/// <summary>
/// Check an FTP Connection.
/// </summary>
/// <param name="ftpWebOperation">Web Operation.</param>
/// <param name="username">Ftp Login Username.</param>
/// <param name="password">Ftp Login Password.</param>
/// <param name="ftpMode">Ftp Transfer Mode.</param>
/// <exception cref="ArgumentException">Throws if ftpWebOperation is null.</exception>
public void FtpCheckConnection(IFtpWebOperation ftpWebOperation, string username, string password, FtpType ftpMode)
{
if (ftpWebOperation == null) throw new ArgumentNullException("ftpWebOperation");
ftpWebOperation.FtpOperationRequest.CachePolicy = new RequestCachePolicy(RequestCacheLevel.NoCacheNoStore);
ftpWebOperation.FtpOperationRequest.KeepAlive = false; // Close the Request
ftpWebOperation.FtpOperationRequest.Timeout = 5000; // 5 second timeout
SetFtpMode(ftpWebOperation.FtpOperationRequest, ftpMode);
SetNetworkCredentials(ftpWebOperation.OperationRequest.Request, username, password);
ftpWebOperation.CheckConnection();
}
