Resources with mode Dynamic requiring authentication causes problems.

[mvestergaard]

We use combres in our application which is mostly meant for intranet purposes. This means that the site in most cases requires authentication.

Some of the resources we use are dynamic. When combres tries to load these it causes a 401 authentication error. As far as i can tell this is because combres will request the resource using a WebClient, however this web client does not use the credentials of the user logged onto the site, and therefore does not have access.

Would it be possible to set the WebClient.UseDefaultCredentials property to true? This should cause the WebClient to use the same credentials as the current request when using impersonation.

Perhaps make it an extra setting that can be setup per resource.

[mvestergaard]

I've forked the project and made changes that I think will fix the problem. I'll create a pull request once I've been able to validate.

https://github.com/mvestergaard/combres/commit/3c0b236e3fecdab75a7470be0d5133374eba799b

[mvestergaard]

UseDefaultCredentials did not solve the problem. For now I'll go back to loading the dynamic resources without combres, and just rely on browser caching to prevent too many extra requests.

[buunguyen]

Have you tried adding the auth type? See this post: http://stackoverflow.com/questions/1680718/domain-credentials-for-a-webclient-class-dont-work.

CredentialCache cc = new CredentialCache();
cc.Add(
    new Uri("http://intranet/"), 
    "NTLM", 
    new NetworkCredential("username", "pass", "domain")); // also try with CredentialCache.DefaultCredentials
client.Credentials = cc;