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Network Team Update

· 2 min read
Marcin Szamotulski

Overview of sprint 77​

Initiator only mode for local roots​

We implemented the initiator-only mode for local roots peers described in ouroboros-network#5020. This feature will be available in cardano-node-10.3 (cardano-node#6055).

One will be able to specify diffusionMode (either InitiatorOnly or IntiatorAndRespoinder, the latter is the default) for all local roots in a given local roots group, e.g.

{ "localRoots":
    [ { "accessPoints":
          [ { "address": "10.0.0.1"
            , "port": 3001
            }
          ]
      , "advertise": false
      , "diffusionMode": "InitiatorOnly"
      , "warmValency": 1
      , "hotValency": 1
      }
    , { "accessPoints":
          [ { "address": "10.0.0.2"
            , "port": 3001
            }
          ]
      , "advertise": true
      , "diffusionMode": "InititiatorAndResponder"
      , "warmValency": 1
      , "hotValency": 1
      }
    ]
, "publicRoots": []
, "useLedgerAfterSlot": -1
}

As part of ouroboros-network#5020 we had to change how connections are identified in the simulated testnet environment. We exposed ConnStateIdSupply through P2P interfaces, which allows us to use a global ConnStateIdSupply for all nodes in the simulation. This way, ConnStateId is unique for each connection in the simulation. See ouroboros-network#5026.

Support systems with multiple IP addresses​

We merged ouroboros-network#5017 which allows to run cardano-node on systems with multiple network interfaces or a single interface with multiple IP addresses.

Reusable diffusion​

We were working on early integration of reusable diffusion work stream with ouroboros-consensus & cardano-node. Reusable diffusion will allow us to support both cardano-node and mithril-node in the future. We are pleased to say that we are running a cardano-node that uses refactored diffusion. See:

Tx-Submission Logic​

We had a discussion with the consensus team (Karl Knutsson CF, Nick Frisby Tweag) on network requirements for tx-mempool. See:

SRV record support​

We continued working on the SRV support, see:

Technical Debt​

We renamed some of the test modules to be more consistent across various network components, see ouroboros-network#5028.