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         Executes SQL statements</a><br>
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      <hr>
      <h3><a name="server-client-examples">B.16.2 Client Examples</a></h3>
      <p>Here are some examples of URLs which can be retrieved from
         a server which is running at the base URL 
         <code>http://localhost:2112/stilts/</code>.
         All these use the HTTP GET form of request; the POST form could be
         used instead with the same effect.
         
         <dl>
            <dt><strong><pre>
http://localhost:2112/stilts/
</pre></strong></dt>
            <dd>Returns an HTML page giving version information and some links to
               example usages of the server.
               
            </dd>
            <dt><strong><pre>
http://localhost:2112/stilts/task/tpipe
</pre></strong></dt>
            <dd>Returns an HTML page giving usage instructions for the 
               <a href="tpipe.html"><code>tpipe</code></a> task.
               
            </dd>
            <dt><strong><pre>
http://localhost:2112/stilts/task/calc?expression=21%2b2
</pre></strong></dt>
            <dd>Invokes the <a href="calc.html"><code>calc</code></a> task
               to return a document containing the text "<code>23</code>".
               Note that the plus ("<code>+</code>") sign in the expression has to be
               encoded using the sequence "<code>%2b</code>" since "<code>+</code>"
               has a special significance in query URLs - see for instance sec 2.2 of 
               <a href="http://www.ietf.org/rfc/rfc1738.txt">RFC 1738</a>.
               
            </dd>
            <dt><strong><pre>
http://localhost:2112/stilts/task/plot2d?in=/data/table1.vot&xdata=RMAG&ydata=BMAG
</pre></strong></dt>
            <dd>Invokes the <a href="plot2d.html"><code>plot2d</code></a> task 
               to return a magnitude-magnitude diagram of the named local file as an image
               (probably an <code>image/png</code>).
               
            </dd>
            <dt><strong><pre>
http://localhost:2112/stilts/task/tcopy?in=/data/cat.fits&ofmt=votable
</pre></strong></dt>
            <dd>Invokes the <a href="tcopy.html"><code>tcopy</code></a> task
               to return a translation of the named local FITS file to VOTable format.
               
            </dd>
         </dl>
         
      </p>
      <hr><a href="sqlclient.html">Next</a> <a href="secB.16.1.html">Previous</a> <a href="server.html">Up</a> <a href="index.html">Contents</a> <br> <b>Next: </b><a href="sqlclient.html">sqlclient:
         Executes SQL statements</a><br>
       <b>Up: </b><a href="server.html">server: </a><br>
       <b>Previous: </b><a href="secB.16.1.html">Examples</a><br>
      
      <hr><i>STILTS - Starlink Tables Infrastructure Library Tool Set<br>Starlink User Note256<br>STILTS web page:
         <a href="http://www.starlink.ac.uk/stilts/">http://www.starlink.ac.uk/stilts/</a><br>Author email:
         <a href="mailto:m.b.taylor@bristol.ac.uk">m.b.taylor@bristol.ac.uk</a><br>Mailing list:
         <a href="mailto:topcat-user@jiscmail.ac.uk">topcat-user@jiscmail.ac.uk</a><br></i></body>
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