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WebRTC
Nov 20, 2023
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Wonjun Hwang
Kitworks Team Study
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Ad
WebRTC
1.
What is WebRTC? れ觜
2.
WebRTC 覓伎瑚? Web Real-Time
Communication 曙襦, 觚殊一 れ螳 旧 蟲蠍 蠍一 蟲蠍 螳覦 襦碁 豕豐 觜 襷 螳ロ讌襷 谿 蠍磯レ ル 牛, 牛, 一危 れ れ螳 旧 蠍磯レ 螻 覿 蠍磯 W3C(WebRTC Working Group) 譴, 襦 覦 觚殊一 誤煙 覲伎 譴 蠍一 Secure RTP(SRTP)襯 牛 誤 旧 螻牛 覲伎 覦 螳 覲 覲危碁ゼ 螳 覲伎螻 螳 覲 1 2 3
3.
WebRTC 煙 伎 蠏語
誤 覓語 覲伎 伎 蠍磯 WebRTC 伎 觚殊一 れ螳 旧 伎 蠏語語 螳 襷 蟆 Adobe Flash, Java 襴 WebRTC螳 煙ロ蠍 , 誤磯血 牛 れ螳 覦 觜 旧 譴企 朱 襭 觚殊一 轟企 襷危襯 伎 牛襯 蟲る 蠏語語企 襭 伎 螳 觚殊一襷 るジ 蠏語語 伎 蠍 覓語 觚殊一 螳 誤 覓語螳 覦 れ 轟 蠏語語 れ螻 讌伎 蠏語語 覲伎 豸°伎 豬渚 語企 覲伎 豬曙 伎 螻糾鴬 煙 覓語螳 覦 蠍一ヾ 襭れ 譯朱 觜 牛 譴 螻 朱, れ 蠍磯リ骸 讌 牛襯 螻牛蠍 企れ
4.
WebRTC 煙 2011 Google螻 襴螳
觚殊一 蠍磯 れ螳 旧 蠍磯レ 豢螳 襦 讌 襦碁ゼ W3C螳 API 襯 讌 Peer 2 Peer 讌 覲 覯襯 蟇一讌 螻 觚殊一 觚殊一螳 旧 豌襴 覦
5.
WebRTC 煙 Peer 2
Peer / 牛
6.
WebRTC 煙 牛,
蠍磯ルれ 豌伎 ろ 豢
7.
Peer 2 Peer WebRTC
煙 1:1 牛 牛 誤磯 覦 N:N 1:N 1:1 / 旧 Peer 2 Peer 旧 覦朱 覯 覿 覓語 觜覓語 伎 牛 蟯 覈 蠍磯 蟲 蠍一ヾ SIP 襦貊襷 伎 覦 觜 覲企 蟲 螳
8.
JavaScript API Peer Connection Signalling Transport
Voice Engine Video Engine Peer 2 Peer WebRTC 蟲譟 Peer 2 Peer 郁屋 螳ロ蟆 IP/Port/Codec 牛蟆曙 WebSocket煙 伎 豌襴 Peer螳 覩碁 豌襴
9.
WebSocket 覯襯 牛 れ螳
旧 WebRTC 觚殊一 螳 れ螳 旧 一危郁 覯 讌 WebRTC 旧 螻殊
10.
WebRTC 旧 螻殊 WebSocket 牛豌
覦 Peer螳 覲 TURN Peer 螳 讌 旧 覿螳ロ 蟆曙 一危磯ゼ 襴企 郁屋 蠍磯, TURN 覯襯 牛 譴螻 一危磯ゼ 旧 讌り STUN 企殊伎誤語 螻旧 IP 譯殊 碁ゼ れ朱 ICE朱 蠏蟆 伎 覦 蟆 讌 NAT ICE Bind Request Src: 192.168.1.1:5060 Dst: 192.168.1.2:3478 Binding Response MAPPED-ADDRESS IP 11.22.33.44 Port 10080 Src: 192.168.1.1:3478 Dst: 192.168.1.1:5060
11.
