Spreed standalone signaling server

It is composed from following services:

• Spreed backend (it is REST api service) which control everything
• NATS (Messaging server)
• Janus WebRTC server
• CoTURN server (act as STUN/TURN)

Notes for dockerized solution:

• It is using direct host network because large ranges of ports are needed (RTP/TURN) and Docker port forwarding proxy performance is poor.
• Using one shared host network let detect already used ports when 2 services can opens ports with overlaping ranges:
  • Janus WebRTC opens listening ports 10000-60000
  • TURN also opens listening ports 49152-65535

Port forwarding is needed:

• Spreed backend HTTP port 3080 (set in server.conf) neeeds to be rev proxied with SSL to external IP with attached domain
• STUN/TURN UDP/TCP port 3478
• RTP/TURN range: 10000-65535
  • CoTURN UDP/TCP ports 49152-65535
  • Janus WebRTC:
    • nice_agent_set_port_range(handle→agent, handle→stream_id, 1, rtp_range_min, rtp_range_max);

/* RTP/RTCP port range */ uint16_t rtp_range_min = 0; uint16_t rtp_range_max = 0;