This commit adds a test case to check the no deadline sweeping behavior.
The sweeper is updated to make sure it can handle the case for neutrino
backend.
We don't support receiving blinded in this PR - just intercept and
settle instead. The HTLC's arrival on the interceptor indicates that
it was successfully forwarded on a blinded hop.
In the tower session itest, we make sure to mine blocks on session count
assertion failure. This required because the session count is expected
to change only when 2 things both happen: 1) a closable session is
queued and 2) a new block notification comes through _after_ the session
has been queued. Only then will it be deleted. So we need to do this to
prevent the case where all the block notifications are consumed _before_
the session is queued for deletion. This flake tended to happen in the
windows itest.
With this commit we create a new function that returns system wide
unique ports by using a single file to keep track of previously used
ports. We'll want to use this everywhere whenever we need to listen on a
new, random port during unit or integration tests.
Because we now have a unique source, we don't need to apply the port
offset that was used for the different tranches of parallel running
integration tests before.
In this commit, we start persisting shutdown info when we send the
Shutdown message. When starting up a link, we also first check if we
have previously persisted Shutdown info and if we have, we start the
link in shutdown mode meaning that it will not accept any new outgoing
HTLC additions and it will queue the shutdown message after any pending
CommitSig has been sent.
This commit adds an itest to demonstrate that the following bug exists:
If channel Shutdown is initiated but then a re-connect is done before
the shutdown is complete, then the initiating node currently does not
properly resend the Shutdown message as required by the spec. This will
be fixed in an upcoming commit.
