Json IP 速率限制的数据类型响应API

Question

我正在使用 AspNetCoreRateLimit 提供的中间件来对 ASP.NET Core 2.x REST API Web 应用程序的传入请求进行速率限制。

目前这个库 returns html 响应被拒绝的请求。我怎样才能让它变成 return json 响应？

Answer 1

阅读docs

If the request gets blocked then the client receives a text response like this:
Status Code: 429
Retry-After: 58
Content: API calls quota exceeded! maximum admitted 2 per 1m.
You can customize the response by changing these options HttpStatusCode and QuotaExceededMessage, if you want to implement your own response you can override the IpRateLimitMiddleware.ReturnQuotaExceededResponse. The Retry-After header value is expressed in seconds. (emphasis mine)

Answer 2

您可以在 IpRateLimitMiddleware 中自定义您的回复。

IpRateLimitMiddleware

public class MyIpRateLimitMiddleware : IpRateLimitMiddleware
{
    public MyIpRateLimitMiddleware(RequestDelegate next
        , IOptions<IpRateLimitOptions> options
        , IRateLimitCounterStore counterStore
        , IIpPolicyStore policyStore
        , IRateLimitConfiguration config
        , ILogger<IpRateLimitMiddleware> logger) 
            : base(next, options, counterStore, policyStore, config, logger)
    {
    }

    public override Task ReturnQuotaExceededResponse(HttpContext httpContext, RateLimitRule rule, string retryAfter)
    {
        //return base.ReturnQuotaExceededResponse(httpContext, rule, retryAfter);
        var message = new { rule.Limit, rule.Period, retryAfter };

        httpContext.Response.Headers["Retry-After"] = retryAfter;

        httpContext.Response.StatusCode = 200;
        httpContext.Response.ContentType = "application/json";

        return httpContext.Response.WriteAsync(JsonConvert.SerializeObject(message));
    }
}

配置Startup.cs中的中间件

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        //app.UseIpRateLimiting();
        app.UseMiddleware<MyIpRateLimitMiddleware>();
        //your rest middlware
    }

Json IP 速率限制的数据类型响应API

Json data type response of IP rate limit API

asp.net

asp.net-core-2.0