Cant get screego to work without network_mode: host

[nware-lab]

I checked the faq:

• you are using https to access Screego.
  yep with nginx proxy manager
• SCREEGO_EXTERNAL_IP is set to your external IP. See Configuration
  yep public ip off the vps
• you are using TURN for NAT-Traversal. See NAT-Traversal. This isn’t allowed for app.screego.net, you’ve to self-host Screego
  logs show:
  INF Start TURN/STUN addr=0.0.0.0:3478 so that looks fine to me (web ui only shows stun though I would expect it to list TURN
• your browser doesn’t block WebRTC (extensions or other settings)
  yep, ex: The public demo & on devices on the same network work
• you have opened ports in your firewall. By default 5050, 3478 and any UDP port when using TURN.
  yep

docker compose:

    image: ghcr.io/screego/server:1.12.0
    container_name: screego
    ports:
      - 5050:5050
      - 3478:3478
      - 50000-50200:50000-50200/udp
    environment:
      SCREEGO_EXTERNAL_IP: "dns:screego.<my dns name>"
      SCREEGO_TURN_PORT_RANGE: "50000:50200"
      SCREEGO_TURN_DENY_PEERS: ""
      SCREEGO_SECRET: "<some secret>"
      SCREEGO_CORS_ALLOWED_ORIGINS: "https://screego.<my dns name>"
      SCREEGO_TURN_ADDRESS: 0.0.0.0:3478
      SCREEGO_LOG_LEVEL: debug
      SCREEGO_TRUST_PROXY_HEADERS: "true"
      SCREEGO_AUTH_MODE: turn

there are probs some unnecessary settings in here but this is the point where I gave up.

extra background.

I'm using nginx proxy manager as my reverse proxy.
Container is running on a vps.
Stream works with 2 devices on my home network, But not with devices on different networks.
which to me hints towards the TURN/STUN magic.
The ui shows Nat Traversal via: STUN before joining a room.

I've turned on debug logging but saw no errors.

I feel I'm missing something obvious here.
anybody any suggestions?

[jmattheis]

The ui shows Nat Traversal via: STUN before joining a room

This means you aren't using turn. You either have to provide a users file via SCREEGO_USERS_FILE and login or use a SCREEGO_AUTH_MODE=none to disable authentication.

[nware-lab]

Yep SCREEGO_AUTH_MODE=none was the fix.

Looking at the docs its clearly stated that that was a requirement.
My bad.

Love the software, simple and it just works! (if you can read the documentation)

[nware-lab]

I'm now very confused.
I try to screenshare today and I have the same behaviour as before.
my config is

  screego:
    image: ghcr.io/screego/server:1.12.0
    ports:
      - 5050:5050
      - 3478:3478
      - 50000-50200:50000-50200/udp
    environment:
      SCREEGO_EXTERNAL_IP: "dns:screego.<mydns>"
      SCREEGO_TURN_PORT_RANGE: "50000:50200"
      SCREEGO_TURN_DENY_PEERS: ""
      SCREEGO_SECRET: "<some secret>"
      SCREEGO_CORS_ALLOWED_ORIGINS: "https://screego.<mydns>"
      SCREEGO_TURN_ADDRESS: 0.0.0.0:3478
      SCREEGO_LOG_LEVEL: debug
      SCREEGO_TRUST_PROXY_HEADERS: "true"
      SCREEGO_AUTH_MODE: none

any more suggestions ?

ui now shows Nat Traversal via: TURN though

[jmattheis]

1. Does app.screego.net work for you. Please recheck if you already tried it earlier.
2. Does it work when sharing the screen and viewing the screen on the same device?
3. Show the log screego/server when doing
   • Open the app with two clients
   • Start sharing on one of the clients

[nware-lab]

1. App.screego.net works perfect for me.
2. Yes, sharing works on same device(incognito window browser) and on 2 devices (pc & phone) on same network
   sidenote: dont think it matters much but my screego instance is hosted on a vps
3. logs: (I redacted ip adresses and hostnames)

