* move gossip/NCP off assuming anything about its address
* use a single socket to send and receive gossip
* remove --addr/-a from CLIs
* rearrange networking utility code
* use Arc<UdpSocket> to share the Sync-safe UdpSocket among threads
* rename TestNode to Node
TODO:
* re-enable 127.0.0.1 as a valid address in crdt
* change repair request/response to a similar, single socket
* pick cloned sockets or Arc<UdpSocket> for all these (rpu uses tryclone())
* update contact_info with network truthiness instead of what the node
says?
UPnP is now used to request a port on the NAT be forwarded to the local machine.
This obviously only works for NATs that support UPnP, and thus is not a panacea
for all NAT-related connectivity issues.
Notable hacks in this patch include a transmit/receive UDP socket pair to work
around current protocol limitations whereby the full node assumes its peer can
receive on the same UDP port it transmitted from.
Rob Walker
Michael Vines
anatoly yakovenko
Tyera Eulberg
Greg Fitzgerald
Tyera Eulberg