registered or not. As noted in
    <a
    href="http://lists.w3.org/Archives/Public/uri/2003Sep/0017.html">Sep
    2003 discussion</a>, it has become unwieldy to maintain and hence <strong> is retired</strong>.  If
    you're making up a new scheme, be sure you know about <a
    href="#Registration">scheme registration</a>.</p>

    <p>If you see an unregistered URI scheme, please contact the
    developer; feel free to bring it up in <a
    href="http://lists.w3.org/Archives/Public/uri/">the uri list</a>,
    and consider the <a
    href="http://esw.w3.org/topic/UriSchemes">UriSchemes</a> topic in
    the ESW Wiki as a place to collaborate on patterns of use and abuse in URI schemes.</p>

    <p>The stuff below is only here for historical purposes.</p>

    </div>


<hr />

    <p>
<a href="#unreg">*unreg</a> denotes an unregistered URI
    scheme. <a href="#Registration">Registration</a> and <a href="#hack-schemes">extensibility</a> are discussed below.</p>

    <p>see also: <a href="#ctech">automation details</a> below,
    separate <a href="scheme-notes">scheme notes</a>, including
    historial stuff</p>

    <p>86 schemes:</p>
<dl>
<dt>
<a name="IOR" id="IOR">IOR</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CBnpbbjcfnc">[CBnpbbjcfnc]</a></span></dd>
<dt>
<a name="about" id="about">about</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CndJvcpfnc1999">[CndJvcpfnc1999]</a></span></dd>
<dt><b><a name="acap" id="acap">acap</a></b></dt>
<dd>
<p>application configuration access protocol</p>
<span>spec: <a href="#CPppcnCnfgnc1997">[CPppcnCnfgnc1997]</a></span>
</dd>
<dt>
<a name="addbook" id="addbook">addbook</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<p>To add vCard entries to Communicator's Address Book</p>
<span>spec: <a href="#NcpDvdgnnFQC1999">[NcpDvdgnnFQC1999]</a></span><blockquote>@@argh! URIs are noun phrases, not verb phrases</blockquote>
</dd>
<dt>
<a name="afp" id="afp">afp</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#Dfnnffpfwvcc1998">[Dfnnffpfwvcc1998]</a></span></dd>
<dt>
<a name="afs" id="afs">afs</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>reserved by: <a href="#nnnddfcm">[nnnddfcm]</a></span></dd>
<dt>
<a name="aim" id="aim">aim</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#nnMngYm">[nnMngYm]</a></span></dd>
<dt>
<a name="callto" id="callto">callto</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#NMHwCNMngHyp1998">[NMHwCNMngHyp1998]</a></span></dd>
<dt>
<a name="castanet" id="castanet">castanet</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<p>Castanet Tuner URLs for Netcaster</p>
<span>spec: <a href="#NcpDvdgnnFQC1999">[NcpDvdgnnFQC1999]</a></span>
</dd>
<dt>
<a name="chttp" id="chttp">chttp</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#ngCnnfPy71999">[ngCnnfPy71999]</a></span></dd>
<dt><b><a name="cid" id="cid">cid</a></b></dt>
<dd>
<p>content identifier</p>
<span>spec: <a href="#CnnDndMgDnfm1997">[CnnDndMgDnfm1997]</a></span>
</dd>
<dt><b><a name="data" id="data">data</a></b></dt>
<dd>
<p>data</p>
<span>spec: <a href="#Dcm1998">[Dcm1998]</a></span><blockquote>
     originally proposed by Masinter on www-talk.; hmm.. use it in
     combination with a new MIME type for dates? e.g.
     data:text/date,1999-03-04T204208 test </blockquote>
</dd>
<dt><b><a name="dav" id="dav">dav</a></b></dt>
<dd>
<p>dav</p>
<span>spec: <a href="#HPxnnfDbdng1999">[HPxnnfDbdng1999]</a></span>
</dd>
<dt>
<a name="dict" id="dict">dict</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#DcnyvPc1997">[DcnyvPc1997]</a></span></dd>
<dt>
<a name="dns" id="dns">dns</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>spec: <a href="#bff">[bff]</a></span><span>spec: <a href="#DNcm2000">[DNcm2000]</a></span>
</dd>
<dt>
<a name="eid" id="eid">eid</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>spec: <a href="#dcm1998">[dcm1998]</a></span><blockquote>
     yikes! looks like a terrible idea! @@check to be sure the URI
     scheme guidelines say why </blockquote>
</dd>
<dt><b><a name="fax" id="fax">fax</a></b></dt>
<dd>
<p>fax</p>
<span>spec: <a href="#fpnC2000">[fpnC2000]</a></span>
</dd>
<dt><b><a name="file" id="file">file</a></b></dt>
<dd>
<p>Host-specific file names</p>
<span>spec: <a href="#nfmcc1994">[nfmcc1994]</a></span>
</dd>
<dt>
<a name="finger" id="finger">finger</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#fngpcfcn">[fngpcfcn]</a></span></dd>
<dt>
<a name="freenet" id="freenet">freenet</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>spec: <a href="#FndvFn`2000">[FndvFn`2000]</a></span><blockquote>Hmm...
     ``Unlike the Web, information on Freenet is not stored at
     fixed locations or subject to any kind of centralized control.''
     -- 1.1. What is Freenet? in the Freenet FAQ as of Aug 2000 .
     That's a property of http, ftp, etc., but not a property of
     the Web in general; e.g. it's not true of news: URIs.</blockquote>
<blockquote>in discussion in the freenet project: </blockquote>
</dd>
<dt><b><a name="ftp" id="ftp">ftp</a></b></dt>
<dd>
<p>File Transfer Protocol</p>
<span>spec: <a href="#FPFm1996">[FPFm1996]</a></span>
</dd>
<dt><b><a name="gopher" id="gopher">gopher</a></b></dt>
<dd>
<p>The Gopher Protocol</p>
<span>spec: <a href="#GpFm1996">[GpFm1996]</a></span>
