🔍 Testing Teltonika IMEI Acknowledgment Format
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📊 Acknowledgment Details:
- Raw byte: 

- Hex value: 0x01
- Decimal value: 1
- Length: 1 byte(s)

📱 IMEI Parsing Test:
- Input hex: 383632353637303732353630393737
- Parsed IMEI: 862567072560977
- Expected IMEI: 862567072560977
- Match: ✅ Yes

📦 Packet Structure Test:
- Packet length: 32 bytes
- Length field: 0x000f (should be 0x000f = 15)
- IMEI field: 333833363332333533363337333033373332333533363330333933373337

🎯 Expected Behavior:
1. Device sends: [0x00, 0x0f] + IMEI (17 bytes total)
2. Server responds: [0x01] (1 byte acknowledgment)
3. Device should then send GPS data packets

🚨 Current Issue Analysis:
- IMEI packets are being received ✅
- Acknowledgment is being attempted ✅
- But 'IMEI acknowledgment sent' logs are missing ❌
- This suggests the acknowledgment is failing silently

🔧 Possible Causes:
1. Connection is closed before acknowledgment is sent
2. Acknowledgment is sent but not flushed properly
3. Device expects different acknowledgment format
4. Network/firewall issues
5. Workerman connection handling issue

✅ Test completed. The acknowledgment format (0x01) is correct.
The issue is likely in the connection handling or timing.