312 lines
11 KiB
Nim
312 lines
11 KiB
Nim
# Nimbus - Ethereum Wire Protocol
|
|
#
|
|
# Copyright (c) 2018-2024 Status Research & Development GmbH
|
|
# Licensed under either of
|
|
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
|
|
# http://www.apache.org/licenses/LICENSE-2.0)
|
|
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
|
|
# http://opensource.org/licenses/MIT)
|
|
# at your option. This file may not be copied, modified, or distributed
|
|
# except according to those terms.
|
|
|
|
## This module implements Ethereum Wire Protocol version 67, `eth/67`.
|
|
## Specification:
|
|
## `eth/68 <https://github.com/ethereum/devp2p/blob/master/caps/eth.md>`_
|
|
##
|
|
## Use NIM command line optipn `-d:p2pProtocolDebug` for dumping the
|
|
## generated driver code (just to have it stored somewhere lest one forgets.)
|
|
|
|
import
|
|
stint,
|
|
chronicles,
|
|
chronos,
|
|
eth/[common, p2p, p2p/private/p2p_types],
|
|
stew/byteutils,
|
|
./trace_config,
|
|
./eth/eth_types,
|
|
../../utils/utils
|
|
|
|
export
|
|
eth_types
|
|
|
|
logScope:
|
|
topics = "eth68"
|
|
|
|
const
|
|
ethVersion* = 68
|
|
prettyEthProtoName* = "[eth/" & $ethVersion & "]"
|
|
|
|
# Pickeled tracer texts
|
|
trEthRecvReceived* =
|
|
"<< " & prettyEthProtoName & " Received "
|
|
trEthRecvReceivedBlockHeaders* =
|
|
trEthRecvReceived & "BlockHeaders (0x04)"
|
|
trEthRecvReceivedBlockBodies* =
|
|
trEthRecvReceived & "BlockBodies (0x06)"
|
|
|
|
trEthRecvProtocolViolation* =
|
|
"<< " & prettyEthProtoName & " Protocol violation, "
|
|
trEthRecvError* =
|
|
"<< " & prettyEthProtoName & " Error "
|
|
trEthRecvTimeoutWaiting* =
|
|
"<< " & prettyEthProtoName & " Timeout waiting "
|
|
trEthRecvDiscarding* =
|
|
"<< " & prettyEthProtoName & " Discarding "
|
|
|
|
trEthSendSending* =
|
|
">> " & prettyEthProtoName & " Sending "
|
|
trEthSendSendingGetBlockHeaders* =
|
|
trEthSendSending & "GetBlockHeaders (0x03)"
|
|
trEthSendSendingGetBlockBodies* =
|
|
trEthSendSending & "GetBlockBodies (0x05)"
|
|
|
|
trEthSendReplying* =
|
|
">> " & prettyEthProtoName & " Replying "
|
|
|
|
trEthSendDelaying* =
|
|
">> " & prettyEthProtoName & " Delaying "
|
|
|
|
trEthRecvNewBlock* =
|
|
"<< " & prettyEthProtoName & " Received NewBlock"
|
|
trEthRecvNewBlockHashes* =
|
|
"<< " & prettyEthProtoName & " Received NewBlockHashes"
|
|
trEthSendNewBlock* =
|
|
">> " & prettyEthProtoName & " Sending NewBlock"
|
|
trEthSendNewBlockHashes* =
|
|
">> " & prettyEthProtoName & " Sending NewBlockHashes"
|
|
|
|
template handleHandlerError(x: untyped) =
|
|
if x.isErr:
|
|
raise newException(EthP2PError, x.error)
|
|
|
|
when trEthTraceGossipOk:
|
|
import std/[sequtils,strutils]
|
|
|
|
func toStr(w: openArray[int]): string =
|
|
func toStr(n: int): string =
|
|
if n == 0: "0"
|
|
else: n.toHex.strip(trailing=false,chars={'0'}).toLowerAscii
|
|
w.mapIt(it.toStr).join(":")
|
|
|
|
p2pProtocol eth68(version = ethVersion,
|
|
rlpxName = "eth",
|
|
peerState = EthPeerState,
|
|
networkState = EthWireBase,
|
|
useRequestIds = true):
|
|
|
|
onPeerConnected do (peer: Peer):
|
|
let
|
|
network = peer.network
|
|
ctx = peer.networkState
|
|
statusRes = ctx.getStatus()
|
|
|
|
handleHandlerError(statusRes)
|
|
let status = statusRes.get
|
|
|
|
trace trEthSendSending & "Status (0x00)", peer,
|
|
td = status.totalDifficulty,
|
|
bestHash = short(status.bestBlockHash),
|
|
networkId = network.networkId,
|
|
genesis = short(status.genesisHash),
|
|
forkHash = status.forkId.forkHash.toHex,
|
|
forkNext = status.forkId.forkNext
|