</dd>
<dt>
<a name="gsm-sms" id="gsm-sms">gsm-sms</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#fGMMgvc1998">[fGMMgvc1998]</a></span></dd>
<dt>
<a name="h323" id="h323">h323</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>spec: <a href="#CnvnMmd1997">[CnvnMmd1997]</a></span><span>spec: <a href="#H323cmdfnn2001">[H323cmdfnn2001]</a></span>
</dd>
<dt>
<a name="h324" id="h324">h324</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CnvnMmd1997">[CnvnMmd1997]</a></span></dd>
<dt>
<a name="hdl" id="hdl">hdl</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CNndym">[CNndym]</a></span></dd>
<dt>
<a name="hnews" id="hnews">hnews</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#nwcm1998">[nwcm1998]</a></span></dd>
<dt><b><a name="http" id="http">http</a></b></dt>
<dd>
<p>Hypertext Transfer Protocol</p>
<span>spec: <a href="#HypxnfPcHP111999">[HypxnfPcHP111999]</a></span>
</dd>
<dt><b><a name="https" id="https">https</a></b></dt>
<dd>
<p>Hypertext Transfer Protocol Secure</p>
<span>spec: <a href="#HPvnPcVn301996">[HPvnPcVn301996]</a></span>
</dd>
<dt>
<a name="iioploc" id="iioploc">iioploc</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#npbNmngJnvdb1998">[npbNmngJnvdb1998]</a></span></dd>
<dt>
<a name="ilu" id="ilu">ilu</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#yp">[yp]</a></span></dd>
<dt><b><a name="imap" id="imap">imap</a></b></dt>
<dd>
<p>internet message access protocol</p>
<span>spec: <a href="#MPcm1997">[MPcm1997]</a></span><blockquote>
     access to MIME body parts is interesting, but..
     hmm.. it sure would be nice if IMAP could be used as a
     proxy service for mid: </blockquote>
</dd>
<dt>
<a name="ipp" id="ipp">ipp</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#nnPnngPcPPPP2001">[nnPnngPcPPPP2001]</a></span></dd>
<dt>
<a name="irc" id="irc">irc</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>spec: <a href="#MdfPCvcpc1996">[MdfPCvcpc1996]</a></span><blockquote>notes on integration of synchronous communication
     in the Web</blockquote>
</dd>
<dt>
<a name="jar" id="jar">jar</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#NwfJvPcHnd2000">[NwfJvPcHnd2000]</a></span></dd>
<dt>
<a name="javascript" id="javascript">javascript</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CndJvcpfnc1999">[CndJvcpfnc1999]</a></span></dd>
<dt>
<a name="jdbc" id="jdbc">jdbc</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#JvQP1999">[JvQP1999]</a></span></dd>
<dt><b><a name="ldap" id="ldap">ldap</a></b></dt>
<dd>
<p>Lightweight Directory Access Protocol</p>
<span>spec: <a href="#nDPFm1996">[nDPFm1996]</a></span>
</dd>
<dt>
<a name="lifn" id="lifn">lifn</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#nccfBkFDbn1994">[nccfBkFDbn1994]</a></span></dd>
<dt>
<a name="livescript" id="livescript">livescript</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CndJvcpfnc1999">[CndJvcpfnc1999]</a></span></dd>
<dt>
<a name="lrq" id="lrq">lrq</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CnvnMmd1997">[CnvnMmd1997]</a></span></dd>
<dt>
<a name="mailbox" id="mailbox">mailbox</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<p>Mail folder access</p>
<span>spec: <a href="#NcpDvdgnnFQC1999">[NcpDvdgnnFQC1999]</a></span>
</dd>
<dt><b><a name="mailto" id="mailto">mailto</a></b></dt>
<dd>
<p>Electronic mail address</p>
<p>Electronic mail address; The mailto URL scheme</p>
<span>spec: <a href="#mcm1998">[mcm1998]</a></span><blockquote>
     note that callto: and mailto: are misnomers. URIs are noun
     phrases. You can do other things with phone numbers than call
     them; for example, you could have a web page of your history
     with a caller pop up in response to the phone ringing (e.g.
     using caller id. (c) 1998 Jamie Zawinski &lt;jwz@jwz.org&gt; ) </blockquote>
</dd>
<dt>
<a name="md5" id="md5">md5</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#mncbxnpfXMDF1999">[mncbxnpfXMDF1999]</a></span></dd>
<dt><b><a name="mid" id="mid">mid</a></b></dt>
<dd>
<p>message identifier</p>
<span>spec: <a href="#CnnDndMgDnfm1997">[CnnDndMgDnfm1997]</a></span>
</dd>
<dt>
<a name="mocha" id="mocha">mocha</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CndJvcpfnc1999">[CndJvcpfnc1999]</a></span></dd>
<dt><b><a name="modem" id="modem">modem</a></b></dt>
<dd>
<p>modem</p>
<span>spec: <a href="#fpnC2000">[fpnC2000]</a></span>
</dd>
<dt><b><a name="news" id="news">news</a></b></dt>
<dd>
<p>USENET news</p>
<span>spec: <a href="#nwcm1998">[nwcm1998]</a></span>
</dd>
<dt><b><a name="nfs" id="nfs">nfs</a></b></dt>
<dd>
<p>network file system protocol</p>
<span>spec: <a href="#NFcm1997">[NFcm1997]</a></span>
</dd>
<dt><b><a name="nntp" id="nntp">nntp</a></b></dt>
<dd>
<p>USENET news using NNTP access</p>
<span>spec: <a href="#nfmcc1994">[nfmcc1994]</a></span>
</dd>
<dt><b><a name="opaquelocktoken" id="opaquelocktoken">opaquelocktoken</a></b></dt>
<dd>
<p>opaquelocktoken</p>
<span>spec: <a href="#HPxnnfDbdng1999">[HPxnnfDbdng1999]</a></span>
</dd>
<dt>
<a name="phone" id="phone">phone</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>spec: <a href="#fpny1998">[fpny1998]</a></span><blockquote>used in obsolete drafts</blockquote>
</dd>
<dt><b><a name="pop" id="pop">pop</a></b></dt>
<dd>
<p>Post Office Protocol v3</p>
