Merge pull request bnb-chain#8 from krish-nr/krish/p2p_sync

feat: support snap sync for OP chains

eth/handler.go

@@ -168,8 +168,10 @@ func newHandler(config *handlerConfig) (*handler, error) {
 			log.Warn("Switch sync mode from full sync to snap sync")
 		}
 	} else {
-		if h.chain.CurrentBlock().Number.Uint64() > 0 {
+		blockNumber := h.chain.CurrentBlock().Number
+		if blockNumber.Uint64() > 0 && (!config.Chain.Config().IsOptimism() || blockNumber.Cmp(config.Chain.Config().BedrockBlock) != 0) {
 			// Print warning log if database is not empty to run snap sync.
+			// For OP chains, snap sync from bedrock block is allowed.
 			log.Warn("Switch sync mode from snap sync to full sync")
 		} else {
 			// If snap sync was requested and our database is empty, grant it

eth/protocols/snap/handler.go

@@ -469,7 +469,7 @@ func ServiceGetByteCodesQuery(chain *core.BlockChain, req *GetByteCodesPacket) [
 			// Peers should not request the empty code, but if they do, at
 			// least sent them back a correct response without db lookups
 			codes = append(codes, []byte{})
-		} else if blob, err := chain.ContractCodeWithPrefix(hash); err == nil {
+		} else if blob, err := chain.ContractCode(hash); err == nil {
 			codes = append(codes, blob)
 			bytes += uint64(len(blob))
 		}