/// <summary>
/// in case of a failure will enqueue the failed request again
/// </summary>
/// <param name="task">the task that handled the request</param>
/// <param name="state">the original request object</param>
private void HandleResponse(Task <HttpResponseMessage> task, object state)
{
Interlocked.Decrement(ref pending);
if (!task.IsCompleted || task.Status != TaskStatus.RanToCompletion)
{
Retry(state as QueueRequest);
OnRequestError?.Invoke(task.Exception, task.Status == TaskStatus.Canceled);
}
else if ((int)task.Result.StatusCode >= 300)
{
Retry(state as QueueRequest);
OnHttpError?.Invoke(task.Result.StatusCode);
}
else
{
OnRequestSent?.Invoke();
}
}
private void throwOnErrorStatus(OnHttpError handler, HttpResponseMessage response, string reply)
{
if (response.IsSuccessStatusCode)
{
return;
}
var request = response.RequestMessage;
var statusCode = (int)response.StatusCode;
var requestHeaders =
from header in request.Headers
let values = header.Value.Select(value => $"'{value}'")
select $"{header.Key}: {string.Join(";", values)}";
var responseHeaders =
from header in response.Headers
let values = header.Value.Select(value => $"'{value}'")
select $"{header.Key}: {string.Join(";", values)}";
var detail = new WebApiExceptionDetail {
statusCode = response.StatusCode,
isSuccessfull = response.IsSuccessStatusCode,
reason = response.ReasonPhrase,
request = new WebApiExceptionDetail.Request {
method = request.Method.Method,
url = request.RequestUri.ToString(),
headers = requestHeaders.ToArray()
},
response = new WebApiExceptionDetail.Response {
headers = responseHeaders.ToArray(),
text = reply
}
};
handler?.Invoke(detail);
throw
new WebApiException($"Bad http status code {statusCode}", detail);
}
/// <summary>
/// 触请求过程中发生错误事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
public void HttpError(object sender, Exception e)
{
OnHttpError?.Invoke(sender, e);
}
