C# Ftp Error 503
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Ftp Error 503 Bad Sequence Of Commands
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us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, ftp error 500 just like you, helping each other. Join them; it only takes a minute: Sign up .Net: FtpWebRequest “(503) Bad sequence of commands” error up vote 3 down vote favorite On large files (~200+ MB), I get the 503 error when I read the stream. ftp = (FtpWebRequest)WebRequest.Create(new Uri(address.AbsoluteUri + @"/" + file.Name)); ftp.Credentials = new NetworkCredential(username, ftp error 502 password); ftp.Method = WebRequestMethods.Ftp.DownloadFile; response = (FtpWebResponse)ftp.GetResponse(); Any clues on what I'm doing wrong or a better practice for larger files? c# .net ftp share|improve this question asked Oct 31 '08 at 4:22 Austin Salonen 33.4k981111 add a comment| 5 Answers 5 active oldest votes up vote 4 down vote accepted Do you receive the 503 after every attempt or only subsequent attempts? Have you tried setting the disabling KeepAlive? ftp.KeepAlive = false; I would try a more rubust ftp client library, a basic free one can be at sourceforge. share|improve this answer answered Nov 5 '08 at 1:27 duckworth 3,67231732 Never really found a good solution to my problem but the free one was a good recommendation. –Austin Salonen Dec 30 '08 at 0:05 i was getting the same exception then i set KeepAlive to false and turns out it is very slow, i have done some math on this. and setting the KeepAlive flag to false will increase file tran
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Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it http://stackoverflow.com/questions/252588/net-ftpwebrequest-503-bad-sequence-of-commands-error only takes a minute: Sign up using ftpWebRequest with an error: the remote server returned error 530 not loged in up vote 4 down vote favorite 1 I am trying to use the ftpWebRequest in c# my code is // Get the object used to communicate with the server. FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://192.168.20.10/file.txt"); request.Method = WebRequestMethods.Ftp.UploadFile; // This example assumes http://stackoverflow.com/questions/10352165/using-ftpwebrequest-with-an-error-the-remote-server-returned-error-530-not-loge the FTP site uses anonymous logon. request.Credentials = new NetworkCredential("dev\ftp", "devftp"); // Copy the contents of the file to the request stream. StreamReader sourceStream = new StreamReader(@"\file.txt"); byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd()); sourceStream.Close(); request.ContentLength = fileContents.Length; request.UsePassive = true; Stream requestStream = request.GetRequestStream(); requestStream.Write(fileContents, 0, fileContents.Length); requestStream.Close(); FtpWebResponse response = (FtpWebResponse)request.GetResponse(); Console.WriteLine("Upload File Complete, status {0}", response.StatusDescription); response.Close(); and I get an Error in request.GetRequestStream(); the error is: the remote server returned error 530 not loged in if I try to go in to a browser page and in the url I write ftp://192.168.20.10/ the brows page is asking me for a name and password, I put the same name and password and I see all the files and folders in the ftp folder. can any one help me with this problem? c# ftpwebrequest share|improve this question asked Apr 27 '12 at 14:05 user1361207 36116 add a comment| 3 Answers 3 active oldest votes up vote 13 down vote Shouldn't the line: request.Credentials = new NetworkCredential("dev\ftp", "devftp"); be: request.Credentials = new NetworkCredential("dev\\ftp", "devftp"); or: request.Credentials = new NetworkCredential(@"dev\ftp", "devftp"); I
and get tips & solutions from a community of 418,461 IT Pros & Developers. It's quick & easy. FTPWebRequest failing - URGENT P: n/a BizWorld I am using .NET 2.0 new classed for FTP download purpose. I have https://bytes.com/topic/asp-net/answers/663337-ftpwebrequest-failing-urgent requirement to connect with 3 different FTP and download all files list and see if file exist at my end. if not then i need to download. I am keeping my configuration in XML file so that i can use my same code and i simply iterate on my configuration data. 1st FTP connect works fine but 2nd FTP does not connect and return with following error message. After this failure when my code attemp to for ftp error the 3rd FTP, it works. but it also fail on Download file for 3rd FTP on some files. I could not find any specific reason for this exception. If i make my failing FTP as 1st one, so in general my second FTP request in my loop fails. i tested 3 ftp in internet explorer and they work fine. but in .NET 2.0 new classes i can see these un knonw behaviours. any suggestion on improving code or ftp error 503 setting some other property which i am missing????????????? The remote server returned an error: (503) Bad sequence of commands. I further trace the error line, it is coming on following line, response = reqFTP.GetResponse() here is my code below which works well for 1st FTP Request but it fails on 2nd FTP. reqFTP = System.Net.FtpWebRequest.Create(New Uri("ftp://" + Me.FTP_Address)) reqFTP.KeepAlive = True reqFTP.UseBinary = True reqFTP.Credentials = New System.Net.NetworkCredential(Me.FTP_User, Me.FTP_Password) reqFTP.Method = System.Net.WebRequestMethods.Ftp.ListDirectory response = reqFTP.GetResponse() reader = New System.IO.StreamReader(response.GetResponseStream( )) line = reader.ReadLine() While (Not line Is Nothing) result.Append(line) result.Append(",") line = reader.ReadLine() End While ' to remove the trailing ',' result.Remove(result.ToString().LastIndexOf(","), 1) reader.Close() It is URGENT for me to resolve this issue, otherwise i will have to switch to a 3rd Party FTP component. I was excited about 2.0 new classes and i hope this issue will resolve with some one's feedback. Jun 15 '07 #1 Post Reply Share this Question 1 Reply P: n/a BizWorld I figured it out now. 1st of all i was not setting up KeepAlive property at all. Then i thought i should setup it as TRUE as default may be FALSE. but it did not work out. Then i setup it to FALSE explicitly and now every thing is working fine. Jun 15 '07 #2 This discussion thread is closed Start new discussion Replies have been disabled for this discussion. Similar topics FtpWebRequest: ListDirectoryDe