send 0xfd

var serverKey = ursa.generatePrivateKey(1024);
var publicKeyStrArr = serverKey.toPublicPem("utf8").split("\n");
var publicKeyStr = "";
for (var i=1;i<publicKeyStrArr.length - 2;i++) {
publicKeyStr += publicKeyStrArr[i]
}
client.publicKey = new Buffer(publicKeyStr,'base64');

(Send public key)