Ftp ошибка 227 entering passive mode

Доброго времени суток. Собственно, сабж в титле.

Сама ошибка выглядит по меньшей мере непонятно:

«Удаленный сервер возвратил ошибку: 227 Entering Passive Mode
(192,168,1,136,39,43)»

при чём тут ошибка? мне же и нужно в пассивный режим зайти… ладно, едем дальше.

Опыта работы с ftp нет, нашел какие то исходники, собрал проект, выдаётся вышеупомянутое исключение. Упростил код до невозможности, ошибка осталась. Странность ещё в том, что в totalCommander соединение удаётся,

    private void btn_connect_Click_2(object sender, RoutedEventArgs e)
    {
        FtpWebRequest requestDir = (FtpWebRequest)FtpWebRequest.Create("ftp://192.168.1.136/");
        requestDir.Credentials = new NetworkCredential("username", "password");
        requestDir.Method = "LIST";
        requestDir.UseBinary = true;
        requestDir.EnableSsl = false;
        requestDir.UsePassive = true;

        try
        {
            WebResponse response = requestDir.GetResponse();
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString() + ": n" + ex.Message);
        }
    }

пробовал так же ставить

requestDir.UsePassive = false;

Получил ошибку 500, синтаксическую, мол, команда не опознана.
Буду благодарен, если мне объяснят, что я делаю не так)

Доброго времени суток. Собственно, сабж в титле.

Сама ошибка выглядит по меньшей мере непонятно:

«Удаленный сервер возвратил ошибку: 227 Entering Passive Mode (192,168,1,136,39,43)»

при чём тут ошибка? мне же и нужно в пассивный режим зайти… ладно, едем дальше.

Опыта работы с ftp нет, нашел какие то исходники, собрал проект, выдаётся вышеупомянутое исключение. Упростил код до невозможности, ошибка осталась. Странность ещё в том, что в totalCommander соединение удаётся,

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         private void btn_connect_Click_2(object sender, RoutedEventArgs e)
        {
            FtpWebRequest requestDir = (FtpWebRequest)FtpWebRequest.Create("ftp://192.168.1.136/");
            requestDir.Credentials = new NetworkCredential("uploadhis", "111111");
            requestDir.Method = "LIST";
            requestDir.UseBinary = true;
            requestDir.EnableSsl = false;
            requestDir.UsePassive = true;
 
            try
            {
                WebResponse response = requestDir.GetResponse();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString() + ": n" + ex.Message);
            }
        }

пробовал так же ставить requestDir.UsePassive = false;, тогда ошибка 500, синтаксическая, мол, команда не опознана.
Буду благодарен, если мне объяснят, что я делаю не так)

I am having a problem connecting a Windows service to an FTP site.

I inherited a Windows service from another developer. The service connects to a 3rd party server, downloads a csv file and then processes it. For some reason, the service stopped working (well over a year ago, before I was given the project).

So I went back to basics, created a console app and tried the connection/ file download function only in that app. I have tried many different methods to connect to the FTP, but all of them return the same error to my application:

The remote server returned an error: 227 Entering Passive Mode ()

This is one of the many methods I’ve tried:

FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftpaddress/filename.csv");
        request.Method = WebRequestMethods.Ftp.DownloadFile;

        request.Credentials = new NetworkCredential("username", "password");

        request.UsePassive = true;

        FtpWebResponse response = (FtpWebResponse)request.GetResponse();

        Stream responseStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(responseStream);
        Console.WriteLine(reader.ReadToEnd());

        Console.WriteLine("Download Complete, status {0}", response.StatusDescription);

        reader.Close();
        response.Close(); 

But it falls down on this part:

FtpWebResponse response = (FtpWebResponse)request.GetResponse();

I read in several forums that setting the UsePassive property to False fixes these errors, but all that happened to me was that I got a syntax error instead, as below:

The remote server returned an error: (500) Syntax error, command unrecognized.

The file is hosted on a 3rd party FTP server I have no control over. I can paste the URL into a browser, and I am prompted for a username and password, which then allows me through and I can download the file.

