id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
710	exception from binascii.unhexlify when handling announcements on Python 2.4.1	exarkun	somebody	"When I start up a node on Python 2.4, if I insert some additional logging, then I can see this unhandled exception happening partway through processing the initial announcements list:

{{{
2009-05-18 22:24:17-0400 [-] Unhandled Error
        Traceback (most recent call last):
          File ""/c/home/tahoe/allmydata-tahoe-1.4.1/Twisted-8.1.0-py2.4-linux-padre.egg/twisted/internet/defer.py"", line 328, in _runCallbacks
            self.result = callback(self.result, *args, **kw)
          File ""/c/home/tahoe/allmydata-tahoe-1.4.1/support/lib/python2.4/site-packages/foolscap-0.3.2-py2.4.egg/foolscap/broker.py"", line 536, 
in <lambda>
            d.addCallback(lambda res: self._doCall(delivery))
          File ""/c/home/tahoe/allmydata-tahoe-1.4.1/support/lib/python2.4/site-packages/foolscap-0.3.2-py2.4.egg/foolscap/broker.py"", line 571, 
in _doCall
            return obj.doRemoteCall(delivery.methodname, args, kwargs)
          File ""/c/home/tahoe/allmydata-tahoe-1.4.1/support/lib/python2.4/site-packages/foolscap-0.3.2-py2.4.egg/foolscap/referenceable.py"", lin
e 59, in doRemoteCall
            res = meth(*args, **kwargs)
        --- <exception caught here> ---
          File ""/c/home/tahoe/allmydata-tahoe-1.4.1/src/allmydata/introducer/client.py"", line 252, in remote_announce
            self._new_announcement(ann)
          File ""/c/home/tahoe/allmydata-tahoe-1.4.1/src/allmydata/introducer/client.py"", line 258, in _new_announcement
            index = make_index(announcement)
          File ""/c/home/tahoe/allmydata-tahoe-1.4.1/src/allmydata/introducer/common.py"", line 9, in make_index
            nodeid = b32decode(m.group(1).upper())
          File ""/usr/lib/python2.4/base64.py"", line 224, in b32decode
            parts.append(binascii.unhexlify(hex(acc)[2:-1]))
        exceptions.TypeError: Odd-length string
}}}

A related issue may be that this sort of exception isn't being reported at all, as far as I can tell.  It manifest as a mysterious shortness in the known peers list on the welcome page.  To discover the problem, I had to edit the code to insert a try/except/log.err call.
"	defect	closed	major	undecided	code	1.4.1	fixed	error logging