Fix hang when trying to use Client after close

[gtopper]

No description provided.

[tomerm-iguazio]

I can not mark this lines because they remained unchanged, but please look at self._free_connections.put
inside these function:

wait_response (appear twice)

I think I will do it differently:

Instead of manually preventing it from each function and changing attribute type, I will create a class called CloseableQueue that inherit from Queue class.

The class will have a bool attribute called active.

In this way you can override default Queue.get/put and preventing it from running if active = False.

You can also dynamically raise an error from the calling method by using inspect:
def get(self,*args,**kwargs): if not self.active: raise RuntimeError(f"Cannot use get on a closed queue")

In this way, you will not need to manually check if the connections are not closed for each function before using self._free_connections.