Implement RFC-3411 (for SNMPv3 and SNMPv1 support)

[exhuma]

Issue Description

RFC-3411 outlines a recommended architecture for SNMP applications. The architecture aims to be future-proof and allows for easier extension.

It most importantly allows better and cleaner support for both SNMPv1, SNMPv2 and SNMPv3 with a shared code-base.

Implementing this architecture would be a stepping stone for SNMPv3 support and would also allow us to tackle #3 for better transport-level settings like timeouts.

[forrejam]

Just wondering what are the blockers for v3 support and if could start to help in that area? is there anywhere tracking what needs to be done or potential issues with implementing v3 support?

[exhuma]

There's a release candidate out with SNMPv3 support. https://pypi.org/project/puresnmp/#history

You can install it by either pinning the version: pip install "puresnmp==2.0.0rc6" or activating the --pre flag: pip install --pre puresnmp

If you need DES and AES encryption you need to activate the crypto extra: pip install puresnmp[crypto]. It is packaged separately so applications that don't need encryption don't need to pull in those dependencies.

As this is a major upgrade, I strongly suggest looking at the docs: https://puresnmp.readthedocs.io/en/develop/

[exhuma]

Considering that it is implemented I will close this. The RC has been in use for quite a while already and it qualifies as a full release. I am planning to do that in the coming days.