Bug In Mono FTP System.Net.FtpWebRequest

[Dieuzorro]

       
   
    The code below operates under windwos but not Linux file is created, but it is empty.

    I think that the bug is in 'Credentials' because I can download files on server without authentication(Login/Password).

Sorry for my English I am french




    Sub dl(ByVal remoteFile As String, ByVal localFile As String, ByVal username As String, ByVal password As String)



        '1. Create a request: must be in ftp://hostname format,

        '   not just ftp.myhost.com

        Dim URI As String = remoteFile

        Dim ftp As System.Net.FtpWebRequest =  CType(FtpWebRequest.Create(URI), FtpWebRequest)




        '3. Settings and action

        ftp.KeepAlive = False

        'we want a binary transfer, not textual data

        ftp.UseBinary = True

        'Define the action required (in this case, download a file)

        ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile


        '2. Set credentials
        if not (username = "" andalso password = "") then

        ftp.Credentials = New NetworkCredential( username, password)
        end if


        '4. If we were using a method that uploads data e.g. UploadFile

        '   we would open the ftp.GetRequestStream here an send the data



        '5. Get the response to the Ftp request and the associated stream

        Using response As System.Net.FtpWebResponse = CType(ftp.GetResponse, System.Net.FtpWebResponse)

            Using responseStream As IO.Stream = response.GetResponseStream

                'loop to read & write to file

                Using fs As New IO.FileStream(localFile, IO.FileMode.Create)

                    Dim buffer(2047) As Byte

                    Dim read As Integer = 0

                    Do

                        read = responseStream.Read(buffer, 0, buffer.Length)

                        fs.Write(buffer, 0, read)

                    Loop Until read = 0 'see Note(1)

                    responseStream.Close()

                    fs.Flush()

                    fs.Close()

        End Using



    End Sub         End Using

                responseStream.Close()

            End Using

            response.Close()

        End Using



    End Sub

[Dieuzorro]

With my code I was able to download a file on the server "ftp://ftp-developpez.com/konflor/Latex/formation/FormationLatex.pdf" anonymously. But on my local server when I want to download a file with a loggin and a password, my stream "ResponceStream" is empty and there is no error. On Windows everything works.

      Have you got an exemple on mono which connect on an private ftp server? But my code works on windows and ftp server!

    Thanks

Dieuzorro wrote:

       
   
    The code below operates under windwos but not Linux file is created, but it is empty.

    I think that the bug is in 'Credentials' because I can download files on server without authentication(Login/Password).

Sorry for my English I am french




    Sub dl(ByVal remoteFile As String, ByVal localFile As String, ByVal username As String, ByVal password As String)



        '1. Create a request: must be in ftp://hostname format,

        '   not just ftp.myhost.com

        Dim URI As String = remoteFile

        Dim ftp As System.Net.FtpWebRequest =  CType(FtpWebRequest.Create(URI), FtpWebRequest)




        '3. Settings and action

        ftp.KeepAlive = False

        'we want a binary transfer, not textual data

        ftp.UseBinary = True

        'Define the action required (in this case, download a file)

        ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile


        '2. Set credentials
        if not (username = "" andalso password = "") then

        ftp.Credentials = New NetworkCredential( username, password)
        end if


        '4. If we were using a method that uploads data e.g. UploadFile

        '   we would open the ftp.GetRequestStream here an send the data



        '5. Get the response to the Ftp request and the associated stream

        Using response As System.Net.FtpWebResponse = CType(ftp.GetResponse, System.Net.FtpWebResponse)

            Using responseStream As IO.Stream = response.GetResponseStream

                'loop to read & write to file

                Using fs As New IO.FileStream(localFile, IO.FileMode.Create)

                    Dim buffer(2047) As Byte

                    Dim read As Integer = 0

                    Do

                        read = responseStream.Read(buffer, 0, buffer.Length)

                        fs.Write(buffer, 0, read)

                    Loop Until read = 0 'see Note(1)

                    responseStream.Close()

                    fs.Flush()

                    fs.Close()

        End Using



    End Sub         End Using

                responseStream.Close()

            End Using

            response.Close()

        End Using



    End Sub

[Rafael Teixeira]

Check that the FTP server isn't forcing Windows authentication, which isn't supported by Mono, you need a plain FTP server. MS IIS doesn't behave as a plain FTP server with its default configuration, AFAIK.

On Wed, Sep 3, 2008 at 9:23 AM, Dieuzorro <dieuzorro@...> wrote:

With my code I was able to download a file on the server
"ftp://ftp-developpez.com/konflor/Latex/formation/FormationLatex.pdf"
anonymously. But on my local server when I want to download a file with a
loggin and a password, my stream "ResponceStream" is empty and there is no
error. On Windows everything works.

     Have you got an exemple on mono which connect on an private ftp
server? But my code works on windows and ftp server!

