About data transfer for no P2P connection

[ancly2008]

When a P2P connection cannot be established between two peers, the current solution is to transfer data through supernodes. Can future versions consider transferring data through other peers who have already established P2P connections? For example, in a community, peer1, peer2, peer3, peer4, peer1 and peer2, and peer3 are P2P, Peer1 and Peer4 are unable to establish a P2P connection. In this case, Peer1 can automatically select Peer2- Peer4, Peer3- Peer4, or Peer2- Peer3- Peer4, and can use the minimum RTT or minimum peer load to automatically select the intermediate path

[hamishcoleman]

The long-term plan for some time now has been to slowly merge the functionality of the edge and supernode, leaving just one daemon that can do both jobs.

Once that is done, it is hoped it would be simple to add more options to how the routing is done.

With the current level of time available, this is not likely to be any time soon.

Have you investigated what is stopping the P2P from working? There are a number of firewall or filtering changes you should be able to make on the routers involved. If the two devices are on the same broadcast domain, the multicast peer discovery should also help with this problem. There are also some n3n settings that might help - connection.advertise_addr, connection.bind, connection.register_interval and connection.register_pkt_ttl all have some impact on the way the P2P is established. (If you find settings that help, please report back so we can at least document what works well for people)

[ancly2008]

the two nodes work behind symmetric NAT , so establishing a P2P connection should be quite difficult
I have try to set connection.advertise_addr, connection.bind (2222), connection.register_interval (2or5) and connection.register_pkt_ttl (2-10), not help to fix this problem. Tun mode is always pSp.

[hamishcoleman]

The NAT piercing code within N3N is intended to work with two nodes behind symmetric NAT, so it is not impossible.

The connection.advertise_addr setting can also help when multiple routers or NAT has obscured the actual IP needed.

[ancly2008]

thank you for your reply , I have test connection.advertise_addr setting , not fix this problem