I've known various people who have implemented various systems like this. My main suggestion would be that instead of using named pipes, attempt to listen to a port. if you can, start the daemon; if you can't that means the daemon is already running and you should communicate with it (via that port).
This not only provides an easy way to deal with the "it died horribly and left the pipe file around" type problems (because if the process dies it won't be bound to the port anymore) but also allows you to do stuff like ... make HTTP your communication protocol. that way any HTTP client library can be used to talk to your server.
Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
Want more info? How to link or
or How to display code and escape characters
are good places to start.