ftp directory listing timeout. Huge number of subdirs

问题

Is there any way to deal with situation when you need to get list of all directories on a FTP server, where the number of directories is so big that it takes too long to get it and operation fails with timeout?

I wonder if there are some libraries that let you do that somehow?

回答1:

Try something like this

        FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(uri);
        ftpRequest.Credentials = new NetworkCredential("anonymous","yourName@SomeDomain.com");//replace with your Creds
        ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory;
        FtpWebResponse response = (FtpWebResponse)ftpRequest.GetResponse();
        StreamReader streamReader = new StreamReader(response.GetResponseStream());

        List<string> directories = new List<string>();

        string line = streamReader.ReadLine();
        while (!string.IsNullOrEmpty(line))
        {
            directories.Add(line);
            line = streamReader.ReadLine();
        }

        streamReader.Close();

        // also add some code that will Dispose of the StreamReader object
        // something like ((IDisposable)streanReader).Dispose();
        // Dispose of the List<string> as well 
           line = null;

来源：https://stackoverflow.com/questions/9230485/ftp-directory-listing-timeout-huge-number-of-subdirs