stream reuse, check incoming messages from rbtree in outnet_tcp_cb when read a reply, and call that callback and remove that entry.
stream reuse, check incoming messages from rbtree in outnet_tcp_cb when
read a reply, and call that callback and remove that entry.

NLnetLabs/unbound,NLnetLabs/unbound,NLnetLabs/unbound,NLnetLabs/unbound