public override void Start()
{
var sessionLogConfiguration = new SessionLogEntry.TConfiguration()
{
FileLength = -1,
Filename = m_Filename,
IsUpload = false,
LocalEndPoint = m_LocalEndPoint,
RemoteEndPoint = m_RemoteEndPoint,
StartTime = DateTime.Now,
WindowSize = m_WindowSize
};
try
{
lock (m_Lock)
{
try
{
m_Stream = m_Parent.GetReadStream(m_Filename);
m_Length = m_Stream.Length;
sessionLogConfiguration.FileLength = m_Length;
m_Position = 0;
}
catch (Exception e)
{
TFTPServer.SendError(m_Socket, m_RemoteEndPoint, TFTPServer.ErrorCode.FileNotFound, e.Message);
throw;
}
finally
{
m_SessionLog = m_Parent.SessionLog.CreateSession(sessionLogConfiguration);
}
// handle tsize option
if (m_RequestedOptions.ContainsKey(TFTPServer.Option_TransferSize))
{
if (m_Length >= 0)
{
m_AcceptedOptions.Add(TFTPServer.Option_TransferSize, m_Length.ToString());
}
}
if (m_AcceptedOptions.Count > 0)
{
m_BlockNumber = 0;
SendOptionsAck();
}
else
{
m_BlockNumber = 1;
SendData();
}
}
}
catch (Exception e)
{
Stop(true, e);
}
}
private void OnTimer(object state)
{
bool notify = false;
lock (m_Lock)
{
if (!m_Disposed)
{
if (m_BlockRetry < m_Parent.m_MaxRetries)
{
m_BlockRetry++;
SendResponse();
}
else
{
TFTPServer.SendError(m_Socket, m_RemoteEndPoint, TFTPServer.ErrorCode.Undefined, "Timeout");
notify = true;
}
}
}
if (notify)
{
Stop(true, new TimeoutException("Remote side didn't respond in time"));
}
}
public override void Start()
{
var sessionLogConfiguration = new SessionLogEntry.TConfiguration()
{
FileLength = -1,
Filename = m_Filename,
IsUpload = true,
LocalEndPoint = m_LocalEndPoint,
RemoteEndPoint = m_RemoteEndPoint,
StartTime = DateTime.Now,
WindowSize = 1
};
try
{
lock (m_Lock)
{
try
{
m_Length = m_RequestedOptions.ContainsKey(TFTPServer.Option_TransferSize) ? Int64.Parse(m_RequestedOptions[TFTPServer.Option_TransferSize]) : -1;
sessionLogConfiguration.FileLength = m_Length;
m_Stream = m_Parent.GetWriteStream(m_Filename, m_Length);
m_Position = 0;
}
catch (Exception e)
{
TFTPServer.SendError(m_Socket, m_RemoteEndPoint, TFTPServer.ErrorCode.FileNotFound, e.Message);
throw;
}
finally
{
// always create a SessionLog (even if the file couldn't be opened), so Stop() will have somewhere to store its errors
m_SessionLog = m_Parent.SessionLog.CreateSession(sessionLogConfiguration);
}
// handle tsize option
if (m_RequestedOptions.ContainsKey(TFTPServer.Option_TransferSize))
{
// rfc2349: in Write Request packets, the size of the file, in octets, is specified in the
// request and echoed back in the OACK
m_AcceptedOptions.Add(TFTPServer.Option_TransferSize, m_RequestedOptions[TFTPServer.Option_TransferSize]);
}
if (m_AcceptedOptions.Count > 0)
{
// send options ack, client will respond with block number 1
m_Window = TFTPServer.GetOptionsAckPacket(m_AcceptedOptions);
}
else
{
// send ack for current block, client will respond with next block
m_Window = TFTPServer.GetDataAckPacket(m_BlockNumber);
}
TFTPServer.Send(m_Socket, m_RemoteEndPoint, m_Window);
m_BlockRetry = 0;
StartTimer();
}
}
catch (Exception e)
{
Stop(true, e);
}
}
