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Feature\n\n- 运行时动态调整允许跨域的域名列表\n- 基于 `Microsoft.AspNetCore.Cors` 工作，通过代理原始 `ICorsPolicyProvider` 实现功能，作为其补充\n- 支持`泛域名`配置\n- 简化`允许源`的重新加载\n\n-------\n \n### Note\n与原始的 `Microsoft.AspNetCore.Cors` 相比，当前存在如下差异\n\n- 不验证端口号\n- 不验证协议\n\n-------\n\n## 2. 快速开始\n安装包\n```C#\n\u003cPackageReference Include=\"Cuture.AspNetCore.DynamicCors\" Version=\"1.0.0-*\" /\u003e\n```\n添加服务\n```C#\nservices.AddDynamicCors(builder =\u003e\n        {\n            builder.AddDefaultPolicy(policyBuilder =\u003e\n            {\n                //注意不允许配置 Origin\n                policyBuilder.AllowAnyMethod()\n                             .AllowCredentials()\n                             .AllowAnyHeader();\n            })\n            //.SyncAllowedOriginsFromConfiguration(\"Cors:AllowedOrigins\") //从 IConfiguration 同步允许跨域的域名列表\n            .SyncAllowedOriginsWithOptions\u003cSampleCorsOptions\u003e(m =\u003e m.AllowedOrigins)  //从 IOptions\u003cSampleCorsOptions\u003e 同步允许跨域的域名列表\n            .AddAllowedOriginsSyncSource\u003cSampleAllowedOriginsSyncSource\u003e() //添加从指定的同步源同步允许跨域的域名列表\n            ;\n        });\n```\n启用Cors\n```C#\napp.UseCors();\n```\n\n## 3. 自定义\n\n### 3.1 自定义`允许源`的动态变更\n\n使用 `IDomainNameCollectionContainer.Get` 方法获取指定策略的域名集合进行操作\n\n```C#\nvar collection = collectionContainer.Get(\"policyName\"); //获取指定策略名的域名集合\ncollection.Add(\"http://sample.com\");  //添加指定域名\ncollection.Remove(\"http://sample.com\"); //从集合中移除指定域名\ncollection.Reset([\"http://sample.com\", \"http://sample2.com\"]); //重置为指定集合\ncollection.Contains(\"http://sample.com\"); //检查是否包含指定域名\ncollection.Clear(); //清空集合\n```\n\n### 3.2 实现`允许来源同步源` - IAllowedOriginsSyncSource\n`允许来源同步源` 为动态更新Cors域名集合提供支持。已实现抽象基类 `AllowedOriginsSyncSource` ，从其派生可以简化实现逻辑\n```C#\nclass SampleAllowedOriginsSyncSource\n    : AllowedOriginsSyncSource\n{\n    // PolicyName policyName 会自动注入策略名称\n    public SampleAllowedOriginsSyncSource(PolicyName policyName, ILogger\u003cSampleAllowedOriginsSyncSource\u003e logger) : base(policyName)\n    {\n        //通知当前源已变更，程序会自动调用 GetOrigins 再次获取\n        //NotifySourceChanged();\n    }\n\n    protected override Task\u003cIEnumerable\u003cstring\u003e\u003e InnerGetOriginsAsync(CancellationToken cancellationToken)\n    {\n        //获取允许来源列表\n        throw new NotImplementedException();\n    }\n}\n\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstratosblue%2Fcuture.aspnetcore.dynamiccors","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstratosblue%2Fcuture.aspnetcore.dynamiccors","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstratosblue%2Fcuture.aspnetcore.dynamiccors/lists"}