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FtpWebRequest.GetRequestStream hang up?

Posted By:      Posted Date: December 04, 2010    Points: 0   Category :.NET Framework

I use FtpWebRequest to upload a file to a ftp server. It works for a local server but not a remote server.

It hang up for a while when I debug to the call .GetRequestStream, then threw an exception which did not help becuase it just said "System error".

Here is the StackTrace:

 at System.Net.PooledStream.PrePush(Object expectedOwner) at System.Net.ConnectionPool.PutConnection(PooledStream pooledStream, Object owningObject, Int32 creationTimeout, Boolean canReuse) at System.Net.FtpWebRequest.FinishRequestStage(RequestStage stage) at System.Net.FtpWebRequest.SyncRequestCallback(Object obj) at System.Net.FtpWebRequest.RequestCallback(Object obj) at System.Net.CommandStream.Dispose(Boolean disposing) at System.IO.Stream.Close() at System.IO.Stream.Dispose() at System.Net.ConnectionPool.Destroy(PooledStream pooledStream) at System.Net.ConnectionPool.PutConnection(PooledStream pooledStream, Object owningObject, Int32 creationTimeout, Boolean canReuse) at System.Net.FtpWebRequest.AttemptedRecovery(Exception e) at System.Net.FtpWebRequest.SubmitRequest(Boolean async)

It works fine when I use FileZilla to upload a file.

I tried to change .UsePassive and .Proxy.

is it a ftp server configuration issue? I believe it is a ms ftp server.


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