nimbus-eth2/beacon_chain/eth2_network.nim

86 lines
2.5 KiB
Nim

const
useDEVP2P = not defined(withLibP2P)
import
options, chronos, version
const
clientId = "Nimbus beacon node v" & versionAsStr
when useDEVP2P:
import
eth/[rlp, p2p, keys], gossipsub_protocol
export
p2p, rlp, gossipsub_protocol
type
Eth2Node* = EthereumNode
BootstrapAddr* = ENode
template libp2pProtocol*(name, version: string) {.pragma.}
proc createEth2Node*(tcpPort, udpPort: Port): Future[EthereumNode] {.async.} =
let
keys = newKeyPair()
address = Address(ip: parseIpAddress("127.0.0.1"),
tcpPort: tcpPort,
udpPort: udpPort)
return newEthereumNode(keys, address, 0,
nil, clientId, minPeers = 1)
proc saveConnectionAddressFile*(node: Eth2Node, filename: string) =
writeFile(filename, $node.listeningAddress)
proc init*(T: type BootstrapAddr, str: string): T =
initENode(str)
else:
import
libp2p/daemon/daemonapi, json_serialization, chronicles,
libp2p_backend
export
libp2p_backend
type
BootstrapAddr* = PeerInfo
proc writeValue*(writer: var JsonWriter, value: PeerID) {.inline.} =
writer.writeValue value.pretty
proc readValue*(reader: var JsonReader, value: var PeerID) {.inline.} =
value = PeerID.init reader.readValue(string)
proc writeValue*(writer: var JsonWriter, value: MultiAddress) {.inline.} =
writer.writeValue $value
proc readValue*(reader: var JsonReader, value: var MultiAddress) {.inline.} =
value = MultiAddress.init reader.readValue(string)
proc init*(T: type BootstrapAddr, str: string): T =
Json.decode(str, PeerInfo)
proc createEth2Node*(tcpPort, udpPort: Port): Future[Eth2Node] {.async.} =
var node = new Eth2Node
await node.init()
return node
proc connectToNetwork*(node: Eth2Node, bootstrapNodes: seq[PeerInfo]) {.async.} =
# TODO: perhaps we should do these in parallel
for bootstrapNode in bootstrapNodes:
try:
await node.daemon.connect(bootstrapNode.peer, bootstrapNode.addresses)
await node.getPeer(bootstrapNode.peer).performProtocolHandshakes()
except PeerDisconnected:
error "Failed to connect to bootstrap node", node = bootstrapNode
proc saveConnectionAddressFile*(node: Eth2Node, filename: string) =
let id = waitFor node.daemon.identity()
Json.saveFile(filename, id, pretty = false)
proc loadConnectionAddressFile*(filename: string): PeerInfo =
Json.loadFile(filename, PeerInfo)