This is a small go program that can be used to crawl cometbft-based blockchains to discover their p2p landscape. Given a set of seed nodes (just initial rpcs; not seeds in the sense of cometbft seed nodes), it queries them for their peers, and recursively these for their peers, until a full map has been collected.
The result is a CSV file with IP address, node moniker, and cometbft version.
To build:
go build crawler.goTo run:
./crawler.go --seeds "<seed-rpcs>" --timeout <seconds> --output <output-file>