public async Task WriteResultToResponse(IDictionary<string, object> environment, object @object, ContentNegotiatorResult result)
{
var stream = new MemoryStream();
await result.Formatter.WriteToStreamAsync(@object.GetType(), @object, stream, null, null);
var responseHeaders = environment["owin.ResponseHeaders"] as IDictionary<string, string[]>;
responseHeaders.Add("content-type", new[] { result.MediaType });
stream.Position = 0;
var response = environment["owin.ResponseBody"] as Stream;
await stream.CopyToAsync(response);
}
private ContentNegotiatorResult GetContentTypeFormatter(Type type, IDictionary<string, string[]> headers, IEnumerable<MediaTypeFormatter> formatters)
{
ContentNegotiatorResult result = null;
var contentTypeHeader = headers.Where(h => string.Equals(h.Key, "content-type", StringComparison.OrdinalIgnoreCase));
var jsonFormatter = formatters.FirstOrDefault(f => f is JsonMediaTypeFormatter);
var xmlFormatter = formatters.FirstOrDefault(f => f is XmlMediaTypeFormatter);
if (contentTypeHeader.Any() && contentTypeHeader.First().Value.Any(v => v.Equals(JsonMimeType, StringComparison.OrdinalIgnoreCase)) && jsonFormatter != null)//Has json content-type
result = new ContentNegotiatorResult(jsonFormatter, JsonMimeType);
else if (contentTypeHeader.Any() && contentTypeHeader.First().Value.Any(v => XmlMimeTypes.FirstOrDefault(xml => v.Equals(xml, StringComparison.OrdinalIgnoreCase)) != null))//Has xml content-type
result = new ContentNegotiatorResult(xmlFormatter, XmlMimeTypes.First());
return result;
}
