FtpWebRequest GetResponse throw The server committed a protocol violation :(

Hello.

I have some trouble with FtpWebRequest class.

I use it for connection to two ftp servers

The first server is working perfectly, but when i use the same programm to connect to another one the "The underlying connection was closed: The server committed a protocol violation." exception is thrown when I call GetResponse method.

I found only one difference between servers.

The first server returns:

220 Hello k-net ftp server

The second FTP return the same banner but ON RUSSIAN Lang!!!

220 ! !

Is any UseUnsafeHeaderParsing property exists for FTPWebRequest, like for HTTP

P.S> I'am not using SSL!

The sources is here:

///...

FtpWebRequest listRequest =

(FtpWebRequest)WebRequest.Create(listUrl);

listRequest.UsePassive = false; //true

listRequest.Method = WebRequestMethods.Ftp.ListDirectory;

FtpWebResponse listResponse =

(FtpWebResponse)listRequest.GetResponse(); //WebException is HERE!!!

reader = new StreamReader(listResponse.GetResponseStream());

while (!reader.EndOfStream)

///...

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FtpWebRequest GetResponse throw The server committed a protocol violation :(

get_rad
Has a work around been identified and/or a problem fix provided
ebj
Hi Mike,

Any hopes of getting a fix anytime soon I am also having the problem.

Thanks,

marion
AbelMorelos
I'll dig into this tomorrow - thanks for the follow up post.
JustJFe

Spasibo :)
teone
Is the server reachable from the internet so we can try to repro the issue If not, can you provide a trace of the issue Instructions for how to collect a trace are availalbe here: http://blogs.msdn.com/dgorti/archive/2005/09/18/471003.aspx
t2nolan

OK. I configure the extarnal ftp to the same configuration as my and exception still there!

URL with login/pass:

ftp://throw:throw@devgroup.mephist.ru

The server banner message contains russian symbols.

FTPWebRequest is dead :(
j1rider

I am having trouble connecting to a remote FTP server.

I am getting the error (The remote server returned an error: (530) Not logged in.).

But I can connect to this FTP server from the IE using the same credentials.

Any help would be appreciated.

-Arul
Josh Kinder
Give me 1 more day :)
jcman
We have confirmed there is an error within FtpWebRequest. Thank you for your feedback. We will work to get this corrected.
Amaan
Hello Mike,

We are currently encountering exactly the same problem: FtpWebRequest GetResponse throws The server committed a protocol violation

Because you have confirmed there is an error within FtpWebRequest I was wondering whether this problem has already been resolved and a new version of FtpWebRequest is available
If not, is there some sort of workaround available

Thanks a lot,
Bas Pronk
Zurk
Hi Mike

Do you know of a fix for this error I am getting the same error (i.e. The underlying connection was closed: The server committed a protocol violation.) when connecting to a remote FTP server. here is a snippet from my error logs.

---------------------------------------------------------------------------------------
7/6/2006 7:09:14 AM
Source Exception: System - SyncRequestCallback
Message: The underlying connection was closed: The server committed a protocol violation.
Trace: at System.Net.FtpWebRequest.SyncRequestCallback(Object obj)
at System.Net.FtpWebRequest.RequestCallback(Object obj)
at System.Net.CommandStream.Abort(Exception e)
at System.Net.FtpWebRequest.FinishRequestStage(RequestStage stage)
at System.Net.FtpWebRequest.GetResponse()
at MSS.FTP.FTPclient.GetStringResponse(FtpWebRequest pFTP)

---------------------------------------------------------------------------------------

---------------------------------------------------------------------------------------
7/6/2006 7:09:14 AM
Source Exception: FTP - ListDirectoryDetail
Message: Object reference not set to an instance of an object.
Trace: at MSS.FTP.FTPclient.ListDirectoryDetail(String pDirectory)

Additional Info
Error occoured while attempting a detailed directory listing of /DLD/NP1
---------------------------------------------------------------------------------------
daftest

. Many thanks for your attention!

Good luck!
Darren Parker - MSFT
I connected last night, received the exception and took some logs/traces. I'll post our findings once we get a minute to dig through the traces.
Darren Stones

Hello!

One question...

Is the problem already resolved

Can I change the banner of FTP back to English ;)
FtpWebRequest GetResponse throw The server committed a protocol violation :(

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