pypeman --reload not working with simple HTTP endpoint

[klausfmh]

Scenario:
1.) Create a pypeman graph with a simple HTTPEndpoint and one node.
2.) start pypeman with the --reload option
3.) let pypeman process one message
4.) change the project.py file

What can be observed:

Pypeman freezes after the message
End started tasks...

sample project to reproduce the problem

import logging

from pypeman import channels
from pypeman import endpoints
from pypeman import nodes

logger = logging.getLogger(__name__)

class TestNode(nodes.BaseNode):
    def process(self, msg):
        logger.info("got msg %r", msg)
        return msg

http = endpoints.HTTPEndpoint(
    sock='localhost:8081',
    reuse_port=True,
    )

chan_get = channels.HttpChannel(
    name="get_chan", endpoint=http,
    method='GET',
    url="/get/{myid}",
    )

chan_get.add(
    TestNode(),
    )

logger.info("created graph")

[klausfmh]

after a reload attempt http requests are still handled by iohttp, but no more forwarded to the handling node