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les, light: improve txstatus retrieval (#22349)

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Transaction unindexing will be enabled by default as of 1.10, which causes tx status retrieval will be broken without this PR. 

This PR introduces a retry mechanism in TxStatus retrieval.
This commit is contained in:
gary rong
2021-02-25 21:24:04 +08:00
committed by GitHub
parent 378e961d85
commit 7a3c890009
14 changed files with 779 additions and 245 deletions
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12
les/peer.go
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@ -341,7 +341,7 @@ type serverPeer struct {
onlyAnnounce bool // The flag whether the server sends announcement only.
chainSince, chainRecent uint64 // The range of chain server peer can serve.
stateSince, stateRecent uint64 // The range of state server peer can serve.
serveTxLookup bool // The server peer can serve tx lookups.
txHistory uint64 // The length of available tx history, 0 means all, 1 means disabled
// Advertised checkpoint fields
checkpointNumber uint64 // The block height which the checkpoint is registered.
@ -634,13 +634,13 @@ func (p *serverPeer) Handshake(genesis common.Hash, forkid forkid.ID, forkFilter
if err := recv.get("recentTxLookup", &recentTx); err != nil {
return err
}
// Note: in the current version we only consider the tx index service useful
// if it is unlimited. This can be made configurable in the future.
p.serveTxLookup = recentTx == txIndexUnlimited
p.txHistory = uint64(recentTx)
} else {
p.serveTxLookup = true
// The weak assumption is held here that legacy les server(les2,3)
// has unlimited transaction history. The les serving in these legacy
// versions is disabled if the transaction is unindexed.
p.txHistory = txIndexUnlimited
}
if p.onlyAnnounce && !p.trusted {
return errResp(ErrUselessPeer, "peer cannot serve requests")
}