Handle exception when no network

[TAlonglong]

Handle exception and check if address recevier has started if network is missing

[codecov]

Codecov Report

Merging #52 (4165376) into main (14d84af) will increase coverage by 0.90%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #52      +/-   ##
==========================================
+ Coverage   78.75%   79.65%   +0.90%     
==========================================
  Files          14       15       +1     
  Lines        2099     2168      +69     
==========================================
+ Hits         1653     1727      +74     
+ Misses        446      441       -5     

Impacted Files	Coverage Δ
posttroll/address_receiver.py	96.77% <100.00%> (+0.80%)	⬆️
posttroll/ns.py	95.60% <100.00%> (+0.14%)	⬆️
posttroll/tests/test_pubsub.py	96.74% <100.00%> (+0.12%)	⬆️
posttroll/__init__.py	88.09% <0.00%> (ø)
posttroll/version.py	39.54% <0.00%> (+2.54%)	⬆️

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[TAlonglong]

I think this solve the issue. Not sure if the refactor caused more issues than it solved.

But the tests does not complete it seems.

What do you think

[mraspaud]

Are the tests running locally? It seems to be working with python 3.10 at least, but I cannot see why your changing might be causing the problem