With coming changes, this will segfault if we access it when param
code is trying to get usage from functions.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Travis randomly picked up an error in test_feerate_stress:
**BROKEN** 0266e4598d1d3c415f572a8488830b60f7e744ed9235eb0b1ba93283b315c03518-channeld-chan#1: Cannot add htlc #0 10000msat to LOCAL (version a2541b9-modded)
This is because it hit an unlikely corner case involving applying multiple HTLCs
(similar to the previous c96cee9b8d).
In this case, the test sends a 500,000,000 "balancing" setup payment L1->L2.
It waits for L2 to get the preimage (which is the when pay() helper returns),
but crucially, it starts spamming with HTLCs before that HTLC is completely
removed.
From L2's point of view, the setup HTLC is in state RCVD_REMOVE_REVOCATION;
gone from L1's commitment tx, but still waiting for the commitment_signed
from L1 to remove it from L2's.
Note that each side keeps a local and remove view of both sides' current
balances: at this point, L2's view is REMOTE: "500,000,000 to L1, 499,900,000
to L2", LOCAL: "500,000,000 to L1, 0 to L2".
L2 sends a 10,000 msat HTLC to L1: legal, since L1 will allow it,
then the commitment_signed. L1 sends the revoke-and-ack for this,
*then* belatedly follows with the commitment_signed which both completes the
removal of the setup HTLC and adds the new one.
But L2 processes the HTLCs in hashtable (i.e. random) order: so if it
tries to apply its own HTLC first, it freaks out because it doesn't have
funds in its local view.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-Fixed: Unlikely corner case is simultanous HTLCs near balance limits fixed.
This function ensures we have all the infos we need to continue if the
htlc_accepted hook tells us to. It also enforces well-formedness of the TLV
payload if we have a TLV payload.
Suggested-by: List Neigut <@niftynei>
Signed-off-by: Christian Decker <@cdecker>
We have consolidated the two functions into a single `route_step_decode`
function, and made it static since we call it in the `process_onionpacket`
function. We remove the two exposed functions since they're no longer useful.
We wire in the code-generated function, which removes the upfront validation
and add the validation back after the `htlc_accepted` hook returns. If a
plugin wanted to handle the onion in a special way it'll not have told us to
just continue.
Since the parser itself just parses and doesn't include validation anymore we
need to put that functionality somewhere. The validation consists of enforcing
that the types are in monotonically increasing order without duplicates and
that for the even types we know how to handle it.
We were weaving in and out of generic code through `fromwire_tlvs` with custom
parameters defining the types in that namespace. This hard-wires the parser
with the namespace's types. Slowly trying to deprecate `fromwire_tlvs` in
favor of this typesafe variant.
Postgresql does not guarantee insertion order when querying, so we need to
actually go and look for the correct transaction.
Signed-off-by: Christian Decker <decker.christian@gmail.com>
Rounds out the application of `upfront_shutdown_script`, allowing
an accepting node to specify a close_to address.
Prior to this, only the opening node could specify one.
Changelog-Added: Plugins: Allow the 'accepter' to specify an upfront_shutdown_script for a channel via a `close_to` field in the openchannel hook result
This leads to all sorts of problems; in particular it's incredibly
slow (days, weeks!) if bitcoind is a long way back. This also changes
the behaviour of a rescan argument referring to a future block: we will
also refuse to start in that case, which I think is the correct behavior.
We already ignore bitcoind if it goes backwards while we're running.
Also cover a false positive memleak.
Changelog-Fixed: If bitcoind goes backwards (e.g. reindex) refuse to start (unless forced with --rescan).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We updated the protocol spec tests to verify a sig from a hash
and a private key; this updates mkcommit + mkgossip utilities
to print out the procotol compatible SIG() notation for all signatures.
--verbose will print a computed signature and more data as well.
Also adds --verbose flag to mkgossip.
Changelog-None
Requesting them is done by setting BUILD=<target_arch>
Otherwise autotools (used by external dependencies like
libsodium) is not happy with setting cross-compilation
variables and may possibly lead to unexpected results.
So far we've only handled legacy payloads, which meant we could drop the realm
byte since it was always 0x00. Once we start handling TLV payloads the first
byte, i.e., the former realm byte, is important since it gives us the length
of the payload. This is a breaking change, however I don't think there's
anyone using the `raw_payload` as of yet.
Changelog-Changed: JSON-RPC: the `raw_payload` now includes the first byte, i.e., the realm byte, of the payload as well. This allows correct decoding of a TLV payload in the plugins.
We've been sending them errors for invalid replies; instead, this works
around it.
Changelog-Added: Workaround LND's reply_channel_range issues instead of sending error.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Particularly important when talking with modern lnd, which
will hang up on you if you don't offer feature bit 1!
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Spaces just make life a little harder for everyone.
(Plus, fix documentation: it's 'jsonrpc' not 'json' subsystem).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
As suggested by @cdecker, but also did a bit of minor reformatting.
I don't like the excessive indenting in our man pages though,
but that's a separate problem.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
We can definitely get a pong from l1 (should test be slow enough):
it's l3 we are concerned about.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
The tal overhead of 5 pointers, the linked list node is 2; and we also
tal'd the string. That's 96 bytes per entry.
Use a simple array instead, though it means more work on deletion
since each log_entry is no longer a tal object.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
1. Don't prune the last 10%.
2. Be more aggressive on pruning IO and DEBUG.
3. Account for skipped entries correctly across multiple prunes.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This simplifies our tests, too, since we don't need a magic option to
enable io logging in subdaemons.
Note that test_bad_onion still takes too long, due to a separate minor
bug, so that's marked and left dev-only for now.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This allows finegrained logging control of particular subdaemons or
subsystems.
To do this, we defer setting the logging levels for each log object
until after early argument parsing (since e.g. "bitcoind" log object
is created early).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Changelog-changed: Options: log-level can now specify different levels for different subsystems.
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.
We had a separate logbook for each peer, and copy log entries above
the printable log level into the master logbook. This didn't always
work well, since we didn't dump it on crash for example.
Keep a single global logbook instead, and remove this infrastructure.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Simply better encapsulation. We still need to expose log_entry, since the
notification hook uses it though.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Rusty Russell
Christian Decker
lisa neigut
Ján Sáreník
Michael Schmoock