When you code in a programming language such as Python or Java, you do not need to worry about memory management since these languages have built-in mechanisms to clean up the memory.
For example, Python uses reference counting when there are cycles in a reference chain of objects, which never gets freed and memory automatically gets cleaned up for you when you implement a ZeroMQ application in Python. So, you do not need to explicitly close a connection when coding a ZeroMQ application since it will be closed as soon as the reference count of the object becomes zero. However, we should note that this would not work on Jython, PyPy, or IronPython. Anyway, this is enough information on Python. Let's return to our main concern.
When you code in C, memory management is your responsibility. Otherwise you will have an unstable application, which will have memory leak problems.
You need to take care of sockets, messages, and contexts in ZeroMQ. There are a couple of things you need to...