screego-1  | 2025-06-18T19:49:13Z DBG WebSocket Done id=d19hge9on2ajqavaua7g ip=remote-pc-ip-address
screego-1  | 2025-06-18T19:50:23Z DBG Logger initialized
screego-1  | 2025-06-18T19:50:23Z INF Deny turn peers within []
screego-1  | 2025-06-18T19:50:23Z INF DNS External IP dns=system domain=screego.<my_domain> v4=my-server-ip v6=<nil>
screego-1  | 2025-06-18T19:50:23Z INF Users file not specified
screego-1  | 2025-06-18T19:50:23Z DBG Using Port Range max=50200 min=50000
screego-1  | 2025-06-18T19:50:23Z INF Start TURN/STUN addr=0.0.0.0:3478
screego-1  | 2025-06-18T19:50:23Z INF Start HTTP addr=:5050
screego-1  | 2025-06-18T19:51:01Z DBG HTTP duration="213.342µs" host=screego.<my_domain> ip=nginx-docker-container-ip:42950 path=/ size=1053 status=200
screego-1  | 2025-06-18T19:51:01Z DBG HTTP duration=2.019231ms host=screego.<my_domain> ip=nginx-docker-container-ip:42954 path=/assets/index-BZB0tFVa.js size=600268 status=200
screego-1  | 2025-06-18T19:51:01Z DBG HTTP duration="26.29µs" host=screego.<my_domain> ip=nginx-docker-container-ip:42956 path=/assets/index-CqaSkAwb.css size=29 status=200
screego-1  | 2025-06-18T19:51:02Z DBG HTTP duration="85.061µs" host=screego.<my_domain> ip=nginx-docker-container-ip:42962 path=/config size=132 status=200
screego-1  | 2025-06-18T19:51:02Z DBG HTTP duration="595.515µs" host=screego.<my_domain> ip=nginx-docker-container-ip:42984 path=/logo.svg size=232257 status=200
screego-1  | 2025-06-18T19:51:15Z DBG WebSocket New Connection id=d19hhcpon2ajqasosc50 ip=my-home-ip
screego-1  | 2025-06-18T19:51:15Z DBG HTTP duration="224.825µs" host=screego.<my_domain> ip=nginx-docker-container-ip:43754 path=/stream size=0 status=0
screego-1  | 2025-06-18T19:51:15Z DBG WebSocket Receive event=*ws.Create id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"closeOnOwnerLeave":true,"id":"loving-blue-fox","joinIfExist":true,"mode":"turn","username":""}
screego-1  | 2025-06-18T19:51:15Z DBG WebSocket Send event=room id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"id":"loving-blue-fox","mode":"","users":[{"id":"d19hhcpon2ajqasosc50","name":"Powerful Chimpanzee","owner":true,"streaming":false,"you":true}]}
screego-1  | 2025-06-18T19:51:19Z DBG HTTP duration="8.306µs" host=screego.<my_domain> ip=nginx-docker-container-ip:43956 path=/ size=1053 status=200
screego-1  | 2025-06-18T19:51:19Z DBG HTTP duration=1.930454ms host=screego.<my_domain> ip=nginx-docker-container-ip:43968 path=/assets/index-BZB0tFVa.js size=600268 status=200
screego-1  | 2025-06-18T19:51:19Z DBG HTTP duration="68.739µs" host=screego.<my_domain> ip=nginx-docker-container-ip:43970 path=/assets/index-CqaSkAwb.css size=29 status=200
screego-1  | 2025-06-18T19:51:20Z DBG HTTP duration="45.165µs" host=screego.<my_domain> ip=nginx-docker-container-ip:43976 path=/config size=138 status=200
screego-1  | 2025-06-18T19:51:20Z DBG HTTP duration="598.99µs" host=screego.<my_domain> ip=nginx-docker-container-ip:43978 path=/logo.svg size=232257 status=200
screego-1  | 2025-06-18T19:51:20Z DBG WebSocket New Connection id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address
screego-1  | 2025-06-18T19:51:20Z DBG HTTP duration="208.263µs" host=screego.<my_domain> ip=nginx-docker-container-ip:43980 path=/stream size=0 status=0
screego-1  | 2025-06-18T19:51:20Z DBG WebSocket Receive event=*ws.Join id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"id":"loving-blue-fox"}
screego-1  | 2025-06-18T19:51:20Z DBG WebSocket Send event=room id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"id":"loving-blue-fox","mode":"","users":[{"id":"d19hhcpon2ajqasosc50","name":"Powerful Chimpanzee","owner":true,"streaming":false,"you":false},{"id":"d19hhe1on2ajqasosc5g","name":"Agreeable Lion","owner":false,"streaming":false,"you":true}]}
