UnityRenderStreaming/com.unity.renderstreaming/Documentation~/overview.md

Overview

The following is an explanation the general concepts of the Unity Render Streaming system.

System Structure

The Render Streaming system consists of the following 3 components.

• Signaling server
• Peer 1 (Sender)
• Peer 2 (Receiver)

In Render Streaming a P2P network is created between two peers, and this network sends video/audio/binary data. The Web server enables communication between two peers. This communication is called signaling.

The Signaling Process

The following is an explanation of how signaling works.

1. Peer 1 sends Offer SDP to Signaling Server.
2. The Peer 2 checks the Signaling Server for unprocessed Offer SDPs and receives any found.
3. The Peer 2 sends Answer SDP to the Signaling Server.
4. The Peer 1 checks the Signaling Server for unprocessed Answer SDPs and receives any found.
5. The Peer 1 sends ICE Candidate to the Signaling Server.
6. The Peer 2 checks the Signaling Server for unprocessed ICE Candidates and receives any found.
7. The Peer 2 sends ICE Candidateto the Signaling Server.
8. The Peer 1 checks the Signaling Server for unprocessed ICE Candidate and receives any found.
9. The connection establishment between peers are completed and Peer 1 can send streams to the Peer 2.