MS WINDOWS UWP APP | Port forwarding with SSH.NET does not work!

[sm-a]

Hello, everybody,

when i try to create a port forwarding with the following code it does not work (no error, nothing). So I would be happy if someone had an idea what goes wrong in my code.

Here now my code:

        using (var client = new SshClient(conInfo))
        {

            client.KeepAliveInterval = new TimeSpan(0, 0, 30);
            client.ConnectionInfo.Timeout = new TimeSpan(0, 0, 20);
            client.Connect();
            ForwardedPortRemote port = new ForwardedPortRemote(8888, "127.0.0.1", 443);
            client.AddForwardedPort(port);

            port.Start();

            var dialog = new MessageDialog("Wenn Sie fertig sind mit der Konfiguration schließen Sie bitte diesen Message Dialog!");
            await dialog.ShowAsync();

            port.Stop();
            client.Disconnect();
        }

I'm glad for any help.

Greetings Sven

[SSpormann]

can you set local loop back at the properties debug?

[sm-a]

@SSpormann thank you for your help. How can I set local loop back?

[SSpormann]

[sm-a]

@SSpormann thank you for your help. "Allow local network loopback" is already activated. What can I do to get the App to work?

[SSpormann]

Are you useing the nuget package ? try downloading the newest version from github, that way i managed to get it to work

[sm-a]

@SSpormann Yes I use the nuget package. How can I get the newest version. When I look on github releases (https://github.com/sshnet/SSH.NET/releases/tag/2016.1.0) I found only an old version from 2016. How can I get a newer version or is it the newest?

[SSpormann]

https://github.com/sshnet/SSH.NET

displays last update 4 days ago, but nuget wasn't updated for ages, just import the projects to your foulder,

WindowsDevicePortalWrapper.UniversalWindows

and

WindowsDevicePortalWrapper

[sm-a]

@SSpormann When I download from github as zip I don't find dll or another file that I can use as reference in Visual Studio 2019. What I must do? Sorry for my question. I am new in the Windows Plattform in development. I hope you can me help out.

[darkoperator]

You will have to compile it and use the resulting assembly since it is currently in dev for the next release.

Sent from my iPhone

On Mar 4, 2020, at 10:09 AM, sm-a notifications@github.com wrote:

 @SSpormann When I download from github as zip I don't find dll or another file that I can use as reference in Visual Studio 2019. What I must do? Sorry for my question. I am new in the Windows Plattform in development. I hope you can me help out.

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[AraHaan]

Which brings me to my next question; why does openssh on windows allow sendenv on port forwarding but ssh.net does not? I would also like the exact contents somehow of the result from the server as well for debugging purposes as well. Please help.

[darkoperator]

Because one is a port of OpenSSH and the other is an implementation of the SSH protocol as in RFC 4253

[AraHaan]

Then is there a way to implement my own SendEnv then for the initial port forwarding thing in ssh.net then? I do need it because I do explicitly set the environment variable in my code and I do want it sent for the server to use that variable to construct a fixed port forwarded url (that value woulc be what it is fixed to on the first part of the returned url).

[darkoperator]

No clue there on the how, but in the can yes since both projects are open source, it would be just finding what it sends and implement it in C#. Im just a user like you, have not gone down the protocol path on the changes I have done for my own use

Reply to this email directly, view it on GitHub, or unsubscribe.

[sm-a]

@SSpormann When I load Renci.SshNet.VS2019.sln under the folder "src" and run a clean build and then a rebuild I get the message that the rebuild was not successful (only one is successful). What am I doing wrong?

After the rebuild I get a virus warning from Microsoft Defender. Please check if it contains a virus. See attached Screenshot.

Thank you for your help.

[darkoperator]

More than likely a False Positive, my guess is that encryption functions used are the same as those used by the ransomeware and it is flagging on those falsely flagging the binary. No clue how to ping MS on this to have them take a look.

[darinkes]

Same here #490 Contacted Microsoft because of this but never got any response :/

[sm-a]

The problem still exists. I have now a .net core WPF app and it is the same failure. If I use the following code and then call the forwarded port 8443 it loads endlessly in the browser and nothing happens.

Has nobody any idea to fix this? I use the following version: 2020.0.0-beta1

Here my actual code:

ConnectionInfo conInfo;
var pk = new PrivateKeyFile(smaRSAKey);
var keyFiles = new[] { pk };

var methods = new List<AuthenticationMethod>();
methods.Add(new PrivateKeyAuthenticationMethod(smaUserName, keyFiles));

conInfo = new ConnectionInfo(smaHost, 22, smaUserName, methods.ToArray());

using (var client = new SshClient(conInfo))
{

    client.KeepAliveInterval = new TimeSpan(0, 0, 30);
    client.ConnectionInfo.Timeout = new TimeSpan(0, 0, 20);
    client.Connect();

    var port = new ForwardedPortLocal("localhost", 8443, smaHost, 443);
    client.AddForwardedPort(port);

    port.Start();

    MessageBox.Show("If finish then click OK!");

    port.Stop();
    client.Disconnect();

}