Get an error <'NoneType' object has no attribute 'peer_certificate'> when clone code from google code by Mercurial

Question

Description

There is no error when clone by http, the error only meet when clone by https.

Env

Install Mercurial by mercurial-1.9.1+20110801-py2.6-macosx10.6.mpkg from http://mercurial.berkwood.com/binaries/Mercurial-1.9.1-py2.6-macosx10.6.zip

site-packages location: /Library/Python/2.6/site-packages

Command:

hg clone https://code.google.com/p/cooliris-toolkit/

Error Info

    hg clone https://code.google.com/p/cooliris-toolkit/
    ** unknown exception encountered, please report by visiting
    **  http://mercurial.selenic.com/wiki/BugTracker
    ** Python 2.6.1 (r261:67515, Jun 24 2010, 21:47:49) [GCC 4.2.1 (Apple Inc. build 5646)]
    ** Mercurial Distributed SCM (version 1.9.1+20110801)
    ** Extensions loaded: 
    Traceback (most recent call last):
      File "/usr/local/bin/hg", line 38, in 
        mercurial.dispatch.run()
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 27, in run
        sys.exit(dispatch(request(sys.argv[1:])))
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 64, in dispatch
        return _runcatch(req)
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 87, in _runcatch
        return _dispatch(req)
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 679, in _dispatch
        cmdpats, cmdoptions)
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 454, in runcommand
        ret = _runcommand(ui, options, cmd, d)
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 733, in _runcommand
        return checkargs()
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 687, in checkargs
        return cmdfunc()
      File "/Library/Python/2.6/site-packages/mercurial/dispatch.py", line 676, in 
        d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
      File "/Library/Python/2.6/site-packages/mercurial/util.py", line 385, in check
        return func(*args, **kwargs)
      File "/Library/Python/2.6/site-packages/mercurial/commands.py", line 1041, in clone
        branch=opts.get('branch'))
      File "/Library/Python/2.6/site-packages/mercurial/hg.py", line 217, in clone
        srcrepo = repository(remoteui(ui, peeropts), source)
      File "/Library/Python/2.6/site-packages/mercurial/hg.py", line 93, in repository
        repo = _peerlookup(path).instance(ui, path, create)
      File "/Library/Python/2.6/site-packages/mercurial/httprepo.py", line 231, in instance
        inst._fetchcaps()
      File "/Library/Python/2.6/site-packages/mercurial/httprepo.py", line 56, in _fetchcaps
        self.caps = set(self._call('capabilities').split())
      File "/Library/Python/2.6/site-packages/mercurial/httprepo.py", line 164, in _call
        fp = self._callstream(cmd, **args)
      File "/Library/Python/2.6/site-packages/mercurial/httprepo.py", line 114, in _callstream
        resp = self.urlopener.open(req)
      File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 383, in open
        response = self._open(req, data)
      File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 401, in _open
        '_open', req)
      File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/urllib2.py", line 361, in _call_chain
        result = func(*args)
      File "/Library/Python/2.6/site-packages/mercurial/url.py", line 352, in https_open
        return self.do_open(self._makeconnection, req)
      File "/Library/Python/2.6/site-packages/mercurial/keepalive.py", line 256, in do_open
        self._start_transaction(h, req)
      File "/Library/Python/2.6/site-packages/mercurial/url.py", line 342, in _start_transaction
        return keepalive.KeepAliveHandler._start_transaction(self, h, req)
      File "/Library/Python/2.6/site-packages/mercurial/keepalive.py", line 354, in _start_transaction
        h.endheaders()
      File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/httplib.py", line 868, in endheaders
        self._send_output()
      File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/httplib.py", line 740, in _send_output
        self.send(msg)
      File "/Library/Python/2.6/site-packages/mercurial/url.py", line 129, in _sendfile
        orgsend(self, data)
      File "/Library/Python/2.6/site-packages/mercurial/keepalive.py", line 537, in safesend
        self.connect()
      File "/Library/Python/2.6/site-packages/mercurial/url.py", line 331, in connect
        sslutil.validator(self.ui, host)(self.sock)
      File "/Library/Python/2.6/site-packages/mercurial/sslutil.py", line 97, in __call__
        msg = _verifycert(sock.getpeercert(), host)
      File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/ssl.py", line 157, in getpeercert
        return self._sslobj.peer_certificate(binary_form)
    AttributeError: 'NoneType' object has no attribute 'peer_certificate'

Question

How can I resolve the error ? Is there any conflict in python libraries ?

Answer 1

After I installed Mercurial (version 1.9.3)， I encountered the same problem with Sailing, when I hg clone https://code.google.com/p/vim/

And my solution is: hg clone http://code.google.com/p/vim/

I guess Mercurial 1.9.3 sslutil.py has bug in line 105: peercert = sock.getpeercert(True)