private async Task <HttpResponse> ExecuteWithRetryAsync(
Uri endpoint,
IDictionary <string, string> headers,
HttpContent body,
HttpMethod method,
ICoreLogger logger,
bool doNotThrow = false,
bool retry = true)
{
Exception timeoutException = null;
bool isRetryable = false;
bool is5xxError = false;
HttpResponse response = null;
try
{
HttpContent clonedBody = body;
if (body != null)
{
// Since HttpContent would be disposed by underlying client.SendAsync(),
// we duplicate it so that we will have a copy in case we would need to retry
clonedBody = await CloneHttpContentAsync(body).ConfigureAwait(false);
}
response = await ExecuteAsync(endpoint, headers, clonedBody, method).ConfigureAwait(false);
if (response.StatusCode == HttpStatusCode.OK)
{
return(response);
}
logger.Info(string.Format(CultureInfo.InvariantCulture,
MsalErrorMessage.HttpRequestUnsuccessful,
(int)response.StatusCode, response.StatusCode));
is5xxError = (int)response.StatusCode >= 500 && (int)response.StatusCode < 600;
isRetryable = is5xxError && !HasRetryAfterHeader(response);
}
catch (TaskCanceledException exception)
{
logger.Error("The HTTP request failed or it was canceled. " + exception.Message);
isRetryable = true;
timeoutException = exception;
}
if (isRetryable && retry)
{
logger.Info("Retrying one more time..");
await Task.Delay(TimeSpan.FromSeconds(1)).ConfigureAwait(false);
return(await ExecuteWithRetryAsync(
endpoint,
headers,
body,
method,
logger,
doNotThrow,
retry : false).ConfigureAwait(false));
}
logger.Warning("Request retry failed.");
if (timeoutException != null)
{
throw new MsalServiceException(
MsalError.RequestTimeout,
"Request to the endpoint timed out.",
timeoutException);
}
if (doNotThrow)
{
return(response);
}
if (is5xxError)
{
throw MsalServiceExceptionFactory.FromHttpResponse(
MsalError.ServiceNotAvailable,
"Service is unavailable to process the request",
response);
}
return(response);
}