public static async Task <IActionResult> ProxyAsync(this HttpClient http, string q, HttpRequest request, HttpResponse response)
{
var requestMessage = new HttpRequestMessage();
var requestMethod = request.Method;
if (!HttpMethods.IsGet(requestMethod) &&
!HttpMethods.IsHead(requestMethod) &&
!HttpMethods.IsDelete(requestMethod) &&
!HttpMethods.IsTrace(requestMethod))
{
var streamContent = new StreamContent(request.Body);
requestMessage.Content = streamContent;
}
// Copy the request headers
foreach (var header in request.Headers)
{
if (!requestMessage.Headers.TryAddWithoutValidation(header.Key, header.Value.ToArray()) && requestMessage.Content != null)
{
requestMessage.Content?.Headers.TryAddWithoutValidation(header.Key, header.Value.ToArray());
}
}
var uri = new Uri(q);
requestMessage.Headers.Host = uri.Authority;
requestMessage.RequestUri = uri;
requestMessage.Method = new HttpMethod(request.Method);
var responseMessage = await http.SendAsync(requestMessage, HttpCompletionOption.ResponseHeadersRead, request.HttpContext.RequestAborted);
response.StatusCode = (int)responseMessage.StatusCode;
foreach (var header in responseMessage.Headers)
{
response.Headers[header.Key] = header.Value.ToArray();
}
foreach (var header in responseMessage.Content.Headers)
{
response.Headers[header.Key] = header.Value.ToArray();
}
// SendAsync removes chunking from the response. This removes the header so it doesn't expect a chunked response.
response.Headers.Remove(HeaderNames.TransferEncoding);
var responseStream = await responseMessage.Content.ReadAsStreamAsync();
return(new FileStreamResult(responseStream, responseMessage.Content.Headers.ContentType.MediaType)
{
EnableRangeProcessing = true
});
}
