/// <summary>Sends a request to Stripe's API as an asynchronous operation.</summary>
/// <typeparam name="T">Type of the Stripe entity returned by the API.</typeparam>
/// <param name="method">The HTTP method.</param>
/// <param name="path">The path of the request.</param>
/// <param name="options">The parameters of the request.</param>
/// <param name="requestOptions">The special modifiers of the request.</param>
/// <param name="cancellationToken">The cancellation token to cancel operation.</param>
/// <returns>The task object representing the asynchronous operation.</returns>
/// <exception cref="StripeException">Thrown if the request fails.</exception>
public async Task <T> RequestAsync <T>(
HttpMethod method,
string path,
BaseOptions options,
RequestOptions requestOptions,
CancellationToken cancellationToken = default(CancellationToken))
where T : IStripeEntity
{
var request = new StripeRequest(this, method, path, options, requestOptions);
var response = await this.HttpClient.MakeRequestAsync(request, cancellationToken)
.ConfigureAwait(false);
return(ProcessResponse <T>(response));
}
private System.Net.Http.HttpRequestMessage BuildRequestMessage(StripeRequest request)
{
var requestMessage = new System.Net.Http.HttpRequestMessage(request.Method, request.Uri);
// Standard headers
requestMessage.Headers.TryAddWithoutValidation("User-Agent", this.userAgentString);
requestMessage.Headers.Authorization = request.AuthorizationHeader;
// Custom headers
requestMessage.Headers.Add("X-Stripe-Client-User-Agent", this.stripeClientUserAgentString);
foreach (var header in request.StripeHeaders)
{
requestMessage.Headers.Add(header.Key, header.Value);
}
// Request body
requestMessage.Content = request.Content;
return(requestMessage);
}
/// <inheritdoc/>
public async Task <Stream> RequestStreamingAsync(
HttpMethod method,
string path,
BaseOptions options,
RequestOptions requestOptions,
CancellationToken cancellationToken = default)
{
var request = new StripeRequest(this, method, path, options, requestOptions);
var response = await this.HttpClient.MakeStreamingRequestAsync(request, cancellationToken)
.ConfigureAwait(false);
if (response.StatusCode == HttpStatusCode.OK)
{
return(response.Body);
}
var readResponse = await response.ToStripeResponseAsync().ConfigureAwait(false);
throw BuildStripeException(readResponse);
}
/// <summary>Sends a request to Stripe's API as an asynchronous operation.</summary>
/// <param name="request">The parameters of the request to send.</param>
/// <param name="cancellationToken">The cancellation token to cancel operation.</param>
/// <returns>The task object representing the asynchronous operation.</returns>
public async Task <StripeResponse> MakeRequestAsync(
StripeRequest request,
CancellationToken cancellationToken = default(CancellationToken))
{
TimeSpan duration;
Exception requestException = null;
HttpResponseMessage response = null;
int retry = 0;
this.requestTelemetry.MaybeAddTelemetryHeader(request.StripeHeaders);
while (true)
{
requestException = null;
var httpRequest = this.BuildRequestMessage(request);
var stopwatch = Stopwatch.StartNew();
try
{
response = await this.httpClient.SendAsync(httpRequest, cancellationToken)
.ConfigureAwait(false);
}
catch (HttpRequestException exception)
{
requestException = exception;
}
catch (OperationCanceledException exception)
when(!cancellationToken.IsCancellationRequested)
{
requestException = exception;
}
stopwatch.Stop();
duration = stopwatch.Elapsed;
if (!this.ShouldRetry(
retry,
requestException != null,
request.Method,
response?.StatusCode))
{
break;
}
retry += 1;
await Task.Delay(this.SleepTime(retry)).ConfigureAwait(false);
}
if (requestException != null)
{
throw requestException;
}
this.requestTelemetry.MaybeEnqueueMetrics(response, duration);
var reader = new StreamReader(
await response.Content.ReadAsStreamAsync().ConfigureAwait(false));
return(new StripeResponse(
response.StatusCode,
response.Headers,
await reader.ReadToEndAsync().ConfigureAwait(false))
{
NumRetries = retry,
});
}