To eliminate our firewall as the cause of the problem, I ran the app on both the internal network and the WiFi (which isn’t behind the firewall), and it makes no difference. I also connected through FileZilla in Default, Active and Passive modes, and it worked every time. So no problem there.

So then I ran Wireshark. Here is an image of the wire capture using Filezilla (i.e. a successful one), in Passive mode:

And here is the capture when connecting (and failing) using the app, with passive set to true:

So as you can see in the failed connection above, I can log in to the server just fine. Then for whatever reason an extra request is sent, namely «TYPE I», which prompts the response of «Switching to binary mode.» The below that, I get the following:

500 oops: vsf_sysutil_recv_peek: no data

In addition, I also ran it again after setting the Passive property to false, and this is what I got that time:

So my question is twofold;

1, if I somehow get past the UsePassive issue and set that property to false, will that solve my problem?

2, ignoring the UsePassive property, why can’t I download the file from the app, but can from everywhere else?

I am having a problem connecting a Windows service to an FTP site.

I inherited a Windows service from another developer. The service connects to a 3rd party server, downloads a csv file and then processes it. For some reason, the service stopped working (well over a year ago, before I was given the project).

So I went back to basics, created a console app and tried the connection/ file download function only in that app. I have tried many different methods to connect to the FTP, but all of them return the same error to my application:

The remote server returned an error: 227 Entering Passive Mode ()

This is one of the many methods I’ve tried:

FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://ftpaddress/filename.csv");
        request.Method = WebRequestMethods.Ftp.DownloadFile;

        request.Credentials = new NetworkCredential("username", "password");

        request.UsePassive = true;

        FtpWebResponse response = (FtpWebResponse)request.GetResponse();

        Stream responseStream = response.GetResponseStream();
        StreamReader reader = new StreamReader(responseStream);
        Console.WriteLine(reader.ReadToEnd());

        Console.WriteLine("Download Complete, status {0}", response.StatusDescription);

        reader.Close();
        response.Close(); 

But it falls down on this part:

FtpWebResponse response = (FtpWebResponse)request.GetResponse();

I read in several forums that setting the UsePassive property to False fixes these errors, but all that happened to me was that I got a syntax error instead, as below:

The remote server returned an error: (500) Syntax error, command unrecognized.

The file is hosted on a 3rd party FTP server I have no control over. I can paste the URL into a browser, and I am prompted for a username and password, which then allows me through and I can download the file.

To eliminate our firewall as the cause of the problem, I ran the app on both the internal network and the WiFi (which isn’t behind the firewall), and it makes no difference. I also connected through FileZilla in Default, Active and Passive modes, and it worked every time. So no problem there.

So then I ran Wireshark. Here is an image of the wire capture using Filezilla (i.e. a successful one), in Passive mode:

And here is the capture when connecting (and failing) using the app, with passive set to true:

So as you can see in the failed connection above, I can log in to the server just fine. Then for whatever reason an extra request is sent, namely «TYPE I», which prompts the response of «Switching to binary mode.» The below that, I get the following:

500 oops: vsf_sysutil_recv_peek: no data

In addition, I also ran it again after setting the Passive property to false, and this is what I got that time:

So my question is twofold;

1, if I somehow get past the UsePassive issue and set that property to false, will that solve my problem?

2, ignoring the UsePassive property, why can’t I download the file from the app, but can from everywhere else?

i’m trying to upload file to ftp server. tried some code samples, but alway getting this error, entering passive mode. for example, i can create a directory with this code

FtpWebRequest reqFTP;
try
{
    // dirName = name of the directory to create.
    reqFTP = (FtpWebRequest)FtpWebRequest.Create(
             new Uri("ftp://" + ftpServerIP + "/" + dirName));
    reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
    reqFTP.UseBinary = true;
    reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
    reqFTP.UsePassive = false;
    FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
    Stream ftpStream = response.GetResponseStream();

    ftpStream.Close();
    response.Close();
}
catch (Exception ex)
{
    MessageBox.Show(ex.Message);
}

or for example i can rename a file. but cannot upload file with this code

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(
         "ftp://" + ftpServerIP + "/" + fileInf.Name));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.ContentLength = fileInf.Length;

int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;

