this commit moves management of the nat to its own object.
perhaps this can be general enough to work with any host
(not just BasicHost), but for now keeping here.
the nat manager:
- discovers and sets up the nat asynchronously.
- adds any port mappings necessary if/after nat has been found.
- listens to the network Listen() changes, adding/closing mappings
Network now signals when it successfully listens on some address
or when an address shuts down. This will be used to establish and
close nat port mappings. It could also be used to notify peers
of address changes.
network interface now allows setting Listeners after the fact.
This is useful to create the network and start listening as
separate steps. And to keep the network up to date on new
addresses the node might have to listen to.
This commit turns all dial logs into log.Events.
Everything's great except for one problem:
The LoggableMap I'm using does not print out things
correctly. I gave it peer.IDs, and Multiaddrs
and both got logged as nothing `{}` (didn't even call
their String() methods!) So, for now, this function
encodes it when called... This is wrong and should be
fixed before being merged in. Otherwise we will be
constantly encoding peer.IDs and Multiaddrs without
needing to.
@briantigerchow how do you suggest doing this?
I don't know my way around your Loggable.
This commit cleans up the reuse port setup, and fixes a problem:
make sure to filter addrs out that we simply cannot dial with
(e.g. loopback -> non-loopback, or linklocal -> nonlinklocal)
This commit finally makes use of the sent observed addrs.
If the connection's local address is from one of our
listen addrs, then the remote's observed addr is its
natted mapping, which is useful to us. For now, we add
it directly to our address book. (a future commit should
make addressbook addresses expire)
