问题
We have an array of about 12 servers serving a website. Over the past few hours, one single server has started throwing exceptions for WebResource.axd and ScriptResource.axd requests.
Exception
System.Web.HttpException - This is an invalid script resource request.
Stack Trace
at System.Web.Handlers.ScriptResourceHandler.ProcessRequest(HttpContext context)
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Broken server URL
/WebResource.axd?d=S6kjkBsrIKni9uO5HCkv0c8eYObzibWXn9R6A7Yr_Fy7CW4dRFZm1HfcnUTEZ8xBYZDM-5zeTVk1tTgC1hp7d5YYw3o1&t=634308186300177825
All other servers URL
/WebResource.axd?d=yj6PW1hbOvqhMkOh2gYGlw2&t=634207187366247462
I have checked the web.config, machine.config for every server and they're all identical. The only difference been able to find so far is that prior to the problem commencing, the servers were patched, after which, the problematic server looks to be using different version of the System.Web.dll to the others?
Any ideas?
回答1:
Found the root cause of the problem. The problem server had a security patch applied which updated System.Web.dll. For some reason our hosting provider didn't update any of the other dll's and in turn this server was generating different encryption keys to the others.
To work out which dll was affected, I used the following to decrypt the webresource.axd query string parameters:
http://blogs.telerik.com/aspnet-ajax/posts/07-03-27/debugging-asp-net-2-0-web-resources-decrypting-the-url-and-getting-the-resource-name.aspx
回答2:
The "?d=yj6PW1hbOvqhMkOh2gYGlw2&t=634207187366247462" is a link somehow (hash or something?) to a resource in the system.web.dll, so understandably with different dll's on that server the link isn't valid.
来源：https://stackoverflow.com/questions/4718413/webresource-axd-throwing-exceptions-in-web-farm