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    Constant 'connection interrupted'

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    • A Former User?
      A Former User
      last edited by A Former User

      At about 16 seconds and again at 148 can see the browser reconnecting and the uptime counter the duet not resetting and the duet going radio silent a few seconds earlier.

      there are some duplicate and resent frames, will have to spend some time later seeing if thats what trips up the duet but looks like the issue is on the duet's wifi end at a glance

      edit: btw are you able to have a usb serial terminal connected while this is happening? could be enabling debugging for either wifi or http outputs something relevant.

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      • Fodenundefined
        Foden
        last edited by Foden

        This is typical when the connection drops
        Picture3.png

        when things are OK
        Picture4.png

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        • Vetiundefined
          Veti
          last edited by

          seems like high packet loss.

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          • Fodenundefined
            Foden
            last edited by

            Pretty much, as once the Duet drops off the web interface keeps trying to reconnect

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            • A Former User?
              A Former User
              last edited by

              Maybe the Duet is running out of connections as a result of a lossy link and reconnects? But the pattern is similar in OPs capture (just a fraction of mangled packets).

              Debugging the wifi or just improving the signal quality is the lowest hanging fruit as i see it.

              Fodenundefined 1 Reply Last reply Reply Quote 0
              • jens55undefined
                jens55
                last edited by

                One of my tests when I had these issues was to put an access point right next to the Duet - didn't make a difference. Signal levels also seemed good (around -60dbm). At the same time I was having connection issues, a pi zero W with a camera that watches my printer did not have any connection issues.
                Of course this was only my situation at the time (and I did not run wireshark) and so might be completely unrelated.

                BoAundefined 1 Reply Last reply Reply Quote 0
                • BoAundefined
                  BoA @jens55
                  last edited by

                  @jens55 You had -60 dbm with AP next to the duet? Would be on the low side then.

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                  • A Former User?
                    A Former User
                    last edited by

                    There is such a thing as too close when it comes to radio stuff.

                    But given its not a common issue I'm more inclined to think its triggered by environment or setup. The more info we can gather the easier it would be for devs to pinpoint and fix

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                    • jens55undefined
                      jens55
                      last edited by

                      Sorry, to clarify, the (around) -60 dbm was the normal setup and not with the access point right next to the printer.

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                      • Fodenundefined
                        Foden @A Former User
                        last edited by Foden

                        @bearer Only thing having issues is my Duet, everything else Wi-Fi related is fine. I have a wireless camera on the printer using the same SSID and it's OK. Definitely the Duet, likely the wifi module as Phaedrux suggested.

                        Nothing changed on the network environment and life was hunky dory until firmware and Duet web interface upgrade. If i get chance over the weekend I will look to go back to an earlier setup

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                        • mrehorstdmdundefined
                          mrehorstdmd
                          last edited by

                          I couldn't roll back to the old firmware, but I put my machine in AP mode and found that it does not drop the connection like it does in client mode. It does do something weird every hour- I get messages about a possible virus attack on the console. Here's the console text including results of M122:

