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Topic review

martin

Re: Stream File With FTP

2022-06-02

Your code makes no sense. First, the Session.GetFile does not return MemoryStream. It returns a custom implementation of the Stream interface. And it indeed does not implement a writable Position property.
Second, the returned stream is at the beginning. There's no need to seek it.

juhl

Re: Stream File With FTP

2022-05-31 13:56

Hi Martin

Code: (not C# syntax but .NET code)

FtpSessionOptions := FtpSessionOptions.SessionOptions;
FtpSessionOptions.Protocol := FtpProtocol.Ftp;
FtpSessionOptions.HostName := Host;
FtpSessionOptions.UserName := Username;
FtpSessionOptions.Password := Password;
FtpSessionOptions.FtpSecure := FtpSecure.Explicit;
FtpSessionOptions.GiveUpSecurityAndAcceptAnyTlsHostCertificate := TRUE;
 
FtpSession := FtpSession.Session;
FtpSession.ExecutablePath(ExePath);
FtpSession.Open(FtpSessionOptions);
 
MemoryStream := FtpSession.GetFile(Path, FtpTransferOptions);
MemoryStream.Position := 0; // Gives the error

Error is:

WinSCP.PipeStream.Position failed: Specified method is not supported.

I need to seek back to get the file data from MemoryStream.

martin

Re: Stream File With FTP

2022-05-30

@juhl: Please show us your code and complete exception stack trace.

juhl

Re: Stream File With FTP

2022-05-30 13:08

Hi Martin

I'm trying out the new stream method, and the GetFile seems to work.
But to get the content of the Stream (I use MemoryStream), I do a Position = 0, to get to the start of the stream, but this operation is not supported.

Any good ideas? :-)

martin

Re: Stream File With FTP

2022-05-26

@abesab: Streaming with FTP is supported since WinSCP 5.20.3:
Issue 1945 – Streaming support in .NET assembly for FTP protocol

abesab

Stream File With FTP

2022-05-24 16:13

Is there any way to upload a stream with FTP without saving it first to a temporary file?

nikolasd

Re: Using Session.PutFile() with stream, returns error Operation not supported

2021-06-15 13:09

Unfortunately, I am using FTPS. Thank you for clarifying it.

martin

Re: Using Session.PutFile() with stream, returns error Operation not supported

2021-06-15

What protocol are you using? The streaming is supported with the SFTP protocol only. With other protocols, you need to save the data to (temporary) file before uploading.

nikolasd

Using Session.PutFile() with stream, returns error Operation not supported

2021-06-14 19:49

I am using the latest RC release of WinSCP NuGet package and I am trying to implement PutFile

using (var session = new Session()) {
    if (!session.Opened)
        session.Open(sessionOptions);
 
    var transferOptions = new TransferOptions {
        TransferMode = TransferMode.Binary,
        OverwriteMode = OverwriteMode.Overwrite,   
    };
 
    using (var stream = new MemoryStream(imgData)) {
        session.PutFile(stream, remoteFilePath, transferOptions);
    }
}