I will introduce the WebRTC basics and technical terms: SDP, ICE, STUN Server, TURN Server, RTP, and Signaling. v
I will introduce the WebRTC basics and technical terms:** SDP, ICE, STUN Server, TURN Server, RTP, and **Signalling.
I want to explain the WebRTC concept with an example. Let Client-A and Client-B are two pairs who want to communicate via WebRTC. Assume that Client-A starts communication.
WebRTC is a set of technologies that enables peer to peer duplex real-time communication between browsers even behind NAT addresses.
In our example, WebRTC is the technology to establish communication between Client-A and Client-B.
SDP is a simple string-based protocol and it is to share supported codecs between browsers.
In our example,
The Signaling Server is responsible for these SDP transfer between peers.
Let assume Client-A may support H264, VP8, and VP9 codecs for video, Opus, and PCM codecs for audio. Client-B may support the only H264 for video and only Opus codec for audio. For this case, the Client-A and Client-B will use H264 and Opus for codecs. If there are no common codecs between peers, peer to peer communication cannot be established.
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