FileStream fs = fileInf.OpenRead();

try
{
    Stream strm = reqFTP.GetRequestStream();
    contentLen = fs.Read(buff, 0, buffLength);
    while (contentLen != 0)
    {
        strm.Write(buff, 0, contentLen);
        contentLen = fs.Read(buff, 0, buffLength);
    }
    strm.Close();
    fs.Close();
}
catch(Exception ex)
{
    MessageBox.Show(ex.Message, "Upload Error");
}

getting exception at reqFTP.GetRequestStream().

If I use reqFTP.UsePassive=false then i get “

The remote server returned an error: (500) Syntax error, command unrecognized”.

What should i do?

i’m trying to upload file to ftp server. tried some code samples, but alway getting this error, entering passive mode. for example, i can create a directory with this code

FtpWebRequest reqFTP;
try
{
    // dirName = name of the directory to create.
    reqFTP = (FtpWebRequest)FtpWebRequest.Create(
             new Uri("ftp://" + ftpServerIP + "/" + dirName));
    reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
    reqFTP.UseBinary = true;
    reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
    reqFTP.UsePassive = false;
    FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
    Stream ftpStream = response.GetResponseStream();

    ftpStream.Close();
    response.Close();
}
catch (Exception ex)
{
    MessageBox.Show(ex.Message);
}

or for example i can rename a file. but cannot upload file with this code

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(
         "ftp://" + ftpServerIP + "/" + fileInf.Name));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.ContentLength = fileInf.Length;

int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;

FileStream fs = fileInf.OpenRead();

try
{
    Stream strm = reqFTP.GetRequestStream();
    contentLen = fs.Read(buff, 0, buffLength);
    while (contentLen != 0)
    {
        strm.Write(buff, 0, contentLen);
        contentLen = fs.Read(buff, 0, buffLength);
    }
    strm.Close();
    fs.Close();
}
catch(Exception ex)
{
    MessageBox.Show(ex.Message, "Upload Error");
}

getting exception at reqFTP.GetRequestStream().

If I use reqFTP.UsePassive=false then i get “

The remote server returned an error: (500) Syntax error, command unrecognized”.

What should i do?

Сайт создал без проблем,решил подключиться к ftp для закачи большого кол-во файлов,(прошло более 5 часов) подключиться не удаеться не через filezila не через total comander ошибка в filezila

Статус:    Определение IP-адреса для moraygames1.clan.su
Статус:    Соединяюсь с 213.174.157.151:21…
Статус:    Соединение установлено, ожидание приглашения…
Статус:    Сервер не поддерживает символы не ASCII.
Статус:    Авторизовались
Статус:    Получение списка каталогов…
Команда:    PWD
Ответ:    257 «/» is your current location
Команда:    TYPE I
Ответ:    200 TYPE is now 8-bit binary
Команда:    PASV
Ответ:    227 Entering Passive Mode (213,174,157,151,149,94)
Команда:    MLSD
Ошибка:    Соединение прервано после 10 секунд неактивности
Ошибка:    Не удалось получить список каталогов
Статус:    Отключен от сервера
Статус:    Определение IP-адреса для moraygames1.clan.su
Статус:    Соединяюсь с 213.174.157.151:21…
Статус:    Соединение установлено, ожидание приглашения…
Статус:    Сервер не поддерживает символы не ASCII.
Статус:    Авторизовались
Статус:    Получение списка каталогов…
Команда:    PWD
Ответ:    257 «/» is your current location
Команда:    TYPE I
Ответ:    200 TYPE is now 8-bit binary
Команда:    PASV
Ответ:    227 Entering Passive Mode (213,174,157,151,159,241)
Команда:    MLSD
Ошибка:    Соединение прервано после 10 секунд неактивности
Ошибка:    Не удалось получить список каталогов

(Возможно что то лишнее скопировал)

Надеюсь вы сможете мне помочь!