screego-1  | 2025-06-18T19:51:20Z DBG WebSocket Send event=room id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"id":"loving-blue-fox","mode":"","users":[{"id":"d19hhcpon2ajqasosc50","name":"Powerful Chimpanzee","owner":true,"streaming":false,"you":true},{"id":"d19hhe1on2ajqasosc5g","name":"Agreeable Lion","owner":false,"streaming":false,"you":false}]}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Receive event=*ws.StartShare id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=clientsession id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"iceServers":[{"credential":"HrE%^OrLp7Eyms=kw$3t","urls":["turn:my-server-ip:3478","turn:my-server-ip:3478?transport=tcp"],"username":"d19hhg1on2ajqasosc60client"}],"id":"d19hhg1on2ajqasosc60","peer":"d19hhcpon2ajqasosc50"}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=hostsession id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"iceServers":[{"credential":"%>*PzIjquqL%0c>#Ljz\\","urls":["turn:my-server-ip:3478","turn:my-server-ip:3478?transport=tcp"],"username":"d19hhg1on2ajqasosc60host"}],"id":"d19hhg1on2ajqasosc60","peer":"d19hhe1on2ajqasosc5g"}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=room id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"id":"loving-blue-fox","mode":"","users":[{"id":"d19hhcpon2ajqasosc50","name":"Powerful Chimpanzee","owner":true,"streaming":true,"you":false},{"id":"d19hhe1on2ajqasosc5g","name":"Agreeable Lion","owner":false,"streaming":false,"you":true}]}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=room id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"id":"loving-blue-fox","mode":"","users":[{"id":"d19hhcpon2ajqasosc50","name":"Powerful Chimpanzee","owner":true,"streaming":true,"you":true},{"id":"d19hhe1on2ajqasosc5g","name":"Agreeable Lion","owner":false,"streaming":false,"you":false}]}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Receive event=*ws.HostOffer id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"sid":"d19hhg1on2ajqasosc60","value":{"sdp":"v=0\r\no=- 6910390822932091475 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE 0\r\na=extmap-allow-mixed\r\na=msid-semantic: WMS f033c2ce-7773-43d3-a028-7ae3152ad2d0\r\nm=video 9 UDP/TLS/RTP/SAVPF 96 97 103 104 107 108 109 114 115 116 117 118 39 40 45 46 98 99 100 101 119 120 121\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:U7N2\r\na=ice-pwd:gV6Hyf/k6ZFwsjXpshPWaW62\r\na=ice-options:trickle\r\na=fingerprint:sha-256 CF:08:10:CB:71:51:F7:33:27:87:78:59:B9:50:41:0F:30:5F:37:94:82:84:5E:79:85:9C:B3:F6:DE:40:32:45\r\na=setup:actpass\r\na=mid:0\r\na=extmap:1 urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:3 urn:3gpp:video-orientation\r\na=extmap:4 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=extmap:5 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\r\na=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type\r\na=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing\r\na=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/color-space\r\na=extmap:9 urn:ietf:params:rtp-hdrext:sdes:mid\r\na=extmap:10 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\na=extmap:11 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\na=sendrecv\r\na=msid:f033c2ce-7773-43d3-a028-7ae3152ad2d0 5b2a3948-531d-4bfa-a237-dd548d201297\r\na=rtcp-mux\r\na=rtcp-rsize\r\na=rtpmap:96 VP8/90000\r\na=rtcp-fb:96 goog-remb\r\na=rtcp-fb:96 transport-cc\r\na=rtcp-fb:96 ccm fir\r\na=rtcp-fb:96 nack\r\na=rtcp-fb:96 