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Why does localhost in web references cause SocketExceptions?
原标题:

I have two .net web services deployed to the same IIS server using SSL, one that references the other.

If I set that web reference to localhost , some calls fail with this exception:

System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it

If I set it to the actual machine name, it works.

Why?

问题回答

I suspect you ll find that IIS is configured to listen for requests on the "real" network interface but not on the loopback adapter.

You should be able to see this with a plain browser - try going to https://localhost on the box and see what happens.

The 127.0.0.1 possibly can resolve the problem. Why? I dont know- get from the experiments.





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