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</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>we've been asked if Autobahn runs under Jython. Since there is an upcoming Jython version that supports 2.7 Python API, I thought I'd give it a try.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>To my astonishment, I was able to get Autobahn working with minor efforts …<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Tested: Twisted 12.3 under Jython from sources (together with zope.interface 4.05 and setuptools from sources) after applying the following patches. Stock AutobahnPython 0.6 from source.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>1) Missing __builtin__.buffer<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The following is a workaround due to <a href="http://bugs.jython.org/issue1521">http://bugs.jython.org/issue1521</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Include<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal># workaround for Jython, see: http://bugs.jython.org/issue1521<o:p></o:p></p><p class=MsoNormal>import __builtin__<o:p></o:p></p><p class=MsoNormal>if not hasattr(__builtin__, 'buffer'):<o:p></o:p></p><p class=MsoNormal> def _buffer(object, offset = None, size = None):<o:p></o:p></p><p class=MsoNormal> if offset is None:<o:p></o:p></p><p class=MsoNormal> offset = 0<o:p></o:p></p><p class=MsoNormal> if size is None:<o:p></o:p></p><p class=MsoNormal> size = len(object)<o:p></o:p></p><p class=MsoNormal> return object[offset:offset+size]<o:p></o:p></p><p class=MsoNormal> __builtin__.buffer = _buffer<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>at the beginning of "twisted/python/compat.py".<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2) Weird platform ident<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Jython identifies itself as "Java" .. I was testing on Windows.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>twisted/python/runtime.py<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Line 36<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> #'java': 'java',<o:p></o:p></p><p class=MsoNormal> 'java': 'win32',<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>This is necessary on Windows since otherwise Posix API is assumed.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Of course above is just a quick hack.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>C:\Users\oberstet>jython<o:p></o:p></p><p class=MsoNormal>Jython 2.7b1 (default:ac42d59644e9, Feb 9 2013, 15:24:52)<o:p></o:p></p><p class=MsoNormal>[Java HotSpot(TM) 64-Bit Server VM (Oracle Corporation)] on java1.7.0<o:p></o:p></p><p class=MsoNormal>Type "help", "copyright", "credits" or "license" for more information.<o:p></o:p></p><p class=MsoNormal>>>> import sys, os<o:p></o:p></p><p class=MsoNormal>>>> sys.platform<o:p></o:p></p><p class=MsoNormal>'java1.7.0'<o:p></o:p></p><p class=MsoNormal>>>> os.name<o:p></o:p></p><p class=MsoNormal>'java'<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>IMHO, os.name should return the real underlying OS on Jython, not "java" .. what do you think?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>===<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Where should those issue be adressed? Should Twisted include workarounds or should I lobby at Jython to "do the right" thing?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Cheers,<o:p></o:p></p><p class=MsoNormal>Tobias<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Mit freundlichen Grüßen,<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Tobias Oberstein<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Geschäftsführer</span><span style='mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>+49(0)9131 940 3574<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>+49(0)176 23 752 055<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'><a href="mailto:tobias.oberstein@tavendo.de">tobias.oberstein@tavendo.de</a><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Skype: <a href="skype:toberstein?call">toberstein</a><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Twitter: <a href="https://twitter.com/oberstet">@oberstet</a><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'>Xing: <a href="https://www.xing.com/profile/Tobias_Oberstein">Tobias Oberstein</a><o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='mso-fareast-language:DE'><img border=0 width=256 height=54 id="Bild_x0020_1" src="cid:image003.png@01CE1BF7.08C826D0" alt="tavendo_with_phrase_small"><o:p></o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='mso-fareast-language:DE'><o:p> </o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='mso-fareast-language:DE'>Tavendo GmbH </span><span style='mso-fareast-language:DE'>·</span><span style='mso-fareast-language:DE'> Am Weihersbach 13 </span><span style='mso-fareast-language:DE'>·</span><span style='mso-fareast-language:DE'> 91074 Herzogenaurach</span><span style='mso-fareast-language:DE'> · Deutschland</span><span style='mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='mso-fareast-language:DE'>Office / Postanschrift : Waldstrasse 18 </span><span style='mso-fareast-language:DE'>· 91054 Erlangen · Deutschland<o:p></o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='mso-fareast-language:DE'>+49(+)700 GO TAVENDO </span><span style='mso-fareast-language:DE'>· +49(0)700 46 828 36 36 · <a href="http://www.tavendo.de/">www.tavendo.de</a></span><span style='mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal align=center style='text-align:center'><span style='mso-fareast-language:DE'>Amtsgericht Fürth · HRB 10365 · USt-Id.Nr DE246462916 · Geschäftsführer Tobias Oberstein</span><span style='mso-fareast-language:DE'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>