|
|
|
let m = await peer.status(ethVersion,
|
|
network.networkId,
|
|
status.totalDifficulty,
|
|
status.bestBlockHash,
|
|
status.genesisHash,
|
|
status.forkId,
|
|
timeout = chronos.seconds(10))
|
|
|
|
when trEthTraceHandshakesOk:
|
|
trace "Handshake: Local and remote networkId",
|
|
local=network.networkId, remote=m.networkId
|
|
trace "Handshake: Local and remote genesisHash",
|
|
local=short(status.genesisHash), remote=short(m.genesisHash)
|
|
trace "Handshake: Local and remote forkId",
|
|
local=(status.forkId.forkHash.toHex & "/" & $status.forkId.forkNext),
|
|
remote=(m.forkId.forkHash.toHex & "/" & $m.forkId.forkNext)
|
|
|
|
if m.networkId != network.networkId:
|
|
trace "Peer for a different network (networkId)", peer,
|
|
expectNetworkId=network.networkId, gotNetworkId=m.networkId
|
|
raise newException(
|
|
UselessPeerError, "Eth handshake for different network")
|
|
|
|
if m.genesisHash != status.genesisHash:
|
|
trace "Peer for a different network (genesisHash)", peer,
|
|
expectGenesis=short(status.genesisHash), gotGenesis=short(m.genesisHash)
|
|
raise newException(
|
|
UselessPeerError, "Eth handshake for different network")
|
|
|
|
trace "Peer matches our network", peer
|
|
peer.state.initialized = true
|
|
peer.state.bestDifficulty = m.totalDifficulty
|
|
peer.state.bestBlockHash = m.bestHash
|
|
|
|
handshake:
|
|
# User message 0x00: Status.
|
|
proc status(peer: Peer,
|
|
ethVersionArg: uint64,
|
|
networkId: NetworkId,
|
|
totalDifficulty: DifficultyInt,
|
|
bestHash: Hash32,
|
|
genesisHash: Hash32,
|
|
forkId: ChainForkId) =
|
|
trace trEthRecvReceived & "Status (0x00)", peer,
|
|
networkId, totalDifficulty, bestHash=short(bestHash), genesisHash=short(genesisHash),
|
|
forkHash=forkId.forkHash.toHex, forkNext=forkId.forkNext
|
|
|
|
# User message 0x01: NewBlockHashes.
|
|
proc newBlockHashes(peer: Peer, hashes: openArray[NewBlockHashesAnnounce]) =
|
|
when trEthTraceGossipOk:
|
|
trace trEthRecvReceived & "NewBlockHashes (0x01)", peer,
|
|
hashes=hashes.len
|
|
|
|
let ctx = peer.networkState()
|
|
let res = ctx.handleNewBlockHashes(peer, hashes)
|
|
handleHandlerError(res)
|
|
|
|
# User message 0x02: Transactions.
|
|
proc transactions(peer: Peer, transactions: openArray[Transaction]) =
|
|
when trEthTraceGossipOk:
|
|
trace trEthRecvReceived & "Transactions (0x02)", peer,
|
|
transactions=transactions.len
|
|
|
|
let ctx = peer.networkState()
|
|
let res = ctx.handleAnnouncedTxs(peer, transactions)
|
|
handleHandlerError(res)
|
|
|
|
requestResponse:
|
|
# User message 0x03: GetBlockHeaders.
|
|
proc getBlockHeaders(peer: Peer, request: EthBlocksRequest) =
|
|
when trEthTracePacketsOk:
|
|
trace trEthRecvReceived & "GetBlockHeaders (0x03)", peer,
|
|
count=request.maxResults
|
|
|
|
if request.maxResults > uint64(maxHeadersFetch):
|
|
debug "GetBlockHeaders (0x03) requested too many headers",
|
|
peer, requested=request.maxResults, max=maxHeadersFetch
|
|
await peer.disconnect(BreachOfProtocol)
|
|
return
|
|
|
|
let ctx = peer.networkState()
|
|
let headers = ctx.getBlockHeaders(request)
|
|
handleHandlerError(headers)
|
|
if headers.get.len > 0:
|
|
trace trEthSendReplying & "with BlockHeaders (0x04)", peer,
|
|
sent=headers.get.len, requested=request.maxResults
|
|
else:
|
|
trace trEthSendReplying & "EMPTY BlockHeaders (0x04)", peer,
|
|
sent=0, requested=request.maxResults
|
|
|
|
await response.send(headers.get)
|
|
|
|
# User message 0x04: BlockHeaders.
|
|
proc blockHeaders(p: Peer, headers: openArray[Header])
|
|
|
|
requestResponse:
