Support for tunneling between two instances

elupus commented 5 years ago

Think you could look at tunneling between two instances?

PS. Why the need for raw sockets? Is it spoofing source ip?

alsmith commented 5 years ago

In theory it ought to work, e.g. if you have net1 - A - net2 - B - net3 and run the relay on 'A' and 'B' then devices on net1 ought to be able to see devices on net3.

But sending packets over a longer distance where you're not necessarily in control of the routers in between isn't something that I've considered up to now. Do feel free to submit a patch, however!

raw sockets are because we muck around with the ethernet macs.

elupus commented 5 years ago

My case would be vpn, in which case you are in control.

It could be quite neat, and generic. Ie just run two instances on same host for current use case. Each instance listening to one interface.

I'll see if I look at it.

Den lör 16 feb. 2019 10:37 skrev Al Smith notifications@github.com:

In theory it ought to work, e.g. if you have net1 - A - net2 - B - net3 and run the relay on 'A' and 'B' then devices on net1 ought to be able to see devices on net3.

But sending packets over a longer distance where you're not necessarily in control of the routers in between isn't something that I've considered up to now. Do feel free to submit a patch, however!

raw sockets are because we muck around with the ethernet macs.

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alsmith commented 5 years ago

It actually works as-is over openvpn... for example I can run the Sonos app on my mac, connect via tunnelblick and operate the speakers at home using the relay. You'd just have to add 'tun0' to the list of interfaces that it listens on, eg

multicast-relay.py --interfaces eth0 eth1 tun0

elupus commented 5 years ago

I have a router to router VPN. With routers not able to run python. Sophos and pfsense. So can't get it to handle things. Need to be outside of those.

Den lör 16 feb. 2019 11:28 skrev Al Smith notifications@github.com:

It actually works as-is over openvpn... for example I can run the Sonos app on my mac, connect via tunnelblick and operate the speakers at home using the relay. You'd just have to add 'tun0' to the list of interfaces that it listens on, eg

multicast-relay.py --interfaces eth0 eth1 tun0

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elupus commented 5 years ago

Just for reference. I actually did start on this 3 years ago https://github.com/elupus/ssdpgateway had forgotten I put it on github :)

Though now that I look at it I didn't get so far.

agillis commented 4 years ago

I would be interested in this as well. The is why we need this feature. Imaging two subnets on the same router 10.0.1.x and 10.0.2.x you can not replace or modify the router but you want Sonos on both networks. You put a small computer on each network running the bridge and it bridges the traffic over to the other network. I would pay you to develop this feature if you are interested.