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120 lines
4.8 KiB
HTML
120 lines
4.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<html>
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<head>
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<title>The Standard Client</title>
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<title>Connecting to other Clusters</title>
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<meta name="Keywords" content="DX Cluster, DXSpider, Spider, Packet Cluster, DXCluster, Pavillion Software, AK1A, AX25, AX.25, WWV, Packet Radio, Amateur Radio, Propagation, DX, DXing, G1TLH, GB7TLH, Dirk Koopman, Mailing list, Linux, RedHat, PERL">
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<meta name="Description" content="Software and systems for realtime digital communications between amateur radio stations for the provision of information on propagation conditions and stations operating">
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<meta name="Author" content="Dirk Koopman G1TLH">
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</head>
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<body TEXT="#000000" LINK="#0000ff" VLINK="#800080" BGCOLOR="#FFFFFF">
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<FONT COLOR="#606060">
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<hr>
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<h2>The Standard Client</h2>
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<hr>
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</font>
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<address><a href="mailto:djk@tobit.co.uk">Dirk Koopman G1TLH</a></address>
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<p>
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<!-- Created: Sun Dec 13 20:25:14 GMT 1998 -->
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<!-- hhmts start -->
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Last modified: Mon Dec 21 12:26:18 GMT 1998
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<!-- hhmts end -->
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<h4>Introduction</h4>
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The standard client program is written in perl and lives in <tt>/spider/perl/client.pl</tt>.
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It performs the interface function
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between the cluster daemon (<tt>/spider/perl/cluster.pl</tt>) and
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AX25 or Telnet connections, both incoming and outgoing.
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<h4>client.pl</h4>
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The client itself is a rather rudimentary program which really only deals with
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things like line end conventions and noticing when a connection goes away. It is
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envisaged that at some time in the nearish future this program will be written in
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C and thus become considerably smaller. But, for the moment and whilst this area
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is under some development, it will remain in perl for ease of change.
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<P>The client can take up two arguments: a "callsign" and a connection type.
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<p>The "callsign" can have the following values:-
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<ol>
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<p><li>A real callsign (!).
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<P>For incoming connections it is important to make sure that
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the callsign passed <b>DOES NOT</b> have an SSID (use the %u
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or %U in <tt>ax25d.conf</tt>). The DXSpider system largely
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ignores what it regards as 'duplicate' callsigns (and that
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includes those with SSIDs) except in certain <a
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href="#special">special</a> cases.
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<P><li>The name of a <a href="connect.html">connect</a> script.
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<p><li><b>login</b> This will cause a unix like <tt>login:</tt> and
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<tt>password:</tt> phase to be run. With version 1.13 the password isn't
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checked unless there is a password recorded in the user file - but you have
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no means of recording a password! (unless you have created a local <tt>set/password</tt>
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command - please donate a copy it you have)
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<p>Also in 1.13 only existing users can enter via this means. This will probably
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change, but please discuss this in the <a href="../lists/dxspider-support/index.html">support</a>
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mailing list.
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</ol>
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<p>The connection type can be:-
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<ol>
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<p><li><b>ax25</b> This tells the client to use ax25 line conventions.
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<p><li><b>telnet</b> This tells the client to use normal unix line conventions.
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<p><li><b>connect</b> Start an outgoing <a href="connect.html">connect</a> script.
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Use the line conventions in that script.
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</ol>
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<p>The connection type can be missing in which case the default is unix line conventions.
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<p>If both the callsign and the connection are missing then it is
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assumed that the client is the sysop and uses the callsign set in
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your local copy of <a href="install.html#dxvar">DXVars.pm</a>.
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<h4>Considerations</h4>
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<a name="special"></a>As mentioned earlier, SSIDs are generally stripped from
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callsigns except in two cases:
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<ol>
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<p><li>For Cluster node callsigns. Although here in the UK we are issued with
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special callsigns to run cluster nodes and BBSs, this is not universal. Therefore
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by marking a callsign as a node you disable SSID checking. You will have to treat
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incoming cluster callsigns specially in <tt>ax25d.conf</tt> to use this feature (i.e
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you will have to set up a line specially for that callsign with a %s or %S for the
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callsign substitution [better just put the callsign you want!]).
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<p><li>The sysop callsign set up in your local copy of
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<a href="install.html#dxvar">DXVars.pm</a>. You must call <tt>client.pl</tt> with
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no parameters for this to work.
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</ol>
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<h4>Files</h4>
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The client only uses files when in the <b>login</b> phase. It
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prints the <tt>/spider/data/issue</tt> file, if it is present, to
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the user before issuing the <tt>login:</tt> prompt. After a callsign
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and password is entered it uses
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the standard cluster user file to check them.
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<!-- Standard Footer!! -->
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<p> </p>
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<p>
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<FONT COLOR="#606060"><hr></font>
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<font color="#FF0000" size=-2>
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Copyright © 1998 by Dirk Koopman G1TLH. All Rights Reserved<br>
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</font>
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<font color="#000000" size=-2>$Id$</font>
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</body>
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</html>
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