Multiprocessing doesn't seem to work?

[DeaD_EyE]

Something isn't right with the implementation of the multiprocessing, but I don't think there's any issue with the functions.

No :-D
The implementation is well tested.

In your modules, you call the function beginSending() and in the other beginRec().
Don't do this. Remove the call from both modules or use the boilerpate code:

...

if __name__ == '__main__':
    beginRec()

If you use this code, the function beginRec() is not called, when:

• The module was imported
  
• Multiprocessing loads the module
  

Currently you call beginRec() twice and beginSending() twice.
Once the modules were imported and one time when Multiprocessing calls the target functions.