private void ConnectionOnMessageReceived(object o, byte[] data)
{
byte[] msg;
try
{
msg = _protocolHelper.DecryptData(data);
}
catch (Exception e)
{
AddLog("Message decrypt error!\nException: " + e);
return;
}
var res = _protocol.Parse(msg, out _index, out _resultData);
if (res != ProtocolResult.Ack && res != ProtocolResult.None && res != ProtocolResult.AckAck)
{
AddLog("NACK: " + res);
}
else if (res == ProtocolResult.Ack)
{
var cmd = _protocol.CreateAck();
Connection.Send(_protocolHelper.EncryptMessage(cmd));
}
}
public void ReadFile()
{
if (!string.IsNullOrEmpty(SelectedFile))
{
var cmd = _protocol.CreateReadFile(SelectedFile);
var enc = _protocolHelper.EncryptMessage(cmd);
var ackEnc = Connection.SendReceive(enc);
if (ackEnc == null)
{
AddLog("No anwser");
return;
}
byte idxCheck = 0;
List <byte> memory = new List <byte>();
while (true)
{
var ack = _protocolHelper.DecryptData(ackEnc);
var result = _protocol.Parse(ack, out _index, out _resultData);
if (result == ProtocolResult.Ack)
{
if (idxCheck != _index)
{
AddLog("Read File index error!");
break;
}
idxCheck++;
memory.AddRange(_resultData);
cmd = _protocol.CreateAck();
enc = _protocolHelper.EncryptMessage(cmd);
ackEnc = Connection.SendReceive(enc);
if (ackEnc == null)
{
AddLog("No anwser");
break;
}
}
else if (result == ProtocolResult.FileEnd)
{
cmd = _protocol.CreateAck();
enc = _protocolHelper.EncryptMessage(cmd);
Connection.Send(enc);
var sfd = new SaveFileDialog();
sfd.FileName = SelectedFile;
if (sfd.ShowDialog() == true)
{
File.WriteAllBytes(sfd.FileName, memory.ToArray());
}
break;
}
else
{
AddLog("Read File failed -> " + result);
break;
}
}
}
}