message: added check for hand shake
diff: @@ -297,7 +297,19 @@ void WdmReader::InitTransports()
  void WdmReader::Handshake()
  {
  transport::FileFStream ipstream(m_MPIComm, m_DebugMode);
  + bool opened = false;
  + while(opened == false)
  + {
  + try
  + {
  ipstream.Open(".StagingHandshake", Mode::Read);
  + opened = true;
  + }
  + catch (...)
  + {
  + std::this_thread::sleep_for(std::chrono::milliseconds(1));
  + }
  + }
  auto size = ipstream.GetSize();
  std::vector<char> address(size);
  ipstream.Read(address.data(), size);
  