<span>spec: <a href="#PPcm1998">[PPcm1998]</a></span>
</dd>
<dt>
<a name="pop3" id="pop3">pop3</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#PP3nfc1997">[PP3nfc1997]</a></span></dd>
<dt>
<a name="printer" id="printer">printer</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#Dfnnfpnfwvcc1999">[Dfnnfpnfwvcc1999]</a></span></dd>
<dt><b><a name="prospero" id="prospero">prospero</a></b></dt>
<dd>
<p>Prospero Directory Service</p>
<span>spec: <a href="#nfmcc1994">[nfmcc1994]</a></span>
</dd>
<dt>
<a name="res" id="res">res</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>spec: <a href="#Pc1998">[Pc1998]</a></span><blockquote>
     In every installation of win98, under
     C:\WINDOWS\WEB\Wallpaper you'll find a file called &quot;windows98.htm&quot;
     that contains the line:
     &lt;IMG SRC=&quot;res://membg.dll/membg.gif&quot; BORDER=0 WIDTH=329 HEIGHT=47&gt;</blockquote>
</dd>
<dt><b><a name="rtsp" id="rtsp">rtsp</a></b></dt>
<dd>
<p>real time streaming protocol</p>
<span>spec: <a href="#mmngPcP1998">[mmngPcP1998]</a></span>
</dd>
<dt>
<a name="rvp" id="rvp">rvp</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#ndzvPc1997">[ndzvPc1997]</a></span></dd>
<dt>
<a name="rwhois" id="rwhois">rwhois</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#Wnfmcc1997">[Wnfmcc1997]</a></span></dd>
<dt>
<a name="rx" id="rx">rx</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<p>Remote Execution</p>
<span>spec: <a href="#MbGnWb">[MbGnWb]</a></span>
</dd>
<dt>
<a name="sdp" id="sdp">sdp</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#DPcm1998">[DPcm1998]</a></span></dd>
<dt><b><a name="service" id="service">service</a></b></dt>
<dd>
<p>service location</p>
<span>spec: <a href="#vcmpndvccm1999">[vcmpndvccm1999]</a></span>
</dd>
<dt><b><a name="sip" id="sip">sip</a></b></dt>
<dd>
<p>session initiation protocol</p>
<span>spec: <a href="#Pcm1997">[Pcm1997]</a></span>
</dd>
<dt>
<a name="smb" id="smb">smb</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#ynxfmbby2000">[ynxfmbby2000]</a></span></dd>
<dt>
<a name="snews" id="snews">snews</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<p>For NNTP postings via SSL</p>
<span>spec: <a href="#NcpDvdgnnFQC1999">[NcpDvdgnnFQC1999]</a></span>
</dd>
<dt><b><a name="soap.beep" id="soap.beep">soap.beep</a></b></dt>
<dd><p>soap.beep</p></dd>
<dt><b><a name="soap.beeps" id="soap.beeps">soap.beeps</a></b></dt>
<dd><p>soap.beeps</p></dd>
<dt>
<a name="t120" id="t120">t120</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CnvnMmd1997">[CnvnMmd1997]</a></span></dd>
<dt>
<a name="tcp" id="tcp">tcp</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#bff">[bff]</a></span></dd>
<dt><b><a name="tel" id="tel">tel</a></b></dt>
<dd>
<p>telephone</p>
<span>spec: <a href="#fpnC2000">[fpnC2000]</a></span>
</dd>
<dt>
<a name="telephone" id="telephone">telephone</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<span>reserved by: <a href="#fpnC2000">[fpnC2000]</a></span><blockquote>used in previous drafts</blockquote>
</dd>
<dt><b><a name="telnet" id="telnet">telnet</a></b></dt>
<dd>
<p>Reference to interactive sessions</p>
<span>spec: <a href="#nfmcc1994">[nfmcc1994]</a></span>
</dd>
<dt><b><a name="tip" id="tip">tip</a></b></dt>
<dd>
<p>Transaction Internet Protocol</p>
<span>spec: <a href="#ncnnnPcVn301998">[ncnnnPcVn301998]</a></span>
</dd>
<dt>
<a name="tn3270" id="tn3270">tn3270</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>reserved by: <a href="#nfmcc1994">[nfmcc1994]</a></span></dd>
<dt>
<a name="tv" id="tv">tv</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#nfmccfvnBdc1997">[nfmccfvnBdc1997]</a></span></dd>
<dt><b><a name="urn" id="urn">urn</a></b></dt>
<dd>
<p>Uniform Resource Names</p>
<span>spec: <a href="#Nynx1997">[Nynx1997]</a></span>
</dd>
<dt>
<a name="uuid" id="uuid">uuid</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#Dddngcm1997">[Dddngcm1997]</a></span></dd>
<dt><b><a name="vemmi" id="vemmi">vemmi</a></b></dt>
<dd>
<p>versatile multimedia interface</p>
<span>spec: <a href="#VMMpcfcn1997">[VMMpcfcn1997]</a></span>
</dd>
<dt>
<a name="videotex" id="videotex">videotex</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#Vdxpcfcn1997">[Vdxpcfcn1997]</a></span></dd>
<dt>
<a name="view-source" id="view-source">view-source</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#CndJvcpfnc1999">[CndJvcpfnc1999]</a></span></dd>
<dt><b><a name="wais" id="wais">wais</a></b></dt>
<dd>
<p>Wide Area Information Servers</p>
<span>spec: <a href="#nfmcc1994">[nfmcc1994]</a></span>
</dd>
<dt>
<a name="whodp" id="whodp">whodp</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd><span>spec: <a href="#WDPWdyHdbjcD1998">[WDPWdyHdbjcD1998]</a></span></dd>
<dt>
<a name="whois++" id="whois++">whois++</a><a href="#unreg"><b><small>*unreg</small></b></a>
</dt>
<dd>
<p>Distributed directory service.</p>
<span>spec: <a href="#WHpcfcn1997">[WHpcfcn1997]</a></span>
</dd>
<dt><b><a name="z39.50r" id="z39.50r">z39.50r</a></b></dt>
<dd>
<p>Z39.50 Retrieval</p>
<span>spec: <a href="#nfmccfZ39501996">[nfmccfZ39501996]</a></span>
</dd>
<dt><b><a name="z39.50s" id="z39.50s">z39.50s</a></b></dt>
<dd>
<p>Z39.50 Session</p>
<span>spec: <a href="#nfmccfZ39501996">[nfmccfZ39501996]</a></span>
</dd>
</dl>

