How can I programmatically monitor the activity on an already opened serial port?
<p>Is there a library or code sample (preferably C# or Java, but not required) that allows to "sniff" what is happening on a serial port which is being used by another application? Like this software does:</p>

<p><a href="http://www.eltima.com/products/serial-port-monitor/" rel="nofollow">http://www.eltima.com/products/serial-port-monitor/</a></p>
