是否可以从托管的HttpModule调用IIS 7+ setUrl API？

Question

我基本需要的是管理大量的URL重写和重定向。重定向很容易做到，但重写应该通过IIS中的ARR代理进行代理。据我所知，IIS重写模块使用IIS中的本地setUrl API来获取ARR代理来转发请求。我不愿意编写本地模块，因此我认为可以编写一个托管模块来执行相同的操作。

@CarlosAg：只是扩大我对你的答案的评论。下面是我需要设置的规则和提供程序，以使重写模块能够按照我的需要进行操作。它只是我自己还是看起来有点像操纵重写模块做一些本不应该做的事情？

<rewrite> 
    <providers> 
    <provider name="CustomRewrite" type="MyRewriteProviders.RewriteProvider, MyRewriteProviders, Version=1.0.0.0, Culture=neutral, PublicKeyToken=e72501f8a0edfe78" /> 
    <provider name="CustomRedirectTemporary" type="MyRewriteProviders.RedirectTemporaryProvider, MyRewriteProviders, Version=1.0.0.0, Culture=neutral, PublicKeyToken=e72501f8a0edfe78" /> 
    <provider name="CustomRedirectPermanent" type="MyRewriteProviders.RedirectPermanentProvider, MyRewriteProviders, Version=1.0.0.0, Culture=neutral, PublicKeyToken=e72501f8a0edfe78" /> 
    </providers> 
    <rules> 
    <clear /> 
    <rule name="Set Http"> 
     <match url="." /> 
     <conditions logicalGrouping="MatchAll" trackAllCaptures="false" /> 
     <serverVariables> 
     <set name="RequestProtocol" value="http" /> 
     </serverVariables> 
     <action type="None" /> 
    </rule> 
    <rule name="Set Https"> 
     <match url="." /> 
     <conditions logicalGrouping="MatchAll" trackAllCaptures="false"> 
     <add input="{HTTPS}" pattern="ON" /> 
     </conditions> 
     <serverVariables> 
     <set name="RequestProtocol" value="https" /> 
     </serverVariables> 
     <action type="None" /> 
    </rule> 
    <rule name="Custom Rewrite"> 
     <match url="(.*)" /> 
     <conditions logicalGrouping="MatchAll" trackAllCaptures="false"> 
     <add input="{CustomRewrite:{RequestProtocol}://{HTTP_HOST}/{URL}}" pattern="(.+)" /> 
     </conditions> 
     <action type="Rewrite" url="{C:1}" logRewrittenUrl="true" /> 
    </rule> 
    <rule name="Custom Redirect (Temporary)" stopProcessing="true"> 
     <match url="(.*)" /> 
     <conditions logicalGrouping="MatchAll" trackAllCaptures="false"> 
     <add input="{CustomRedirectTemporary:{RequestProtocol}://{HTTP_HOST}/{URL}}" pattern="(.+)" /> 
     </conditions> 
     <action type="Redirect" url="{C:1}" redirectType="Found" appendQueryString="false" /> 
    </rule> 
    <rule name="Custom Redirect (Permanent)" stopProcessing="true"> 
     <match url="(.*)" /> 
     <conditions logicalGrouping="MatchAll" trackAllCaptures="false"> 
     <add input="{CustomRedirectPermanent:{RequestProtocol}://{HTTP_HOST}/{URL}}" pattern="(.+)" /> 
     </conditions> 
     <action type="Redirect" url="{C:1}" appendQueryString="false" /> 
    </rule> 
    </rules> 
</rewrite> 

和提供者的代码：

using System; 
using System.Collections.Generic; 
using Microsoft.Web.Iis.Rewrite; 

namespace MyRewriteProviders 
{ 
    public enum ActionType 
    { 
     Rewrite, 
     RedirectPermanent, 
     RedirectTemporary 
    } 

    public abstract class BaseProvider : IRewriteProvider 
    { 
     protected abstract ActionType Action { get; } 

     public void Initialize(IDictionary<string, string> settings, IRewriteContext rewriteContext) {} 

     public string Rewrite(string value) 
     { 
      return RewriteEngine.RewriteUri(value, ActionType.Rewrite); 
     } 
    } 

    public class RewriteProvider : BaseProvider 
    { 
     protected override ActionType Action 
     { 
      get { return ActionType.Rewrite; } 
     } 
    } 

    public class RedirectTemporaryProvider : BaseProvider 
    { 
     protected override ActionType Action 
     { 
      get { return ActionType.RedirectTemporary; } 
     } 
    } 

    public class RedirectPermanentProvider : BaseProvider 
    { 
     protected override ActionType Action 
     { 
      get { return ActionType.RedirectPermanent; } 
     } 
    } 

    public static class RewriteEngine 
    { 
     public static string RewriteUri(string uri, ActionType action) 
     { 
      // Not actual rule engine implementation... just to demonstrate what it would do. 
      var ub = new UriBuilder(uri); 

      // Simulate a match on a rewrite rule 
      if (string.Equals(ub.Host, "rewrite.com", StringComparison.InvariantCultureIgnoreCase) && action == ActionType.Rewrite) 
      { 
       ub.Host = "rewrite-rewritten.com"; 
       return ub.ToString(); 
      } 

      // Simulate a match on a temporary redirect rule 
      if (string.Equals(ub.Host, "redirect.com", StringComparison.InvariantCultureIgnoreCase) && action == ActionType.RedirectTemporary) 
      { 
       ub.Host = "redirect-rewritten.com"; 
       return ub.ToString(); 
      } 

      // No rules matched. This will make the condition in the rewrite rule not match. 
      return string.Empty; 
     } 
    } 
} 

从

除此之外，你需要设置IIS允许自定义服务器变量，您需要注册并在海关总署注册的供应商。这似乎只是比简单地处理请求url更复杂一点，就像你是从本机API那里操作一样。

Answer 1

我已经结束了使用ManagedFusion rewriter。主要原因是这个模块看起来相当可扩展，并且它还包含一个内置代理。无论它是否执行，只有时间和几个测试才能证明。

Answer 2

您是否考虑过使用URL Rewrite扩展性呢？您可以轻松创建一个可以映射任何内容的提供程序，您可以通过参数传递任何信息（只有一个字符串，但可以用任何分隔符连接任意数量的字符串），然后解决您需要的任何内容，无论是部分该URL的字符串或整个URL。

请参见：http://learn.iis.net/page.aspx/804/developing-a-custom-rewrite-provider-for-url-rewrite-module/