//no decryption, no mac
private void ReadPacketFromPlainStream()
{
int offset = _buffer.Offset;
int packet_length = SSHUtil.ReadInt32(_buffer.Data, offset);
if (packet_length <= 0 || packet_length >= MAX_PACKET_LENGTH)
{
throw new SSHException(String.Format("packet size {0} is invalid", packet_length));
}
offset += PACKET_LENGTH_FIELD_LEN;
byte padding_length = _buffer.Data[offset++];
if (padding_length < 4)
{
throw new SSHException(String.Format("padding length {0} is invalid", padding_length));
}
int payload_length = packet_length - 1 - padding_length;
Array.Copy(_buffer.Data, offset, _packet.Data, 0, payload_length);
_packet.SetLength(0, payload_length);
_buffer.Consume(packet_length + PACKET_LENGTH_FIELD_LEN);
}
public void StartReceivingThread(Action <DataFragment> onDataCallback, Action onClosedCallback)
{
if (_socket == null || _receivingThread != null)
{
return;
}
_receivingThread = new Thread(() => {
byte[] buffer = new byte[0x20000];
DataFragment dataFrag = new DataFragment(buffer, 0, 0);
try {
while (true)
{
int received = _socket.Receive(buffer, 0, buffer.Length, SocketFlags.None);
if (received > 0)
{
dataFrag.SetLength(0, received);
onDataCallback(dataFrag);
}
}
}
catch (Exception e) {
if (!_shutdown)
{
System.Diagnostics.Debug.WriteLine(e.Message);
System.Diagnostics.Debug.WriteLine(e.StackTrace);
}
if (!_socket.Connected && !_shutdown)
{
// closed by the peer
onClosedCallback();
}
}
});
_receivingThread.Start();
}
