Protocole Diretta

[Bear]

Comme indiqué par @Patatras, les interfaces USB->RJ-45 à 2.5 GB sont capables de mtu à 16'142:

Code :

../diretta_calc.py --detect-mtu --interface enp7s0

====================================================================================================
DETECTING MTU FROM LIVE DIRETTA TRAFFIC
====================================================================================================
Interface: enp7s0
EtherType: 0x88b6 (Diretta DDS)
Capture duration: 30 seconds (max)
Minimum packets: 5

⚠ NOTE: Diretta must be actively streaming audio for detection to work!

Running: sudo tcpdump -i enp7s0 -e -n -q -s 0 ether proto 0x88b6
Capturing packets... Press Ctrl+C to stop early

✓ Packet 100: 16138 bytes (most common: 16138 bytes, 100 times)
✓ Captured enough packets (100)



====================================================================================================
MTU DETECTION RESULTS
====================================================================================================
✓ Successfully analyzed 100 Diretta packets
  Capture duration: 0.9 seconds
  Detection method: Using MOST COMMON frame size (ignores outliers)

DETECTED MTU: 16142 bytes (confidence: Very High (non-standard MTU))

Frame Size Analysis:
  Most Common Size:  16138 bytes (100.0% of packets) ← MTU indicator
  Maximum frame:    16138 bytes
  Minimum frame:    16138 bytes
  Average frame:    16138 bytes
  Std deviation:    0 bytes

Size Distribution:
  16138 bytes:  100 packets (100.0%) ██████████████████████████████████████████████████ ← MOST COMMON (MTU basis)

====================================================================================================

? TIP: Use detected MTU with: python3 ../diretta_calc.py --mtu 16142