Uploading file to UNIX host
in [CSharp]
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From: Parrot on 13 Apr 2010 15:42 Does anyone have code to upload a file from a Windows PC to a Unix Host? I tried using the following code and get an error saying 'Unable to cast object type 'System.Net.HttpWebRequest' to type 'System.Net.FtpWebRequest'. This code works when uploading to the internet but not to a Unix host computer. The ftpside variable is a numeric url address such as 10.20.30.115. Are there different parameters to use? string fileName = Directory.GetCurrentDirectory() + "/gctrans.dat"; string ftpsite = ftpserver + "/gctrans.dat"; FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpsite); request.Method = WebRequestMethods.Ftp.UploadFile; StreamReader sourceStream = new StreamReader(fileName); byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd()); sourceStream.Close(); request.ContentLength = fileContents.Length; request.AuthenticationLevel = System.Net.Security.AuthenticationLevel.None; request.Credentials = new NetworkCredential(UserID, UserPassword); Stream requestStream = request.GetRequestStream(); requestStream.Write(fileContents, 0, fileContents.Length); requestStream.Close(); FtpWebResponse response = (FtpWebResponse)request.GetResponse();
From: Harlan Messinger on 13 Apr 2010 16:09 Parrot wrote: > Does anyone have code to upload a file from a Windows PC to a Unix Host? I > tried using the following code and get an error saying 'Unable to cast object > type 'System.Net.HttpWebRequest' to type 'System.Net.FtpWebRequest'. This > code works when uploading to the internet but not to a Unix host computer. > The ftpside variable is a numeric url address such as 10.20.30.115. Are > there different parameters to use? You don't have an ftpside variable. > string fileName = Directory.GetCurrentDirectory() + "/gctrans.dat"; > > string ftpsite = ftpserver + "/gctrans.dat"; If by "ftpside", you meant "ftpsite", then clearly your ftpsite variable is NOT a numeric address such as 10.20.30.115. If by "ftpside", you meant "ftpserver", so that you have ftpserver = "10.20.30.115" and ftpsite = "10.20.30.115/gctrans.dat", then you haven't created a full URL and I would expect either that WebRequest.Create(ftpsite) wouldn't work, or else that it would assume by default that you meant the protocol to be http, in which case it would generate an HttpWebRequest, which isn't an FtpWebRequest and which would produce an error if you tried to cast it into one. If, instead, ftpserver = "ftp://10.20.30.115", then this might work. > > FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpsite); > request.Method = WebRequestMethods.Ftp.UploadFile; > [snip]
From: Parrot on 13 Apr 2010 17:16 Thanks for your reply. When I test the routine I use an ftpsite with a url value of http://www.mysite.com and it works. When my client uses the code he enters the 10.20.30.115 url address. The fact that it works when I upload to my site implies that I do not use an ftp site but rather a server site. Perhaps my client is using a numeric url that is an ftp server rather than an http server. Maybe he should be using a url for an http server rather than an ftp server. Does that make sense? "Harlan Messinger" wrote: > Parrot wrote: > > Does anyone have code to upload a file from a Windows PC to a Unix Host? I > > tried using the following code and get an error saying 'Unable to cast object > > type 'System.Net.HttpWebRequest' to type 'System.Net.FtpWebRequest'. This > > code works when uploading to the internet but not to a Unix host computer. > > The ftpside variable is a numeric url address such as 10.20.30.115. Are > > there different parameters to use? > > You don't have an ftpside variable. > > > string fileName = Directory.GetCurrentDirectory() + "/gctrans.dat"; > > > > string ftpsite = ftpserver + "/gctrans.dat"; > > If by "ftpside", you meant "ftpsite", then clearly your ftpsite variable > is NOT a numeric address such as 10.20.30.115. If by "ftpside", you > meant "ftpserver", so that you have ftpserver = "10.20.30.115" and > ftpsite = "10.20.30.115/gctrans.dat", then you haven't created a full > URL and I would expect either that WebRequest.Create(ftpsite) wouldn't > work, or else that it would assume by default that you meant the > protocol to be http, in which case it would generate an HttpWebRequest, > which isn't an FtpWebRequest and which would produce an error if you > tried to cast it into one. > > If, instead, ftpserver = "ftp://10.20.30.115", then this might work. > > > > > FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpsite); > > request.Method = WebRequestMethods.Ftp.UploadFile; > > > [snip] > . >
From: Parrot on 13 Apr 2010 18:08 I just found out that the user entered an http address rather than an ftp address which probably caused the error. I emailed him back to enter an ftp address and then try it. Since the client is in England I won't know until tomorrow morning if it works. "Harlan Messinger" wrote: > Parrot wrote: > > Does anyone have code to upload a file from a Windows PC to a Unix Host? I > > tried using the following code and get an error saying 'Unable to cast object > > type 'System.Net.HttpWebRequest' to type 'System.Net.FtpWebRequest'. This > > code works when uploading to the internet but not to a Unix host computer. > > The ftpside variable is a numeric url address such as 10.20.30.115. Are > > there different parameters to use? > > You don't have an ftpside variable. > > > string fileName = Directory.GetCurrentDirectory() + "/gctrans.dat"; > > > > string ftpsite = ftpserver + "/gctrans.dat"; > > If by "ftpside", you meant "ftpsite", then clearly your ftpsite variable > is NOT a numeric address such as 10.20.30.115. If by "ftpside", you > meant "ftpserver", so that you have ftpserver = "10.20.30.115" and > ftpsite = "10.20.30.115/gctrans.dat", then you haven't created a full > URL and I would expect either that WebRequest.Create(ftpsite) wouldn't > work, or else that it would assume by default that you meant the > protocol to be http, in which case it would generate an HttpWebRequest, > which isn't an FtpWebRequest and which would produce an error if you > tried to cast it into one. > > If, instead, ftpserver = "ftp://10.20.30.115", then this might work. > > > > > FtpWebRequest request = (FtpWebRequest)WebRequest.Create(ftpsite); > > request.Method = WebRequestMethods.Ftp.UploadFile; > > > [snip] > . >
From: Harlan Messinger on 14 Apr 2010 11:34
Parrot wrote: > Thanks for your reply. When I test the routine I use an ftpsite with a url > value of http://www.mysite.com and it works. When my client uses the code he > enters the 10.20.30.115 url address. The fact that it works when I upload to > my site implies that I do not use an ftp site but rather a server site. It's hard to figure out what's really going on because you're using terminology incorrectly. An FTP server is just as much a server as an HTTP server is. > Perhaps my client is using a numeric url that is an ftp server rather than an > http server. Maybe he should be using a url for an http server rather than > an ftp server. Does that make sense? If you are trying to convert the request to an FtpWebRequest, then there had *better* be an FTP server at the other end to respond to it. |