This wireshark dissector allows you to inspect all SAMP traffic in real time. It is intended for SAMP 0.3.7, but other versions possibly work as well.
With this wireshark dissector, you can drill into all traffic and view communication between client and server. This is useful for understanding inefficiencies in your server (due to excessive traffic), or could be used to aid in any issues to see exactly what is being sent and received.
https://github.com/chc/samp-wireshark-dissector/releases/tag/v0.2