HttpContext Current Session is null when routing requests

Question

Without routing  HttpContext Current Session is there so I know that the StateServer is working  When I route my requests  HttpContext Current Session is null in the routed page  I am using  NET 3 5 sp1 on IIS 7 0  without the MVC previews  It appears that AcquireRequestState is never fired when using the routes and so the session variable isn t instantiated filled   When I try to access the Session variables  I get this error   base  System Runtime InteropServices ExternalException      Session state can only be used when enableSessionState is set to true  either in a configuration file or in the Page directive  Please also make sure that System Web SessionStateModule or a custom session state module is included in the  lt configuration gt    While debugging  I also get the error that the HttpContext Current Session is not accessible in that context   --  My web config looks like this    lt configuration gt           lt system web gt       lt pages enableSessionState  true  gt         lt controls gt                     lt  controls gt       lt  pages gt             lt  system web gt     lt sessionState cookieless  AutoDetect  mode  StateServer  timeout  22    gt         lt  configuration gt    Here s the IRouteHandler implementation   public class WebPageRouteHandler   IRouteHandler  IRequiresSessionState       public string m VirtualPath   get  private set        public bool m CheckPhysicalUrlAccess   get  set         public WebPageRouteHandler string virtualPath    this virtualPath  false                  public WebPageRouteHandler string virtualPath  bool checkPhysicalUrlAccess                m VirtualPath   virtualPath          m CheckPhysicalUrlAccess   checkPhysicalUrlAccess             public IHttpHandler GetHttpHandler RequestContext requestContext                if  m CheckPhysicalUrlAccess              amp  amp   UrlAuthorizationModule CheckUrlAccessForPrincipal                     m VirtualPath                     requestContext HttpContext User                     requestContext HttpContext Request HttpMethod                         throw new SecurityException                       string var   String Empty          foreach  var value in requestContext RouteData Values                        requestContext HttpContext Items value Key    value Value                     Page page   BuildManager CreateInstanceFromVirtualPath                          m VirtualPath                           typeof Page   as Page    IHttpHandler           if  page    null                        return page                    return page            I ve also tried to put EnableSessionState  True  on the top of the aspx pages but still  nothing   Any insights  Should I write another HttpRequestHandler that implements IRequiresSessionState   Thanks

User · Answer

What  Bogdan Maxim said   Or change to use InProc if you re not using an external sesssion state server    lt sessionState mode  InProc  timeout  20  cookieless  AutoDetect    gt    Look here for more info on the SessionState directive

User · Answer

Just add attribute runAllManagedModulesForAllRequests  true  to system webServer modules in web config   This attribute is enabled by default in MVC and Dynamic Data projects

User · Answer

None of these solutions worked for me  I added the following method into global asax cs then Session was not null   protected void Application PostAuthorizeRequest         HttpContext Current SetSessionStateBehavior SessionStateBehavior Required

User · Answer

Got it  Quite stupid  actually  It worked after I removed  amp  added the SessionStateModule like so    lt configuration gt           lt system webServer gt               lt modules gt         lt remove name  Session    gt         lt add name  Session  type  System Web SessionState SessionStateModule   gt                 lt  modules gt     lt  system webServer gt   lt  configuration gt    Simply adding it won t work since  Session  should have already been defined in the machine config   Now  I wonder if that is the usual thing to do  It surely doesn t seem so since it seems so crude

User · Answer

It seems that you have forgotten to add your state server address in the config file     lt sessionstate mode  StateServer  timeout  20  server  127 0 0 1  port  42424    gt

User · Answer

Just add attribute runAllManagedModulesForAllRequests  true  to system webServer modules in web config   This attribute is enabled by default in MVC and Dynamic Data projects

User · Answer

Nice job   I ve been having the exact same problem   Adding and removing the Session module worked perfectly for me too   It didn t however bring back by HttpContext Current User so I tried your little trick with the FormsAuth module and sure enough  that did it    lt remove name  FormsAuthentication    gt   lt add name  FormsAuthentication  type  System Web Security FormsAuthenticationModule   gt

User · Answer

Nice job   I ve been having the exact same problem   Adding and removing the Session module worked perfectly for me too   It didn t however bring back by HttpContext Current User so I tried your little trick with the FormsAuth module and sure enough  that did it    lt remove name  FormsAuthentication    gt   lt add name  FormsAuthentication  type  System Web Security FormsAuthenticationModule   gt

User · Answer

runAllManagedModulesForAllRequests true is actually a real bad solution  This increased the load time of my application by 200   The better solution is to manually remove and add the session object and to avoid the run all managed modules attribute all together

User · Answer

What  Bogdan Maxim said   Or change to use InProc if you re not using an external sesssion state server    lt sessionState mode  InProc  timeout  20  cookieless  AutoDetect    gt    Look here for more info on the SessionState directive

User · Answer

I think this part of code make changes to the context    Page page   BuildManager CreateInstanceFromVirtualPath                          m VirtualPath                           typeof Page   as Page    IHttpHandler    Also this part of code is useless    if  page    null          return page      return page    It will always return the page wither it s null or not

User · Answer

Got it  Quite stupid  actually  It worked after I removed  amp  added the SessionStateModule like so    lt configuration gt           lt system webServer gt               lt modules gt         lt remove name  Session    gt         lt add name  Session  type  System Web SessionState SessionStateModule   gt                 lt  modules gt     lt  system webServer gt   lt  configuration gt    Simply adding it won t work since  Session  should have already been defined in the machine config   Now  I wonder if that is the usual thing to do  It surely doesn t seem so since it seems so crude

