POCO and Kerberos authentication

[Test149000]

Hi,
I am using POCO to send http requests to a server with HTTPClientSession class. Requests must go through a proxy (ok with HTTPClientSession->setProxyConfig). When the proxy requires NTLM authentication, it works with the authentication method "Poco::Net::HTTPClientSession::ProxyAuthentication::PROXY_AUTH_NTLM". But when the proxy requires KERBEROS authentication, there is no authentication method. Do you know if it is possible, with POCO, to send http requests through a proxy that requires Kerberos authentication?