Fabiana Cecin ce918b0819
chore: replace Option with Opt (#4035)
* change all usage of std.options.Option[T] to results.Opt[T]
* fix broken apps and examples (to validate refactor)
* removed all std/options code added for libp2p v2 migration
* add broker Opt codec to persistency/backend_comm.nim
* add a readValue overload for Opt[T] in tools/confutils/cli_args.nim
* keep Option where required (Presto, confutils' config_file.nim)
* Change generateRlnProof error handling
* Fix imports
2026-07-16 14:02:17 -03:00

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# Waku Switch utils.
{.push raises: [].}
import
results,
chronos,
chronicles,
eth/keys,
libp2p/crypto/crypto,
libp2p/protocols/pubsub/gossipsub,
libp2p/protocols/rendezvous,
libp2p/protocols/connectivity/relay/relay,
libp2p/nameresolving/nameresolver,
libp2p/builders,
libp2p/switch,
libp2p/transports/[transport, tcptransport, wstransport]
# override nim-libp2p default value (which is also 1)
const MaxConnectionsPerPeer* = 1
const MaxConnections* = 50
proc withWsTransport*(b: SwitchBuilder): SwitchBuilder =
b.withTransport(
proc(config: TransportConfig): Transport =
WsTransport.new(config.upgr, rng = config.rng)
)
proc getSecureKey(path: string): TLSPrivateKey {.raises: [Defect, IOError].} =
trace "Key path is.", path = path
let stringkey: string = readFile(path)
try:
let key = TLSPrivateKey.init(stringkey)
return key
except TLSStreamProtocolError as exc:
info "exception raised from getSecureKey", err = exc.msg
proc getSecureCert(path: string): TLSCertificate {.raises: [Defect, IOError].} =
trace "Certificate path is.", path = path
let stringCert: string = readFile(path)
try:
let cert = TLSCertificate.init(stringCert)
return cert
except TLSStreamProtocolError as exc:
info "exception raised from getSecureCert", err = exc.msg
proc withWssTransport*(
b: SwitchBuilder, secureKeyPath: string, secureCertPath: string
): SwitchBuilder {.raises: [Defect, IOError].} =
let key: TLSPrivateKey = getSecureKey(secureKeyPath)
let cert: TLSCertificate = getSecureCert(secureCertPath)
b.withWsTransport(
tlsPrivateKey = key,
tlsCertificate = cert,
{TLSFlags.NoVerifyHost, TLSFlags.NoVerifyServerName}, # THIS IS INSECURE, NO?
)
proc newWakuSwitch*(
privKey = Opt.none(crypto.PrivateKey),
address = MultiAddress.init("/ip4/127.0.0.1/tcp/0").tryGet(),
wsAddress = Opt.none(MultiAddress),
quicAddress = Opt.none(MultiAddress),
secureManagers: openarray[SecureProtocol] = [SecureProtocol.Noise],
transportFlags: set[ServerFlags] = {},
rng: crypto.Rng,
inTimeout: Duration = 5.minutes,
outTimeout: Duration = 5.minutes,
maxConnections = MaxConnections,
maxIn = -1,
maxOut = -1,
maxConnsPerPeer = MaxConnectionsPerPeer,
nameResolver: NameResolver = nil,
sendSignedPeerRecord = false,
wssEnabled: bool = false,
secureKeyPath: string = "",
secureCertPath: string = "",
agentString = Opt.none(string), # defaults to nim-libp2p version
peerStoreCapacity = Opt.none(int), # defaults to 1.25 maxConnections
rendezvous: RendezVous = nil,
circuitRelay: Relay,
): Switch {.raises: [Defect, IOError, LPError].} =
var b = SwitchBuilder
.new()
.withRng(rng)
.withMaxConnsPerPeer(maxConnsPerPeer)
.withYamux()
.withMplex(inTimeout, outTimeout)
.withNoise()
.withNameResolver(nameResolver)
.withSignedPeerRecord(sendSignedPeerRecord)
.withCircuitRelay(circuitRelay)
.withAutonat()
# libp2p 2.0.0 folded withMaxConnections and withMaxInOut into a single
# `limits` field: they are mutually exclusive (last one wins), and
# ConnectionLimits.maxInOut asserts maxIn/maxOut > 0. So apply explicit in/out
# limits only when both are provided (>0); otherwise use the shared total cap.
if maxIn > 0 and maxOut > 0:
b = b.withMaxInOut(maxIn, maxOut)
else:
b = b.withMaxConnections(maxConnections)
if peerStoreCapacity.isSome():
b = b.withPeerStore(peerStoreCapacity.get())
else:
let defaultPeerStoreCapacity = int(maxConnections) * 5
b = b.withPeerStore(defaultPeerStoreCapacity)
if agentString.isSome():
b = b.withAgentVersion(agentString.get())
if privKey.isSome():
b = b.withPrivateKey(privKey.get())
# tcp always; ws/quic added when their addr is set
var addresses: seq[MultiAddress]
if wsAddress.isSome():
addresses.add(wsAddress.get())
addresses.add(address)
if quicAddress.isSome():
addresses.add(quicAddress.get())
b = b.withAddresses(addresses)
b = b.withTcpTransport(transportFlags)
if wsAddress.isSome():
if wssEnabled:
b = b.withWssTransport(secureKeyPath, secureCertPath)
else:
b = b.withWsTransport()
if quicAddress.isSome():
b = b.withQuicTransport()
if not rendezvous.isNil():
b = b.withRendezVous()
b.build()