I have been looking at running some twisted programs as a windows service.<div><br></div><div>So in the end I took a copy of twistd.py and adapted it to load my tac file and run it as a windows service.</div><div><br></div>
<div>Of course the windows service will run it in a separate thread. </div><div><br></div><div>I now have it running on XP, 2003 Server Twisted 10 and 12 and it all seemed fine.</div><div><br></div><div>However when I install it on Windows 7 I get an error<br clear="all">
<div><br></div><div><div>2012-10-23 07:54:49+0100 [-] Unhandled Error</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>Traceback (most recent call last):</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\base.py", line 413, in fireEvent</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> DeferredList(beforeResults).addCallback(self._continueFiring)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 297, in addCallback</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> callbackKeywords=kw)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 286, in addCallbacks</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> self._runCallbacks()</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 542, in _runCallbacks</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> current.result = callback(current.result, *args, **kw)</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>--- <exception caught here> ---</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\base.py", line 426, in _continueFiring</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> callable(*args, **kwargs)</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\base.py", line 1153, in _reallyStartRunning</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> self._handleSignals()</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\posixbase.py", line 277, in _handleSignals</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> _SignalReactorMixin._handleSignals(self)</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span> File "C:\Python27\lib\site-packages\twisted\internet\base.py", line 1118, in _handleSignals</div><div><span class="Apple-tab-span" style="white-space:pre"> </span> signal.signal(signal.SIGINT, self.sigInt)</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>exceptions.ValueError: signal only works in main thread</div></div><div><br></div><div><br></div>Looking around it would seem I need to tell the reactor 'installsignalhandlers=0'. I am not sure if I should do this with windows or not.</div>
<div><br></div><div>Has anyone got twistd.py to run as a service on windows because I would be glad to know what other people have done to solve the problem.</div><div><br></div><div>Thanks for any info.</div><div><br><b>John Aherne</b><div>
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