ASP.NET Core 实现基本认证的示例代码(2)

// HTTP基本认证Middleware public static class BasicAuthentication { public static void UseBasicAuthentication(this IApplicationBuilder app) { app.UseMiddleware<BasicAuthenticationMiddleware>(); } } public class BasicAuthenticationMiddleware { private readonly RequestDelegate _next; private readonly ILogger _logger; public BasicAuthenticationMiddleware(RequestDelegate next, ILoggerFactory LoggerFactory) { _next = next; _logger = LoggerFactory.CreateLogger<BasicAuthenticationMiddleware>(); } public async Task Invoke(HttpContext httpContext, IAuthenticationService authenticationService) { var authenticated = await authenticationService.AuthenticateAsync(httpContext, BasicAuthenticationScheme.DefaultScheme); _logger.LogInformation("Access Status：" + authenticated.Succeeded); if (!authenticated.Succeeded) { await authenticationService.ChallengeAsync(httpContext, BasicAuthenticationScheme.DefaultScheme, new AuthenticationProperties { }); return; } await _next(httpContext); } }

// HTTP基本认证Middleware public static class BasicAuthentication { public static void UseBasicAuthentication(this IApplicationBuilder app) { app.UseMiddleware<BasicAuthenticationMiddleware>(); } } public class BasicAuthenticationMiddleware { private readonly RequestDelegate _next; private readonly ILogger _logger; public BasicAuthenticationMiddleware(RequestDelegate next, ILoggerFactory LoggerFactory) { _next = next; _logger = LoggerFactory.CreateLogger<BasicAuthenticationMiddleware>(); } public async Task Invoke(HttpContext httpContext, IAuthenticationService authenticationService) { var authenticated = await authenticationService.AuthenticateAsync(httpContext, BasicAuthenticationScheme.DefaultScheme); _logger.LogInformation("Access Status：" + authenticated.Succeeded); if (!authenticated.Succeeded) { await authenticationService.ChallengeAsync(httpContext, BasicAuthenticationScheme.DefaultScheme, new AuthenticationProperties { }); return; } await _next(httpContext); } }

Startup.cs 文件添加并启用HTTP基本认证

services.AddAuthentication(BasicAuthenticationScheme.DefaultScheme) .AddScheme<BasicAuthenticationOption, BasicAuthenticationHandler>(BasicAuthenticationScheme.DefaultScheme,null); app.UseWhen( predicate:x => x.Request.Path.StartsWithSegments(new PathString(_protectedResourceOption.Path)), configuration:appBuilder => { appBuilder.UseBasicAuthentication()； } );

以上BA认证的服务端已经完成，现在可以在浏览器测试：

进一步思考？

浏览器在BA协议中行为： 编程实现BA客户端，要的同学可以直接拿去

/// <summary> /// BA认证请求Handler /// </summary> public class BasicAuthenticationClientHandler : HttpClientHandler { public static string BAHeaderNames = "authorization"; private RemoteBasicAuth _remoteAccount; public BasicAuthenticationClientHandler(RemoteBasicAuth remoteAccount) { _remoteAccount = remoteAccount; AllowAutoRedirect = false; UseCookies = true; } protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken) { var authorization = $"{_remoteAccount.UserName}:{_remoteAccount.Password}"; var authorizationBased64 = "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(authorization)); request.Headers.Remove(BAHeaderNames); request.Headers.Add(BAHeaderNames, authorizationBased64); return base.SendAsync(request, cancellationToken); } } // 生成basic Authentication请求 services.AddHttpClient("eqid-ba-request", x => x.BaseAddress = new Uri(_proxyOption.Scheme +"://"+ _proxyOption.Host+":"+_proxyOption.Port ) ) .ConfigurePrimaryHttpMessageHandler(y => new BasicAuthenticationClientHandler(_remoteAccount){} ) .SetHandlerLifetime(TimeSpan.FromMinutes(2)); 仿BA认证协议中的浏览器行为

That's All . BA认证是随处可见的基础认证协议，本文期待以最清晰的方式帮助你理解协议:

实现了基本认证协议服务端，客户端；

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