public static byte[] UnPack(byte[] data, out uint sess)
{
sess = 0;
var len = data.Length;
if (len == Const.HeartBeatLength)
{
return(new byte[] { });
}
//先检查下最小长度//
if (len < Const.PackageSessionLength + Const.PackageHmacLength)
{
DebugLogger.DebugNetworkError("Receve Data Length Error! Got " + len + " Byte, Less than Session Length plus Hmac Length");
throw new NetworkingException((int)ErrorCode.DataError);
}
string hmac_pkg = NetCrypter.CryptData(data, 0, len - Const.PackageHmacLength);
string hmac_server = Encoding.Default.GetString(data, len - Const.PackageHmacLength, Const.PackageHmacLength);
if (hmac_pkg != hmac_server)
{
DebugLogger.DebugNetworkError("HMAC Invalid! hmac_pkg:" + hmac_pkg + ", hmac_server: " + hmac_server);
throw new NetworkingException((int)ErrorCode.DataError);
}
int dataLength = len - Const.PackageHmacLength - Const.PackageSessionLength;
//获得SessionID//
sess = NetUtil.bigEndian2UInt(data, dataLength, Const.PackageSessionLength);
//拷贝获得的接收数据//
var ReceiveData = new byte[dataLength];
Buffer.BlockCopy(data, 0, ReceiveData, 0, dataLength);
return(ReceiveData);
}
public static byte[] Pack(uint sess, string opCode, byte[] data)
{
int index = 0;
int msglen = data.Length + Const.PackageSessionLength + Const.PackageHmacLength;
byte[] header = NetUtil.ushort2bigEndian((ushort)msglen);
var SendData = new byte[header.Length + msglen];
// 拷贝文件长度数据
Buffer.BlockCopy(header, 0, SendData, index, header.Length);
index += header.Length;
//先将数据拷贝到数据包//
Buffer.BlockCopy(data, 0, SendData, index, data.Length);
index += data.Length;
//获得Session的Byte数据//
byte[] session = NetUtil.uInt2BigEndian(sess);
//拷贝Session数据//
Buffer.BlockCopy(session, 0, SendData, index, session.Length);
index += session.Length;
//计算Hmac数据//
byte[] hmac = Encoding.Default.GetBytes(NetCrypter.CryptData(SendData, header.Length, index));
//拷贝Hmac数据//
Buffer.BlockCopy(hmac, 0, SendData, index, hmac.Length);
return(SendData);
}
public static byte[] GenHandShake(string uid, string gameServer, string subid, uint connectionIndex)
{
int clientReceivedSeq = 0;
DebugLogger.Debug("GenHandShake uid:" + uid + " gameServer:" + gameServer + " subid:" + subid);
string handshake = string.Format
(
"{0}@{1}#{2}:{3}:{4}",
Convert.ToBase64String(Encoding.Default.GetBytes(uid)),
Convert.ToBase64String(Encoding.Default.GetBytes(gameServer)),
Convert.ToBase64String(Encoding.Default.GetBytes(subid)),
connectionIndex,
clientReceivedSeq
);
string hmac_encode64 = handshake + ":" + NetCrypter.CryptData(handshake);
byte[] hmac_encode64_bits = Encoding.Default.GetBytes(hmac_encode64);
return(hmac_encode64_bits);
}
