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#### 1. Startup.cs 中配置
- ConfigureServices 方法内新增：

```csharp
services.AddDataProtection()
	.PersistKeysToFileSystem(new System.IO.DirectoryInfo("{SAVE KEY PATH}"))//保存Key的目录
	.SetApplicationName("{APP NAME}");  //把所有子系统都设置为统一的应用名称

services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme)
	.AddCookie(CookieAuthenticationDefaults.AuthenticationScheme, options =>
	{
		options.Cookie.Name = ConfigurationHelper.Get<string>("{COOKIE NAME}");//设置统一的Cookie名称
		options.Cookie.Domain = ConfigurationHelper.Get<string>(".baidu.com");//设置Cookie的域为根域，这样所有子域都可以发现这个Cookie
		options.Cookie.Path = "/";
	});
```

- Configure 方法内新增：

```csharp
app.UseAuthentication();
app.UseAuthorization();
app.UseCookiePolicy(new CookiePolicyOptions
{
	MinimumSameSitePolicy = SameSiteMode.Strict,
});
```

#### 2. 这里配置完以后，在Login页面登陆完毕需要配置的代码：

```csharp
//添加登陆状态
var claims = new List<Claim>();
claims.Add(new Claim(ClaimTypes.Name, "{User}"));
var claimsIdentity = new ClaimsIdentity(claims, CookieAuthenticationDefaults.AuthenticationScheme);
await HttpContext.SignInAsync(CookieAuthenticationDefaults.AuthenticationScheme, new ClaimsPrincipal(claimsIdentity), new AuthenticationProperties
 {
     IsPersistent = remember,
     ExpiresUtc = DateTime.UtcNow.AddMinutes(5)
 });
 
//注销
await HttpContext.SignOutAsync(CookieAuthenticationDefaults.AuthenticationScheme);
```

#### 3. 在其他站点想要获取已经登陆的用户在View或者Controller：
```csharp
if (User.Identity.IsAuthenticated){
	var user=User.Identity.Name;
}
```

> “User.Identity.IsAuthenticated”
这个对象在：HttpContext、ControllerBase、Veiw等等都可以获取得到。


------------
####最后
> 以上三步除了**第 1 步要在主站点和其他需要共享登陆状态的站点都要配置**，后面的登陆和注销在主站点完成就行了。不过也看项目的实际需求。

官方文档传送门：[点击查看](https://docs.microsoft.com/zh-cn/aspnet/core/security/authentication/cookie?view=aspnetcore-3.1#sign-out "点击查看")

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.Net Core 与 APNs通信给用户设备发送 UserNotifications

由飞扬记录于：2020/6/12 3:03:27

分类：swift

### made 以后请面向 google 编程...
------------


1. 在[开发者后台](https://developer.apple.com/account/resources "开发者后台")申请一个 Tpye 为 Apple Push Services 的 Certificates，申请过程中按照提示做就可以了。
2. **要注意的地方：最后一步他会让上传一个 Certificate Signing Request 文件** 这个文件在这里创建： [官方说明](https://help.apple.com/developer-account/#/devbfa00fef7 "官方说明")
3. 创建完毕后下载此证书导入到mac里，然后在mac的钥匙串里右键此证书导出一个 .p12 后缀并带有密码的文件，此文件在和APNs交互的时候必须用到。

------------

这里是通过APNs给用户发通知的代码:
```csharp
using System;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Net.Security;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using System.Collections.Generic;

namespace Test.APNs
{
    class NotificationModel
    {
        public NotificationBodyModel aps { get; set; }
    }

    class NotificationBodyModel
    {
        public UserInfo alert { get; set; }
        public string sound { get; set; }
        public int badge { get; set; }
    }

    class UserInfo
    {
        public string title { get; set; }
        public string subtitle { get; set; }
        public string body { get; set; }
    }

    class Program
    {
        static void Main(string[] args)
        {

            var model = new NotificationModel();
            model.aps = new NotificationBodyModel() {
                sound= "default",
                badge = 0
            };
            model.aps.alert = new UserInfo()
            {
                title = "这是一个推送",
                //subtitle = "标题2",
                body = "内容",
            };
            var datastr = JsonConvert.SerializeObject(model);

            var handler = new HttpClientHandler();
            X509Certificate2 certificate = new X509Certificate2("/Users/fysmart/Desktop/ApplePushServices_Fysmart_tools.p12", "password");
            handler.ClientCertificates.Add(certificate);

            var client = new HttpClient(handler);
            var request = new HttpRequestMessage(HttpMethod.Post, "https://api.development.push.apple.com/3/device/33c5912dbf02593a82jg62gsb53616608f3b3fb423d8c25f3467989c878c74");
            request.Version = new Version(2, 0);
            request.Content = new StringContent(datastr);
            request.Headers.Add("apns-push-type", "alert");
            request.Headers.Add("apns-expiration", "0");
            request.Headers.Add("apns-priority", "10");
            request.Headers.Add("apns-topic", "com.fysmart.*****-*****");

            var response = client.SendAsync(request).GetAwaiter().GetResult();
            if (response.StatusCode == HttpStatusCode.OK)
            {
                IEnumerable<string> values;
                response.Headers.TryGetValues("apns-id", out values);
                var a = values.GetEnumerator();
                var id = a.MoveNext() ? a.Current : "";
                Console.WriteLine("push 成功,apns-id:" + id);
            }
            else
            {
                Console.WriteLine("Response: " + response.Content.ReadAsStringAsync().GetAwaiter().GetResult());
            }

            Console.ReadLine();
        }
    }
}
```

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