    <h2><a name="bib">References</a></h2>

    <dl>
<dt><small>[<a name="nnPnngPcPPPP2001" id="nnPnngPcPPPP2001">nnPnngPcPPPP2001</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-ietf-ipp-url-scheme-02.txt">Internet Printing Protocol (IPP): IPP URL Scheme</a></cite>. Internet Draft issued 2001-02-13. </dd>
<dt><small>[<a name="H323cmdfnn2001" id="H323cmdfnn2001">H323cmdfnn2001</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-levin-iptel-h323-url-scheme-02.txt">H.323 URL scheme definition</a></cite>. Internet Draft issued 2001-02. </dd>
<dt><small>[<a name="ynxfmbby2000" id="ynxfmbby2000">ynxfmbby2000</a>]</small></dt>
<dd>
<cite><a href="http://kt.linuxcare.com/samba/sm20010115_38.epl#1">URI syntax for smb library</a></cite>. John Quirk, 2000-12-26. </dd>
<dt><small>[<a name="DNcm2000" id="DNcm2000">DNcm2000</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-josefsson-dns-url-00.txt">DNS URL scheme</a></cite>. S. Josefsson, Internet Draft issued 2000-11-24. </dd>
<dt><small>[<a name="NwfJvPcHnd2000" id="NwfJvPcHnd2000">NwfJvPcHnd2000</a>]</small></dt>
<dd>
<cite><a href="http://developer.java.sun.com/developer/onlineTraining/protocolhandlers/">A New Era for Java Protocol Handlers</a></cite>. Brian Maso, 2000-08. </dd>
<dt><small>[<a name="FndvFn`2000" id="FndvFn`2000">FndvFn`2000</a>]</small></dt>
<dd>
<cite><a href="http://www.geocrawler.com/archives/3/928/2000/5/0/3709421/">[Freenet-dev] Freenet URL`s</a></cite>. Lawrence W. Leung, (no dc:type found)2000-05-08T10:03:20. </dd>
<dt><small>[<a name="fpnC2000" id="fpnC2000">fpnC2000</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/rfc/rfc2806.txt">URLs for Telephone Calls</a></cite>. A. Vaha-Sipila, Internet RFC 2806 issued 2000-04. </dd>
<dt><small>[<a name="mncbxnpfXMDF1999" id="mncbxnpfXMDF1999">mncbxnpfXMDF1999</a>]</small></dt>
<dd>
<cite><a href="http://www.w3.org/DesignIssues/Toolbox">The Semantic Toolbox - on top of XML-RDF - Ideas on Web Architecture</a></cite>. Tim BL, 1999-06-18. </dd>
<dt><small>[<a name="HypxnfPcHP111999" id="HypxnfPcHP111999">HypxnfPcHP111999</a>]</small></dt>
<dd>
<cite><a href="http://www.w3.org/Protocols/rfc2616/rfc2616">Hypertext Transfer Protocol -- HTTP/1.1</a></cite>. J. Gettys, J. Mogul, H. Frystyk, L. Masinter, P. Leach, T. Berners-Lee, Internet RFC 2616 issued 1999-06. </dd>
<dt><small>[<a name="CndJvcpfnc1999" id="CndJvcpfnc1999">CndJvcpfnc1999</a>]</small></dt>
<dd>
<cite><a href="http://developer.netscape.com/docs/manuals/js/client/jsref/index.htm">Client-Side JavaScript Reference</a></cite>. Netscape Communications Corporation, 1999-05-28. </dd>
<dt><small>[<a name="Dfnnfpnfwvcc1999" id="Dfnnfpnfwvcc1999">Dfnnfpnfwvcc1999</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-ietf-svrloc-printer-scheme-03.txt">Definition of printer: URLs for use with Service Location</a></cite>. St. Pierre, Isaccson, McDonald, Internet Draft issued 1999-02-19. </dd>
<dt><small>[<a name="vcmpndvccm1999" id="vcmpndvccm1999">vcmpndvccm1999</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-ietf-svrloc-service-scheme-14.txt">Service Templates and service: Schemes</a></cite>. Guttman, Perkins, Kempf, Internet Draft issued 1999-02-05. <blockquote>formerly: The service: URL Scheme, Guttman, 22 Nov 1996.</blockquote>
</dd>
<dt><small>[<a name="HPxnnfDbdng1999" id="HPxnnfDbdng1999">HPxnnfDbdng1999</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/rfc/rfc2518.txt">HTTP Extensions for Distributed Authoring</a></cite>. Goland, et. al, Internet RFC 2518 issued 1999-02. </dd>
<dt><small>[<a name="CHPCcngPc1999" id="CHPCcngPc1999">CHPCcngPc1999</a>]</small></dt>
<dd>
<cite><a href="http://www.realnetworks.com/devzone/rp7auth/2.html">The CHTTP Caching Protocol</a></cite>. (no dc:type found)1999. </dd>
<dt><small>[<a name="NcpDvdgnnFQC1999" id="NcpDvdgnnFQC1999">NcpDvdgnnFQC1999</a>]</small></dt>
<dd>
<cite><a href="http://developer.netscape.com/support/faqs/champions/client_tech.html">Netscape DevEdge Online FAQ - Client Technical</a></cite>. Netscape Communications Corporation, (no dc:type found)1999. </dd>
<dt><small>[<a name="ngCnnfPy71999" id="ngCnnfPy71999">ngCnnfPy71999</a>]</small></dt>
<dd>
<cite><a href="http://www.realnetworks.com/devzone/rp7auth/index.html">Authoring Content for RealPlayer 7</a></cite>. RealNetworks, Inc., 1999. </dd>
<dt><small>[<a name="JvQP1999" id="JvQP1999">JvQP1999</a>]</small></dt>
<dd>
<cite><a href="http://www.javasoft.com/products/jdk/1.1/docs/api/Package-java.sql.html">Java SQL API</a></cite>. Sun Microsystems, Inc., 1999. </dd>
<dt><small>[<a name="fGMMgvc1998" id="fGMMgvc1998">fGMMgvc1998</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-antti-gsm-sms-url-03.txt">URLs for GSM Short Message Service</a></cite>. Vaha-Sipila, Internet Draft issued 1998-12-09. </dd>
<dt><small>[<a name="dcm1998" id="dcm1998">dcm1998</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-finseth-eid-url-scheme-00.txt">The &quot;eid&quot; URL Scheme</a></cite>. Finseth, Internet Draft issued 1998-11-02. </dd>
<dt><small>[<a name="Dfnnffpfwvcc1998" id="Dfnnffpfwvcc1998">Dfnnffpfwvcc1998</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-ietf-svrloc-afp-service-01.txt">Definition of afp: URLs for use with Service Location</a></cite>. Wallace, Internet Draft issued 1998-10-30. </dd>
<dt><small>[<a name="npbNmngJnvdb1998" id="npbNmngJnvdb1998">npbNmngJnvdb1998</a>]</small></dt>
<dd>
