We released ouroboros-network-0.17.1.{0,1} which is being integrated with cardano-node-9.2, see releases.
We continued working on tests of the new tx-submission application,
ouroboros-network#3311, ouroboros-network#4928.
The new typed-protocols API is under review, typed-protocols#52
We released a new version of io-classes & io-sim to Hackage:
Karl Knutsson (CF) produces graphs which show how peer sharing usage expands on mainnet.
Private relays in the last graph are relays which we are not certain that are registered on the chain.
We conducted an investigation whether the new proposed typed-protocols
version (see typed-protocols#52 introduces any performance regression. No
regression was found when running a cardano-node (v9.1.0 vs a modified
version using the new typed-protocols API) the benchmarking cluster. Also no
regression was observed when syncing mainnet. The graph below shows
accumulated size of block downloaded over time for both nodes:
The following draft PRs are openned:
cardano-node version using new typed-protocols APIFixed a bug in which cardano-cli ping exited with wrong exit code when a wrong network magic was supplied, see ouroboros-network#4865.
cardano-cli ping will also now report the remote IP address and port when querying the tip:
> cardano-cli ping -h backbone.mainnet.cardanofoundation.org -p3001 -t -j -q | jq
{
"tip": [
{
"addr": "2a01:2a8:a23d:16::17",
"blockNo": 10699400,
"hash": "f37649c4a6ae0c8b208da7c46d4e04312518969e612af0a8dbfdadcbd7180dd2",
"port": 3001,
"rtt": 0.013192945,
"slotNo": 131991843
},
{
"addr": "2a0e:dc0:3:b122::1",
"blockNo": 10699400,
"hash": "f37649c4a6ae0c8b208da7c46d4e04312518969e612af0a8dbfdadcbd7180dd2",
"port": 3001,
"rtt": 0.024089979,
"slotNo": 131991843
},
{
"addr": "2001:15e8:110:4aae::1",
"blockNo": 10699400,
"hash": "f37649c4a6ae0c8b208da7c46d4e04312518969e612af0a8dbfdadcbd7180dd2",
"port": 3001,
"rtt": 0.034663209,
"slotNo": 131991843
}
]
}
We continued writing tests for the new tx-submission application.
We started extending typed-protocols codec to have access to both raw bytes
and decoded transactions in the tx-submission mini-protocol. See
ouroboros-network#4934.
We held The Network Working Group (NWG) in the last sprint. Below, we share
recordings of this and earlier NWG meetings, which introduce basic notions of
ouroboros-network. These recordings should be accessible to a technical
audience.
We continued working on the new design of tx-submission. We progressed in writing
a new tx-submission server (inbound side of tx-submission protocol)
instrumented by decision logic. The next step is writing a simulation that
runs N-pairs of client-server communications in which the same decision logic governs all servers - emulating the behaviour of cardano-node once the new tx-submission is integrated. For more details, see
ouroboros-network#3311
All outstanding PRs related to Genesis have been reviewed and accepted. Soon they will be merged.
We presented ideas on how to run mithril functionalities with
cardano-node while taking into account the risks that such integration would impose on
the system. The technical description will be part of a CIP, which will then go to
the Technical Steering Committee (TSC) for an evaluation.
We found out and fixed a bug in the iproute parser of IPv4 addresses:
Karl Knutsson (CF) fixed a bug which prevented a node using bootstrap peers to sync using them, for a more detailed description see ouroboros-network#4899.
Earlier this year we fixed bugs in IOSimPOR which prevent us from using it in
ouroboros-network (io-sim#153, io-sim#159); since
ouroboros-network#4872 was merged we have a large number of tests that are
using IOSimPOR's schedule exploration. In the last sprint we fixed
some bugs discovered by IOSimPOR in ouroboros-network:
We continued working on new tx-submission logic: ouroboros-network#3311 as
well as on Genesis. The work on Genesis is split in a few PRs which are
currently in review process:
Karl Knutsson (CF) modified peer sharing behaviour to not share peers whith which connections failed, see ouroboros-network#4883 for more details.
We fixed inbound governor counters tracer, see ouroboros-network#4885.
We continued working on improving peer sharing. As part of this work light
peer sharing (e.g. including inbound peers to the known set of outbound
governor), was restructured. Now, sending more peers than what was requested by
the peer-sharing client is a protocol error, and the connection will be terminated;
This hasn't been a resource attack vector since we always limited the number of
peers taken by the outbound-governor and the number of peers has always been
limited by the size of the mux ingress queue reserved for peer-sharing
mini-protocol. These changes will be released in cardano-node-8.9.3. See
ouroboros-network#4868
We also merged the work on outbound governor counters, which initially started
as just an extension for peer-sharing counters but turned into a larger
refactorisation. We announced it in the previous report. These changes will
be included in 8.9.3. See ouroboros-network#4845,
ouroboros-network#4861.
Light peer sharing (inbound peers) refactorisation allowed us to refactor the
inbound governor loop: we restructured it so that the internal state is kept
pure (and thus not shared with other threads), while the public part is
computed incrementally (with good amortised costs and thus leading to good performance) and exposed to other
components (e.g. the outbound-governor), see ouroboros-network#4871 (which
is built on top of ouroboros-network#4868).
The PR [cardano-nod#5831] integrates ouroboros-network-0.15 with
cardano-node-8.9.x branch. All included PRs / issues in
ouroboros-network-0.15 are listed here.
We implemented the API needed by the consensus layer for Genesis; see
ouroboros-network#4815, ouroboros-network#4846.
We continued working on outbound governor changes to support Genesis:
Karl Knutsson ([CF]) found and fixed some problems related to big-ledger and public root peers. Here's an excerpt from the changelog file:
LedgerStateJudgements;We merged a refactorisation which synchronises churn with the outbound governor, see ouroboros-network#4617.
A few other minor improvements were merged:
nix, see ouroboros-network#4860;We added quickcheck-monoids package and also submitted an upstream patch to
QuickCheck to include a version of the standard All / Any monoids, which
are helpful when writing more complex properties. We will use
quickcheck-monoids until the upstream PR will be released. It will be
available from CHaP. See quickcheck#397.