問題描述

我在我的項目中使用 FluentFTP lib 來通過 TLS 使用 FTP，但這里有些麻煩.

I have used FluentFTP lib im my project to work with FTP via TLS, but some trouble here.

這段代碼運行良好:

using (var conn = new FtpClient("adress", "user", "password"))
{
    conn.EncryptionMode = FtpEncryptionMode.Explicit;
    conn.ValidateAnyCertificate = true;
    conn.Connect();

    conn.CreateDirectory("/test/path/that/should/be/created", true);
}

并創(chuàng)建了目錄.但在其他示例中，它效果不佳.

And directory were created. But in other examples it not working good.

第一個示例(日志文件 - https://pastebin.com/jNyZ3fmD):

First exmple (logfile - https://pastebin.com/jNyZ3fmD):

public static void DownloadFile()
{
    using (var conn = new FtpClient("adress", "user", "password"))
    {
        conn.EncryptionMode = FtpEncryptionMode.Explicit;
        conn.ValidateAnyCertificate = true;
            conn.Connect();

        conn.DownloadFile("localPath", "ftpPath", FtpLocalExists.Overwrite, FtpVerify.Retry);

    }
}

我有錯誤:

"將文件上傳到服務(wù)器時出錯.請參閱 InnerException 了解更多信息."IOException:身份驗證失敗，因為遠程方已關(guān)閉傳輸流

"Error while uploading the file to the server. See InnerException for more info." IOException: Authentication failed because the remote party has closed the transport stream

嘗試使用以下代碼從 FTP 獲取文件/目錄列表在控制臺中不返回任何內(nèi)容(日志文件 - https://pastebin.com/V8AiLs8k):

Trying to get file/dir-list from FTP using code below return nothing in console (logfile - https://pastebin.com/V8AiLs8k):

using (var conn = new FtpClient("adress", "user", "password"))
{
    //conn.Connect();
    conn.EncryptionMode = FtpEncryptionMode.Explicit;
    conn.ValidateCertificate += new FtpSslValidation(OnValidateCertificate);
    conn.Connect();

    // get a recursive listing of the files & folders in a specific folder
    foreach (var item in conn.GetListing())
    {
        switch (item.Type)
        {

            case FtpFileSystemObjectType.Directory:

                Console.WriteLine("Directory!  " + item.FullName);
                Console.WriteLine("Modified date:  " + conn.GetModifiedTime(item.FullName));

                break;

            case FtpFileSystemObjectType.File:

                Console.WriteLine("File!  " + item.FullName);
                Console.WriteLine("File size:  " + conn.GetFileSize(item.FullName));
                Console.WriteLine("Modified date:  " + conn.GetModifiedTime(item.FullName));
                Console.WriteLine("Chmod:  " + conn.GetChmod(item.FullName));

                break;

            case FtpFileSystemObjectType.Link:
                break;
        }
        Console.WriteLine(item);
    }

}

用戶有權(quán)下載、創(chuàng)建和刪除文件.但是我只能在服務(wù)器上創(chuàng)建一個目錄.

The user has the privilege to download, create and delete files. But I can only make a dir on server.

推薦答案

好像是因為 FluenFTP 缺少 TLS 會話恢復(fù)支持:
https://github.com/robinrodricks/FluentFTP/issues/347

It seems to be due to a lack of TLS session resumption support in FluenFTP:
https://github.com/robinrodricks/FluentFTP/issues/347

如果您與服務(wù)器所有者確認(rèn)，您將不得不切換到另一個 FTP 庫.對于類似的問題(對于隱式 TLS，當(dāng)您使用顯式 TLS 時)請參閱:
在 C# 中使用 TLS 會話重用將文件上傳到隱式 FTPS 服務(wù)器

If you confirm that with the server owner, you will have to switch to another FTP library. For a similar question (for an implicit TLS, while you are using an explicit TLS) see:
Upload file to implicit FTPS server in C# with TLS session reuse

或者要求所有者關(guān)閉會話恢復(fù)要求(盡管從安全角度來看這很糟糕).

Or ask the owner to turn off session resumption requirement (though that's bad from a security point of view).

有關(guān)該問題的更多參考，另請參閱可以使用 FileZilla 或 WinSCP 連接到 FTP，但不能使用 FtpWebRequest 或 FluentFTP.

For more references about the problem, see also Can connect to FTP using FileZilla or WinSCP, but not with FtpWebRequest or FluentFTP.

這篇關(guān)于“驗證失敗，因為遠程方已關(guān)閉傳輸流"使用 FluentFTP 通過 TLS/SSL 向/從 FTP 服務(wù)器傳輸數(shù)據(jù)時的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！