<cite><a href="http://www.omg.org/cgi-bin/doc?orbos/98-10-11">Interoperable Naming Joint Revised Submission</a></cite>. orbos, 1998-10-11. </dd>
<dt><small>[<a name="DPcm1998" id="DPcm1998">DPcm1998</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-fujikawa-sdp-url-01.txt">SDP URL Scheme</a></cite>. FUJIKAWA, KURIYA, Internet Draft issued 1998-08-07. </dd>
<dt><small>[<a name="Dcm1998" id="Dcm1998">Dcm1998</a>]</small></dt>
<dd>
<cite><a href="ftp://ftp.isi.edu/in-notes/rfc2397.txt">Data: URL scheme</a></cite>. L. Masinter, Internet RFC 2397 issued 1998-08. </dd>
<dt><small>[<a name="PPcm1998" id="PPcm1998">PPcm1998</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/rfc2384.txt">POP URL Scheme</a></cite>. R. Gellens., Internet RFC 2384 issued 1998-08. </dd>
<dt><small>[<a name="ncnnnPcVn301998" id="ncnnnPcVn301998">ncnnnPcVn301998</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/rfc/rfc2371.txt">Transaction Internet Protocol Version 3.0</a></cite>. Lyon, J., Evans, K., J. Klein, Internet RFC 2371 issued 1998-07. </dd>
<dt><small>[<a name="mcm1998" id="mcm1998">mcm1998</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/rfc2368.txt">The mailto URL scheme</a></cite>. P. Hoffman, L. Masinter, J. Zawinski, Internet RFC 2368 issued 1998-07. </dd>
<dt><small>[<a name="nwcm1998" id="nwcm1998">nwcm1998</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-stockwell-hnews-url-00.txt">The hnews URL scheme</a></cite>. T. Stockwell, Internet Draft issued 1998-06-17. </dd>
<dt><small>[<a name="Pc1998" id="Pc1998">Pc1998</a>]</small></dt>
<dd>
<cite><a href="http://msdn.microsoft.com/workshop/networking/predefined/res.asp">Res Protocol</a></cite>. Microsoft Corporation, 1998-06-11. </dd>
<dt><small>[<a name="NMHwCNMngHyp1998" id="NMHwCNMngHyp1998">NMHwCNMngHyp1998</a>]</small></dt>
<dd>
<cite><a href="http://support.microsoft.com/support/kb/articles/q157/2/77.asp">NM: How to Create a NetMeeting Hyperlink on a Web Page</a></cite>. Microsoft Corporation, Microsoft Knowledge Base article 1998-04-22. </dd>
<dt><small>[<a name="mmngPcP1998" id="mmngPcP1998">mmngPcP1998</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/rfc/rfc2326.txt">Real Time Streaming Protocol (RTSP)</a></cite>. Schulzrinne, H., Rao, A., R. Lanphier, Internet RFC 2326 issued 1998-04. </dd>
<dt><small>[<a name="nwcm1998" id="nwcm1998">nwcm1998</a>]</small></dt>
<dd>
<cite><a href="http://www.access.digex.net/~asgilman/uri/news/draft-gilman-news-url-02.txt">The 'news' URL scheme</a></cite>. Gilman, Internet Draft issued 1998-03-09. </dd>
<dt><small>[<a name="WDPWdyHdbjcD1998" id="WDPWdyHdbjcD1998">WDPWdyHdbjcD1998</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/internet-drafts/draft-mohr-whodp-00.txt">WhoDP: Widely Hosted Object Data Protocol</a></cite>. Gordon Mohr, Internet Draft issued 1998-03-02. </dd>
<dt><small>[<a name="fpny1998" id="fpny1998">fpny1998</a>]</small></dt>
<dd>
<cite><a href="http://info.internet.isi.edu/in-drafts/files/draft-antti-telephony-url-04.txt">URLs for Telephony</a></cite>. A. Vaha-Sipila, Nokia, Internet Draft issued 1998-02-23. </dd>
<dt><small>[<a name="CnvnMmd1997" id="CnvnMmd1997">CnvnMmd1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-cordell-sg16-conv-url-00.txt">Conversational Multimedia URLs</a></cite>. Cordell, Internet Draft issued 1997-12-16. </dd>
<dt><small>[<a name="ndzvPc1997" id="ndzvPc1997">ndzvPc1997</a>]</small></dt>
<dd>
<cite><a href="http://www.es.net/pub/internet-drafts/draft-calsyn-rvp-00.txt">Rendezvous Protocol</a></cite>. Martin Calsyn, Microsoft Corporation, Internet Draft issued 1997-11-21. </dd>
<dt><small>[<a name="CPppcnCnfgnc1997" id="CPppcnCnfgnc1997">CPppcnCnfgnc1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/rfc/rfc2244.txt">ACAP -- Application Configuration Access Protocol</a></cite>. J. Myers, Newman, C., Internet RFC 2244 issued 1997-11. </dd>
<dt><small>[<a name="Dddngcm1997" id="Dddngcm1997">Dddngcm1997</a>]</small></dt>
<dd>
<cite><a href="http://ds.internic.net/internet-drafts/draft-kindel-uuid-uri-00.txt">the UUID addressing scheme</a></cite>. Charlie Kindel, Internet Draft issued 1997-11. </dd>
<dt><small>[<a name="DcnyvPc1997" id="DcnyvPc1997">DcnyvPc1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/rfc/rfc2229.txt">A Dictionary Server Protocol</a></cite>. R. Faith, B. Martin, Internet RFC 2229 issued 1997-10. </dd>
<dt><small>[<a name="NFcm1997" id="NFcm1997">NFcm1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/rfc2224.txt">NFS URL Scheme</a></cite>. B. Callaghan, Internet RFC 2224 issued 1997-10. </dd>
<dt><small>[<a name="MPcm1997" id="MPcm1997">MPcm1997</a>]</small></dt>
<dd>
<cite><a href="http://www.isi.edu/in-notes/rfc2192.txt">IMAP URL scheme</a></cite>. C. Newman, Internet RFC 2192 issued 1997-09. </dd>
<dt><small>[<a name="Wnfmcc1997" id="Wnfmcc1997">Wnfmcc1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-mealling-rwhoisurl-01.txt">The RWhois Uniform Resource Locator</a></cite>. S. Williamson, M. Mealling, Internet Draft issued 1997-08-02. </dd>
<dt><small>[<a name="nfmccfvnBdc1997" id="nfmccfvnBdc1997">nfmccfvnBdc1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-zigmond-tv-url-00.txt">Uniform Resource Locators for Television Broadcasts</a></cite>. D. Zigmond., Internet Draft issued 1997-06-10. </dd>
