mirror of https://github.com/waku-org/nwaku.git
128 lines
3.9 KiB
Nim
128 lines
3.9 KiB
Nim
# Waku Switch utils.
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when (NimMajor, NimMinor) < (1, 4):
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{.push raises: [Defect].}
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else:
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{.push raises: [].}
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import
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std/[options, math],
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chronos, chronicles,
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eth/keys,
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libp2p/crypto/crypto,
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libp2p/protocols/pubsub/gossipsub,
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libp2p/protocols/rendezvous,
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libp2p/nameresolving/nameresolver,
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libp2p/builders,
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libp2p/switch,
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libp2p/transports/[transport, tcptransport, wstransport]
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# override nim-libp2p default value (which is also 1)
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const MaxConnectionsPerPeer* = 1
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proc withWsTransport*(b: SwitchBuilder): SwitchBuilder =
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b.withTransport(proc(upgr: Upgrade): Transport = WsTransport.new(upgr))
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proc getSecureKey(path : string): TLSPrivateKey
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{.raises: [Defect, IOError].} =
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trace "Key path is.", path=path
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let stringkey: string = readFile(path)
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try:
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let key = TLSPrivateKey.init(stringkey)
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return key
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except TLSStreamProtocolError as exc:
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debug "exception raised from getSecureKey", msg=exc.msg
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proc getSecureCert(path : string): TLSCertificate
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{.raises: [Defect, IOError].} =
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trace "Certificate path is.", path=path
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let stringCert: string = readFile(path)
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try:
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let cert = TLSCertificate.init(stringCert)
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return cert
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except TLSStreamProtocolError as exc:
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debug "exception raised from getSecureCert", msg=exc.msg
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proc withWssTransport*(b: SwitchBuilder,
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secureKeyPath: string,
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secureCertPath: string): SwitchBuilder
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{.raises: [Defect, IOError].} =
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let key : TLSPrivateKey = getSecureKey(secureKeyPath)
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let cert : TLSCertificate = getSecureCert(secureCertPath)
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b.withTransport(proc(upgr: Upgrade): Transport = WsTransport.new(upgr,
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tlsPrivateKey = key,
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tlsCertificate = cert,
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{TLSFlags.NoVerifyHost, TLSFlags.NoVerifyServerName}))
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proc newWakuSwitch*(
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privKey = none(crypto.PrivateKey),
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address = MultiAddress.init("/ip4/127.0.0.1/tcp/0").tryGet(),
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wsAddress = none(MultiAddress),
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secureManagers: openarray[SecureProtocol] = [
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SecureProtocol.Noise,
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],
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transportFlags: set[ServerFlags] = {},
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rng: ref HmacDrbgContext,
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inTimeout: Duration = 5.minutes,
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outTimeout: Duration = 5.minutes,
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maxConnections = MaxConnections,
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maxIn = -1,
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maxOut = -1,
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maxConnsPerPeer = MaxConnectionsPerPeer,
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nameResolver: NameResolver = nil,
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sendSignedPeerRecord = false,
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wssEnabled: bool = false,
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secureKeyPath: string = "",
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secureCertPath: string = "",
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agentString = none(string), # defaults to nim-libp2p version
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peerStoreCapacity = none(int), # defaults to 1.25 maxConnections
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services: seq[switch.Service] = @[],
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rendezvous: RendezVous = nil,
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): Switch
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{.raises: [Defect, IOError, LPError].} =
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var b = SwitchBuilder
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.new()
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.withRng(rng)
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.withMaxConnections(maxConnections)
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.withMaxIn(maxIn)
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.withMaxOut(maxOut)
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.withMaxConnsPerPeer(maxConnsPerPeer)
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.withMplex(inTimeout, outTimeout)
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.withNoise()
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.withTcpTransport(transportFlags)
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.withNameResolver(nameResolver)
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.withSignedPeerRecord(sendSignedPeerRecord)
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.withCircuitRelay()
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.withAutonat()
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if peerStoreCapacity.isSome():
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b = b.withPeerStore(peerStoreCapacity.get())
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else:
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let defaultPeerStoreCapacity = int(round(float64(maxConnections)*1.25))
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b = b.withPeerStore(defaultPeerStoreCapacity)
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if agentString.isSome():
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b = b.withAgentVersion(agentString.get())
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if privKey.isSome():
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b = b.withPrivateKey(privKey.get())
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if wsAddress.isSome():
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b = b.withAddresses(@[wsAddress.get(), address])
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if wssEnabled:
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b = b.withWssTransport(secureKeyPath, secureCertPath)
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else:
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b = b.withWsTransport()
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else :
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b = b.withAddress(address)
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if services.len > 0:
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b = b.withServices(services)
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if not rendezvous.isNil():
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b = b.withRendezVous(rendezvous)
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b.build()
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