Alexandru Vasile
f2f4b154d7
This PR extends the Initialized event of the chainHead_follow subscription. Now, the event provides multiple finalized block hashes. This information allows clients that are disconnected, and that want to reconnect, to not lose information about the state of the chain. At the moment, the spec encourages servers to provide at least 1 minute of finalized blocks (~10 blocks). The users are responsible for unpinning these blocks at a later time. This PR tries to report at least 1 finalized block and at most 16 blocks, if they are available. Closes: https://github.com/paritytech/polkadot-sdk/issues/3432 cc @paritytech/subxt-team --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>
Substrate
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