nwaku/waku/v2/node/config.nim

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when (NimMajor, NimMinor) < (1, 4):
{.push raises: [Defect].}
else:
{.push raises: [].}
import
std/[options, sequtils],
stew/results,
stew/shims/net,
libp2p/multiaddress
import
../protocol/waku_enr
type NetConfig* = object
hostAddress*: MultiAddress
wsHostAddress*: Option[MultiAddress]
hostExtAddress*: Option[MultiAddress]
wsExtAddress*: Option[MultiAddress]
wssEnabled*: bool
extIp*: Option[ValidIpAddress]
extPort*: Option[Port]
dns4DomainName*: Option[string]
announcedAddresses*: seq[MultiAddress]
extMultiAddrs*: seq[MultiAddress]
enrMultiAddrs*: seq[MultiAddress]
enrIp*: Option[ValidIpAddress]
enrPort*: Option[Port]
discv5UdpPort*: Option[Port]
wakuFlags*: Option[CapabilitiesBitfield]
bindIp*: ValidIpAddress
bindPort*: Port
type NetConfigResult* = Result[NetConfig, string]
template ip4TcpEndPoint(address, port): MultiAddress =
MultiAddress.init(address, tcpProtocol, port)
template dns4Ma(dns4DomainName: string): MultiAddress =
MultiAddress.init("/dns4/" & dns4DomainName).tryGet()
template tcpPortMa(port: Port): MultiAddress =
MultiAddress.init("/tcp/" & $port).tryGet()
template dns4TcpEndPoint(dns4DomainName: string, port: Port): MultiAddress =
dns4Ma(dns4DomainName) & tcpPortMa(port)
template wsFlag(wssEnabled: bool): MultiAddress =
if wssEnabled: MultiAddress.init("/wss").tryGet()
else: MultiAddress.init("/ws").tryGet()
proc init*(T: type NetConfig,
bindIp: ValidIpAddress,
bindPort: Port,
extIp = none(ValidIpAddress),
extPort = none(Port),
extMultiAddrs = newSeq[MultiAddress](),
wsBindPort: Port = Port(8000),
wsEnabled: bool = false,
wssEnabled: bool = false,
dns4DomainName = none(string),
discv5UdpPort = none(Port),
wakuFlags = none(CapabilitiesBitfield)): NetConfigResult =
## Initialize and validate waku node network configuration
# Bind addresses
let hostAddress = ip4TcpEndPoint(bindIp, bindPort)
var wsHostAddress = none(MultiAddress)
if wsEnabled or wssEnabled:
try:
wsHostAddress = some(ip4TcpEndPoint(bindIp, wsbindPort) & wsFlag(wssEnabled))
except CatchableError:
return err(getCurrentExceptionMsg())
let enrIp = if extIp.isSome(): extIp else: some(bindIp)
let enrPort = if extPort.isSome(): extPort else: some(bindPort)
# Setup external addresses, if available
var hostExtAddress, wsExtAddress = none(MultiAddress)
if dns4DomainName.isSome():
# Use dns4 for externally announced addresses
try:
hostExtAddress = some(dns4TcpEndPoint(dns4DomainName.get(), extPort.get()))
except CatchableError:
return err(getCurrentExceptionMsg())
if wsHostAddress.isSome():
try:
wsExtAddress = some(dns4TcpEndPoint(dns4DomainName.get(), wsBindPort) & wsFlag(wssEnabled))
except CatchableError:
return err(getCurrentExceptionMsg())
else:
# No public domain name, use ext IP if available
if extIp.isSome() and extPort.isSome():
hostExtAddress = some(ip4TcpEndPoint(extIp.get(), extPort.get()))
if wsHostAddress.isSome():
try:
wsExtAddress = some(ip4TcpEndPoint(extIp.get(), wsBindPort) & wsFlag(wssEnabled))
except CatchableError:
return err(getCurrentExceptionMsg())
var announcedAddresses = newSeq[MultiAddress]()
if hostExtAddress.isSome():
announcedAddresses.add(hostExtAddress.get())
else:
announcedAddresses.add(hostAddress) # We always have at least a bind address for the host
# External multiaddrs that the operator may have configured
if extMultiAddrs.len > 0:
announcedAddresses.add(extMultiAddrs)
if wsExtAddress.isSome():
announcedAddresses.add(wsExtAddress.get())
elif wsHostAddress.isSome():
announcedAddresses.add(wsHostAddress.get())
let
# enrMultiaddrs are just addresses which cannot be represented in ENR, as described in
# https://rfc.vac.dev/spec/31/#many-connection-types
enrMultiaddrs = announcedAddresses.filterIt(it.hasProtocol("dns4") or
it.hasProtocol("dns6") or
it.hasProtocol("ws") or
it.hasProtocol("wss"))
ok(NetConfig(
hostAddress: hostAddress,
wsHostAddress: wsHostAddress,
hostExtAddress: hostExtAddress,
wsExtAddress: wsExtAddress,
extIp: extIp,
extPort: extPort,
wssEnabled: wssEnabled,
dns4DomainName: dns4DomainName,
announcedAddresses: announcedAddresses,
extMultiAddrs: extMultiAddrs,
enrMultiaddrs: enrMultiaddrs,
enrIp: enrIp,
enrPort: enrPort,
discv5UdpPort: discv5UdpPort,
bindIp: bindIp,
bindPort: bindPort,
wakuFlags: wakuFlags
))