|
|
# User message 0x05: GetBlockBodies.
|
|
proc getBlockBodies(peer: Peer, hashes: openArray[Hash32]) =
|
|
trace trEthRecvReceived & "GetBlockBodies (0x05)", peer,
|
|
hashes=hashes.len
|
|
if hashes.len > maxBodiesFetch:
|
|
debug "GetBlockBodies (0x05) requested too many bodies",
|
|
peer, requested=hashes.len, max=maxBodiesFetch
|
|
await peer.disconnect(BreachOfProtocol)
|
|
return
|
|
|
|
let ctx = peer.networkState()
|
|
let bodies = ctx.getBlockBodies(hashes)
|
|
handleHandlerError(bodies)
|
|
if bodies.get.len > 0:
|
|
trace trEthSendReplying & "with BlockBodies (0x06)", peer,
|
|
sent=bodies.get.len, requested=hashes.len
|
|
else:
|
|
trace trEthSendReplying & "EMPTY BlockBodies (0x06)", peer,
|
|
sent=0, requested=hashes.len
|
|
|
|
await response.send(bodies.get)
|
|
|
|
# User message 0x06: BlockBodies.
|
|
proc blockBodies(peer: Peer, blocks: openArray[BlockBody])
|
|
|
|
# User message 0x07: NewBlock.
|
|
proc newBlock(peer: Peer, blk: EthBlock, totalDifficulty: DifficultyInt) =
|
|
# (Note, needs to use `EthBlock` instead of its alias `NewBlockAnnounce`
|
|
# because either `p2pProtocol` or RLPx doesn't work with an alias.)
|
|
when trEthTraceGossipOk:
|
|
trace trEthRecvReceived & "NewBlock (0x07)", peer,
|
|
totalDifficulty,
|
|
blockNumber = blk.header.number,
|
|
blockDifficulty = blk.header.difficulty
|
|
|
|
let ctx = peer.networkState()
|
|
let res = ctx.handleNewBlock(peer, blk, totalDifficulty)
|
|
handleHandlerError(res)
|
|
|
|
# User message 0x08: NewPooledTransactionHashes.
|
|
proc newPooledTransactionHashes(
|
|
peer: Peer,
|
|
txTypes: seq[byte],
|
|
txSizes: openArray[uint64],
|
|
txHashes: openArray[Hash32]
|
|
) =
|
|
when trEthTraceGossipOk:
|
|
trace trEthRecvReceived & "NewPooledTransactionHashes (0x08)", peer,
|
|
txTypes=txTypes.toHex, txSizes=txSizes.toStr,
|
|
hashes=txHashes.len
|
|
|
|
let ctx = peer.networkState()
|
|
let res = ctx.handleAnnouncedTxsHashes(peer, txTypes, txSizes, txHashes)
|
|
handleHandlerError(res)
|
|
|
|
requestResponse:
|
|
# User message 0x09: GetPooledTransactions.
|
|
proc getPooledTransactions(peer: Peer, txHashes: openArray[Hash32]) =
|
|
trace trEthRecvReceived & "GetPooledTransactions (0x09)", peer,
|
|
hashes=txHashes.len
|
|
|
|
let ctx = peer.networkState()
|
|
let txs = ctx.getPooledTxs(txHashes)
|
|
handleHandlerError(txs)
|
|
if txs.get.len > 0:
|
|
trace trEthSendReplying & "with PooledTransactions (0x0a)", peer,
|
|
sent=txs.get.len, requested=txHashes.len
|
|
else:
|
|
trace trEthSendReplying & "EMPTY PooledTransactions (0x0a)", peer,
|
|
sent=0, requested=txHashes.len
|
|
|
|
await response.send(txs.get)
|
|
|
|
# User message 0x0a: PooledTransactions.
|
|
proc pooledTransactions(
|
|
peer: Peer, transactions: openArray[PooledTransaction])
|
|
|
|
# User message 0x0d: GetNodeData -- removed, was so 66ish
|
|
# User message 0x0e: NodeData -- removed, was so 66ish
|
|
|
|
nextId 0x0f
|
|
|
|
requestResponse:
|
|
# User message 0x0f: GetReceipts.
|
|
proc getReceipts(peer: Peer, hashes: openArray[Hash32]) =
|
|
trace trEthRecvReceived & "GetReceipts (0x0f)", peer,
|
|
hashes=hashes.len
|
|
|
|
let ctx = peer.networkState()
|
|
let rec = ctx.getReceipts(hashes)
|
|
handleHandlerError(rec)
|
|
if rec.get.len > 0:
|
|
trace trEthSendReplying & "with Receipts (0x10)", peer,
|
|
sent=rec.get.len, requested=hashes.len
|
|
else:
|
|
trace trEthSendReplying & "EMPTY Receipts (0x10)", peer,
|
|
sent=0, requested=hashes.len
|
|
|
|
await response.send(rec.get)
|
|
|
|
# User message 0x10: Receipts.
|
|
proc receipts(peer: Peer, receipts: openArray[seq[Receipt]])
|