public void GetValid(string url, Action <UrlValidationResponse, Exception> callback)
{
try
{
var startInfo = new ProcessStartInfo(YoutubeDlFilename)
{
Arguments = $"--ignore-errors --get-url {url}",
CreateNoWindow = true,
UseShellExecute = false,
RedirectStandardOutput = true
};
UrlValidationResult validationResult = null;
using (var ydlProcess = Process.Start(startInfo))
{
if (ydlProcess == null)
{
callback(null, new Exception("Cannot start validation process."));
return;
}
var output = ydlProcess.StandardOutput;
while (!output.EndOfStream)
{
// Read first line
var outputLine = output.ReadLine();
validationResult = new UrlValidationResult
{
IsValid = outputLine.IsValidUrl(),
Url = url
};
// First line should tell everything, so let's close the process.
ydlProcess.Close();
}
}
if (validationResult == null)
{
validationResult = new UrlValidationResult
{
IsValid = false,
Url = url
}
}
;
var response = new UrlValidationResponse
{
ValidationResults = new[] { validationResult }
};
callback(response, null);
}
catch (Exception ex)
{
callback(null, ex);
}
}
/// <summary>
/// Checks if an OPC DA server URL is correct.
/// </summary>
/// <param name="opcServerUrl">The OPC server URL.</param>
/// <exception cref="System.ArgumentNullException">opcServerUrl</exception>
/// <exception cref="UriFormatException">Wrong OPC server URL. Format: opcda://host/progIdOrCLSID.</exception>
public static void CheckOpcUrl(Uri opcServerUrl)
{
UrlValidationResult result = Validate(opcServerUrl);
if (0 != (result & UrlValidationResult.UrlIsNull))
{
throw new ArgumentNullException("opcServerUrl");
}
if (0 != (result & UrlValidationResult.MoreThanTwoSegments))
{
throw new UriFormatException("Wrong OPC server URL. Format: opcda://host/progIdOrCLSID.");
}
if (0 != (result & UrlValidationResult.WrongScheme))
{
throw new UriFormatException("Wrong OPC server URL. Format: opcda://host/progIdOrCLSID.");
}
}
