#1239 Use net.connect for outgoing s2s connections
Description of feature:
Currently mod_s2s/s2sout implements SRV aware connection establishment for s2s.
Since the new net.connect API is meant to replace handling of outgoing connections,
this should eventually also be used for s2s.
- Code reduction and reuse
- Getting net.resolvers.service ready
- Easier future extension eg for _xmpps-server