Tutorials with OSBrain as backend don't run with PyCharm on Windows

[anupam-prasad]

Tutorials don't run on Windows. The issue seems to be the address http://0.0.0.0:3333. They work after changing the backend to Mesa.

Related output:

C:\Users\vedurm01\agentMET4FOF\venv\Scripts\python.exe C:/Users/vedurm01/agentMET4FOF/agentMET4FOF_tutorials/tutorial_2_math_agent.py
Error on connecting to existing name server at http://0.0.0.0:3333: Could not locate the name server!
Starting NameServer...
Broadcast server running on 0.0.0.0:9091
NS running on 0.0.0.0:3333 (0.0.0.0)
URI = PYRO:Pyro.NameServer@0.0.0.0:3333
Traceback (most recent call last):
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\Pyro4\core.py", line 511, in connect_and_handshake
    sock = socketutil.createSocket(connect=connect_location,
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\Pyro4\socketutil.py", line 307, in createSocket
    sock.connect(connect)
OSError: [WinError 10049] Die angeforderte Adresse ist in diesem Kontext ungültig

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\Pyro4\core.py", line 2009, in _locateNS
    proxy._pyroBind()
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\Pyro4\core.py", line 408, in _pyroBind
    return self.__pyroCreateConnection(True)
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\Pyro4\core.py", line 596, in __pyroCreateConnection
    connect_and_handshake(conn)
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\Pyro4\core.py", line 549, in connect_and_handshake
    raise ce
Pyro4.errors.CommunicationError: cannot connect to ('0.0.0.0', 3333): [WinError 10049] Die angeforderte Adresse ist in diesem Kontext ungültig

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\osbrain\proxy.py", line 43, in locate_ns
    Pyro4.locateNS(host, port)
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\Pyro4\core.py", line 2016, in _locateNS
    raise e
Pyro4.errors.NamingError: Failed to locate the nameserver

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/vedurm01/agentMET4FOF/agentMET4FOF_tutorials/tutorial_2_math_agent.py", line 72, in <module>
    main()
  File "C:/Users/vedurm01/agentMET4FOF/agentMET4FOF_tutorials/tutorial_2_math_agent.py", line 51, in main
    agentNetwork = AgentNetwork()
  File "C:\Users\vedurm01\agentMET4FOF\agentMET4FOF\network.py", line 595, in __init__
    self.start_server_osbrain(ip_addr, port)
  File "C:\Users\vedurm01\agentMET4FOF\agentMET4FOF\network.py", line 668, in start_server_osbrain
    self.ns = run_nameserver(addr=ip_addr + ":" + str(port))
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\osbrain\nameserver.py", line 233, in run_nameserver
    return NSProxy(addr)
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\osbrain\proxy.py", line 329, in __init__
    locate_ns(nsaddr, timeout)
  File "C:\Users\vedurm01\agentMET4FOF\venv\lib\site-packages\osbrain\proxy.py", line 49, in locate_ns
    raise TimeoutError('Could not locate the name server!')
TimeoutError: Could not locate the name server!

[BjoernLudwig]

That might be related and in fact affected by a running local firewall in a very unforeseeable way. If there is one running on your machine, could you please try to disable it temporarily for running the tutorial and report back if that changes anything?

[BjoernLudwig]

After short investigation today, we found that neither deactivating the local firewall nor changing agentMet4FoF.network.add_agent()'s IP solved the issue. I will dig deeper and keep you updated.

[BjoernLudwig]

@bangxiangyong Say, I recall, that something like this already occured earlier, right? Do you remember something similar? Does it actually work for you?

[bangxiangyong]

That's strange.. I could be wrong but I'm quite sure it worked on my Windows PC before, i could try running this version sometime this week

[bangxiangyong]

I can confirm that with the latest version of agentMET4FOF, I face the same problem. Backtracking to the previous commit 6a9171d , however, i was able to run the tutorials fine.

So, something must have changed that broke it.