public async Task <PageFetchResult> Fetch(PageFetchRequest request, int delay, CancellationToken ct)
{
var result = new PageFetchResult(request);
HttpResponseMessage responseMessage = null;
try
{
if (delay > 0)
{
try
{
await Task.Delay(delay, ct);
}
catch (TaskCanceledException)//CancellationTokenSource is canceled.
{
ct.ThrowIfCancellationRequested();
}
}
responseMessage = await _httpClient.GetAsync(request.Url, ct);
responseMessage.EnsureSuccessStatusCode();
using (var content = responseMessage.Content)
{
result.Content = await content.ReadAsStringAsync();
}
return(result);
}
catch (TaskCanceledException)
{//http timeout or user canceled.
//if (ct.IsCancellationRequested)
ct.ThrowIfCancellationRequested();
result.Error = new PageFetchResult.ErrorInfo
{
IsTimeout = true
};
return(result);
}
catch (HttpRequestException)
{
result.Error = new PageFetchResult.ErrorInfo();
if (responseMessage == null)
{
result.Error.IsConnectionError = true;
/*
* if (hre.InnerException != null && hre.InnerException is WebException)
* {
* var status = ((WebException) (hre.InnerException)).Status;
* }
* // * */
}
else
{
result.Error.StatusCode = responseMessage.StatusCode;
}
return(result);
}
}
public Task <PageFetchResult> Fetch(PageFetchRequest request, CancellationToken ct)
{
return(Fetch(request, 0, ct));
}
