private async Task CopyApiProxyResponseToHttpResponse(HttpContext context, ApiProxyContext apiProxyContext, IApiProxyUriResolver apiProxyUriResolver, bool debugMode)
{
var response = context.Response;
var apiProxyResponse = apiProxyContext.Response.ApiProxyResponse;
response.StatusCode = apiProxyResponse.StatusCode;
foreach (var header in apiProxyResponse.Headers)
{
response.Headers[header.Key] = header.Value;
}
if (debugMode)
{
AddDebugInfoToResponse(context, response, apiProxyContext, apiProxyUriResolver);
}
// SendAsync removes chunking from the response. This removes the header so it doesn't expect a chunked response.
response.Headers.Remove("transfer-encoding");
using (var stream = new MemoryStream(apiProxyResponse.Body))
{
stream.Position = 0;
await stream.CopyToAsync(context.Response.Body, 81920, context.RequestAborted);
}
}
public ApiProxyContext Get(HttpContext context)
{
var key = typeof(ApiProxyContext).FullName;
var apiProxyRequestContext = context.Items[key] as ApiProxyContext;
if (apiProxyRequestContext == null)
{
apiProxyRequestContext = new ApiProxyContext();
context.Items.Add(key, apiProxyRequestContext);
}
return(apiProxyRequestContext);
}
private void AddDebugInfoToResponse(HttpContext context, HttpResponse response, ApiProxyContext apiProxyContext, IApiProxyUriResolver apiProxyUriResolver)
{
response.Headers["api-proxy-outbound-url"] = apiProxyUriResolver.ResolveOutboundUri(context, _apiProxy).ToString();
response.Headers["api-proxy-fetched-from-cache"] = apiProxyContext.Response.FetchedFromCache.ToString().ToLower();
response.Headers["api-proxy-middleware-execution-time"] = apiProxyContext.ExecutionEnd
.Subtract(apiProxyContext.ExecutionStart).TotalMilliseconds.ToString(CultureInfo.InvariantCulture);
}
