Send CTRL+S over ShellStream

[maurodx]

I need to send special combination of CTRL+S in a ssh ShellStream in order to switch to CLI mode in a Siemens Ruggedcom switch.
Searching over web I found that CTRL+S can be translated to \u0019 but i'm not sure.
Using line
stream.Write("\u0019");
doesn't change shell context and
stream.Read();
returns empty string.

[Rob-Hague]

From reading https://datatracker.ietf.org/doc/html/rfc4254#section-8, you could try passing the terminalModeValues argument to CreateShellStream as

terminalModeValues: new Dictionary<TerminalModes, int> { [TerminalModes.VSTOP] = 0u } // don't know what the value should be

and see if that gets you anywhere