If we can't decode the onion, because the onion got corrupted or we used
`sendonion` without specifying the `shared_secrets` used, the best we can do
is tell the caller instead.
This means that c-lightning can now internally decrypt an eventual error
message, and not force the caller to implement the decryption. The main
difficulty was that we now have a new state (channels and nodes not specified,
while shared_secrets are specified) which needed to be handled.
We are breaking with a couple of assumptions, namely that we have the
`path_secrets` to decode the error onion. If this happens we just want it to
error out.
We don't set the secret to compulsory (yet!) but put code in for the
future. Meanwhile, if there is a secret, check it is correct.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. Printed form is always "[<nodeid>-]<prefix>: <string>"
2. "jcon fd %i" becomes "jsonrpc #%i".
3. "jsonrpc" log is only used once, and is removed.
4. "database" log prefix is use for db accesses.
5. "lightningd(%i)" becomes simply "lightningd" without the pid.
6. The "lightningd_" prefix is stripped from subd log prefixes, and pid removed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-changed: Logging: formatting made uniform: [NODEID-]SUBSYSTEM: MESSAGE
Changelog-removed: `lightning_` prefixes removed from subdaemon names, including in listpeers `owner` field.
Reduce test_feerate_stress iterations, and simply don't run
test_pay_retry under VALGRIND with SLOW_MACHINE at all.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Whenever we have multi-connected nodes, out-of-order gossip is possible.
In particular, if a node_announcement is 1 second fresher than the
channel_announcement, a timestamp_filter might get one and not the
other.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
It's generally clearer to have simple hardcoded numbers with an
#if DEVELOPER around it, than apparent variables which aren't, really.
Interestingly, our pruning test was always kinda broken: we have to pass
two cycles, since l2 will refresh the channel once to avoid pruning.
Do the more obvious thing, and cut the network in half and check that
l1 and l3 time out.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Make update_local_channel use a timer if it's too soon to make another
update.
1. Implement cupdate_different() which compares two updates.
2. make update_local_channel() take a single arg for timer usage.
3. Set timestamp of non-disable update back 5 minutes, so we can
always generate a disable update if we need to.
4. Make update_local_channel() itself do the "unchanged update" suppression.
gossipd: clean up local channel updates.
5. Keep pointer to the current timer so we override any old updates with
a new one, to avoid a race.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We're about to change the API, so this makes the tests still work
across the transition (and, as a bonus, tests our backwards compat
shim).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Remove gratuitous prints, add explanations of what's going on,
and demonstrate that we can add a final trimmed HTLC but not
a non-trimmed one.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Subtracting both arbitrarily reduces our capacity, even for ourselves
since the routing logic uses this maximum.
I also changed 'advertise' to 'advertize', since we use american
spelling.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Turns out we needed more comprehensive testing; we ended up with three
separate tests. To avoid changing test_channel_drainage as we fix
spendable_msat, I substituted raw numbers there.
The first is a variation of the existing tests, testing we can't
exceed spendable_msat, and we can pay it, both ways.
The second is with a larger amount, which triggers a different problem.
The final is with a giant channel, which tests our 2^32-1 msat cap.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is where payment tests should go. Also mark it xfail for the moment,
and remove developer-only tag (propagating gossip is only 60 seconds, which
is OK).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Broken by 909913c265, but since Travis
skips this test ("temporarily", according to the commit msg in January!)
it wasn't caught.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Here I add the test for this 5 local_failed case in this commit.
There 5 cases for FORWARD_LOCAL_FAILED status:
1. When Msater resolves the reply about the next peer infor(sent by Gossipd), and need handle unknown next peer failure in channel_resolve_reply();
2. When Master handle the forward process with the htlc_in and the id of next hop, it tries to drive a new htlc_out but fails in forward_htlc();
3. When we send htlc_out, Master asks Channeld to add a new htlc into the outgoing channel but Channeld fails. Master need handle and store this failure in rcvd_htlc_reply();
4. When Channeld receives a new revoke message, if the state of corresponding htlc is RCVD_ADD_ACK_REVOCATION, Master will tries to resolve onionpacket and handle the failure before resolving the next hop in peer_got_revoke();
5. When Onchaind finds the htlc time out or missing htlc, Master need handle these failure as FORWARD_LOCAL_FAILED in if it's forward payment case.
We generated blocks to announce the channel, but it can also expire
the HTLC if the timing is wrong. We don't need to anyway, since we
fixed the FIXME; we store local unannounced channels for restoration
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We're going to make it async, so start by moving the core code into
invoice.c and having that directly call fail/success functions for the
htlc.
We add an extra check in fulfill_htlc() that the HTLC state is correct:
that can't happen now, but may once we're async.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This is currently done higher up, in handle_channel_update(), but
that's one reason why handle_channel_update() has to do a channel
lookup. Moving the check down means handle_channel_update() can do a
minimal "get node id for this channel" so it can check the signature.
This helps, because the chan lookup semantics are changing in the next
few patches.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
gossipd in l1 might not have registered l2 reconnecting, thus considering
the channel local-disabled.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
