Timestamp

[guy426]

Time of messages is always year 1980..

[fedyfausto]

Can you give more details about the environment? to reproduce the situation

[guy426]

My network server is Chirpstack
This is an example of decoded packet:
{"tst":"2023-09-27T10:57:15.161510+0200","topic":"application/9e548d1d-37cb-43fc-8231-25bfe45508f3/device/685b00ff4c1f9511/event/up","qos":0,"retain":0,"payloadlen":1436,"payload":{"deduplicationId":"a7fed1c4-6243-44af-9310-f3f4e3e3eb00","time":"1980-01-21T23:17:20.234+00:00","deviceInfo":{"tenantId":"52f14cd4-c6f1-4fbd-8f87-4025e1d49242","tenantName":"ChirpStack","applicationId":"9e548d1d-37cb-43fc-8231-25bfe45508f3","applicationName":"counter","deviceProfileId":"408f84b7-f359-4995-8fb7-1a70f0f12f85","deviceProfileName":"device_profile","deviceName":"dev3","devEui":"685b00ff4c1f9511","deviceClassEnabled":"CLASS_A","tags":{}},"devAddr":"010da236","adr":true,"dr":0,"fCnt":183,"fPort":1,"confirmed":false,"data":"dGVzdDMgMjAgc2Vjb25kaQ==","object":{"cmd":"test3 20 secondi"},"rxInfo":[{"gatewayId":"285bd82c7d76e7e1","uplinkId":50925,"time":"2023-09-27T08:57:14+00:00","timeSinceGpsEpoch":"1379840.234s","rssi":-60,"snr":7,"channel":1,"location":{"latitude":43.735555660125584,"longitude":10.95216751098633,"source":"GPS"},"context":"ZRPuag==","metadata":{"region_config_id":"eu868","region_common_name":"EU868"},"crcStatus":"CRC_OK"},{"gatewayId":"4645c2a5de7dfb99","uplinkId":58674,"time":"2023-09-27T08:57:14+00:00","timeSinceGpsEpoch":"1379840.234s","rssi":-60,"snr":7,"channel":1,"location":{"latitude":43.724019581115016,"longitude":10.949935913085939,"source":"GPS"},"context":"ZRPuag==","metadata":{"region_config_id":"eu868","region_common_name":"EU868"},"crcStatus":"CRC_OK"}],"txInfo":{"frequency":868300000,"modulation":{"lora":{"bandwidth":125000,"spreadingFactor":12,"codeRate":"CR_4_5"}}}}}

[fedyfausto]

ok the problem could be the forwarder because the new protocol requires a valid GPS to bring the timestamp, I will investigate on this

[itarozzi]

I can confirm this issue.
The field timeSinceGpsEpoch contains a bad value, not corresponding to the time field