我正在尝试在我的网站上为SSO实现dotnet-cas-client。我按照这里给出的文件https://github.com/apereo/dotnet-cas-client/wiki/Getting-Started。我能够连接到CAS服务器，我看到SSO的登录页面，但登录后我得到错误'页面重定向太多次'。我搜索了几个网站，并尝试了很多不同的东西，但我似乎无法解决这个问题。我尝试在我的webconfig中实现诊断部分来生成日志，以便我可以了解错误但没有生成日志。我粘贴在我的webconfig配置下面。有人可以让我知道我做错了什么。如果您需要我的更多信息，请告诉我。
<?xml version="1.0" encoding="UTF-8"?>
<!--
For more information on how to configure your ASP.NET application, please visit
https://go.microsoft.com/fwlink/?LinkId=301879
-->
<configuration>
<configSections>
<section name="casClientConfig" type="DotNetCasClient.Configuration.CasClientConfiguration, DotNetCasClient" />
</configSections>
<appSettings>
<add key="webpages:Version" value="3.0.0.0" />
<add key="webpages:Enabled" value="false" />
<add key="ClientValidationEnabled" value="true" />
<add key="UnobtrusiveJavaScriptEnabled" value="true" />
<add key="ValidationSettings:UnobtrusiveValidationMode" value="None" />
</appSettings>
<connectionStrings>
<add name="TestConnectionString" connectionString="Data Source=localhost;Initial Catalog=clinical;Persist Security Info=True; Integrated Security=SSPI;" providerName="System.Data.SqlClient" />
</connectionStrings>
<system.diagnostics>
<trace autoflush="true" useGlobalLock="false" />
<sharedListeners>
<!--
Writing trace output to a log file is recommended.
IMPORTANT:
The user account under which the containing application pool runs
must have privileges to create and modify the trace log file.
-->
<add name="TraceFile"
type="System.Diagnostics.TextWriterTraceListener"
initializeData="C:\inetpub\logs\LogFiles\DotNetCasClient.Log"
traceOutputOptions="DateTime" />
</sharedListeners>
<sources>
<!-- Provides diagnostic information on module configuration parameters. -->
<source name="DotNetCasClient.Config" switchName="Config" switchType="System.Diagnostics.SourceSwitch" >
<listeners>
<add name="TraceFile" />
</listeners>
</source>
<!-- Traces IHttpModule lifecycle events and meaningful operations performed therein. -->
<source name="DotNetCasClient.HttpModule" switchName="HttpModule" switchType="System.Diagnostics.SourceSwitch" >
<listeners>
<add name="TraceFile" />
</listeners>
</source>
<!-- Provides protocol message and routing information. -->
<source name="DotNetCasClient.Protocol" switchName="Protocol" switchType="System.Diagnostics.SourceSwitch" >
<listeners>
<add name="TraceFile" />
</listeners>
</source>
<!-- Provides details on security operations and notable security conditions. -->
<source name="DotNetCasClient.Security" switchName="Security" switchType="System.Diagnostics.SourceSwitch" >
<listeners>
<add name="TraceFile" />
</listeners>
</source>
</sources>
<switches>
<!--
Set trace switches to appropriate logging level. Recommended values in order of increasing verbosity:
- Off
- Error
- Warning
- Information
- Verbose
-->
<!--
Config category displays detailed information about CasAuthenticationModule configuration.
The output of this category is only displayed when the module is initialized, which happens
for the first request following application/server startup.
-->
<add name="Config" value="Verbose"/>
<!--
Set this category to Verbose to trace HttpModule lifecycle events in CasAuthenticationModule.
This category produces voluminous output in Verbose mode and should be avoided except for
limited periods of time troubleshooting vexing integration problems.
-->
<add name="HttpModule" value="Verbose"/>
<!--
Set to Verbose to display protocol messages between the client and server.
This category is very helpful for troubleshooting integration problems.
-->
<add name="Protocol" value="Verbose"/>
<!--
Displays important security-related information.
