exception.pytb

Traceback (most recent call last):
  File "testcase.py", line 37, in <module>
    trio.run(run)
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 1130, in run
    return result.unwrap()
  File "/usr/lib/python3.6/site-packages/trio/_core/_result.py", line 118, in unwrap
    raise self.error
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 1230, in run_impl
    msg = task.coro.send(next_send)
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 747, in init
    return system_nursery.reap_and_unwrap(task)
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 286, in reap_and_unwrap
    return task.result.unwrap()
  File "/usr/lib/python3.6/site-packages/trio/_core/_result.py", line 118, in unwrap
    raise self.error
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 1230, in run_impl
    msg = task.coro.send(next_send)
  File "testcase.py", line 34, in run
    nursery.spawn(client, event)
  File "/usr/lib/python3.6/site-packages/trio/_util.py", line 39, in __aexit__
    await self._agen.asend(None)
  File "/usr/lib/python3.6/site-packages/async_generator/impl.py", line 253, in asend
    return await self._do_it(self._it.send, value)
  File "/usr/lib/python3.6/site-packages/async_generator/impl.py", line 269, in _do_it
    return await ANextIter(self._it, start_fn, *args)
  File "/usr/lib/python3.6/site-packages/async_generator/impl.py", line 192, in send
    return self._invoke(self._it.send, value)
  File "/usr/lib/python3.6/site-packages/async_generator/impl.py", line 199, in _invoke
    result = fn(*args)
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 213, in open_nursery
    await nursery._clean_up(pending_exc)
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 353, in _clean_up
    raise mexc
  File "/usr/lib/python3.6/site-packages/trio/_core/_run.py", line 1230, in run_impl
    msg = task.coro.send(next_send)
  File "testcase.py", line 24, in server
    await socket.accept()
  File "/usr/lib/python3.6/site-packages/trio/socket.py", line 462, in accept
    return from_stdlib_socket(sock), addr
  File "/usr/lib/python3.6/site-packages/trio/socket.py", line 136, in from_stdlib_socket
    return SocketType(sock)
  File "/usr/lib/python3.6/site-packages/trio/socket.py", line 192, in __init__
    self.setsockopt(IPPROTO_IPV6, IPV6_V6ONLY, False)
OSError: [Errno 22] Invalid argument

testcase.py

import trio


host = '::1'
port = 12345


async def client(event):
    await event.wait()

    with trio.socket.socket(trio.socket.AF_INET6) as socket:
        await socket.connect((host, port))

        print('connected')


async def server(event):
    with trio.socket.socket(trio.socket.AF_INET6) as socket:
        socket.bind((host, port))
        socket.listen()

        event.set()

        await socket.accept()

        print('accepted')


async def run():
    async with trio.open_nursery() as nursery:
        event = trio.Event()

        nursery.spawn(server, event)
        nursery.spawn(client, event)


trio.run(run)