Find latency of Yggdrasil public peers

latency-ygg-peers.fish

#!/usr/bin/fish

# After running this script
# To sort by fastest 10: cat OUTPUT_FILE | sort -n | head -n10
# To randomly output 10: cat OUTPUT_FILE | shuf -n10

# Then to convert into a format for yggdrasil config
# ... (Anyone of the above commands) | awk '{print "\"" $2 "\""}'

set output (mktemp -u)

for p in (curl 'https://publicpeers.neilalexander.dev/publicnodes.json' | jq '.[]' | jq -r 'keys[]' | uniq | shuf)
    set rm_proto (echo $p | sed -E 's/^(tcp|tls):\/\///')
    set rm_port (echo $rm_proto | sed -E 's/:[0-9]+?$//')
    set rm_bracket (echo $rm_port | sed -E 's/\[//' | sed -E 's/\]//')
    set rm_key (echo $rm_bracket | sed -E 's/\?key=.*$//')
    set rm_port2 (echo $rm_key | sed -E 's/:[0-9]+?$//')
    if not echo $urls_done | grep -F "$rm_port2" &>/dev/null
        echo INFO: Testing $rm_port2 1>&2
        set result (ping -qc4 $rm_port2 2>/dev/null)
        if test $status -eq 0
            set latency (echo $result | grep -Po '\d+\.\d+/\d+\.\d+/\d+\.\d+/\d+\.\d+' | cut -d'/' -f2)
            echo $latency $p
        else
            echo INFO: Can\'t reach $rm_port2 1>&2
        end
        set -a urls_done "$rm_port2"
    else
        echo INFO: Skipping $rm_port2, already done 1>&2
    end
end | tee $output

echo INFO: Output written to $output 1>&2