Reusing messages? (Fragmentation avoidance)

[GavinLaz]

As far as I can tell, there's no way to reuse messages that have been successfully sent/received. Is that correct?

Basically, I am concerned about memory fragmentation in our process from the constant allocation/freeing of memory for messages. We have been burned by this before, and so before adopting NNG I have been looking into the way it works and fragmentation is a possible concern.

Another way to handle this would be to supply a custom allocator which pools memory buffers (as our messages are of consistent sizes). However, that is not currently supported (at least in version 1.11 which is available via Vcpkg). I could make a patch that allows substitution of the allocation functions, but I'm wondering if anyone has any other suggestions.

Thank you!