nim-libp2p/tests/testrelay.nim

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{.used.}
import options, chronos
import stew/byteutils
import ../libp2p/[protocols/relay,
multiaddress,
peerinfo,
peerid,
stream/connection,
multistream,
transports/transport,
switch,
builders,
upgrademngrs/upgrade,
varint,
daemon/daemonapi]
import ./helpers
proc new(T: typedesc[RelayTransport], relay: Relay): T =
T.new(relay = relay, upgrader = relay.switch.transports[0].upgrader)
proc writeLp*(s: StreamTransport, msg: string | seq[byte]): Future[int] {.gcsafe.} =
## write lenght prefixed
var buf = initVBuffer()
buf.writeSeq(msg)
buf.finish()
result = s.write(buf.buffer)
proc readLp*(s: StreamTransport): Future[seq[byte]] {.async, gcsafe.} =
## read length prefixed msg
var
size: uint
length: int
res: VarintResult[void]
result = newSeq[byte](10)
for i in 0..<len(result):
await s.readExactly(addr result[i], 1)
res = LP.getUVarint(result.toOpenArray(0, i), length, size)
if res.isOk():
break
res.expect("Valid varint")
result.setLen(size)
if size > 0.uint:
await s.readExactly(addr result[0], int(size))
suite "Circuit Relay":
asyncTeardown:
await allFutures(src.stop(), dst.stop(), rel.stop())
checkTrackers()
var
protos {.threadvar.}: seq[string]
customProto {.threadvar.}: LPProtocol
ma {.threadvar.}: MultiAddress
src {.threadvar.}: Switch
dst {.threadvar.}: Switch
rel {.threadvar.}: Switch
relaySrc {.threadvar.}: Relay
relayDst {.threadvar.}: Relay
relayRel {.threadvar.}: Relay
conn {.threadVar.}: Connection
msg {.threadVar.}: ProtoBuffer
rcv {.threadVar.}: Option[RelayMessage]
proc createMsg(
msgType: Option[RelayType] = RelayType.none,
status: Option[RelayStatus] = RelayStatus.none,
src: Option[RelayPeer] = RelayPeer.none,
dst: Option[RelayPeer] = RelayPeer.none): ProtoBuffer =
encodeMsg(RelayMessage(msgType: msgType, srcPeer: src, dstPeer: dst, status: status))
proc checkMsg(msg: Option[RelayMessage],
msgType: Option[RelayType] = none[RelayType](),
status: Option[RelayStatus] = none[RelayStatus](),
src: Option[RelayPeer] = none[RelayPeer](),
dst: Option[RelayPeer] = none[RelayPeer]()): bool =
msg.isSome and msg.get == RelayMessage(msgType: msgType, srcPeer: src, dstPeer: dst, status: status)
proc customHandler(conn: Connection, proto: string) {.async.} =
check "line1" == string.fromBytes(await conn.readLp(1024))
await conn.writeLp("line2")
check "line3" == string.fromBytes(await conn.readLp(1024))
await conn.writeLp("line4")
await conn.close()
asyncSetup:
# Create a custom prototype
protos = @[ "/customProto", RelayCodec ]
customProto = new LPProtocol
customProto.handler = customHandler
customProto.codec = protos[0]
ma = MultiAddress.init("/ip4/0.0.0.0/tcp/0").tryGet()
src = newStandardSwitch()
rel = newStandardSwitch()
dst = SwitchBuilder
.new()
.withRng(newRng())
.withAddresses(@[ ma ])
.withTcpTransport()
.withMplex()
.withNoise()
.build()
relaySrc = Relay.new(src, false)
relayDst = Relay.new(dst, false)
relayRel = Relay.new(rel, true)
src.mount(relaySrc)
dst.mount(relayDst)
dst.mount(customProto)
rel.mount(relayRel)
src.addTransport(RelayTransport.new(relaySrc))
dst.addTransport(RelayTransport.new(relayDst))
await src.start()
await dst.start()
await rel.start()
asyncTest "Handle CanHop":
msg = createMsg(some(CanHop))
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(RelayStatus.Success))
conn = await src.dial(dst.peerInfo.peerId, dst.peerInfo.addrs, RelayCodec)
