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From Oleg Kalnichevski <ol...@apache.org>
Subject Re: Using basic auth produces warnings about NTLM and NEGOTIATE errors.
Date Tue, 11 Feb 2014 15:44:09 GMT
On Wed, 2014-02-12 at 02:21 +1100, Brett Ryan wrote:
> Thanks Oleg, I've added this to the client, yet I am still getting the same
> warnings.
> 
>     Lookup<AuthSchemeProvider> authProviders =
> RegistryBuilder.<AuthSchemeProvider>create()
>             .register(AuthSchemes.BASIC, new BasicSchemeFactory())
>             .build();
>     RequestConfig rc = RequestConfig.custom()
>             .setTargetPreferredAuthSchemes(Arrays.asList("BASIC"))
>             .build();
>     BasicCredentialsProvider credsProvider = new BasicCredentialsProvider();
>     credsProvider.setCredentials(AuthScope.ANY, null);
>     client = HttpClients.custom()
>             .setDefaultCredentialsProvider(credsProvider)
>             .setDefaultAuthSchemeRegistry(authProviders)
>             .setDefaultRequestConfig(rc)
> 
> .setTargetAuthenticationStrategy(TargetAuthenticationStrategy.INSTANCE)
>             .build();
> 

Can happen if the proxy auth strategy tries to pick up an auth scheme
from the list of preferred schemes still containing NTLM and SPNEGO. 

Oleg

> 
> 
> On 12 February 2014 00:58, Oleg Kalnichevski <olegk@apache.org> wrote:
> 
> > On Tue, 2014-02-11 at 14:20 +1100, Brett Ryan wrote:
> > > If a server supports NTLM and Kerberos authentication, but when setting
> > up the client I only provide basic credentials I get a log for each of the
> > NTLM and NEGOTIATE authentication schemes.
> > >
> > > Taking the example from :
> > https://hc.apache.org/httpcomponents-client-4.3.x/httpclient/examples/org/apache/http/examples/client/ClientAuthentication.java
> > >
> > >     CredentialsProvider credsProvider = new BasicCredentialsProvider();
> > >     credsProvider.setCredentials(
> > >             new AuthScope(null, -1),
> > >             new UsernamePasswordCredentials(restUser, restPass));
> > >     CloseableHttpClient client = HttpClients.custom()
> > >             .setDefaultCredentialsProvider(credsProvider)
> > >             .build();
> > >
> > > Use of the above client will produce the following warnings, though
> > requests succeed fine through basic authentication:
> > >
> > >     WARN  o.a.http.impl.auth.HttpAuthenticator - NEGOTIATE
> > authentication error: Invalid name provided (Mechanism level: KrbException:
> > Cannot locate default realm)
> > >     WARN  o.a.http.impl.auth.HttpAuthenticator - NTLM authentication
> > error: Credentials cannot be used for NTLM authentication:
> > org.apache.http.auth.UsernamePasswordCredentials
> > >
> > > So I figured after searching through the builder method that I'd supply
> >  an auth provider with only basic support:
> > >
> > >     Lookup<AuthSchemeProvider> authProviders =
> > RegistryBuilder.<AuthSchemeProvider>create()
> > >             .register(AuthSchemes.BASIC, new BasicSchemeFactory())
> > >             .build();
> > >     CloseableHttpClient client = HttpClients.custom()
> > >             .setDefaultCredentialsProvider(credsProvider)
> > >             .setDefaultAuthSchemeRegistry(authProviders)
> > >             .build();
> > >
> > > But now I get a different warning about the scheme's no longer being
> > enabled.
> > >
> > >     WARN  o.a.h.i.c.TargetAuthenticationStrategy - Authentication scheme
> > negotiate not supported
> > >     WARN  o.a.h.i.c.TargetAuthenticationStrategy - Authentication scheme
> > NTLM not supported
> > >
> > > How do I simply get rid of these warnings and only get the client to use
> > the basic scheme that I've configured?
> >
> > ---
> > RequestConfig config = RequestConfig.custom()
> >         .setTargetPreferredAuthSchemes(Arrays.asList("BASIC"))
> >         .build();
> > HttpGet get = new HttpGet("/");
> > get.setConfig(config);
> > ---
> >
> > Hope this helps
> >
> > Oleg
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: httpclient-users-unsubscribe@hc.apache.org
> > For additional commands, e-mail: httpclient-users-help@hc.apache.org
> >
> >



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