Something

Example.js

// This can take a long time to run.  It emits each result as it finds it.  
findMatches.prototype.find = function(hash) {
    console.log('Searching for hash: ' + hash);
    for (var i=0; i < hashes.length; i++) {
        if (hamming(hash, hashes[i].hash) < 10) {
            console.log('emiiting match');
            this.emit('found-match', hashes[i]);
        }
    }
};

finder.find(msg) // This is hanging the server