-->
<add name="Security" value="Verbose"/>
</switches>
</system.diagnostics>
<system.web>
<authentication mode="Forms">
<forms name=".DotNetCasClientAuth" loginUrl="https://cas.server.com/cas/login" timeout="30" cookieless="UseCookies" defaultUrl="~/Default.aspx" path="/" />
</authentication>
<customErrors mode="Off" />
<compilation targetFramework="4.7.1" debug="true">
<assemblies>
<add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
<add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</assemblies>
</compilation>
<httpRuntime targetFramework="4.7.1" />
<httpModules>
<add name="DotNetCasClient" type="DotNetCasClient.CasAuthenticationModule,DotNetCasClient" />
<add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" />
</httpModules>
<authorization>
<allow users = "*" />
</authorization>
<roleManager enabled="true" defaultProvider="AspNetReadOnlyXmlRoleProvider">
<providers>
<add name="AspNetReadOnlyXmlRoleProvider" type="DotNetCasClient.Security.ReadOnlyXmlRoleProvider" xmlFileName="~/App_Data/UserRoles.xml"/>
</providers>
</roleManager>
<siteMap enabled="true">
<providers>
<clear/>
<add siteMapFile="Web.sitemap" name="AspNetXmlSiteMapProvider" type="System.Web.XmlSiteMapProvider"/>
</providers>
</siteMap>
<pages enableEventValidation="false" >
<controls>
<add tagPrefix="cas" tagName="CookieViewer" src="~/Controls/CookieViewer.ascx"/>
<add tagPrefix="cas" tagName="TicketManager" src="~/Controls/TicketManager.ascx"/>
</controls>
</pages>
</system.web>
<system.webServer>
<defaultDocument>
<files>
<remove value="iisstart.htm" />
<remove value="index.htm" />
<remove value="index.html" />
<remove value="Default.asp" />
<remove value="Default.htm" />
<add value="index.aspx" />
</files>
</defaultDocument>
<handlers>
<remove name="ExtensionlessUrlHandler-Integrated-4.0" />
<remove name="OPTIONSVerbHandler" />
<remove name="TRACEVerbHandler" />
<add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
</handlers>
<modules>
<remove name="TelemetryCorrelationHttpModule" />
<remove name="DotNetCasClient" />
<add name="DotNetCasClient" type="DotNetCasClient.CasAuthenticationModule,DotNetCasClient" />
<add name="TelemetryCorrelationHttpModule" type="Microsoft.AspNet.TelemetryCorrelation.TelemetryCorrelationHttpModule, Microsoft.AspNet.TelemetryCorrelation" preCondition="integratedMode,managedHandler" />
<remove name="ApplicationInsightsWebTracking" />
<add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" preCondition="managedHandler" />
</modules>
<validation validateIntegratedModeConfiguration="false" />
<rewrite>
<rules>
<rule name="HTTPS redirect" enabled="false">
<match url="(.*)" />
<conditions>
<add input="{HTTPS}" pattern="^OFFS" />
</conditions>
<action type="Rewrite" url="https://{HTTP_HOST}/{R:1}" />
</rule>
</rules>
</rewrite>
</system.webServer>
<runtime>
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="Antlr3.Runtime" publicKeyToken="eb42632606e9261f" />
<bindingRedirect oldVersion="0.0.0.0-3.5.0.2" newVersion="3.5.0.2" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Diagnostics.DiagnosticSource" publicKeyToken="cc7b13ffcd2ddd51" />
<bindingRedirect oldVersion="0.0.0.0-4.0.2.1" newVersion="4.0.2.1" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />
<bindingRedirect oldVersion="0.0.0.0-11.0.0.0" newVersion="11.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="0.0.0.0-1.6.5135.21930" newVersion="1.6.5135.21930" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-5.2.4.0" newVersion="5.2.4.0" />
</dependentAssembly>
</assemblyBinding>
</runtime>
<system.codedom>
<compilers>
<compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.8.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
<compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.8.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+" />
</compilers>
</system.codedom>
<casClientConfig casServerLoginUrl="https://cas.server.com/cas/login" casServerUrlPrefix="https://cas.server.com/cas/" serverName="https://mywebsite.com/" redirectAfterValidation="true" renew="false" singleSignOut="true" ticketTimeTolerance="5000" ticketValidatorName="Cas20" serviceTicketManager="CacheServiceTicketManager" />
</configuration>
我通过更改它们应该生成的位置来获取日志。重定向循环是由403禁止错误引起的。在调查之后，我发现我连接的CAS服务器不允许通过端口443与我通信，因为该端口被阻止。一旦端口打开，CAS就开始工作了。