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopCantSpeakRelay))
await conn.close()
asyncTest "Malformed":
conn = await rel.dial(dst.peerInfo.peerId, dst.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Status))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
await conn.close()
check rcv.checkMsg(some(Status), some(MalformedMessage))
asyncTest "Handle Stop Error":
conn = await rel.dial(dst.peerInfo.peerId, dst.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Stop),
none(RelayStatus),
none(RelayPeer),
some(RelayPeer(peerId: dst.peerInfo.peerId, addrs: dst.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(StopSrcMultiaddrInvalid))
conn = await rel.dial(dst.peerInfo.peerId, dst.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Stop),
none(RelayStatus),
some(RelayPeer(peerId: src.peerInfo.peerId, addrs: src.peerInfo.addrs)),
none(RelayPeer))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(StopDstMultiaddrInvalid))
conn = await rel.dial(dst.peerInfo.peerId, dst.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Stop),
none(RelayStatus),
some(RelayPeer(peerId: dst.peerInfo.peerId, addrs: dst.peerInfo.addrs)),
some(RelayPeer(peerId: src.peerInfo.peerId, addrs: src.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
await conn.close()
check rcv.checkMsg(some(Status), some(StopDstMultiaddrInvalid))
asyncTest "Handle Hop Error":
conn = await src.dial(dst.peerInfo.peerId, dst.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopCantSpeakRelay))
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop),
none(RelayStatus),
none(RelayPeer),
some(RelayPeer(peerId: dst.peerInfo.peerId, addrs: dst.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopSrcMultiaddrInvalid))
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop),
none(RelayStatus),
some(RelayPeer(peerId: dst.peerInfo.peerId, addrs: dst.peerInfo.addrs)),
some(RelayPeer(peerId: dst.peerInfo.peerId, addrs: dst.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopSrcMultiaddrInvalid))
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop),
none(RelayStatus),
some(RelayPeer(peerId: src.peerInfo.peerId, addrs: src.peerInfo.addrs)),
none(RelayPeer))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopDstMultiaddrInvalid))
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop),
none(RelayStatus),
some(RelayPeer(peerId: src.peerInfo.peerId, addrs: src.peerInfo.addrs)),
some(RelayPeer(peerId: rel.peerInfo.peerId, addrs: rel.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopCantRelayToSelf))
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop),
none(RelayStatus),
some(RelayPeer(peerId: src.peerInfo.peerId, addrs: src.peerInfo.addrs)),
some(RelayPeer(peerId: rel.peerInfo.peerId, addrs: rel.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopCantRelayToSelf))
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop),
none(RelayStatus),
some(RelayPeer(peerId: src.peerInfo.peerId, addrs: src.peerInfo.addrs)),
some(RelayPeer(peerId: dst.peerInfo.peerId, addrs: dst.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopNoConnToDst))
await rel.connect(dst.peerInfo.peerId, dst.peerInfo.addrs)
relayRel.maxCircuit = 0
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopCantSpeakRelay))
relayRel.maxCircuit = relay.MaxCircuit
await conn.close()
relayRel.maxCircuitPerPeer = 0
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopCantSpeakRelay))
relayRel.maxCircuitPerPeer = relay.MaxCircuitPerPeer