<dt><small>[<a name="Vdxpcfcn1997" id="Vdxpcfcn1997">Vdxpcfcn1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-mavrakis-videotex-url-spec-01.txt">Videotex URL Specification</a></cite>. D. Mavrakis, H. Layec, K. Kartmann., Internet Draft issued 1997-05-20. </dd>
<dt><small>[<a name="Pcm1997" id="Pcm1997">Pcm1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-ietf-mmusic-sip-url-00.txt">SIP URL Scheme</a></cite>. H. Schulzrinne, Internet Draft issued 1997-05-14. </dd>
<dt><small>[<a name="WHpcfcn1997" id="WHpcfcn1997">WHpcfcn1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-ietf-asid-whois-url-01.txt">WHOIS++ URL Specification</a></cite>. Internet Draft issued 1997-05. </dd>
<dt><small>[<a name="Nynx1997" id="Nynx1997">Nynx1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ietf.org/rfc/rfc2141.txt">URN Syntax.</a></cite>. Ryan Moats, Internet RFC 2141 issued 1997-05. </dd>
<dt><small>[<a name="CnnDndMgDnfm1997" id="CnnDndMgDnfm1997">CnnDndMgDnfm1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/rfc2111.txt">Content-ID and Message-ID Uniform Resource Locators</a></cite>. E. Levinson, E. Levinson., Internet RFC 2111 issued 1997-03. </dd>
<dt><small>[<a name="VMMpcfcn1997" id="VMMpcfcn1997">VMMpcfcn1997</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/rfc2122.txt">VEMMI URL Specification</a></cite>. D. Mavrakis, H. Layec, K. Kartmann., Internet RFC 2122 issued 1997-03. </dd>
<dt><small>[<a name="PP3nfc1997" id="PP3nfc1997">PP3nfc1997</a>]</small></dt>
<dd>
<cite><a href="http://search.ietf.org/internet-drafts/draft-earhart-url-pop3-00.txt">A POP3 URL Interface</a></cite>. Earhart, Internet Draft issued 1997-01. </dd>
<dt><small>[<a name="GpFm1996" id="GpFm1996">GpFm1996</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-murali-url-gopher.txt">A Gopher URL Format</a></cite>. Casey, Krishnan, Internet Draft issued 1996-12-04. </dd>
<dt><small>[<a name="FPFm1996" id="FPFm1996">FPFm1996</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-casey-url-ftp-00.txt">A FTP URL Format</a></cite>. Casey, Internet Draft issued 1996-11-26. </dd>
<dt><small>[<a name="HPvnPcVn301996" id="HPvnPcVn301996">HPvnPcVn301996</a>]</small></dt>
<dd>
<cite><a href="http://home.netscape.com/eng/ssl3/ssl-toc.html">HTTP over SSL (in The SSL Protocol Version 3.0)</a></cite>. Freier, Karlton, Kocher, Netscape, (no dc:type found)1996-11-18. </dd>
<dt><small>[<a name="nfmccfZ39501996" id="nfmccfZ39501996">nfmccfZ39501996</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/rfc2056.txt">Uniform Resource Locators for Z39.50</a></cite>. R. Denenberg, J. Kunze, D. Lynch., Internet RFC 2056 issued 1996-11. </dd>
<dt><small>[<a name="MdfPCvcpc1996" id="MdfPCvcpc1996">MdfPCvcpc1996</a>]</small></dt>
<dd>
<cite><a href="http://www.w3.org/Addressing/draft-mirashi-url-irc-01.txt">Mirashi draft@@ (also: PICS service) spec</a></cite>. Internet Draft issued 1996-08-26. </dd>
<dt><small>[<a name="nDPFm1996" id="nDPFm1996">nDPFm1996</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/rfc1959.txt">An LDAP URL Format</a></cite>. LDAP-WG, T. Howes, M. Smith, Internet RFC 1959 issued 1996-06. </dd>
<dt><small>[<a name="nfmcc1994" id="nfmcc1994">nfmcc1994</a>]</small></dt>
<dd>
<cite><a href="http://www.w3.org/Addressing/rfc1738.txt">Uniform Resource Locators (URL)</a></cite>. T. Berners-Lee, L. Masinter, M. McCahill, Internet RFC 1738 issued 1994-12. </dd>
<dt><small>[<a name="nccfBkFDbn1994" id="nccfBkFDbn1994">nccfBkFDbn1994</a>]</small></dt>
<dd>
<cite><a href="http://www.ics.uci.edu/pub/ietf/uri/draft-moore-bfd-arch-01.txt">An Architecture for Bulk File Distribution</a></cite>. Internet Draft issued 1994-07-27. </dd>
<dt><small>[<a name="nnMngYm" id="nnMngYm">nnMngYm</a>]</small></dt>
<dd>
<cite><a href="file:/home/connolly/w3ccvs/WWW/Addressing/#_g172">AOL Instant Messenger: Test Your Remote</a></cite>. (no dc:type found). </dd>
<dt><small>[<a name="nnnddfcm" id="nnnddfcm">nnnddfcm</a>]</small></dt>
<dd>
<cite><a href="ftp://ftp.isi.edu/in-notes/iana/assignments/url-schemes">Internet Standard list of url schemes</a></cite>. (no dc:type found). </dd>
<dt><small>[<a name="CNndym" id="CNndym">CNndym</a>]</small></dt>
<dd>
<cite><a href="http://www.handle.net/">CNRI handle system</a></cite>. (no dc:type found). </dd>
<dt><small>[<a name="bff" id="bff">bff</a>]</small></dt>
<dd>
<cite><a href="http://www.rebol.com/users/valurl.html">rebol URL stuff</a></cite>. (no dc:type found). </dd>
<dt><small>[<a name="fngpcfcn" id="fngpcfcn">fngpcfcn</a>]</small></dt>
<dd>
<cite><a href="ftp://ds.internic.net/internet-drafts/draft-ietf-uri-url-finger-03.txt">finger URL Specification</a></cite>. IETF URI Working Group, Internet Draft issued . </dd>
<dt><small>[<a name="yp" id="yp">yp</a>]</small></dt>
<dd>
<cite><a href="ftp://ftp.parc.xerox.com/pub/ilu/2.0/20a8-manual-html/manual_1.html#SEC10">ILU types</a></cite>. (no dc:type found). </dd>
<dt><small>[<a name="CBnpbbjcfnc" id="CBnpbbjcfnc">CBnpbbjcfnc</a>]</small></dt>
<dd>
<cite><a href="http://www.omg.org/corba2/inarch.htm#3674">CORBA interoperable object reference</a></cite>. . </dd>
<dt><small>[<a name="MbGnWb" id="MbGnWb">MbGnWb</a>]</small></dt>
<dd>
<cite><a href="http://www.w3.org/People/danield/papers/mobgui/">Mobile GUI On The Web</a></cite>. Daniel Dardailler, (no dc:type found). </dd>
<dt><small>[<a name="FqnykdQnM" id="FqnykdQnM">FqnykdQnM</a>]</small></dt>
<dd>
<cite><a href="http://www.aol.com/aim/faq/urls.html">Frequently Asked Questions: AIM URLs</a></cite>. (no dc:type found). </dd>
</dl>

