1-ไป็ป
sequenceDiagram participant Publisher as ๅๅธ่ participant WTN as WTNๆๅกๅจ participant Subscriber as ่ฎข้ ่ Publisher->>WTN: 1. ๅ้ Offer SDP Note over Publisher,WTN: ๅ ๅซ้ณ้ขๅ่ง้ขๆ่ฟฐ WTN-->>Publisher: 2. ่ฟๅ Answer SDP Publisher->>WTN: 3. ๅปบ็ซWebRTC่ฟๆฅ Publisher->>WTN: 4. ๅๅธ้ณ่ง้ขๆต Subscriber->>WTN: 5. ่ฏทๆฑ่ฎข้ ๆต WTN-->>Subscriber: 6. ่ฟๅๆตไฟกๆฏ Subscriber->>WTN: 7. ๅปบ็ซWebRTC่ฟๆฅ WTN->>Subscriber: 8. ไผ ่พ้ณ่ง้ขๆต
ๆฅ้ขๆฅ่ชไบ ็ซๅฑฑๅผๆ rtc ้กต้ข็ๆต็จ, ็จไบไธไธช WTN ๆๅกๅจ ๅไธญ่ฝฌ, ไธๆ ทๆฏๅ
จๅๅทฅๅๅๅ่ฎฎ็่ฟๆ WebSocket ๅ WebTransport ;
WebRTC vs WebSocket vs WebTransport
graph TB subgraph WebSocket WS1[ๅบ็จๅฑๅ่ฎฎ] WS2[ๅบไบTCP] WS3[ๆๅกๅจไธญ่ฝฌ] end subgraph WebRTC W1[ไธๅฅๆๆฏๆ ๅ้ๅ] W2[ๅ ๅซๅคไธชๅ่ฎฎ] W3[UDP/TCP] W4[็นๅฏน็นไผ ่พ] W5[ไธ้จ็้ณ่ง้ขไผๅ] end
graph TB subgraph WebRTC A1[็นๅฏน็น้ไฟก] A2[้ณ่ง้ขๆตไผ ่พ] A3[STUN/TURN/ICE] A4[้ๅ่ง้ขไผ่ฎฎ] end subgraph WebTransport B1[ๅฎขๆท็ซฏ-ๆๅกๅจ้ไฟก] B2[ๅบไบQUICๅ่ฎฎ] B3[ไฝๅปถ่ฟ้ซๅๅ] B4[้ๅๆธธๆ/็ดๆญ] end
ๅฏไปฅ็ๅบๆฅ ็ฑไบ็ดๆญ่กไธ็ญ็ญ็ๅๅฑ , WebRTC ๅไธ้จไธบ้ณ่ง้ขๅฎๅถ:
- ไธ้จ้ๅฏน้ณ่ง้ข ;
- ๅ ็ฝฎๅ่ฝ: ้ณ่ง้ข้้, ็ผ่งฃ็ , ็ฝ็ปไผ ่พ, ๅ้ณๆถ้ค ;
้ณ่ง้ขไผๅ:
- ่ชๅจ็ ็้ๅบ: ่ง้ขไผ่ฎฎ่ชๅจ็่ฐๆดๆธ ๆฐๅบฆ ;
- ไธขๅ ่กฅๅฟ: ๅณไฝฟ็ฝ็ปไธ็จณๅฎ๏ผๅฃฐ้ณไนไธไผๆญๆญ็ปญ็ปญ ;
- ๅ้ณๆถ้ค: ่งฃๅณไธฒ้ณ้ฎ้ข ;
- ๅชๅฃฐๆๅถ: ่ชๅจ่ฟๆปค่ๆฏๅช้ณ, ๅผไผๅฏนๆนไนๅฌไธๅฐๅจๅด็ๅๆๅฃฐ ;
- ่ชๅจๅข็ๆงๅถ: ๅฃฐ้ณๅคชๅคง่ชๅจ้ไฝ๏ผ ๅฃฐ้ณๅคชๅฐ่ชๅจๆ้ซ ;
็ฝ็ปไผ ่พไผๅ:
NACK: ไธขๅ ้ไผ , ๅ็ฐๆฐๆฎๅ ไธขๅคฑๅ็ซๅณ่ฆๆฑ้ๅ ;FEC: ๅๅ็บ ้, ไธขๅคฑไบ้จๅๆฐๆฎ้กต่ฝ่ฟๅๅฎๆด็ป้ข ;RTX: ้ๆฉๆง้ไผ , ไผๅ ไฟ่ฏๅ ณ้ฎ็ป้ข็ไผ ่พ ;PLI: ๅ ณ้ฎๅธง่ฏทๆฑ, ่ง้ข่ฑๅฑๅฟซ้็ๆขๅคๆธ ๆฐ็ป้ข ;
2-ไบงๅๅ ณ็ณป
็ไบไธไธช็ซๅฑฑๅผๆ็ ้ณ่ง้ข้ๆ็ๅงฟๅฟ.
