带有http2的Nginx背后的asp.net核心-远程IP始终为127.0.0.1

我在Ubuntu 16.04的Nginx后面托管了一个asp.net网络核心2.0应用程序.

我的设置如下所示：

server {
        listen 443 ssl http2; 
        listen [::]:443 ssl http2;
        ssl on;
...
    location / {
                    proxy_pass http://localhost:5000;
                    proxy_http_version 1.1;
                    proxy_set_header Upgrade $http_upgrade;
                    proxy_set_header Connection keep-alive;
                    proxy_set_header Host $host;
                    proxy_cache_bypass $http_upgrade;
                    proxy_set_header X-Forwarded-Proto-Version $http2;
                    client_max_body_size 32m;
                    keepalive_timeout 200;
                    send_timeout 20;
                    client_body_timeout 50;
            }
}

而且我在Startup.cs中也有这些设置

app.UseForwardedHeaders(new ForwardedHeadersOptions
            {
                ForwardedHeaders = ForwardedHeaders.XForwardedFor |
                                   ForwardedHeaders.XForwardedProto
            });

但是仍然每次当我尝试获取HttpContext.Connection.RemoteIpAddress时,它都会返回127.0.0.1

我应该怎么做才能解决此问题并获得真实的IP地址？