Run 2 nodes with totally different ports on regtest
bitcoind -regtest=1 -port=18333 -datadir=/house/satoshi/node1
bitcoind -regtest=1 -port=18444 -datadir=/house/satoshi/node2
Add node1 as outbound connection in node2
addnode "127.0.0.1:18333" "add"
Run Wireshark and choose adapter for loopback site visitors seize. You will notice some packets with ‘bitcoin’ protocol.
Instance: That is INV message despatched by node2 to node1 once I generated a block utilizing generatetoaddress 10 bcrt1qugkqq2a3lhf58e4pclcf52dgd4e02hpve3vhzs
For reference, Wireshark has included the flexibility to decode Bitcoin protocol packets since model 1.10.
