libp2p network issues

[chhsiao1981]

Version information:

Version: 0.1.0-unstable
Git Commit: b8de7e6
Architecture: amd64
Go Version: go1.10.4
Operating System: darwin

Type:

Enhancement

Description:

Currently we are using libp2p as the underlying p2p mechanism.

However, libp2p is still in the development stage, and it does not guarantee the success of the connections in the various network environment (ex: VPN).

We would like to know the connectivity under different network environment through this issue.

[chhsiao1981]

(same subnet => work)
(with public-ip => work)

[chhsiao1981]

The new update in libp2p:

libp2p/go-libp2p#490

[chhsiao1981]

nodes on linode can connect to nodes on digital ocean (both are with public ip)

[chhsiao1981]

Another possible p2p lib: https://github.com/anacrolix/torrent
(Torrent in go)

[chhsiao1981]

Another possible p2p lib: https://github.com/pions/webrtc
(webrtc in pure go)

[chhsiao1981]

libp2p/go-libp2p#188

[chhsiao1981]

based on

libp2p/go-libp2p#375
https://gist.github.com/upperwal/38cd0c98e4a6b34c061db0ff26def9b9#file-libp2p_chat_bootstrapping-md

It's possible that we can have nat working by following the example.

[chhsiao1981]

We will firstly try the following setup for the libp2p-relay:

https://github.com/libp2p/go-libp2p-examples/blob/master/relay/main.go

[chhsiao1981]

issue with pions/webrtc pions-to-pions example:

requiring specifying true ip/port to connect to the peer.
need to check further how to do pions-to-pions across nat～

https://github.com/pion/webrtc/tree/master/examples/pion-to-pion

[chhsiao1981]

https://github.com/libp2p/specs/tree/master/relay

[backkem]

issue with pions/webrtc pions-to-pions example:

requiring specifying true ip/port to connect to the peer.
need to check further how to do pions-to-pions across nat～

https://github.com/pion/webrtc/tree/master/examples/pion-to-pion

Quick note: WebRTC doesn't require a specific port. It requires you to exchange some data ( An offer and the corresponding answer) in order to set up a connection. It is not specified how to exchange this information. You can copy/paste it, send it over a central server, ... . In the case of the pion to pion example we send this information it over a direct http connection but this is not required. It just makes the example easy to run.

[chhsiao1981]

@backkem

Thank you so much for the explanation～
pion/webrtc is really awesome！

I am noob to webrtc,
but I would like to try to integrate pion/webrtc into this repo as an alternative option to libp2p～

[chhsiao1981]

After testing #257:

Given 1 relay-server,
It looks like it is with high probability that it takes some amount of time (possibly more than 3-mins) to init connection～
(node-1: nat behind mobile-Chung-Hua-Telecom, node-2: Digital-Ocean, relay-server: aws-singapore)

Would like to:

1. dig further about libp2p discovery mechanism.
2. follow Integrate pion/webrtc as another alternative p2p. #258

[poga]

We had done switching to WebRTC in #271.