Here's what seemed to work for me:
var io = require('socket.io-client');
var crypto = require('crypto');
var socket = io.connect('https://socketio.mtgox.com/mtgox');
var MTGOX_API_INFO = {
key: '<YOUR_KEY>',
secret: '<YOUR_SECRET>'
}
var MTGOX_CHANNELS = {
trade: 'dbf1dee9-4f2e-4a08-8cb7-748919a71b21',
depth: '24e67e0d-1cad-4cc0-9e7a-f8523ef460fe',
ticker: 'd5f06780-30a8-4a48-a2f8-7ed181b4a13f'
}
// unsubscribe from depth and trade messages
socket.emit('message', {
op: 'unsubscribe',
channel: MTGOX_CHANNELS.trade
});
socket.emit('message', {
op: 'unsubscribe',
channel: MTGOX_CHANNELS.depth
});
socket.emit('message', {
op: 'unsubscribe',
channel: MTGOX_CHANNELS.ticker
});
var getNonce = function() {
return ((new Date()).getTime() * 1000).toString();
}
var nonce = getNonce();
var requestId = crypto.createHash('md5').update(nonce).digest('hex');
var query = {
id: requestId,
call: 'private/info',
nonce: nonce
// params: {},
// item: 'BTC',
// currency: 'USD'
};
var queryJSON = JSON.stringify(query);
var signedQuery = crypto.createHmac('sha512', new Buffer(MTGOX_API_INFO.secret, 'base64')).update(queryJSON).digest('binary');
var binKey = (new Buffer(MTGOX_API_INFO.key.replace(/-/g, ''), 'hex')).toString('binary');
var buffer = new Buffer(binKey + signedQuery + queryJSON, 'binary');
var call = buffer.toString('base64');
var command = {
op: 'call',
id: requestId,
call: call,
context: 'mtgox.com'
};
console.log("REQUEST:", command);
socket.emit('message', command);
socket.on('message', function(data) {
console.log(data);
});
UPDATE: I've also abstracted it into a simple node module.