mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-05-24 08:49:29 +00:00
9f2575efeb
Minimal txtracker that records which peer delivered each transaction and credits peers when their transactions appear on chain. Provides the PeerInclusionStats needed by the dropper's protection logic. Design: - NotifyReceived(peer, txs): records deliverer per tx hash (called from handler_eth.go when tx bodies arrive via P2P) - Subscribes to ChainHeadEvent, fetches block txs, credits the delivering peer for each included tx - Per-peer EMA of recent inclusions (alpha=0.05), updated every block - LRU eviction at 262K entries to bound memory - Mutex-based (not channel-based) for simplicity — the hot path (NotifyReceived) is a fast map insert Wired into the dropper via an adapter callback in backend.go that converts txtracker.PeerStats to the dropper's PeerInclusionStats.
123 lines
4.2 KiB
Go
123 lines
4.2 KiB
Go
// Copyright 2020 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package eth
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/eth/protocols/eth"
|
|
"github.com/ethereum/go-ethereum/p2p/enode"
|
|
)
|
|
|
|
// ethHandler implements the eth.Backend interface to handle the various network
|
|
// packets that are sent as replies or broadcasts.
|
|
type ethHandler handler
|
|
|
|
func (h *ethHandler) Chain() *core.BlockChain { return h.chain }
|
|
func (h *ethHandler) TxPool() eth.TxPool { return h.txpool }
|
|
|
|
// RunPeer is invoked when a peer joins on the `eth` protocol.
|
|
func (h *ethHandler) RunPeer(peer *eth.Peer, hand eth.Handler) error {
|
|
return (*handler)(h).runEthPeer(peer, hand)
|
|
}
|
|
|
|
// PeerInfo retrieves all known `eth` information about a peer.
|
|
func (h *ethHandler) PeerInfo(id enode.ID) interface{} {
|
|
if p := h.peers.peer(id.String()); p != nil {
|
|
return p.info()
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// AcceptTxs retrieves whether transaction processing is enabled on the node
|
|
// or if inbound transactions should simply be dropped.
|
|
func (h *ethHandler) AcceptTxs() bool {
|
|
return h.synced.Load()
|
|
}
|
|
|
|
// Handle is invoked from a peer's message handler when it receives a new remote
|
|
// message that the handler couldn't consume and serve itself.
|
|
func (h *ethHandler) Handle(peer *eth.Peer, packet eth.Packet) error {
|
|
// Consume any broadcasts and announces, forwarding the rest to the downloader
|
|
switch packet := packet.(type) {
|
|
case *eth.NewPooledTransactionHashesPacket:
|
|
return h.txFetcher.Notify(peer.ID(), packet.Types, packet.Sizes, packet.Hashes)
|
|
|
|
case *eth.TransactionsPacket:
|
|
txs, err := packet.Items()
|
|
if err != nil {
|
|
return fmt.Errorf("Transactions: %v", err)
|
|
}
|
|
h.txTracker.NotifyReceived(peer.ID(), txs)
|
|
if err := handleTransactions(peer, txs, true); err != nil {
|
|
return fmt.Errorf("Transactions: %v", err)
|
|
}
|
|
return h.txFetcher.Enqueue(peer.ID(), txs, false)
|
|
|
|
case *eth.PooledTransactionsPacket:
|
|
txs, err := packet.List.Items()
|
|
if err != nil {
|
|
return fmt.Errorf("PooledTransactions: %v", err)
|
|
}
|
|
h.txTracker.NotifyReceived(peer.ID(), txs)
|
|
if err := handleTransactions(peer, txs, false); err != nil {
|
|
return fmt.Errorf("PooledTransactions: %v", err)
|
|
}
|
|
return h.txFetcher.Enqueue(peer.ID(), txs, true)
|
|
|
|
default:
|
|
return fmt.Errorf("unexpected eth packet type: %T", packet)
|
|
}
|
|
}
|
|
|
|
// handleTransactions marks all given transactions as known to the peer
|
|
// and performs basic validations.
|
|
func handleTransactions(peer *eth.Peer, list []*types.Transaction, directBroadcast bool) error {
|
|
seen := make(map[common.Hash]struct{})
|
|
for _, tx := range list {
|
|
if tx.Type() == types.BlobTxType {
|
|
if directBroadcast {
|
|
return errors.New("disallowed broadcast blob transaction")
|
|
} else {
|
|
// If we receive any blob transactions missing sidecars, or with
|
|
// sidecars that don't correspond to the versioned hashes reported
|
|
// in the header, disconnect from the sending peer.
|
|
if tx.BlobTxSidecar() == nil {
|
|
return errors.New("received sidecar-less blob transaction")
|
|
}
|
|
if err := tx.BlobTxSidecar().ValidateBlobCommitmentHashes(tx.BlobHashes()); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check for duplicates.
|
|
hash := tx.Hash()
|
|
if _, exists := seen[hash]; exists {
|
|
return fmt.Errorf("multiple copies of the same hash %v", hash)
|
|
}
|
|
seen[hash] = struct{}{}
|
|
|
|
// Mark as known.
|
|
peer.MarkTransaction(hash)
|
|
}
|
|
return nil
|
|
}
|