Fix proxy SPNego authentication to respect krb5.conf canonicalization settings. #541
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This PR changes
SPNegoSchemeFactoryconstructor inProxyUtils.javato useuseCanonicalHostname=false, deferring hostname canonicalization to the Kerberos library based onkrb5.confconfiguration instead of forcing it at the SDK level.The previous implementation forced hostname canonicalization for proxy Kerberos authentication, overriding user-configured
krb5.conf settings (rdns, dns_canonicalize_hostname). This caused authentication failures in environments with specific Kerberos configurations.Client libraries should respect system Kerberos configuration rather than override it. This fix makes the SDK compliant with standard Kerberos behavior.
Migration note: Users whose non-compliant Kerberos setups were accidentally working due to forced canonicalization may need to verify their
krb5.confsettings are correctly configured.