    <h2>
<a id="Registration" name="Registration">Registration</a>
    of naming schemes</h2>

    <p>The <a href="http://www.iana.org/assignments/uri-schemes.html">
    Internet Standard list of URI schemes</a> is maintained by <a href="http://www.iana.org/">IANA</a> according to <a href="http://www.ietf.org/rfc/rfc2717.txt">RFC2717</a>.
    This dates back to...</p>

    <blockquote>
      A new naming scheme may be introduced by defining a mapping
      onto a conforming URL syntax, using a new prefix. [...]

      <p>It is proposed that the Internet Assigned Numbers
      Authority (IANA) perform the function of registration of new
      schemes.</p>

      <address>
        <a href="rfc1630.txt">RFC 1630 URIs in WWW, June 1994</a>
      </address>
    </blockquote>

    <p>I periodically look at <a href="http://search.ietf.org:80/search/cgi-bin/BrokerQuery.pl.cgi?broker=internet-drafts&amp;query=URL+scheme&amp;caseflag=on&amp;wordflag=off&amp;errorflag=0&amp;maxlineflag=50&amp;maxresultflag=1000&amp;descflag=on&amp;sort=by-NML&amp;verbose=on&amp;maxobjflag=25">
    Internet Drafts containing &quot;URL scheme&quot;</a> and the <a href="http://www.ics.uci.edu/pub/ietf/uri/">URI spec
    materials</a> maintained by Roy Fielding to find new
    schemes.</p>

    <h3><a name="unreg">Unregistered Schemes</a></h3>

    <p>
<em>Unregistered schemes should not be deployed widely and
    should not be used except experimentally.</em> If you are
    designing a URI scheme, please see <a href="http://www.ietf.org/rfc/rfc2718.txt">Guidelines for new URL
    Schemes</a>, November 1999.
    </p>

    <blockquote>
      To the question &quot;how many private URL schemes are there?,&quot; the
      answer was given that there were perhaps 20-40 in use at
      Microsoft, with 2-3 being added a day; WebTV has 24, with 6/year
      added. Maybe others have similar number of schemes.

      <address>
        -- <a href="http://www.ietf.org/proceedings/97aug/transit97aug-30.htm#TopOfPage">
         minutes</a> of the Uniform Resource Locator Registration
        Procedures (urlreg) WG meeting at the <a href="http://www.ietf.org/proceedings/97aug/toc-97aug.html">
        39th IETF Meeting</a> in Munich, Bavaria, Germany, Aug 1997
      </address>
    </blockquote>

    <p>@@pointer to complaint about unregistered schemes in
    Mozilla.</p>

    <h2><a id="hack-schemes" name="hack-schemes">How to Add URI
    Schemes to Your Desktop</a></h2>

    <blockquote>
      It is recommended that those proposing a new scheme
      demonstrate its utility and operability by the provision of a
      gateway which will provide images of objects in the new
      scheme for clients using an existing protocol. If the new
      scheme is not a locator scheme, then the properties of names
      in the new space should be clearly defined. It is likewise
      recommended that, where a protocol allows for retrieval by
      URL, that the client software have provision for being
      configured to use specific gateway locators for indirect
      access through new naming schemes.

