swagger.net 使用nginx 代理时出现端口号导致出错

1：当我们通过nginx代理访问时，由于nginx配置了映射到的一个站点为端口为127.0.0.1:6201，导致访问swagger接口时出现增加端口号，如下截图，这样就导致整个swagger无法使用。

2：这个问题网上找了很多没找到方法，主要是自己英语太差了，没注意看到注释内容，可以配置一个固定的url地址用于 代理/负载均衡  。

  var thisAssembly = typeof(SwaggerConfig).Assembly;
            GlobalConfiguration.Configuration
                .EnableSwagger(c =>
                    {

                        c.IncludeXmlComments(GetXmlCommentsPath());
                        c.IncludeXmlComments(System.String.Format(@"{0}\bin\KJ.Model.XML", System.AppDomain.CurrentDomain.BaseDirectory));

                        // By default, the service root url is inferred from the request used to access the docs.
                        // However, there may be situations (e.g. proxy and load-balanced environments) where this does not
                        // resolve correctly. You can workaround this by providing your own code to determine the root URL.
                        //
                        if (IsRelease())
                        {
                            c.RootUrl(req => "https://xxx");
                        }