<div dir="auto">Side note: multiprocessing is part of the Python standard library.<div dir="auto"><a href="https://docs.python.org/2.7/library/multiprocessing.html">https://docs.python.org/2.7/library/multiprocessing.html</a><br></div><div dir="auto"><br></div><div dir="auto">Giovanni</div></div><div class="gmail_extra"><br><div class="gmail_quote">Il 21 mag 2017 14:18, "Andreas Plesch" <<a href="mailto:andreasplesch@gmail.com">andreasplesch@gmail.com</a>> ha scritto:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">As a followup, here is the simple processing script which is my attempt at launching a separate task:<div><br></div><div><a href="https://github.com/andreasplesch/QGIS-X3D-Processing/blob/master/scripts/launch_webserver.py" target="_blank">https://github.com/<wbr>andreasplesch/QGIS-X3D-<wbr>Processing/blob/master/<wbr>scripts/launch_webserver.py</a><br></div><div><br></div><div>qgis2web does not seem to need a real http server for the preview as openlayers apparently can use the file protocol.</div><div><br></div><div>-Andreas<br><div class="gmail_extra"><br><div class="gmail_quote">On Sat, May 20, 2017 at 5:29 PM, Andreas Plesch <span dir="ltr"><<a href="mailto:andreasplesch@gmail.com" target="_blank">andreasplesch@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">I would like to launch a minimal web server from a processing script to serve html properly (rather than using the file protocol).<div><br></div><div>Since the web server needs to run and keep running separately from qgis or the qgis python interpreter, I investigated various ways to accomplish this using SimpleHTTPServer. On windows 2.18.7 as linux should be more robust.</div><div><br></div><div>- threading.Threat : start() works until the server actually serves a file. Then qgis crashes with a minidump . For some reason, the crashing happens not always but more often than not.</div><div>- multiprocessing : seems to be the recommended solution but I do not seem to have it with Qgis python (?)</div><div>- QProcess.start() : works from the python terminal, seems robust but does not seem to work from a processing script (?). Would be the preferred solution.</div><div>- QProcess.startDetached('python<wbr>',(args),dir) : works reliably but requires killing and restarting the process to change the root directory served</div><div><br></div><div><div>This may all change with Qgis 3 but I suspect 2.18 will be around for a while, too.</div><div><br></div><div>Any recommendations or ideas would be welcome.</div><div><br></div><div>I will look into qgis2web to see what it does.</div><span class="m_7754341851245049440gmail-HOEnZb"><font color="#888888"><div><br></div>-- <br><div class="m_7754341851245049440gmail-m_1640074130608958439gmail_signature">Andreas Plesch<br>39 Barbara Rd.<br>Waltham, MA 02453</div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="m_7754341851245049440gmail_signature">Andreas Plesch<br>39 Barbara Rd.<br>Waltham, MA 02453</div>
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