Created attachment 1343 [details]
UdpEchoClient::SetFill (uint8_t *fill, ...)  patch

Function UdpEchoClient::SetFill (uint8_t *fill, uint32_t fillSize, uint32_t dataSize) do not set packet size attribute correctly. When "fillSize >= dataSize", m_size is not set.
A solution  is to add statement "m_size = dataSize " before statement "return" in "if (fillSize >= dataSize) { ...}" statement block. 

if (fillSize >= dataSize)
  {
    memcpy (m_data, fill, dataSize);
    m_size = dataSize; // Add this statement
    return;
  }