URL 重写模块 (IIS) 无法与 IIS 上托管的 OWIN 中间件一起使用

URL Rewrite Module (IIS) not working with OWIN Middleware hosted on IIS

如何将 URL 重写模块与 OWIN 中间件一起使用?

阅读 http://www.asp.net/aspnet/overview/owin-and-katana/owin-middleware-in-the-iis-integrated-pipeline 它说我应该能够使用 NuGet 包在 IIS 管道中使用 OWIN 中间件:

Microsoft.Owin.Host.SystemWeb

这是我尝试使用的代码:

Web.config:

<system.webServer> <rewrite> <rules> <rule name="pandainserter" patternSyntax="ECMAScript" stopProcessing="true"> <match url=".*test.*" /> <conditions trackAllCaptures="true"> <add input="{REQUEST_URI}" pattern="/(.*?)/(.*)" /> </conditions> <action type="Rewrite" url="http://{HTTP_HOST}:20000/v1/{C:2}" appendQueryString="false" /> </rule> </rules> </rewrite> </system.webServer>

Startup.cs (欧文):

[assembly: OwinStartup(typeof(ApiUrlRewriter.Startup))]
namespace ApiUrlRewriter
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            app.Run(context =>
            {
                string t = DateTime.Now.Millisecond.ToString();
                return context.Response.WriteAsync(t + " Production OWIN   App");
            });
        }
    }
}

我想做的是使用 OWIN 中间件,允许 CORS 并修复 OPTIONS 预检 http 调用(此处描述:How to make CORS Authentication in WebAPI 2?),同时仍然能够使用 IIS 重写模块,以将我的调用重写到同一服务器上的其他站点。

我在所有调用中都遇到了这个错误。将 OWIN 与 IIS 重写模块一起使用时:

HTTP Error 404.4 - Not Found The resource you are looking for does not have a handler associated with it.

Detailed Error Information:

Module IIS Web Core

Notification MapRequestHandler

Handler ExtensionlessUrl-Integrated-4.0

Error Code 0x8007007b

似乎重写模块没有注册,我不确定我做错了什么,或者我是否使用了正确的方法?

首先,IIS URL Rewrite module 默认情况下似乎无法在 IIS Express 上运行(我没有尝试在本地开发机器上安装它)。

因此,当 运行 在 Windows Server 2012 上安装 IIS 和 IIS URL 重写模块时,我可以看到我的 HTTP(s) 请求开始被重写。

为了进一步参考,我发布了用于修复 CORS 预检问题的代码,同时还可以将 HTTP(s) 请求重写到其他服务器。请注意,这将允许来自任何来源的 CORS 请求。

Startup.cs class:

using Microsoft.Owin;
using Owin;

[assembly: OwinStartup(typeof(Startup))]

namespace ApiUrlRewriter
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            app.Use<CorsPreflightMiddlerware>();
            app.Use<CorsAuthorizationMiddleware>();
        }
    }
}

CorsPreflightMiddlerware.cs class:

public class CorsPreflightMiddlerware : OwinMiddleware
{
    private const string HTTP_METHOD_OPTIONS = "OPTIONS";

    public CorsPreflightMiddlerware(OwinMiddleware next)
        : base(next)
    {
    }

    public async override Task Invoke(IOwinContext context)
    {
        IOwinRequest req = context.Request;
        IOwinResponse res = context.Response;

        if (req.Method == HTTP_METHOD_OPTIONS)
        {
            res.StatusCode = (int)HttpStatusCode.OK;
            res.Headers.AppendCommaSeparatedValues("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, PATCH, OPTIONS");
            res.Headers.AppendCommaSeparatedValues("Access-Control-Allow-Headers", "Content-Type, Authorization");
        }
        else
        {
            await Next.Invoke(context);
        }
    }
}

CorsAuthorizationMiddleware.cs class:

public class CorsAuthorizationMiddleware : OwinMiddleware
{
    public CorsAuthorizationMiddleware(OwinMiddleware next)
        : base(next)
    {
    }

    public async override Task Invoke(IOwinContext context)
    {
        IOwinRequest req = context.Request;
        IOwinResponse res = context.Response;

        var origin = req.Headers.Get("Origin");
        if (!string.IsNullOrEmpty(origin))
        {
            res.Headers.Set("Access-Control-Allow-Origin", origin);
        }
        if (string.IsNullOrEmpty(res.Headers.Get("Access-Control-Allow-Credentials")))
        {
            res.Headers.Set("Access-Control-Allow-Credentials", "true");
        }

        res.Headers.AppendCommaSeparatedValues("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT, PATCH, OPTIONS");
        res.Headers.AppendCommaSeparatedValues("Access-Control-Allow-Headers", "Content-Type, Authorization");

        await Next.Invoke(context);
    }
}

Web.config:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <system.web>
    <compilation debug="true" targetFramework="4.5" />
    <httpRuntime targetFramework="4.5" />
  </system.web>
  <system.webServer>
    <rewrite>
      <rules>
        <rule name="test" patternSyntax="ECMAScript" stopProcessing="true">
          <match url=".*test.*" />
          <conditions trackAllCaptures="true">
            <add input="{REQUEST_URI}" pattern="/(.*?)/(.*)" />
          </conditions>
          <action type="Rewrite" url="http://{HTTP_HOST}:20000/v1/{C:2}" appendQueryString="false" />
        </rule>
      </rules>
    </rewrite>
  </system.webServer>
</configuration>