fix(dcutr): make the dcutr client inbound and the server outbound (#983)
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diegomrsantos
Roman
parent
373a0287a5
commit
6189c2aaf5
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@ -66,7 +66,7 @@ proc startSync*(self: DcutrClient, switch: Switch, remotePeerId: PeerId, addrs:
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if peerDialableAddrs.len > self.maxDialableAddrs:
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peerDialableAddrs = peerDialableAddrs[0..<self.maxDialableAddrs]
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var futs = peerDialableAddrs.mapIt(switch.connect(stream.peerId, @[it], forceDial = true, reuseConnection = false))
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var futs = peerDialableAddrs.mapIt(switch.connect(stream.peerId, @[it], forceDial = true, reuseConnection = false, upgradeDir = Direction.In))
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try:
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discard await anyCompleted(futs).wait(self.connectTimeout)
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debug "Dcutr initiator has directly connected to the remote peer."
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@ -56,7 +56,7 @@ proc new*(T: typedesc[Dcutr], switch: Switch, connectTimeout = 15.seconds, maxDi
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if peerDialableAddrs.len > maxDialableAddrs:
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peerDialableAddrs = peerDialableAddrs[0..<maxDialableAddrs]
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var futs = peerDialableAddrs.mapIt(switch.connect(stream.peerId, @[it], forceDial = true, reuseConnection = false, upgradeDir = Direction.In))
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var futs = peerDialableAddrs.mapIt(switch.connect(stream.peerId, @[it], forceDial = true, reuseConnection = false, upgradeDir = Direction.Out))
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try:
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discard await anyCompleted(futs).wait(connectTimeout)
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debug "Dcutr receiver has directly connected to the remote peer."
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@ -57,14 +57,15 @@ suite "Dcutr":
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for t in behindNATSwitch.transports:
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t.networkReachability = NetworkReachability.NotReachable
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expect CatchableError:
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# we can't hole punch when both peers are in the same machine. This means that the simultaneous dialings will result
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# in two connections attemps, instead of one. This dial is going to fail because the dcutr client is acting as the
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# tcp simultaneous incoming upgrader in the dialer which works only in the simultaneous open case.
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await DcutrClient.new().startSync(behindNATSwitch, publicSwitch.peerInfo.peerId, behindNATSwitch.peerInfo.addrs)
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.wait(300.millis)
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checkExpiring:
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# we can't hole punch when both peers are in the same machine. This means that the simultaneous dialings will result
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# in two connections attemps, instead of one. The server dial is going to fail because it is acting as the
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# tcp simultaneous incoming upgrader in the dialer which works only in the simultaneous open case, but the client
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# dial will succeed.
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# we still expect a new connection to be open by the receiver peer acting as the dcutr server
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behindNATSwitch.connManager.connCount(publicSwitch.peerInfo.peerId) == 2
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await allFutures(behindNATSwitch.stop(), publicSwitch.stop())
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@ -83,8 +84,8 @@ suite "Dcutr":
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body
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checkExpiring:
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# no connection will be open by the receiver peer acting as the dcutr server
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behindNATSwitch.connManager.connCount(publicSwitch.peerInfo.peerId) == 1
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# we still expect a new connection to be open by the receiver peer acting as the dcutr server
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behindNATSwitch.connManager.connCount(publicSwitch.peerInfo.peerId) == 2
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await allFutures(behindNATSwitch.stop(), publicSwitch.stop())
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@ -142,13 +143,16 @@ suite "Dcutr":
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for t in behindNATSwitch.transports:
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t.networkReachability = NetworkReachability.NotReachable
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expect CatchableError:
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# we can't hole punch when both peers are in the same machine. This means that the simultaneous dialings will result
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# in two connections attemps, instead of one. This dial is going to fail because the dcutr client is acting as the
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# tcp simultaneous incoming upgrader in the dialer which works only in the simultaneous open case.
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await DcutrClient.new().startSync(behindNATSwitch, publicSwitch.peerInfo.peerId, behindNATSwitch.peerInfo.addrs)
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.wait(300.millis)
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checkExpiring:
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# we can't hole punch when both peers are in the same machine. This means that the simultaneous dialings will result
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# in two connections attemps, instead of one. The server dial is going to fail, but the client dial will succeed.
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behindNATSwitch.connManager.connCount(publicSwitch.peerInfo.peerId) == 2
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# we still expect a new connection to be open by the receiver peer acting as the dcutr server
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behindNATSwitch.connManager.connCount(publicSwitch.peerInfo.peerId) == 1
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await allFutures(behindNATSwitch.stop(), publicSwitch.stop())
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@ -193,31 +193,17 @@ suite "Hole Punching":
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await privatePeerSwitch2.connect(privatePeerSwitch1.peerInfo.peerId, (await privatePeerRelayAddr1))
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privatePeerSwitch2.connectStub = rcvConnectStub
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checkExpiring:
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# we can't hole punch when both peers are in the same machine. This means that the simultaneous dialings will result
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# in two connections attemps, instead of one. The server dial is going to fail because it is acting as the
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# tcp simultaneous incoming upgrader in the dialer which works only in the simultaneous open case, but the client
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# dial will succeed.
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privatePeerSwitch1.connManager.connCount(privatePeerSwitch2.peerInfo.peerId) == 1 and
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not isRelayed(privatePeerSwitch1.connManager.selectMuxer(privatePeerSwitch2.peerInfo.peerId).connection)
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# wait for hole punching to finish in the background
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await sleepAsync(600.millis)
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await allFuturesThrowing(
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privatePeerSwitch1.stop(), privatePeerSwitch2.stop(), switchRelay.stop(),
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switchAux.stop(), switchAux2.stop(), switchAux3.stop(), switchAux4.stop())
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asyncTest "Hole punching when peers addresses are private":
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proc connectStub(self: SwitchStub,
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peerId: PeerId,
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addrs: seq[MultiAddress],
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forceDial = false,
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reuseConnection = true,
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upgradeDir = Direction.Out): Future[void] {.async.} =
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self.connectStub = nil # this stub should be called only once
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await sleepAsync(100.millis) # avoid simultaneous dialing that causes address in use error
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await self.switch.connect(peerId, addrs, forceDial, reuseConnection, upgradeDir)
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await holePunchingTest(nil, connectStub, NotReachable)
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await holePunchingTest(nil, nil, NotReachable)
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asyncTest "Hole punching when there is an error during unilateral direct connection":
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asyncTest "Hole punching when peers addresses are private and there is an error in the initiator side":
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proc connectStub(self: SwitchStub,
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peerId: PeerId,
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