public async Task <IHttpWebResponse> PerformAsync()
{
var rawRequest = await PrepareAsync();
var rawResponse = await GetResponseAsync(rawRequest);
if (_config.Advanced.ContentNegotiation && _contentNegotiator.IsApplicable(rawResponse))
{
_contentTypeProvider = () => _contentNegotiator.GetSupportedContentType(rawResponse);
rawRequest = await PrepareAsync();
rawResponse = await GetResponseAsync(rawRequest);
}
if (rawResponse.StatusCode == HttpStatusCode.NotModified)
{
var cached = _config.Advanced.ModifiedSinceCache.Get(rawRequest);
rawResponse.SetResponseStream(cached.ResponseStream);
}
else
{
await _config.Advanced.ModifiedSinceCache.AddAsync(rawRequest, rawResponse);
}
ResetModifiers();
return(rawResponse);
}