CheckValid()

override bool System.Net.FtpControlStream.CheckValid ( ResponseDescription response, ref int validThrough, ref int completeLength )

inlineprotectedvirtual

Reimplemented from System.Net.CommandStream.

Definition at line 871 of file FtpControlStream.cs.

    {
        if (System.Net.NetEventSource.Log.IsEnabled())
        {
            System.Net.NetEventSource.Info(this, $"CheckValid({response.StatusBuffer})", "CheckValid");
        }
        if (response.StatusBuffer.Length < 4)
        {
            return true;
        }
        string text = response.StatusBuffer.ToString();
        if (response.Status == -1)
        {
            if (!char.IsDigit(text[0]) || !char.IsDigit(text[1]) || !char.IsDigit(text[2]) || (text[3] != ' ' && text[3] != '-'))
            {
                return false;
            }
            response.StatusCodeString = text.Substring(0, 3);
            response.Status = Convert.ToInt16(response.StatusCodeString, NumberFormatInfo.InvariantInfo);
            if (text[3] == '-')
            {
                response.Multiline = true;
            }
        }
        int num = 0;
        while ((num = text.IndexOf("\r\n", validThrough, StringComparison.Ordinal)) != -1)
        {
            int num2 = validThrough;
            validThrough = num + 2;
            if (!response.Multiline)
            {
                completeLength = validThrough;
                return true;
            }
            if (text.Length > num2 + 4 && text.Substring(num2, 3) == response.StatusCodeString && text[num2 + 3] == ' ')
            {
                completeLength = validThrough;
                return true;
            }
        }
        return true;
    }

References System.Net.NetEventSource.Info(), System.Globalization.NumberFormatInfo.InvariantInfo, System.Net.NetEventSource.Log, System.text, and System.Convert.ToInt16().