                          11/22/2020, 6:13:42 PM: Connected to 192.168.0.254
                          11/22/2020, 6:14:07 PM: M32 "0:/gcodes/11-22-20-001.gcode": File 0:/gcodes/11-22-20-001.gcode selected for printing
                          11/22/2020, 6:14:42 PM: Connection interrupted, attempting to reconnect...: Network error
                          11/22/2020, 6:15:18 PM: Connection established
                          11/22/2020, 6:21:26 PM: : Finished printing file 0:/gcodes/11-22-20-001.gcode, print time was 0h 7m
                          11/22/2020, 6:35:53 PM: : Warning: IP 192.168.0.154 requested file 'rootr1/ME4wTDBKMEgwR...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'rootr3/ME8wTTBLMEkwR...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'gsextendcodesignsha2...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'gstimestampingsha2g2...' from HTTP server, possibly a virus attack
                          11/22/2020, 7:36:13 PM: : Warning: IP 192.168.0.154 requested file 'rootr1/ME4wTDBKMEgwR...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'rootr3/ME8wTTBLMEkwR...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'gsextendcodesignsha2...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'gstimestampingsha2g2...' from HTTP server, possibly a virus attack
                          11/22/2020, 7:58:32 PM: M32 "0:/gcodes/11-19-20-002.gcode": File 0:/gcodes/11-19-20-002.gcode selected for printing
                          11/22/2020, 8:12:02 PM: M25: Resume state saved
                          11/22/2020, 8:12:07 PM: : Printing paused at X600.0 Y990.0 Z0.0
                          11/22/2020, 8:13:13 PM: M0 H1: Cancelled printing file 0:/gcodes/11-19-20-002.gcode, print time was 0h 13m
                          11/22/2020, 8:13:28 PM: m84
                          11/22/2020, 8:21:47 PM: M32 "0:/gcodes/test03.gcode": File 0:/gcodes/test03.gcode selected for printing
                          11/22/2020, 8:25:24 PM: M122: === Diagnostics ===
                          RepRapFirmware for Duet 2 WiFi/Ethernet version 3.1.1 running on Duet WiFi 1.02 or later
                          Board ID: 08DGM-917DA-G4MSJ-6JTF2-3SD6J-KTNHA
                          Used output buffers: 3 of 24 (13 max)
                          === RTOS ===
                          Static ram: 27980
                          Dynamic ram: 92564 of which 932 recycled
                          Exception stack ram used: 544
                          Never used ram: 9052
                          Tasks: NETWORK(ready,412) HEAT(blocked,1456) MAIN(running,1732) IDLE(ready,80)
                          Owned mutexes: WiFi(NETWORK)
                          === Platform ===
                          Last reset 02:14:41 ago, cause: software
                          Last software reset time unknown, reason: User, spinning module GCodes, available RAM 9292 bytes (slot 3)
                          Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0041f000 BFAR 0xe000ed38 SP 0xffffffff Task MAIN
                          Error status: 0
                          MCU temperature: min 33.5, current 39.4, max 39.6
                          Supply voltage: min 24.1, current 24.3, max 24.6, under voltage events: 0, over voltage events: 0, power good: yes
                          Driver 0: standstill, SG min/max not available
                          Driver 1: standstill, SG min/max not available
                          Driver 2: standstill, SG min/max not available
                          Driver 3: standstill, SG min/max not available
                          Driver 4: standstill, SG min/max not available
                          Date/time: 2020-11-22 20:25:23
                          Cache data hit count 4294967295
                          Slowest loop: 266.72ms; fastest: 0.13ms
                          I2C nak errors 0, send timeouts 0, receive timeouts 0, finishTimeouts 0, resets 0
                          === Storage ===
                          Free file entries: 9
                          SD card 0 detected, interface speed: 20.0MBytes/sec
                          SD card longest read time 2.7ms, write time 104.3ms, max retries 0
                          === Move ===
                          Hiccups: 2101(0), FreeDm: 167, MinFreeDm: 159, MaxWait: 5826231ms
                          Bed compensation in use: none, comp offset 0.000
                          === MainDDARing ===
                          Scheduled moves: 233, completed moves: 224, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: 3
                          === AuxDDARing ===
                          Scheduled moves: 0, completed moves: 0, StepErrors: 0, LaErrors: 0, Underruns: 0, 0  CDDA state: -1
                          === Heat ===
                          Bed heaters = -1 -1 -1 -1, chamberHeaters = -1 -1 -1 -1
                          === GCodes ===
                          Segments left: 1
                          Movement lock held by null
                          HTTP is idle in state(s) 0
                          Telnet is idle in state(s) 0
                          File is doing "G01 X2.673 Y859.133" in state(s) 0
                          USB is idle in state(s) 0
                          Aux is idle in state(s) 0
                          Trigger is idle in state(s) 0
                          Queue is idle in state(s) 0
                          Daemon is idle in state(s) 0
                          Autopause is idle in state(s) 0
                          Code queue is empty.
                          === Network ===
                          Slowest loop: 209.83ms; fastest: 0.00ms
                          Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions
                          HTTP sessions: 1 of 8
                          - WiFi -
                          Network state is active
                          WiFi module is providing access point 
                          Failed messages: pending 0, notready 81, noresp 1
                          WiFi firmware version 1.23
                          WiFi MAC address ee:fa:bc:01:df:36
                          WiFi Vcc 3.35, reset reason Exception
                          WiFi flash size 4194304, free heap 24728
                          WiFi IP address 192.168.0.254
                          Connected clients 1
                          Socket states: 0 0 0 0 0 0 0 0
                          11/22/2020, 8:36:33 PM: : Warning: IP 192.168.0.154 requested file 'rootr1/ME4wTDBKMEgwR...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'rootr3/ME8wTTBLMEkwR...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'gsextendcodesignsha2...' from HTTP server, possibly a virus attack
                          Warning: IP 192.168.0.154 requested file 'gstimestampingsha2g2...' from HTTP server, possibly a virus attack
                          
                          

                          I was also running wireshark and grabbed all the traffic for about 5 minutes. I stopped capture shortly after the last "virus attack" messages were generated.

