Alex Potsides 0a6bc0d101
feat: add UPnP NAT manager (#810)
* feat: add uPnP nat manager

Adds a really basic nat manager that attempts to use UPnP to punch
a hole through your router for any IPV4 tcp addresses you have
configured.

Adds any configured addresses to the node's observed addresses list
and adds observed addresses to `libp2p.multiaddrs` so we exchange
them with peers when performing `identify` and people can dial you.

Adds configuration options under `config.nat`

Hole punching is async to not affect start up time.

Co-authored-by: Vasco Santos <vasco.santos@moxy.studio>
2021-01-27 14:55:26 +01:00
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