public async Task <Uri> ListenToSingleRequestAndRespondAsync(
int port,
Func <Uri, MessageAndHttpCode> responseProducer,
CancellationToken cancellationToken)
{
TestBeforeTopLevelCall?.Invoke();
cancellationToken.ThrowIfCancellationRequested();
HttpListener httpListener = null;
try
{
string urlToListenTo = "http://localhost:" + port + "/";
httpListener = new HttpListener();
httpListener.Prefixes.Add(urlToListenTo);
TestBeforeStart?.Invoke();
httpListener.Start();
_logger.Info("Listening for authorization code on " + urlToListenTo);
using (cancellationToken.Register(() =>
{
_logger.Warning("HttpListener stopped because cancellation was requested.");
TryStopListening(httpListener);
}))
{
TestBeforeGetContext?.Invoke();
HttpListenerContext context = await httpListener.GetContextAsync()
.ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
Respond(responseProducer, context);
_logger.Verbose("HttpListner received a message on " + urlToListenTo);
// the request URL should now contain the auth code and pkce
return(context.Request.Url);
}
}
// If cancellation is requested before GetContextAsync is called, then either
// an ObjectDisposedException or an HttpListenerException is thrown.
// But this is just cancellation...
catch (Exception ex) when(ex is HttpListenerException || ex is ObjectDisposedException)
{
_logger.Info("HttpListenerException - cancellation requested? " + cancellationToken.IsCancellationRequested);
cancellationToken.ThrowIfCancellationRequested();
// if cancellation was not requested, propagate original ex
throw;
}
finally
{
TryStopListening(httpListener);
}
}
public async Task <Uri> ListenToSingleRequestAndRespondAsync(
int port,
string path,
Func <Uri, MessageAndHttpCode> responseProducer,
CancellationToken cancellationToken)
{
TestBeforeTopLevelCall?.Invoke();
cancellationToken.ThrowIfCancellationRequested();
HttpListener httpListener = null;
string urlToListenTo = string.Empty;
try
{
if (string.IsNullOrEmpty(path))
{
path = "/";
}
else
{
path = (path.StartsWith("/") ? path : "/" + path);
}
urlToListenTo = "http://localhost:" + port + path;
if (!urlToListenTo.EndsWith("/"))
{
urlToListenTo += "/";
}
httpListener = new HttpListener();
httpListener.Prefixes.Add(urlToListenTo);
TestBeforeStart?.Invoke(urlToListenTo);
httpListener.Start();
_logger.Info("Listening for authorization code on " + urlToListenTo);
using (cancellationToken.Register(() =>
{
_logger.Warning("HttpListener stopped because cancellation was requested.");
TryStopListening(httpListener);
}))
{
TestBeforeGetContext?.Invoke();
HttpListenerContext context = await httpListener.GetContextAsync()
.ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
Respond(responseProducer, context);
_logger.Verbose("HttpListner received a message on " + urlToListenTo);
// the request URL should now contain the auth code and pkce
return(context.Request.Url);
}
}
// If cancellation is requested before GetContextAsync is called, then either
// an ObjectDisposedException or an HttpListenerException is thrown.
// But this is just cancellation...
catch (Exception ex) when(ex is HttpListenerException || ex is ObjectDisposedException)
{
_logger.Info("HttpListenerException - cancellation requested? " + cancellationToken.IsCancellationRequested);
cancellationToken.ThrowIfCancellationRequested();
if (ex is HttpListenerException)
{
throw new MsalClientException(MsalError.HttpListenerError,
$"An HttpListenerException occurred while listening on {urlToListenTo} for the system browser to complete the login. " +
"Possible cause and mitigation: the app is unable to listen on the specified URL; " +
"run 'netsh http add iplisten 127.0.0.1' from the Admin command prompt.",
ex);
}
// if cancellation was not requested, propagate original ex
throw;
}
finally
{
TryStopListening(httpListener);
}
}