                          https://drmrehorst.blogspot.com/

                          A Former User? Phaedruxundefined 2 Replies Last reply Reply Quote 0
                          • Phaedruxundefined
                            Phaedrux Moderator
                            last edited by Phaedrux

                            @mrehorstdmd
                            Do you have any anti virus software on your PC?

                            https://forum.duet3d.com/topic/18054/virus-warning-message/2?_=1606098311359

                            Z-Bot CoreXY Build | Thingiverse Profile

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                            • A Former User?
                              A Former User @mrehorstdmd
                              last edited by

                              @mrehorstdmd what is the 192.168.0.154 host? it certainly seems like its got some sort of malware looking for exploits

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                              • mrehorstdmdundefined
                                mrehorstdmd
                                last edited by

                                192.168.0.154 is the laptop that is connected to the Duet. Windows defender and Malwarebytes didn't find anything.

                                https://drmrehorst.blogspot.com/

                                Phaedruxundefined 1 Reply Last reply Reply Quote 0
                                • Phaedruxundefined
                                  Phaedrux Moderator @mrehorstdmd
                                  last edited by

                                  @mrehorstdmd well in some cases it's the av software that's sending some packets that are making it puke. Not sure if that's the case here though. Try disabling malwarebytes.

                                  Z-Bot CoreXY Build | Thingiverse Profile

                                  mrehorstdmdundefined 1 Reply Last reply Reply Quote 0
                                  • A Former User?
                                    A Former User
                                    last edited by A Former User

                                    didn't see packets like that in the first wireshark capture where it did go wonky. (not sure if non-unicast traffic would be captured though)

                                    netstat -o -m | find "192.68.0.254:80" should list he PID for the process behind the request and tasklist /FI "PID eq 1234" should find the executable name (replacing 1234 with the actual process id from netstat)

                                    downside is you have to run the commands when the its being sent so tricky to do on once in a while stuff without getting more creative.

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                                    • mrehorstdmdundefined
                                      mrehorstdmd @Phaedrux
                                      last edited by

                                      @Phaedrux said in Constant 'connection interrupted':

                                      @mrehorstdmd well in some cases it's the av software that's sending some packets that are making it puke. Not sure if that's the case here though. Try disabling malwarebytes.

                                      Malwarebytes wasn't running when those messages were generated. Windows might have been doing it...

                                      https://drmrehorst.blogspot.com/

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                                      • Phaedruxundefined
                                        Phaedrux Moderator @mrehorstdmd
                                        last edited by

                                        @mrehorstdmd said in Constant 'connection interrupted':

                                        I couldn't roll back to the old firmware

                                        Probably missing the IAP files from RRF2. Try grabbing iap4e and iap4s from the 2.03 release and putting them in sys. Then try uploading the full 2.05.1 release zip.

                                        I put my machine in AP mode and found that it does not drop the connection like it does in client mode.

                                        Well at least that means the module is probably OK.

                                        Malwarebytes wasn't running when those messages were generated. Windows might have been doing it...

                                        Maybe. That would seem aggressive for Windows Defender.

                                        Z-Bot CoreXY Build | Thingiverse Profile

                                        A Former User? 1 Reply Last reply Reply Quote 0
                                        • A Former User?
                                          A Former User @Phaedrux
                                          last edited by

                                          @Phaedrux said in Constant 'connection interrupted':

                                          Probably missing the IAP files from RRF2. Try grabbing iap4e and iap4s from the 2.03 release and putting them in sys. Then try uploading the full 2.05.1 release zip.

                                          if hes running 3.1.1 then he would need the IAP files from 3.1.1 to downgrade to 2.05.1 if thats the issue.

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                                          • Fodenundefined
                                            Foden
                                            last edited by

                                            Replacement Wi-Fi module has arrived, will look to get it installed in the next couple of weeks (hopefully without frying the Duet)

                                            Took 2 weeks to arrive from Germany, roughly $6CDN

                                            https://www.ebay.ca/itm/254138264408

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