notes-flow.txt

common:
  corrId - random BS, used as CbNonce
  entityId - p2r tlsUniq

# setup
s->p: "proxy", uri, auth?
  # unless connected
  p->r: "p_handshake"
  p<-r: "r_key", tls-signed dh pub
s<-r: "r_key", tls-signed dh pub # reply entityId contains tlsUniq

# working
s ; generate random dh priv, make shared secret
s->p: s2r("forward", random dh pub, SEND command blob)
  p->r: p2r("forward", random dh pub, s2r("forward", ...)))
    r->c@ "msg", ...
  p<-r: p2r("r_res", s2r("ok" / "error", error))
s<-p@ s2r("ok" / "error", error)

# expired
  p<-r@ p2r("error", "key expired")
s<-p@ "error", "key expired"
s ; reconnect