Hi Jean-Michel, I am also working one a tcp stream reassembly utility and I see that you have done some work in defining the C wrapper for the libnids reassembly patch for Python.  I was wondering if you have actually used the resume function in Python ? I have tried but are not getting a usable structure from the callback in Python.  Do you perhaps have a sample Python function call or some tips maybe in order to use this function in Python? Regards, ChrisA