On Wed, Aug 06, 2014 at 11:09:05AM +0200, Steffen Vogel wrote: > How do I can get the current state of UDP data-connections between my > firewall'd nodes? > > - 'dump edges' give me all connections between all nodes of the VPN. > The meta-protocol has a command called ADD_EDGE which is used to > inform other nodes about existing UDP data-connections. > This leads to the conclusion that 'dump edges' is used to show UDP > data-connections. > But as far as I can tell from my tests, these are only the TCP > meta-connections.
The ADD_EDGE messages are only sent for meta-connections, not for direct
UDP connections. The state of UDP connections is not communicated
amongst nodes. You can find out if the local node has a UDP connection
with another node (say, "foo") by using the command:
tinc info foo
This should give some information about node foo. There is one line
starting with "Reachability:" that will tell you about how tinc will
send packets to that node. It can either be:
- unreachable: the node cannot be reached in any way currently.
- unknown: the node is reachable but the local node has not (yet) tried
to communicate with it directly.
- indirectly via ...: the node cannot be reached directly, packets will
be forwarded by an intermediate node.
- directly with UDP: packets will be sent directly using UDP.
- directly with TCP: the local node has a meta connection with foo, but
UDP doesn't work, so it will send the packets via the TCP connection.
--
Met vriendelijke groet / with kind regards,
Guus Sliepen <[email protected]>
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