diff --git a/hole-punch-interop/impl/nim/hole_punching.nim b/hole-punch-interop/impl/nim/hole_punching.nim
index ea5fa0f9f..584325d91 100644
--- a/hole-punch-interop/impl/nim/hole_punching.nim
+++ b/hole-punch-interop/impl/nim/hole_punching.nim
@@ -12,6 +12,7 @@ import libp2p/[builders,
 import libp2p/protocols/connectivity/relay/client as rclient
 import tests/stubs/autonatclientstub
 import libp2p/protocols/ping
+import libp2p/utils/heartbeat
 
 proc createSwitch(r: Relay = nil, hpService: Service = nil): Switch =
   let rng = newRng()
@@ -19,7 +20,7 @@ proc createSwitch(r: Relay = nil, hpService: Service = nil): Switch =
     .withRng(rng)
     .withAddresses(@[ MultiAddress.init("/ip4/0.0.0.0/tcp/0").tryGet() ])
     .withObservedAddrManager(ObservedAddrManager.new(minCount = 1))
-    .withTcpTransport()
+    .withTcpTransport({ServerFlags.TcpNoDelay})
     .withYamux()
     .withAutonat()
     .withNoise()
@@ -34,6 +35,12 @@ proc createSwitch(r: Relay = nil, hpService: Service = nil): Switch =
   s.mount(Ping.new(rng=rng))
   return s
 
+
+proc ping(conn: Connection) {.async.} =
+  let pingProtocol = Ping.new()
+  heartbeat "Ping background proc", 30.seconds:
+    discard await pingProtocol.ping(conn)
+
 proc main() {.async.} =
   let relayClient = RelayClient.new()
   let autoRelayService = AutoRelayService.new(1, relayClient, nil, newRng())
@@ -48,31 +55,46 @@ proc main() {.async.} =
   let
     isListener = getEnv("MODE") == "listen"
     redisClient = open("redis", 6379.Port)
-
   debug "Connected to redis"
 
-  if isListener:
-    let relayAddr =
-      try:
-        redisClient.bLPop(@["RELAY_TCP_ADDRESS"], 20)
-      except Exception as e:
-        raise newException(CatchableError, e.msg)
-    debug "Got relay address"
+  let relayAddr =
+    try:
+      redisClient.bLPop(@["RELAY_TCP_ADDRESS"], 0)
+    except Exception as e:
+      raise newException(CatchableError, e.msg)
+  let relayMA = MultiAddress.init(relayAddr[1]).tryGet()
+  debug "Got relay address", relayMA
 
-    let relayMA = MultiAddress.init(relayAddr[1]).tryGet()
+  if isListener:
     let relayId = await switch.connect(relayMA)
     debug "Connected to relay", relayId
 
-    await sleepAsync(20.seconds)
+    let conn = await switch.dial(relayId, @[relayMA], PingCodec)
+    asyncSpawn conn.ping()
+
+    while switch.peerInfo.addrs.len == 0:
+      debug "Waiting for addresses"
+      await sleepAsync(200.milliseconds)
+
     let listenerPeerId = switch.peerInfo.peerId
     discard redisClient.rPush("LISTEN_CLIENT_PEER_ID", $listenerPeerId)
+    debug "Addresses", addrs = $(switch.peerInfo.addrs)
     debug "Pushed listener client peer id to redis", listenerPeerId
+    await sleepAsync(2.minutes)
+    await conn.close()
   else:
-   let listenerId =
-     try:
-       redisClient.bLPop(@["LISTEN_CLIENT_PEER_ID"], 20)
-     except Exception as e:
-       raise newException(CatchableError, e.msg)
+    let listenerId =
+      try:
+        PeerId.init(redisClient.bLPop(@["LISTEN_CLIENT_PEER_ID"], 0)[1]).tryGet()
+      except Exception as e:
+        raise newException(CatchableError, e.msg)
+    debug "Got listener peer id", listenerId
+    let listenerRelayAddrStr = $relayMA & "/p2p-circuit"
+    debug "Listener relay address string", listenerRelayAddrStr
+    let listenerRelayAddr = MultiAddress.init(listenerRelayAddrStr).tryGet()
+    debug "Dialing listener relay address", listenerRelayAddr
+    await switch.connect(listenerId, @[listenerRelayAddr])
+    await sleepAsync(2.minutes)
   # var i = 1
   # var flags = Flags(transport: "tcp")
   # while i < paramCount():
@@ -98,7 +120,7 @@ proc main() {.async.} =
   # else:
   #   await runClient(flags)
 try:
-  discard waitFor(main().withTimeout(2.minutes))
+  discard waitFor(main().withTimeout(4.minutes))
 except Exception as e:
   error "Unexpected error", msg = e.msg
 quit(1)
\ No newline at end of file