[dev] Load balancer SSL session hooks

[Grzegorz Nosek]

Hello,

I have a question about the SSL hooks in load balancer modules, i.e.:

#if (NGX_SSL)
ngx_event_set_peer_session_pt    set_session;
ngx_event_save_peer_session_pt   save_session;
#endif

inside struct ngx_peer_connection_s. How are they used? When are they
called? I implemented them "blindly" for upstream_fair as I don't
remember ever seeing them called. They look like support for https
proxying but I can't see the bigger picture.

Best regards,
 Grzegorz Nosek