The underlying connection was closed

Question

Why does the following error occur? The underlying connection was closed: An unexpected error occurred on a receive. at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request) I'm using web services from ASP.NET application, and I use two different services. It's strange, because other methods from this service work well, but whenever I call one given method, it gives this error.

sacresp · Answer

The problem is, that I've not authored the services (and don't have access to source code). But you are sure that it is just a coding error in the service, and nothing mysterious having to do with framework's web service implementation? If that's true, then maybe somebody can fix the services. Thanks.

james · Answer

Well, I normally debug my web services locally and can trap any errors that way. I'm sure you could debug remotely or you could throw in a try/catch and write the error out to the event log or a text file. -James

sacresp · Answer

Does it give this error message, if service throws whatever exception? I think I've got the real error messages from web service, when there haev been a problem. I don't think it's security problem, because it's only one method on that service ( and now I found another problematic method in another service). All the web services are just "entry methods" for business logic (Serviced Components).

james · Answer

something in the web service threw an unhandled exception, most likely due to a security issue... the aspnet_wp worker process does not inherit the rights from IIS (like you would think), you have to specify a user in the machine.config file on the web server.