How To Modify MachineKey For Session State Server
Jul 20, 2010
I'm trying to implement a SessionState server to allow multiple web servers to share the same state. At first this will be the different dev machines, and later it'll be the different web servers in the web farm.
So far, I'm making good progress I think, but one of the requirements has me confused. In order to implement this, I need to make sure that all web servers are using the same machine key.
This is a sample MachineKey taken from my local dev machine:
[Code]....
If we have a Session State Server deployed locally, do I need to ensure that all other machines using this service (specifically, the other devs working on the same project, and then when we deploy to the web farm) have the exact same entry in their Machine.Config files?
Or do I have to somehow generate a new machine key that can apply to all the machines?
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My website session was expired within seconds. I tried every possible solution but problem was same. Now i changed my session mode to stateserver, but when i logout from website its giving error. Unable to serialize the session state. In 'StateServer' and 'SQLServer' mode, ASP.NET will serialize the session state objects, and as a result non-serializable objects or MarshalByRef objects are not permitted. The same restriction applies if similar serialization is done by the custom session state store in 'Custom' mode. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
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Apr 15, 2010
Share session using server
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Aug 9, 2010
I have two exactly the same web sites hosted in two different machines under IIS 7.5.
ASP.NET state service is running on my machine and the web.config is updated in both sites with the following code:
<sessionState mode="StateServer" stateConnectionString="tcpip=192.168.1.77:42424" cookieless="false" timeout="120"/>
The allow remote connection is set to 1 in registry in order for the second web site to access the state server.Both web sites have the same machine key:
<machineKey validationKey="7CB8DF6872FB6B35DECD3A8F55582350FEE1FAB9BE6B930216056C1B5BA69A4C5777B3125A42C4AECB4419D43EC12F168FD1BB887469798093C3CAA2427B2B89"[code]....
Additionally both sites are configured in IIS to have the same Identifier.What I want to do is that both these sites share the same session data for example being able to do the following:
// At web site 1:
Session["key"] = "value"[code]....
The problem is that I can't manage to accomplish this test and really can't understand what I am doing wrong.
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Oct 14, 2010
We have been receiving reports of the following server error periodically from users.
[OutOfMemoryException: Exception of type System.OutOfMemoryException was thrown.]
[HttpException (0x80004005): Unable to serialize the session state.]
Please note that non-serializable objects or MarshalByRef objects are not permitted when session state mode is "StateServer" or "SQLServer".
Once in a state where this error appears, it appears to be hit or miss whether the errors are reproducible locally. If they are, then we can usually reproduce them for a couple minutes, but not on every page hit. This usually tapers off on its own and usually has resolved itself by the time we get back in contact with the users. The Web Service has around 90-100 active connections during business hours. The only other site on this server is the staging version of this site, which gets hit very infrequently. The Session State is stored on the same SQLServer instance as the application database which is housed on a fairly large cluster of virtual machines.
Neither the Web Server or the SQLServer seemed to be taxed (either processor or memory-wise) while this is going on. The distribution of which pages are erroring seems to be comparable to the normal distribution for each page. There doesn't appear to be any pattern in terms of times of occurrence. We do have less errors on average on weekends (which correlates to normal site load), but even this appears to not be consistent. There also doesn't appear to be a correlation between the errors logged and any kind of logged performance monitor events. This includes an array of perfmon counters including:
.NET CLR Jit(w3wp)
otal # of IL Bytes Jitted
.NET CLR Jit(w3wp)IL Bytes Jitted / sec
.NET CLR Jit(w3wp)\% Time in Jit
.NET CLR Jit(w3wp)# of Methods Jitted
.NET CLR Jit(w3wp)# of IL Bytes Jitted
ASP.NET Apps v1.1.4322(__Total__)Requests Failed
ASP.NET Apps v1.1.4322(__Total__)Errors Unhandled During Execution/Sec
ASP.NET Apps v1.1.4322(__Total__)Errors Unhandled During Execution
ASP.NET Apps v1.1.4322(__Total__)Cache Total Turnover Rate
ASP.NET Apps v1.1.4322(__Total__)Errors During Preprocessing
ASP.NET Apps v1.1.4322(__Total__)Errors During Execution
ASP.NET Apps v1.1.4322(__Total__)Requests Executing
ASP.NET Apps v1.1.4322(__Total__)Requests Total
ASP.NET Apps v1.1.4322(__Total__)Errors Total
ASP.NET Apps v1.1.4322(__Total__)Sessions Abandoned
ASP.NET Apps v1.1.4322(__Total__)Errors Total/Sec
ASP.NET Apps v1.1.4322(__Total__)Anonymous Requests/Sec
ASP.NET Apps v1.1.4322(__Total__)Requests/Sec
