No response when dialing to Mailbox via gPRC

[studioTeaTwo]

There is no error or cancellation at calling grpc.DialContext below, it is just put on hold.
The mailbox is mailbox.terminal.lightning.today:443
https://github.com/lightninglabs/aperture/blob/master/lnc/lnc.go#L284-L286

By the way, this issue may be due to be re-use passphrase from multiple containers under development, because it worked generating new phrase per container. However, I don't know because I haven't received a response and seen any documentation prohibiting passphrase reuse.

[positiveblue]

Hi @studioTeaTwo I think you are right that it holds forever and the reason is that after a connection has been stablished using a passphrase a "secret" key is created and the communication with the mailbox-node uses that key. Which means that passphrase cannot be reused. Let's fix this in two different PRs:

• lnc: Add a timeout when creating the grpc client with the mailbox #127 adding a timeout so we fail if we are not able to connect to the mailbox instead of hanging (even if it does not tell you the reason)
• config: make sample-conf.yaml less error prone #108 explaining that you cannot reuse passphrase in the config.