Custom read handler for sockets demo for appserver.py and appclient.py (libserver, libclient)

[ganeshkbhat]

:information_source: https://github.com/realpython/materials/blob/master/python-sockets-tutorial/app-server.py https://github.com/realpython/materials/blob/master/python-sockets-tutorial/app-client.py https://github.com/realpython/materials/blob/master/python-sockets-tutorial/libserver.py https://github.com/realpython/materials/blob/master/python-sockets-tutorial/libclient.py

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Describe the bug I am trying to use the appclient and appserver demo from the above sockets tutorial and want to process a custom function using the data read from the server read or client read.

To Reproduce NA

Expected behavior Able to run a custom function after a read is done in server or client using the data read.

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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6] NA
• OS: [e.g. iOS8.1] Linux, Windows
• Browser [e.g. stock browser, safari] NA
• Version [e.g. 22] NA

Additional context NA