This is a simple ipfs dht crawler, written to diagnose connectivity issues in the network.

To build:

make

to run:

ipfs-crawl

This will run indefinitely and generate a file ipfs-crawl.out in the current directory, logging (in json) the results of connection attemps to peers discovered during the crawl.

If you want detailed dial logs, then invoke the crawler with:

ipfs-crawl -log-dial

This will log all dial events to ipfs-crawl-events.json in the current directory. But see issue #4 for a wart.

Note: You should make sure your file descriptor ulimit is sufficiently high to potentially connect to all the reachable peers. The network is currently small enough for this to be practical.