   Thanks

Dieuzorro wrote:
>
>
>
>     The code below operates under windwos but not Linux file is created,
> but it is empty.
>
>     I think that the bug is in 'Credentials' because I can download files
> on server without authentication(Login/Password).
>
> Sorry for my English I am french
>
>
>
>
>     Sub dl(ByVal remoteFile As String, ByVal localFile As String, ByVal
> username As String, ByVal password As String)
>
>
>
>         '1. Create a request: must be in ftp://hostname format,
>
>         '   not just ftp.myhost.com
>
>         Dim URI As String = remoteFile
>
>         Dim ftp As System.Net.FtpWebRequest =
> CType(FtpWebRequest.Create(URI), FtpWebRequest)
>
>
>
>
>         '3. Settings and action
>
>         ftp.KeepAlive = False
>
>         'we want a binary transfer, not textual data
>
>         ftp.UseBinary = True
>
>         'Define the action required (in this case, download a file)
>
>         ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile
>
>
>         '2. Set credentials
>         if not (username = "" andalso password = "") then
>
>               ftp.Credentials = New NetworkCredential( username, password)
>         end if
>
>
>         '4. If we were using a method that uploads data e.g. UploadFile
>
>         '   we would open the ftp.GetRequestStream here an send the data
>
>
>
>         '5. Get the response to the Ftp request and the associated stream
>
>         Using response As System.Net.FtpWebResponse =
> CType(ftp.GetResponse, System.Net.FtpWebResponse)
>
>             Using responseStream As IO.Stream = response.GetResponseStream
>
>                 'loop to read & write to file
>
>                 Using fs As New IO.FileStream(localFile,
> IO.FileMode.Create)
>
>                     Dim buffer(2047) As Byte
>
>                     Dim read As Integer = 0
>
>                     Do
>
>                         read = responseStream.Read(buffer, 0,
> buffer.Length)
>
>                         fs.Write(buffer, 0, read)
>
>                     Loop Until read = 0 'see Note(1)
>
>                     responseStream.Close()
>
>                     fs.Flush()
>
>                     fs.Close()
>
>         End Using
>
>
>
>     End Sub         End Using
>
>                 responseStream.Close()
>
>             End Using
>
>             response.Close()
>
>         End Using
>
>
>
>     End Sub
>
>

--

View this message in context: http://www.nabble.com/Bug-In-Mono-FTP-System.Net.FtpWebRequest-tp19272346p19288162.html

Sent from the Mono - Dev mailing list archive at Nabble.com.

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--
Rafael "Monoman" Teixeira
---------------------------------------
"I myself am made entirely of flaws, stitched together with good intentions."
Augusten Burroughs

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[Dieuzorro]

My FTP server is not under windows! It is in a central acquisition Brand Instrument Ganthner.

Solution that I have currently is through a socket with whom I send commands!

[Carlos Alberto]

This is mostly an eror. Please fill a bug for it. See
http://mono-project.com/Bugs

Carlos.

El mié, 03-09-2008 a las 05:23 -0700, Dieuzorro escribió:

> With my code I was able to download a file on the server
> "ftp://ftp-developpez.com/konflor/Latex/formation/FormationLatex.pdf"
> anonymously. But on my local server when I want to download a file with a
> loggin and a password, my stream "ResponceStream" is empty and there is no
> error. On Windows everything works.
>
>       Have you got an exemple on mono which connect on an private ftp
> server? But my code works on windows and ftp server!
>
>     Thanks
>
>
>
> Dieuzorro wrote:
> >
> >
> >    
> >     The code below operates under windwos but not Linux file is created,
> > but it is empty.
> >
> >     I think that the bug is in 'Credentials' because I can download files
> > on server without authentication(Login/Password).
> >
> > Sorry for my English I am french
> >
> >
> >
> >
> >     Sub dl(ByVal remoteFile As String, ByVal localFile As String, ByVal
> > username As String, ByVal password As String)
> >
> >
> >
> >         '1. Create a request: must be in ftp://hostname format,
> >
> >         '   not just ftp.myhost.com
> >
> >         Dim URI As String = remoteFile
> >
> >         Dim ftp As System.Net.FtpWebRequest =
> > CType(FtpWebRequest.Create(URI), FtpWebRequest)
> >
> >
> >
> >
> >         '3. Settings and action
> >
> >         ftp.KeepAlive = False
> >
> >         'we want a binary transfer, not textual data
> >
> >         ftp.UseBinary = True
> >
> >         'Define the action required (in this case, download a file)
> >
> >         ftp.Method = System.Net.WebRequestMethods.Ftp.DownloadFile
> >
> >
> >         '2. Set credentials
> >         if not (username = "" andalso password = "") then
> >
> >         ftp.Credentials = New NetworkCredential( username, password)
> >         end if
> >
> >
> >         '4. If we were using a method that uploads data e.g. UploadFile
> >
> >         '   we would open the ftp.GetRequestStream here an send the data
> >
> >
> >
> >         '5. Get the response to the Ftp request and the associated stream
> >
> >         Using response As System.Net.FtpWebResponse =
> > CType(ftp.GetResponse, System.Net.FtpWebResponse)
> >
> >             Using responseStream As IO.Stream = response.GetResponseStream
> >
> >                 'loop to read & write to file
> >
> >                 Using fs As New IO.FileStream(localFile,
> > IO.FileMode.Create)
> >
> >                     Dim buffer(2047) As Byte
> >
> >                     Dim read As Integer = 0
> >
> >                     Do
> >
> >                         read = responseStream.Read(buffer, 0,
> > buffer.Length)
> >
> >                         fs.Write(buffer, 0, read)
> >
> >                     Loop Until read = 0 'see Note(1)
> >
> >                     responseStream.Close()
> >
> >                     fs.Flush()
> >
> >                     fs.Close()
> >
> >         End Using
> >
> >
> >
> >     End Sub         End Using
> >
> >                 responseStream.Close()
> >
> >             End Using
> >
> >             response.Close()
> >
> >         End Using
> >
> >
> >
> >     End Sub
> >
> >
>

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