This Chord is implemented based on BUD, paper Chord and [P2][p2]'s example Chord are main references.

./runchord.sh
ruby test_chord.rb 127.0.0.1:88888 127.0.0.1:1111

The first command will run 8 instances (or say nodes) with different ports and generate 8 log files about communitating message to each other , the second will test the Chord ring with different ID, of course you can add one statnce/node to test ring's integrity.