      <address>
        <a href="rfc1630.txt">RFC 1630 URIs in WWW June 1994</a>
      </address>
    </blockquote>

    <p>The two on <a href="http://www.w3.org/People/Connolly/drafts/web-research.html">
     my personal to-do list</a> are <a href="schemes.html#mid">
    mid</a>: and <a href="schemes.html#irc">irc</a>:.</p>

    <p>@@how did Mosaic, viola, and Midas handle this? @@cite
    libwww API for adding new schemes, @@cite relevant Java APIs.
    Mac?</p>

    <h3><a id="nswin-url-hack" name="nswin-url-hack">Netscape on
    Windows</a></h3>

    <blockquote>
      5.3: Can I register my own protocol with Navigator?

      <p>It is possible to use NCAPI to register your own protocol.
      For instance, if you want to have all calls to
      &quot;mySuperProtocol:&quot; handled by your application, you should
      use NCAPI methods to get that functionality. However, it is
      not possible to register a viewer protocol on the Unix
      platform releases of Navigator.</p>

      <address>
        -- <a href="http://developer.netscape.com:80/support/faqs/champions/client_tech.html#5-3">
         DevEdge Newsgroup FAQ</a>
      </address>
    </blockquote>

    <p>an 1999: Netscape Navigator has long lacked extensibility in
    URI schemes, and it has had broken parsing. But the <a href="http://www.mozilla.org/">Mozilla</a> folks are working on
    it. See <a href="http://bugzilla.mozilla.org/show_bug.cgi?id=2110">bug
    2110</a>.</p>

    <h3><a id="ie-scheme-hack" name="ie-scheme-hack">Windows
    Internet Explorer</a></h3>

    <blockquote>
      <address>
        excerpt from <a href="http://www.microsoft.com/msdn/sdk/inetsdk/help/itt/pluggable/appendix_a.htm">
         Appendix A: Registering an Application to a URL
        Protocol</a> in <a href="http://www.microsoft.com/msdn/sdk/inetsdk/help/">
        Internet Client SDK</a>
      </address>

      <p>The following example shows which registry values must be
      added to register a new application (notepad.exe in this
      example) to handle a new URL protocol (note:).</p>
<pre>
[HKEY_CLASSES_ROOT]
    [note]
        (Default) = &quot;URL:Note Protocol&quot;
        URL Protocol = &quot;&quot;
        [DefaultIcon]
            (Default) = &quot;notepad.exe&quot;
        [shell]
            [open]
                [command]
                    (Default) = &quot;c:\windows\notepad.exe %1&quot;
</pre>

      <p>By adding these settings to the registry, attempts to
      navigate to URLs such as note:c:\myfile.txt would launch
      Notepad to edit the file c:\myfile.txt. Of course, all the
      commands supported under Shell\Open are supported, including
      DDEEXEC (in other words, &quot;command&quot; is not the only key you
      can put under the verb).</p>
    </blockquote>

    <hr class=""/>

   <h2><a name="ctech">Colophon/TODO</a></h2>
   <p>I recently (Mar 2001) made this index into a <a href="../2000/01/sw/">semantic web development</a> project, with the help of <a href="http://purl.org/net/sbp/">Sean Palmer</a> and <a href="http://www.aaronsw.com">Aaron Swartz</a> see:</p>
   <ul>
   <li><a href="schemes.n3">RDF/n3 source</a></li>
   <li>
<a href="scheme-registry-rules.n3">rules about the IANA scheme registry</a> and <a href="http://blogspace.com/rdf/iana-uri-schemes">aaron's automated transcription of it</a>; <a href="http://blogspace.com/rdf/iana-uri-schemes.tcl.txt">tcl/aolserver source</a>
</li>
   <li><a href="schemes.rdf">generated RDF/xml</a></li>
   <li><a href="schemes-gen.html">HTML template</a></li>
   <li>
<a href="schemesIndex.xsl">transformation</a>  that builds the index from the HTML template and the RDF knowledge base</li>
   <li>
<a href="Makefile">Makefile</a> that shows how the pieces are glued together, <a href="makeDiagram.svg">SVG diagram of Makefile</a>
</li>
   </ul>
   <h3>TODO</h3>
   <ol>
   <li>make dublin core bibliography formatting available separately from the resto of the stuff that <a href="schemesIndex.xsl">the transformation</a> does</li>
   <li>merge RFC title/date/author/etc. stuff in from rfc-index;
	  merge endorsement info from STD1?
   <p>should refine dc:date to dc:issued for RFCs and internet drafts; infer dc:date using cwm/AlgyKB</p>
</li>
   </ol>
   <p>and someday...</p>
   <ul>
   <li>IDEA: :implements and :uses as well as :specifies; i.e. give pointers to implementations of the schemes and documents/resources that use them, as well as specs</li>
   <li>rdfs:seeAlso, :reserves</li>
   <li>handle copyright year, who better</li>
   <li>IDEA (discussed with EricP in MN 21Mar2001): enhance
   XSLT processors to grok arbitrary RDF and make it look
   like bySubject/frameHappy RDF.
   <p>also, do back-chaining
   on xpaths, so that when I ask for */dc:creator, I
   get subproperties too.</p>
   <p>aha... I'm not alone in wishing for this... see
<a href="http://zoe.mathematik.Uni-Osnabrueck.DE/QAT/Transform/RDFTransform/node5.html">RDFT</a>, Stefan Kokkelink 2001-03-19 </p>
</li>
   <li>dublin core types (done, to some extent)</li>
   </ul>

   <p>dublin core feedback: dca:agentName is redundant; just dca:name, pls.</p>

    <address>
      <a href="../People/Connolly/">Dan Connolly</a><br />
       created 1996/01/02 03:37:23<br />
       $Revision: 1.95 $ of $Date: 2007/04/06 16:20:54 $
    </address>
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