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Unable to send messages through Zeroconf/Bonjour protocol on a local network. Target client is also Gajim 1.1 on Debian. Target is available, however after sending a message I get the following traceback window + following error message in the chat window : "La connexion à l'hôte n'a pas pu être établie : délai d'envoi des données dépassé" (unable to reach the target).

Versions

• OS: Debian GNU/Linux buster/sid
• GTK+ Version: 3.24.2
• PyGObject Version: 3.30.4
• python-nbxmpp Version: 0.6.8
• Gajim Version: 1.1.0

Traceback

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/gi/overrides/GLib.py", line 662, in <lambda>
    func_fdtransform = lambda _, cond, *data: callback(channel, cond, *data)
  File "/usr/lib/python3/dist-packages/nbxmpp/idlequeue.py", line 563, in _process_events
    return IdleQueue._process_events(self, fd, flags)
  File "/usr/lib/python3/dist-packages/nbxmpp/idlequeue.py", line 411, in _process_events
    obj.pollin()
  File "/usr/lib/python3/dist-packages/gajim/common/zeroconf/client_zeroconf.py", line 546, in pollin
    self.on_receive(received)
  File "/usr/lib/python3/dist-packages/gajim/common/zeroconf/client_zeroconf.py", line 300, in _on_receive_document_attrs
    self.Dispatcher.ProcessNonBlocking(data)
  File "/usr/lib/python3/dist-packages/nbxmpp/dispatcher_nb.py", line 233, in ProcessNonBlocking
    self.Stream.Parse(data)
  File "../Modules/pyexpat.c", line 417, in StartElement
  File "/usr/lib/python3/dist-packages/nbxmpp/simplexml.py", line 640, in starttag
    self.stream_header_received(ns, name, attrs)
  File "/usr/lib/python3/dist-packages/gajim/common/zeroconf/client_zeroconf.py", line 277, in _check_stream_start
    self.send(stanza, is_message)
  File "/usr/lib/python3/dist-packages/nbxmpp/dispatcher_nb.py", line 580, in send
    self._owner.Connection.send(stanza, now)
  File "/usr/lib/python3/dist-packages/gajim/common/zeroconf/client_zeroconf.py", line 444, in send
    r = str(packet).encode('utf-8')
TypeError: __str__ returned non-string (type MagicMock)

Steps to reproduce the problem

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