eclair-mobile: Tor (Orbot) support

[kykeon]

Somewhat similar to #146, although Orbot was not explicitly mentioned there.

It would be a great plus for user privacy to allow the eclair lightning daemon and the SPV connections to be made over tor.

On the SPV side this affords the client greater protection against profiling, at least preventing the remote server from learning the users' IP -- and also enables the user to connect to their own electrum .onion (not an uncommon configuration for obvious privacy reasons)

On the Lightning side, this allows users to open channels to lightning nodes that only have .onion addresses, not a very large number but not a very small number either according to 1ml.com -- and of course, it allows the user to connect to their own .onion-only node, same as electrum.

It is stated in many of the Lightning Network documents that eventually most clients should be connecting over Tor for greater privacy. Seeing that eclair apparently has had Tor support since February, would it be possible to add Tor support to eclair-mobile ?

[dpad85]

That's certainly something we want to be fully supported.

I know from Gitter that a few users have tried to use Orbot with Eclair mobile, and had some success. I have not tested it myself however.

[sstone]

TYou can already use eclair-mobile with Orbot in VPN mode, so LN nodes and Electrum servers you connect to will not learn your IP address. In this case there is nothing to configure on eclair-mobile.

What you cannot do yet is configure eclair-mobile to use the socks5 proxy that Orbot provides to connect to LN/Electrum servers (including .onion servers), but this should be possible very soon.

[elvece]

Any updates on being able to connect .onion LN/Electrum servers to eclair-mobile? Is there a feature branch available to track?