Hi Karl, (repeating some irc conversation)
My experience is now that the dll needs to be in a path that is in the Windows %PATH% variable - so putting it in e.g. C:\Windows\System32 would work, or adding the path with mosquitto.dll to %PATH% should also work. I'm sure I did have it working in site-packages but this doesn't appear to be the case. Cheers, Roger On Wed, May 11, 2011 at 1:40 PM, karlp <[email protected]> wrote: > > Hi, > > I'm trying to use mosquitto 0.10 with python 2.7 on windows. I can use the > mosquitto_sub.exe commands quite happily, > and see the data, but there seems to be a ctypes problem finding the > mosquitto.dll when I try and use the python > bindings. (Full stack trace below) > > It seems that ctypes.util.find_library("mosquitto") is failing. I found a > related post in the comments at > http://mosquitto.org/2010/11/version-0-9-released/ and the reply was that > mosquitto.dll needed to be put somewhere on > the path. > > I've tried putting the dll in just about everywhere in sys.path, to no avail. > I've put it in C:\tools\Python27\Lib\site-packages > which is where the mosquitto.py ended up, following Roger's comments... "I > know it works if you put in > C:\Python27\lib\site-packages\ (assuming Python 2.7 and that’s where > mosquitto.py ended up) but I’m not really sure what > the proper way to deal with this is." > > but that still doesn't work for me. Any ideas? > > C:\srcx\python\mqtt_debug\src>python > Python 2.7.1 (r271:86832, Nov 27 2010, 18:30:46) [MSC v.1500 32 bit (Intel)] > on > win32 > Type "help", "copyright", "credits" or "license" for more information. >>>> import mosquitto > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File "c:\tools\python27\lib\site-packages\mosquitto.py", line 408, in > <module> > > _libmosq = cdll.LoadLibrary(find_library("mosquitto")) > File "c:\tools\python27\lib\ctypes\__init__.py", line 431, in LoadLibrary > return self._dlltype(name) > File "c:\tools\python27\lib\ctypes\__init__.py", line 353, in __init__ > self._handle = _dlopen(self._name, mode) > TypeError: expected string or Unicode object, NoneType found >>>> import ctypes.util >>>> ctypes.util.find_library("mosquitto") >>>> print ctypes.util.find_library("mosquitto") > None >>>> print ctypes.util.find_library("mosquitto.dll") > None >>>> import sys >>>> print sys.path > ['', 'C:\\windows\\system32\\python27.zip', 'c:\\tools\\python27\\DLLs', > 'c:\\to > ols\\python27\\lib', 'c:\\tools\\python27\\lib\\plat-win', > 'c:\\tools\\python27\ > \lib\\lib-tk', 'c:\\tools\\python27', > 'c:\\tools\\python27\\lib\\site-packages'] > > > I've tried DLLs, the root directory, the current source directory, > lib\site-packages, lib and libs, but no luck yet. > > Sincerely, > Karl P > > _______________________________________________ > Mailing list: https://launchpad.net/~mqtt-users > Post to : [email protected] > Unsubscribe : https://launchpad.net/~mqtt-users > More help : https://help.launchpad.net/ListHelp > _______________________________________________ Mailing list: https://launchpad.net/~mqtt-users Post to : [email protected] Unsubscribe : https://launchpad.net/~mqtt-users More help : https://help.launchpad.net/ListHelp