WebRTC 旧 螻殊 ICE Candidate STUN,
TURN 覯襯 伎伎 IP 譯殊 襦貊, 語 譟壱朱 蟲焔 郁屋 螳ロ ろ語 譯殊れ 覲(Candidate)手 覿襴 PeerConnection 螳豌企ゼ 燕覃 candidate 襯 詞 ICE Bind Request Src: 192.168.1.1:5060 Dst: 192.168.1.2:3478 Binding Response MAPPED-ADDRESS IP 11.22.33.44 Port 10080 Src: 192.168.1.1:3478 Dst: 192.168.1.1:5060 覈 螻殊 ICE(Interactive Connectivity Establishment)朱 企伎 ICE 螳 襷 P2P 郁屋 螳ロ蟆 襦 豕 蟆暑襯 谿場譯朱 ICE STUN 螻 TURN Candidate 襯 蟆豢螻 企 譴 襯 Peer 螳 郁屋 企蟆 覲企れ 讌覃 朱朱 3螳 譯殊襯 至 IP 覯 螻旧 IP 覯 (STUN, TURN 覯襦覿 螳) TURN 覯 IP 覯 (TURN 覯襦覿 螳)
12.
WebRTC 旧 螻殊 覦
WebSocket STUN WebSocket Connection ICE Bind Response ICE Bind Request Offer ICE Bind Response WebSocket Connection ICE Bind Request Answer Offer Peer 2 Peer Answer ICE Bind Request Src: 192.168.1.1:5060 Dst: 192.168.1.2:3478 Binding Response MAPPED-ADDRESS IP 11.22.33.44 Port 10080 Src: 192.168.1.1:3478 Dst: 192.168.1.1:5060
13.
WebRTC 蠍一 豸° RTC
蠍磯蓋 螳 P2P(殊 殊) 旧 蠍磯 企ゼ 牛 觚殊一 螳 讌 郁屋 一危磯ゼ 譯手覦 牛, 牛, 一危 れ れ螳 旧 覩碁 ろ碁Μ覦 譴螳 覯 觚殊一 螳 讌 旧 P2P(peer to peer) 旧 覦 蠍壱 一危 蟲 豈 螻 一危 豈 WebRTC 旧 蠍磯 旧 覃一危 蟲 譯朱 覯 蠏碁襷 STUN (Session Traversal Utilities for NAT) 覦 TURN (Traversal Using Relays around NAT) 覯 ろ語 蟆曙 殊企 螳 郁屋 危蟆 蠍一 襴
14.
豈 郁屋
螻殊 getUserMedia 豺企, 襷危 煙 覩碁企ゼ ろ碁 襦 RTCPeerConnection 殊 螳 郁屋 れ螻 一危磯ゼ 譯手覦 覩碁 ′語 覦 ろ碁Μ覦 れ WebRTC 豐蠍壱 覦 殊 郁屋 れ Offer 覦 ICE candidate 蟲 蠏碁襷 1 覦螻殊 郁屋 所骸 れ 2 3 4
15.
豈 郁屋
螻殊 WebSocket 牛 Peer 2 Peer 郁屋 覲 app.js server.js
16.
豈 郁屋
螻殊 豺企, 襷危 煙 覩碁企ゼ ろ碁 襦 語 app.js
17.
豈 郁屋
螻殊 螳 覦 Peer り 覲 Peer A Peer A Peer A Peer B Peer B Peer B Peer A: 牛 豌 Peer B: 牛
18.
Reference https://www.youtube.com/watch?v=qXkOPXFK3f https://www.youtube.com/watch?v=8jryUH6xmjU https://www.youtube.com/watch?v=5EhsjtBE7I4 https://velog.io/@skyni/WebRTC%EC%97%90-%EB%8C%80%ED%95%9C-%EC%A0%95%EB%A6%AC https://velog.io/@lshyun955/WebRTC-%EA%B5%AC%ED%98%84%EB%B0%A9%EC%8B%9D http://www.gisdeveloper.co.kr/?p=13327
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