Bad Request/Underlying connection was closed problem solved

Posted by Marcus Hammarberg on May 31, 2007
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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 follows:

Dim m_wsService wsSystemName.SystemNameService = New wsSystemName.SystemNameService
m_wsService.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials
m_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.

Published by Marcus Hammarberg on Last updated