In our project we have had great problems when debugging web services in Visual Studio. For about half of the the request on of two exceptions has been thrown:
- System.Net.WebException: The request failed with HTTP status 400: Bad Request.
- System.Net.Sockets.SocketException: The underlying connection was closed
After some looking into i found a solution and it was (as ever) quite
easy. You simply have to set credentials on the web service as
Dim m_wsService wsSystemName.SystemNameService = New wsSystemName.SystemNameServicem_wsService.Credentials = System.Net.CredentialCache.DefaultNetworkCredentialsm_wsService.PreAuthenticate = True
I have not observed this problem in C# so i presume that it is VB.NET
related… or i might just be bad.