Connection Reset on AT09 device

Siddharth 8 years ago

Hello All,

I have bought and installed a AT09 model GPS device which came with a backend subscription. I want to switch that device to traccar and am facing difficulties in doing so.

  • As per traccar's device listing page, AT09 uses the totem protocol. But the protocol documentation which we got with the device is a different one.

  • I wanted to setup the device with the server on any port to analyze the data. But the moment I connect the device to traccar server, I see the error as given below, in the traccar logs.

  • But the device does work fine, when connected to its original backend. What could be the issue? any directions please...

2018-03-09 09:55:26  INFO: [22D315EC] disconnected
2018-03-09 09:55:38  INFO: [EF04747D] connected
2018-03-09 09:55:38  WARN: [EF04747D] error - Connection reset by peer - IOException (...)
2018-03-09 09:55:38  INFO: [EF04747D] disconnected
2018-03-09 09:55:53  INFO: [AE63A28D] connected
2018-03-09 09:55:53  WARN: [AE63A28D] error - Connection reset by peer - IOException (...)
2018-03-09 09:55:53  INFO: [AE63A28D] disconnected
2018-03-09 09:56:05  INFO: [D9A58250] connected
2018-03-09 09:56:05  WARN: [D9A58250] error - Connection reset by peer - IOException (...)
2018-03-09 09:56:05  INFO: [D9A58250] disconnected
2018-03-09 09:59:32  INFO: [06453D35] connected
2018-03-09 09:59:32  WARN: [06453D35] error - Connection reset by peer - IOException (...)
2018-03-09 09:59:32  INFO: [06453D35] disconnected
2018-03-09 09:59:53  INFO: [4D47ABBE] connected
2018-03-09 10:00:09  WARN: [4D47ABBE] error - Connection reset by peer - IOException (...)
2018-03-09 10:00:09  INFO: [4D47ABBE] disconnected
2018-03-09 10:00:21  INFO: [E8C1EB54] connected
2018-03-09 10:00:21  WARN: [E8C1EB54] error - Connection reset by peer - IOException (...)
2018-03-09 10:00:21  INFO: [E8C1EB54] disconnected
2018-03-09 10:00:34  INFO: [ED68BD46] connected
2018-03-09 10:00:34  WARN: [ED68BD46] error - Connection reset by peer - IOException (...)
2018-03-09 10:00:34  INFO: [ED68BD46] disconnected
2018-03-09 10:00:46  INFO: [4B2AA7D8] connected
2018-03-09 10:00:46  WARN: [4B2AA7D8] error - Connection reset by peer - IOException (...)
2018-03-09 10:00:46  INFO: [4B2AA7D8] disconnected
2018-03-09 10:01:00  INFO: [105441BC] connected
2018-03-09 10:01:00  WARN: [105441BC] error - Connection reset by peer - IOException (...)
2018-03-09 10:01:00  INFO: [105441BC] disconnected
2018-03-09 10:01:13  INFO: [57FFAB12] connected
2018-03-09 10:01:13  WARN: [57FFAB12] error - Connection reset by peer - IOException (...)
2018-03-09 10:01:13  INFO: [57FFAB12] disconnected
2018-03-09 10:01:25  INFO: [96D79FD1] connected
2018-03-09 10:01:26  WARN: [96D79FD1] error - Connection reset by peer - IOException (...)
2018-03-09 10:01:26  INFO: [96D79FD1] disconnected
2018-03-09 10:01:39  INFO: [BC40973F] connected
2018-03-09 10:01:39  WARN: [BC40973F] error - Connection reset by peer - IOException (...)
2018-03-09 10:01:39  INFO: [BC40973F] disconnected
Anton Tananaev 8 years ago

Your device doesn't seem to send any data. I'm not even sure that those logs are from your device.

Siddharth 8 years ago

Hi Anton,

These logs are from this device, I'm sure of that. These logs were collected when this was the only device connecting to this server. Took a Wireshark dump too, to confirm this. Noticed something odd in the Wireshark dump (given below).

Server <- Client SYN
Server -> Client SYN-ACK
Server <- Client ACK
Server <- Client RST

No. Time Source Destination Protocol Length Info

1830 81.510478 42.111.183.140 172.31.30.47 TCP 58 23435 → 11903 [SYN] Seq=0 Win=23040 Len=0 MSS=1300

1831 81.510570 172.31.30.47 42.111.183.140 TCP 58 11903 → 23435 [SYN, ACK] Seq=0 Ack=1 Win=8192 Len=0 MSS=8961

1839 82.249839 42.111.183.140 172.31.30.47 TCP 54 23435 → 11903 [ACK] Seq=1 Ack=1 Win=23040 Len=0

1846 82.729720 42.111.183.140 172.31.30.47 TCP 54 23435 → 11903 [RST] Seq=1 Win=65535 Len=0

No. Time Source Destination Protocol Length Info

2574 142.173600 42.111.189.8 172.31.30.47 TCP 58 1894 → 11903 [SYN] Seq=0 Win=23040 Len=0 MSS=1300

2575 142.173676 172.31.30.47 42.111.189.8 TCP 58 11903 → 1894 [SYN, ACK] Seq=0 Ack=1 Win=8192 Len=0 MSS=8961

2582 142.710676 42.111.189.8 172.31.30.47 TCP 54 1894 → 11903 [ACK] Seq=1 Ack=1 Win=23040 Len=0

2586 142.950100 42.111.189.8 172.31.30.47 TCP 54 1894 → 11903 [RST] Seq=1 Win=65535 Len=0

Robson 7 years ago

Same problem here. Did you find any solution?