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Peer progress consistency check #446

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Peer progress consistency check #446

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1cf7641
progress consistency check
rus-alex Apr 11, 2023
90c5d9b
empty genesis atropos hash
rus-alex Apr 14, 2023
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7 changes: 7 additions & 0 deletions gossip/eth_state_adapter.go
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
package gossip

import (
"github.com/Fantom-foundation/lachesis-base/inter/idx"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/state/snapshot"
Expand All @@ -19,6 +20,12 @@ func newEthBlockChain(s *Store) (*ethBlockChain, error) {
return bc, nil
}

// GenesisBlock returns starting block index.
// Panics if there is no genesis info.
func (bc *ethBlockChain) GenesisBlock() idx.Block {
return *bc.store.GetGenesisBlockIndex()
}

// StateCache returns the caching database underpinning the blockchain instance.
func (bc *ethBlockChain) StateCache() state.Database {
return bc.store.LastKvdbEvmSnapshot().EvmState
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3 changes: 3 additions & 0 deletions gossip/handler.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1013,6 +1013,9 @@ func (h *handler) handleMsg(p *peer) error {
if err := msg.Decode(&progress); err != nil {
return errResp(ErrDecode, "%v: %v", msg, err)
}
if progress.LastBlockIdx > h.chain.GenesisBlock() && progress.Epoch != progress.LastBlockAtropos.Epoch() {
return errResp(ErrNoStatusMsg, "epoch %d does not match atropos %s", progress.Epoch, progress.LastBlockAtropos.String())
}
p.SetProgress(progress)

case msg.Code == EvmTxsMsg:
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