Tamir SharpSSH - 无法识别响应流是否为空

Question

所以我使用Tamir Sharp ssh库向远程AIX机器发送一些命令并获取一些响应。但是我无法在我给出错误命令的情况下读取响应，并且响应流为空，并且它们没有规定是否没有响应。

所以这是我用来发送命令并匹配预期响应的方法。

public void RunCommand(string cmd, string expected = "", int maxTimeout = 5000)
    {
        int i = 0;
        bool foundExpected = false;

        Logger.Log(Status.Info, "Entered Command -> " + cmd);
        sshStream.Write(cmd);
        Thread.Sleep(500);
        do
        {

           lastCommand = sshStream.ReadResponse();
           Logger.Log(Status.Info, lastCommand);
            if (lastCommand.Contains(expected))
                {
                    //Logger.Log(Status.Info, "Expected output displayed:  " + expected);
                    foundExpected = true;
                    Thread.Sleep(500);
                    break;
                }

            else
            {
                i += 500;
                Thread.Sleep(500);
            }
        } while (i < maxTimeout);

        if (!foundExpected)
        {
            Logger.Log(Status.Fail, String.Format("Expected output: {0} not displayed", expected));
            throw new Exception(String.Format("Expected output: {0} not displayed", expected));
        }

    }

这些是Readresponse的库方法实现

public string ReadResponse()
    {
        int readCount;
        StringBuilder resp = new StringBuilder();
        byte[] buff = new byte[1024];
        Match match;

        do
        {
            readCount = this.Read(buff);
            resp.Append(System.Text.Encoding.Default.GetString(buff), 0, readCount);
            string s = resp.ToString();
            match = m_prompt.Match(s);
        } while (!match.Success);

        return HandleTerminalChars(resp.ToString());
    }

public virtual int Read(byte[] buffer)
    {
        return Read(buffer, 0, buffer.Length);
    }

public override int Read(byte[] buffer, int offset, int count)
    {
        return m_in.Read(buffer, offset, count);
    }

所以我遇到的问题是，当我发布错误的命令时，它会获取响应，但是在while循环的下一次迭代中，它会停留在 lastCommand = sshStream.ReadResponse（），因为流中没有响应如何确保检查通道中是否有任何消息。