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매개 변수

매개 변수 세부
IDictionary<string,object> environment 이것은 OWIN이 통화 중에 정보를 교환하는 유일한 컬렉션입니다. 모든 키는 https://docs.asp.net/en/latest/fundamentals/owin.html#owin-keys 에서 찾을 수 있습니다.

비고

AppFunc 유형은 C ++의 typedef 와 매우 비슷하게 Func<IDictionary<string, object>, Task> type의 별명이며 메소드 서명을 단축합니다.

요청 경로와 요청을 처리하는 데 걸린 시간 출력

//define a short alias to avoid chubby method signatures
using AppFunc = Func<IDictionary<string, object>, Task>;

class RequestTimeMiddleware
{
    private AppFunc _next;

    public RequestTimeMiddleware(AppFunc next)
    {
        _next = next;
    }

    public async Task Invoke(IDictionary<string, object> environment)
    {
        IOwinContext context = new OwinContext(environment);
        
        var path = context.Request.Path;
        var sw = Stopwatch.StartNew();
        //Queue up the next middleware in the pipeline
        await _next(environment);
        //When the request comes back, log the elapsed time
        Console.WriteLine($"Request for {path} processed in {sw.ElapsedMilliseconds}ms");
    }
}

public static class RequestTimeMiddlewareExtensions
{
    //Extension method as syntactic sugar, to get a meaningful way 
    //in adding the middleware to the pipeline
    public static void UseRequestTimeMiddleware(this IAppBuilder app)
    {
        app.Use<RequestTimeMiddleware>();
    }
}


public class Startup
{
    public void Configuration(IAppBuilder app)
    {
        //add the Middleware as early as possible
        app.UseRequestTimeMiddleware();
        //Queue up every other module
        app.Use(async (environment, next) =>
        {
            await environment.Response.WriteAsync("Hello from the console world");
            await next();
        });
    }
}


Modified text is an extract of the original Stack Overflow Documentation
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