enum enumProxyType {
  ftpProxyTypeUnknown = 0,
  ftpProxyTypeNone = 1,
  ftpProxyTypeSOCKS5 = 2,
  ftpProxyTypeSOCKS4 = 3,
  ftpProxyTypeSOCKS4A = 4,
  ftpProxyTypeHTTP = 5,
  ftpProxyTypeHTTPNTLM = 6
};