no responses when read a line

[FatDang]

when I change ssh.net's version from 2023.0.1 to 2024.1.0 and run the code. It will be no responses when I use stream.read to read a line continuously . It seems that if the reader meet the empty content the code will be no responses. It's normal when I use sshnet version 2023.0.1. How can I do to fix this problem.Thanks!

[Rob-Hague]

Can you please show some example code?

[FatDang]

StreamReader reader = null;
reader = new StreamReader(sshCommand.OutputStream);

    public string ReadByEndOf()
    {
        string tmp = null;
        string str;
        for (int i = 0; i < 3; i++)
        {
            do
            {
                str = reader.ReadLine();
                if (!string.IsNullOrWhiteSpace(str))
                {
                    tmp += str.Trim() + "\r\n";
                    //Console.WriteLine(str.Trim());
                }
            } while (!reader.EndOfStream);
            Thread.Sleep(500);
        }


        return tmp;
    }

As showed above， I initial a reader and use the function "ReadByEndOf()" . When it goes to the step "str = reader.ReadLine();" it will get no responses after several while loops. I tried to trace the invocation and found the problem occur in "ReadBuffer()"

[katomark]

I have same issue. I was update from version 2020 to 2025 and it has same issue. StreamShell.DataAvailable always true and never false, so it stuck at reader.read(). Then I tried to use 2023 version and my code working again. Is 2025 version has different behaviour? I'm in windows 11

[Rob-Hague]

Yes, ShellStream was rewritten in 2024.0.0. It fixed incorrect behaviour where Read would return 0 (EOF) before the channel was closed. See also #1657 and #1485

[katomark]

Thank you for your update @Rob-Hague. So now, I should use timeout when read data, CMIW.

[katomark]

just update to 2025, and use shellstream.read() instead. Now it's working well