public Task <HttpResponse> SendAsync(HttpRequestMethod method, string url, string body, string contentType,
CancellationToken ct)
{
var tcs = new TaskCompletionSource <HttpResponse>();
var request = new XMLHttpRequest();
request.OnReadyStateChange = () =>
{
if (request.ReadyState != AjaxReadyState.Done)
{
return;
}
if ((request.Status >= 200 && request.Status < 300) || request.Status == 304)
{
tcs.TrySetResult(new HttpResponse(true, request.Status, request.ResponseText));
}
else
{
tcs.TrySetResult(new HttpResponse(false, request.Status));
}
};
string methodStr;
switch (method)
{
case HttpRequestMethod.Get:
methodStr = "GET";
break;
case HttpRequestMethod.Post:
methodStr = "POST";
break;
case HttpRequestMethod.Delete:
methodStr = "DELETE";
break;
case HttpRequestMethod.Put:
methodStr = "PUT";
break;
default:
throw new ArgumentException("Unrecognized HTTP method.", nameof(method));
}
request.Open(methodStr, BaseUrl + url);
if (!string.IsNullOrEmpty(contentType))
{
request.SetRequestHeader("Content-Type", contentType);
}
if (string.IsNullOrEmpty(body))
{
request.Send();
}
else
{
request.Send(body);
}
CancellationTokenRegistration reg = ct.Register(() =>
{
if (tcs.TrySetCanceled())
{
request.Abort();
}
});
tcs.Task.ContinueWith(_ => reg.Dispose());
return(tcs.Task);
}