var mc = require('minecraft-protocol'); if(process.argv.length < 4 || process.argv.length > 6) { console.log("Usage : node echo.js [] []"); process.exit(1); } var customPackets={ "play":{ "toClient":{ "my_custom_packet": { "id": "0x7A", "fields": [ { "name": "age", "type": "i64" }, { "name": "time", "type": "i64" } ] } } } }; var client = mc.createClient({ host: process.argv[2], port: parseInt(process.argv[3]), username: process.argv[4] ? process.argv[4] : "echo", password: process.argv[5], customPackets:customPackets }); client.on('connect', function() { console.info('connected'); }); client.on('disconnect', function(packet) { console.log('disconnected: '+ packet.reason); }); client.on('end', function(err) { console.log('Connection lost'); }); client.on('login',function(){ client.deserializer.write(new Buffer("7A0000000000909327fffffffffffffc18","hex")); console.log('login'); }); client.on('my_custom_packet',function(packet){ console.log(packet); });