HttpClientFactoryOptions

var services = new ServiceCollection()
.AddTransient<Foo>()
.AddScoped<Bar>()
.Configure<HttpClientFactoryOptions>(options =>
{
options.HandlerLifetime = TimeSpan.FromSeconds(2);//生命周期设置为2s 后过期，默认2min
options.HttpMessageHandlerBuilderActions.Add(AddHandler);//添加要执行的方法

options.ShouldRedactHeaderValue = EditHeader;//请求头判断，用于屏蔽

});