This package provide the implementation of the SIP parts of the
Converged Load Balancer.
The function is divided into the handling of incoming messages
{@link SipLoadBalancerIncomingHandler} and {@link
SipLoadBalancerBackend}.
{@link SipLoadBalancerIncomingHandler} will be present on an
instance depending on configuration. In case the cluster is
self-balancing (i.e. all instances performs load balancing and also
takes traffic), the {@link SipLoadBalancerIncomingHandler} is present on
all instances. In case the cluster is a pure back-end cluster (fronted
by a dedicated load balancer), the {@link
SipLoadBalancerIncomingHandler} is only present on the fronting load
balancer.
{@link SipLoadBalancerIncomingHandler} handles all incoming
requests and responses and determines whether to process locally or
proxy the request to another server instance. It extracts the hash key
or route from the message and uses consistent hash to select the serving
instance. It also encodes/decodes client certificates.
{@link SipLoadBalancerBackend} is present on all server
instances and performs stamping of hash key/route into outgoing
messages.