await conn.close()
let dst2 = newStandardSwitch()
await dst2.start()
await rel.connect(dst2.peerInfo.peerId, dst2.peerInfo.addrs)
conn = await src.dial(rel.peerInfo.peerId, rel.peerInfo.addrs, RelayCodec)
msg = createMsg(some(RelayType.Hop),
none(RelayStatus),
some(RelayPeer(peerId: src.peerInfo.peerId, addrs: src.peerInfo.addrs)),
some(RelayPeer(peerId: dst2.peerInfo.peerId, addrs: dst2.peerInfo.addrs)))
await conn.writeLp(msg.buffer)
rcv = relay.decodeMsg(await conn.readLp(relay.MsgSize))
check rcv.checkMsg(some(Status), some(HopCantDialDst))
await allFutures(dst2.stop())
asyncTest "Dial Peer":
let maStr = $rel.peerInfo.addrs[0] & "/p2p/" & $rel.peerInfo.peerId & "/p2p-circuit/p2p/" & $dst.peerInfo.peerId
let maddr = MultiAddress.init(maStr).tryGet()
await src.connect(rel.peerInfo.peerId, rel.peerInfo.addrs)
await rel.connect(dst.peerInfo.peerId, dst.peerInfo.addrs)
conn = await src.dial(dst.peerInfo.peerId, @[ maddr ], protos[0])
await conn.writeLp("line1")
check string.fromBytes(await conn.readLp(1024)) == "line2"
await conn.writeLp("line3")
check string.fromBytes(await conn.readLp(1024)) == "line4"
asyncTest "SwitchBuilder withRelay":
let
maSrc = MultiAddress.init("/ip4/0.0.0.0/tcp/0").tryGet()
maRel = MultiAddress.init("/ip4/0.0.0.0/tcp/0").tryGet()
maDst = MultiAddress.init("/ip4/0.0.0.0/tcp/0").tryGet()
srcWR = SwitchBuilder.new()
.withRng(newRng())
.withAddresses(@[ maSrc ])
.withTcpTransport()
.withMplex()
.withNoise()
.withRelayTransport(false)
.build()
relWR = SwitchBuilder.new()
.withRng(newRng())
.withAddresses(@[ maRel ])
.withTcpTransport()
.withMplex()
.withNoise()
.withRelayTransport(true)
.build()
dstWR = SwitchBuilder.new()
.withRng(newRng())
.withAddresses(@[ maDst ])
.withTcpTransport()
.withMplex()
.withNoise()
.withRelayTransport(false)
.build()
dstWR.mount(customProto)
await srcWR.start()
await dstWR.start()
await relWR.start()
let maStr = $relWR.peerInfo.addrs[0] & "/p2p/" & $relWR.peerInfo.peerId & "/p2p-circuit/p2p/" & $dstWR.peerInfo.peerId
let maddr = MultiAddress.init(maStr).tryGet()
await srcWR.connect(relWR.peerInfo.peerId, relWR.peerInfo.addrs)
await relWR.connect(dstWR.peerInfo.peerId, dstWR.peerInfo.addrs)
conn = await srcWR.dial(dstWR.peerInfo.peerId, @[ maddr ], protos[0])
await conn.writeLp("line1")
check string.fromBytes(await conn.readLp(1024)) == "line2"
await conn.writeLp("line3")
check string.fromBytes(await conn.readLp(1024)) == "line4"
await allFutures(srcWR.stop(), dstWR.stop(), relWR.stop())
asynctest "Bad MultiAddress":
await src.connect(rel.peerInfo.peerId, rel.peerInfo.addrs)
await rel.connect(dst.peerInfo.peerId, dst.peerInfo.addrs)
expect(CatchableError):
let maStr = $rel.peerInfo.addrs[0] & "/p2p/" & $rel.peerInfo.peerId & "/p2p/" & $dst.peerInfo.peerId
let maddr = MultiAddress.init(maStr).tryGet()
conn = await src.dial(dst.peerInfo.peerId, @[ maddr ], protos[0])
expect(CatchableError):
let maStr = $rel.peerInfo.addrs[0] & "/p2p/" & $rel.peerInfo.peerId
let maddr = MultiAddress.init(maStr).tryGet()
conn = await src.dial(dst.peerInfo.peerId, @[ maddr ], protos[0])
expect(CatchableError):
let maStr = "/ip4/127.0.0.1"
let maddr = MultiAddress.init(maStr).tryGet()
conn = await src.dial(dst.peerInfo.peerId, @[ maddr ], protos[0])
expect(CatchableError):
let maStr = $dst.peerInfo.peerId
let maddr = MultiAddress.init(maStr).tryGet()
conn = await src.dial(dst.peerInfo.peerId, @[ maddr ], protos[0])