User · Answer

a better solution is     runAllManagedModulesForAllRequest is a clever thing to do respect removing and resinserting session module   alk

User · Answer

runAllManagedModulesForAllRequests true is actually a real bad solution  This increased the load time of my application by 200   The better solution is to manually remove and add the session object and to avoid the run all managed modules attribute all together

User · Answer

The  config section seems sound as it works if when pages are accessed normally  I ve tried the other configurations suggested but the problem is still there    I doubt the problem is in the Session provider since it works without the routing

User · Answer

I think this part of code make changes to the context    Page page   BuildManager CreateInstanceFromVirtualPath                          m VirtualPath                           typeof Page   as Page    IHttpHandler    Also this part of code is useless    if  page    null          return page      return page    It will always return the page wither it s null or not

User · Answer

It seems that you have forgotten to add your state server address in the config file     lt sessionstate mode  StateServer  timeout  20  server  127 0 0 1  port  42424    gt

User · Answer

I think this part of code make changes to the context    Page page   BuildManager CreateInstanceFromVirtualPath                          m VirtualPath                           typeof Page   as Page    IHttpHandler    Also this part of code is useless    if  page    null          return page      return page    It will always return the page wither it s null or not

User · Answer

What  Bogdan Maxim said   Or change to use InProc if you re not using an external sesssion state server    lt sessionState mode  InProc  timeout  20  cookieless  AutoDetect    gt    Look here for more info on the SessionState directive

User · Answer

Just add attribute runAllManagedModulesForAllRequests  true  to system webServer modules in web config   This attribute is enabled by default in MVC and Dynamic Data projects

User · Answer

a better solution is     runAllManagedModulesForAllRequest is a clever thing to do respect removing and resinserting session module   alk

User · Answer

Nice job   I ve been having the exact same problem   Adding and removing the Session module worked perfectly for me too   It didn t however bring back by HttpContext Current User so I tried your little trick with the FormsAuth module and sure enough  that did it    lt remove name  FormsAuthentication    gt   lt add name  FormsAuthentication  type  System Web Security FormsAuthenticationModule   gt

User · Answer

The  config section seems sound as it works if when pages are accessed normally  I ve tried the other configurations suggested but the problem is still there    I doubt the problem is in the Session provider since it works without the routing

User · Answer

What  Bogdan Maxim said   Or change to use InProc if you re not using an external sesssion state server    lt sessionState mode  InProc  timeout  20  cookieless  AutoDetect    gt    Look here for more info on the SessionState directive

User · Answer

I was missing a reference to System web mvc dll in the session adapter  and adding the same fixed the issue   Hopefully it will help someone else going through same scenario

User · Answer

None of these solutions worked for me  I added the following method into global asax cs then Session was not null   protected void Application PostAuthorizeRequest         HttpContext Current SetSessionStateBehavior SessionStateBehavior Required

User · Answer

Just add attribute runAllManagedModulesForAllRequests  true  to system webServer modules in web config   This attribute is enabled by default in MVC and Dynamic Data projects

User · Answer

It seems that you have forgotten to add your state server address in the config file     lt sessionstate mode  StateServer  timeout  20  server  127 0 0 1  port  42424    gt

User · Answer

It seems that you have forgotten to add your state server address in the config file     lt sessionstate mode  StateServer  timeout  20  server  127 0 0 1  port  42424    gt

User · Answer

Nice job   I ve been having the exact same problem   Adding and removing the Session module worked perfectly for me too   It didn t however bring back by HttpContext Current User so I tried your little trick with the FormsAuth module and sure enough  that did it    lt remove name  FormsAuthentication    gt   lt add name  FormsAuthentication  type  System Web Security FormsAuthenticationModule   gt

User · Answer

I was missing a reference to System web mvc dll in the session adapter  and adding the same fixed the issue   Hopefully it will help someone else going through same scenario

User · Answer

Got it  Quite stupid  actually  It worked after I removed  amp  added the SessionStateModule like so    lt configuration gt           lt system webServer gt               lt modules gt         lt remove name  Session    gt         lt add name  Session  type  System Web SessionState SessionStateModule   gt                 lt  modules gt     lt  system webServer gt   lt  configuration gt    Simply adding it won t work since  Session  should have already been defined in the machine config   Now  I wonder if that is the usual thing to do  It surely doesn t seem so since it seems so crude

User · Answer

The  config section seems sound as it works if when pages are accessed normally  I ve tried the other configurations suggested but the problem is still there    I doubt the problem is in the Session provider since it works without the routing

User · Answer

The  config section seems sound as it works if when pages are accessed normally  I ve tried the other configurations suggested but the problem is still there    I doubt the problem is in the Session provider since it works without the routing

User · Answer

Got it  Quite stupid  actually  It worked after I removed  amp  added the SessionStateModule like so    lt configuration gt           lt system webServer gt               lt modules gt         lt remove name  Session    gt         lt add name  Session  type  System Web SessionState SessionStateModule   gt                 lt  modules gt     lt  system webServer gt   lt  configuration gt    Simply adding it won t work since  Session  should have already been defined in the machine config   Now  I wonder if that is the usual thing to do  It surely doesn t seem so since it seems so crude

User · Answer

I think this part of code make changes to the context    Page page   BuildManager CreateInstanceFromVirtualPath                          m VirtualPath                           typeof Page   as Page    IHttpHandler    Also this part of code is useless    if  page    null          return page      return page    It will always return the page wither it s null or not

[c#] HttpContext.Current.Session is null when routing requests

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