ASP.NET Apps v1.1.4322(__Total__)Session SQL Server connections total
ASP.NET Apps v1.1.4322(__Total__)Cache Total Hit Ratio
ASP.NET v1.1.4322Requests Current
ASP.NET v1.1.4322Request Execution Time
MemoryPages/sec
Bytes Total/sec
PhysicalDisk(_Total)Avg. Disk Queue Length
Processor(_Total)\% Processor Time
Web Service CacheFile Cache Hits %
Web Service CacheFile Cache Misses
Web Service CacheFile Cache Hits
Web Service(_Total)Current Connections
Web Service(_Total)Post Requests/sec)
The only pattern I can see in the logs doesn't correlate to the occurrence of these errors, but is the only pattern I can see. Looking at the perfmon logs we are seeing a pattern where the "Total # of IL Bytes Jitted", "IL Bytes Jitted / sec", "% Time in Jit", "# of Methods Jitted", and "# of IL Bytes Jitted" counters for the staging site (which shouldn't be getting any traffic) doesn't pull data for a 20-50 minute period after which there is an immediate spike in "IL Bytes Jitted / sec" and a jump in "% Time in Jit" for 2-20 minute of up to 99% for the main site.
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Jun 17, 2010
know for how long the session values will be available when the mode is state server?
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Feb 25, 2011
So we have three 2008 R2 Servers where two are configured to be web servers (IIS 7.5), and the third a session state server. I have set the SessionState and MachineKey settings in the applications web.config. After I restart the two web servers I can log into one server, then change the IP address to the other server, and I am still logged in. Success.
I can typically log in/out with any user account I want, change the ip address back and forth, and all is well until some random time between 30-60 minutes when I log in to one server, change the IP address, and the new server asks for credentials.
This is the sessionState setting in both web.configs:
<sessionState mode="StateServer" stateConnectionString="tcpip=xxx.xxx.xxx.xxx:42424" cookieless="false" timeout="30"/>
The application resides under the default web site, and uses the default application pool. I am using forms authentication with a timeout of 20 minutes. I am not receiving any error events on any of the three servers when this happens, and restarting the two web servers fixes the problem for a while. The two web servers are not clustered per-se, but will be served round-robin via a network device.
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Apr 4, 2011
How, or maybe where, is the session timeout handled when you set SQL Server as state handler in an ASP.NET application?
Is it the .NET framwork who after loading session objects from the DB does a judgement on whether or not the objects are expired, or is it a job on the SQL Server itself that takes care of this? The reason I suspect (or even concidered) the latter possibility, is that the script that created the ASPState mentioned something about a ASPState_Job_DeleteExpiredSessions-element.
If it is so that it is an SQL Server job that cleans up, how often does this job trigger and how does it align with the timeout parameter in web.config?
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Jun 3, 2010
get the list of all sessionid which will be running onto server without storing them anywhere.
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Mar 26, 2010
when i run my web application in my system the session not expired during access of the pages, but when i launch application in the remote server the session expired during access of the pages
i specifiy the session time out in web.config as follows
<sessionState mode="InProc" cookieless="false" timeout="30" />
But i don't know what the problem is
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Feb 6, 2011
I have this setting in web config for session.
[Code]....
On localhost works well. On the hosting server expires very quickly. Sometimes after a minute, and sometimes after a few minutes.
I tried mode="StateServer" and mode="SQLServer", but first works the same, other doesn't work. The next problem is that End_Session in global.asax doesn't executes if mode is not InProc. And I need this.
How could I achive that session expires only when browser is closed or other url is typed. Just setting timeout doesn't work.
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Jun 6, 2010
I have an scenario where, in the test server the timeout works fine, as defined in the web.config (60 minutes) but it ends prematurely (3 minutes or so) in the MSSQL server. Both are using tables from the MSSQL, the only difference resides in the App_Data folder, which is not in the MSSQL server, as the roles and membership are managed by the LocalSqlServer.
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Nov 17, 2010
This is the strangest problem im facing(may be i missed something). The application works fine locally, but when uploaded on the live server. the session values are not retrieved properly.
i have stored a value in a session in master page's code behind. and afte the page is redirected is to another page, there im not able to retrieve the session value.
why this is hapening.. i remind you this is working perfectly on local server. problem is only when published on live server.
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