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6903 :: App crashes on Rpi4 works normal on desktop

• kodkuce (orginal) [2020-10-08T15:58:21+02:00] view original

  Ok i am fighting for 2 days with this, first i tough i broken some code but from what i see i did not, i tested created relatively minimal example, so when i run it on my pc it works no problem but when run on arm64 raspbery pi4 thats proxypassed to by nginx it crashes, posting code and error

  
  #SO IT SHOUD ERROR BUT IN EXEPCTION AND APP SHOULD
  #NOT TOTALY CLOSE LIKE WHEN RUN ON DESKTOP
  
  {.experimental: "codeReordering".}
  import asynchttpserver, asyncdispatch
  import ws, os
  
  
  type Player = ref object of RootObj
      id*:int
      conn*:WebSocket
  
  var players:seq[Player] = @[]
  players.add( Player( id:1, conn:nil ) )
  players.add( Player( id:2, conn:nil ) )
  
  
  var server = newAsyncHttpServer()
  proc cb(req: Request) {.async, gcsafe.} =
    if req.url.path == "/ws":
      var ws = await newWebSocket(req)
      await ws.send("Welcome to simple echo server")
      if players[0].conn == nil:
        players[0].conn = ws
      elif players[1].conn == nil:
        players[1].conn = ws
      
      while ws.readyState == Open:
        try:
          let packet = await ws.receiveStrPacket()
          await ws.send(packet)
        except:
          echo "incoming stream error"
    else:
      await req.respond(Http404, "Not found")
  
  var num = 0;
  proc spamMsg(){.async.}=
      while true:
        await sleepAsync(1000)
        num = num + 1;
        echo "sending fart " & $num
        for p in players:
          if p.conn != nil and p.conn.readyState == Open:
            try:
              await p.conn.send(" Fart " & $num)
            except:
              echo "error on send"
  
  proc forceClose(){.async.}=
      await sleepAsync(10000)
      echo "Closing"
      for p in players:
        if p.conn != nil and p.conn.readyState == Open:
          try:
            p.conn.close()
            #p.conn = nil
          except:
            echo "error on close"
  
  
  echo "starting"
  asyncCheck spamMsg()
  asyncCheck forceClose()
  waitFor server.serve(Port(9011), cb)
  Run

  
  ERROR PART
  starting
  sending fart 1
  sending fart 2
  sending fart 3
  sending fart 4
  sending fart 5
  sending fart 6
  sending fart 7
  sending fart 8
  sending fart 9
  Closing
  incoming stream error
  incoming stream error
  /home/me/Documents/Projects/grammergame/src/minimal.nim(63) minimal
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1892) waitFor
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1582) poll
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1346) runOnce
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(210) processPendingCallbacks
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncmacro.nim(34) processRequestNimAsyncContinue
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asynchttpserver.nim(279) processRequestIter
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncnet.nim(695) close
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1276) closeSocket
  [[reraised from:
  /home/me/Documents/Projects/grammergame/src/minimal.nim(63) minimal
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1892) waitFor
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1582) poll
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1346) runOnce
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(210) processPendingCallbacks
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncmacro.nim(34) processClientNimAsyncContinue
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asynchttpserver.nim(292) processClientIter
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncfutures.nim(383) read
  ]]
  [[reraised from:
  /home/me/Documents/Projects/grammergame/src/minimal.nim(63) minimal
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1892) waitFor
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1582) poll
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1346) runOnce
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(210) processPendingCallbacks
  /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncfutures.nim(431) asyncCheckCallback
  ]]
  Error: unhandled exception: File descriptor not registered.
  Async traceback:
    /home/me/Documents/Projects/grammergame/src/minimal.nim(63)                minimal
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1892)  waitFor
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1582)  poll
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1346)  runOnce
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(210)   processPendingCallbacks
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncmacro.nim(34)       processRequestNimAsyncContinue
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asynchttpserver.nim(279) processRequestIter
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncnet.nim(695)        close
    /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1276)  closeSocket
    #[
      /home/me/Documents/Projects/grammergame/src/minimal.nim(63)                minimal
      /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1892)  waitFor
      /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1582)  poll
      /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(1346)  runOnce
      /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncdispatch.nim(210)   processPendingCallbacks
      /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncmacro.nim(34)       processClientNimAsyncContinue
      /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asynchttpserver.nim(292) processClientIter
      /home/me/.choosenim/toolchains/nim-1.2.6/lib/pure/asyncfutures.nim(383)    read
    ]#
  Exception message: File descriptor not registered.
  Exception type: [ValueError]
  Run

  atm will try to test without nginx tough dont think its related to that but better sure then sorry :)

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• kodkuce (orginal) [2020-10-08T16:23:05+02:00] view original

  UPDATE When run whiteout Nginx to proxy pass to app it does not crash, so hmm now need to figure out if it crashes cuz Nginx or SSL next run with nginx but no SSL on

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• kodkuce (orginal) [2020-10-08T17:39:28+02:00] view original

  UPDATE 2 Running on plane http did not help still get this file descriptor error

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• moerm (orginal) [2020-10-09T00:47:40+02:00] view original

  I suggest to present code with line numbers unless it's just a couple of lines. Line 63 of what you presented is 'echo "starting"' and I strongly doubt that is the problem.

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• kodkuce (orginal) [2020-10-09T12:58:03+02:00] view original

  Switching from standard try catch to yield fixed my crash, it still trows error but at least it does not escape and crash my app :)

  Ty Rika :)

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