nack pli\r\na=rtpmap:97 rtx/90000\r\na=fmtp:97 apt=96\r\na=rtpmap:103 H264/90000\r\na=rtcp-fb:103 goog-remb\r\na=rtcp-fb:103 transport-cc\r\na=rtcp-fb:103 ccm fir\r\na=rtcp-fb:103 nack\r\na=rtcp-fb:103 nack pli\r\na=fmtp:103 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\na=rtpmap:104 rtx/90000\r\na=fmtp:104 apt=103\r\na=rtpmap:107 H264/90000\r\na=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=rtcp-fb:107 ccm fir\r\na=rtcp-fb:107 nack\r\na=rtcp-fb:107 nack pli\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f\r\na=rtpmap:108 rtx/90000\r\na=fmtp:108 apt=107\r\na=rtpmap:109 H264/90000\r\na=rtcp-fb:109 goog-remb\r\na=rtcp-fb:109 transport-cc\r\na=rtcp-fb:109 ccm fir\r\na=rtcp-fb:109 nack\r\na=rtcp-fb:109 nack pli\r\na=fmtp:109 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\na=rtpmap:114 rtx/90000\r\na=fmtp:114 apt=109\r\na=rtpmap:115 H264/90000\r\na=rtcp-fb:115 goog-remb\r\na=rtcp-fb:115 transport-cc\r\na=rtcp-fb:115 ccm fir\r\na=rtcp-fb:115 nack\r\na=rtcp-fb:115 nack pli\r\na=fmtp:115 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f\r\na=rtpmap:116 rtx/90000\r\na=fmtp:116 apt=115\r\na=rtpmap:117 H264/90000\r\na=rtcp-fb:117 goog-remb\r\na=rtcp-fb:117 transport-cc\r\na=rtcp-fb:117 ccm fir\r\na=rtcp-fb:117 nack\r\na=rtcp-fb:117 nack pli\r\na=fmtp:117 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d001f\r\na=rtpmap:118 rtx/90000\r\na=fmtp:118 apt=117\r\na=rtpmap:39 H264/90000\r\na=rtcp-fb:39 goog-remb\r\na=rtcp-fb:39 transport-cc\r\na=rtcp-fb:39 ccm fir\r\na=rtcp-fb:39 nack\r\na=rtcp-fb:39 nack pli\r\na=fmtp:39 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=4d001f\r\na=rtpmap:40 rtx/90000\r\na=fmtp:40 apt=39\r\na=rtpmap:45 AV1/90000\r\na=rtcp-fb:45 goog-remb\r\na=rtcp-fb:45 transport-cc\r\na=rtcp-fb:45 ccm fir\r\na=rtcp-fb:45 nack\r\na=rtcp-fb:45 nack pli\r\na=fmtp:45 level-idx=5;profile=0;tier=0\r\na=rtpmap:46 rtx/90000\r\na=fmtp:46 apt=45\r\na=rtpmap:98 VP9/90000\r\na=rtcp-fb:98 goog-remb\r\na=rtcp-fb:98 transport-cc\r\na=rtcp-fb:98 ccm fir\r\na=rtcp-fb:98 nack\r\na=rtcp-fb:98 nack pli\r\na=fmtp:98 profile-id=0\r\na=rtpmap:99 rtx/90000\r\na=fmtp:99 apt=98\r\na=rtpmap:100 VP9/90000\r\na=rtcp-fb:100 goog-remb\r\na=rtcp-fb:100 transport-cc\r\na=rtcp-fb:100 ccm fir\r\na=rtcp-fb:100 nack\r\na=rtcp-fb:100 nack pli\r\na=fmtp:100 profile-id=2\r\na=rtpmap:101 rtx/90000\r\na=fmtp:101 apt=100\r\na=rtpmap:119 red/90000\r\na=rtpmap:120 rtx/90000\r\na=fmtp:120 apt=119\r\na=rtpmap:121 ulpfec/90000\r\na=ssrc-group:FID 200499550 2356542529\r\na=ssrc:200499550 cname:/nFdqDrTMspxZ59k\r\na=ssrc:200499550 msid:f033c2ce-7773-43d3-a028-7ae3152ad2d0 5b2a3948-531d-4bfa-a237-dd548d201297\r\na=ssrc:2356542529 cname:/nFdqDrTMspxZ59k\r\na=ssrc:2356542529 msid:f033c2ce-7773-43d3-a028-7ae3152ad2d0 5b2a3948-531d-4bfa-a237-dd548d201297\r\n","type":"offer"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=hostoffer id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"sid":"d19hhg1on2ajqasosc60","value":{"sdp":"v=0\r\no=- 6910390822932091475 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE 0\r\na=extmap-allow-mixed\r\na=msid-semantic: WMS f033c2ce-7773-43d3-a028-7ae3152ad2d0\r\nm=video 9 UDP/TLS/RTP/SAVPF 96 97 103 104 107 108 109 114 115 116 117 118 39 40 45 46 98 99 100 101 119 120 121\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:U7N2\r\na=ice-pwd:gV6Hyf/k6ZFwsjXpshPWaW62\r\na=ice-options:trickle\r\na=fingerprint:sha-256 CF:08:10:CB:71:51:F7:33:27:87:78:59:B9:50:41:0F:30:5F:37:94:82:84:5E:79:85:9C:B3:F6:DE:40:32:45\r\na=setup:actpass\r\na=mid:0\r\na=extmap:1 urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:3 urn:3gpp:video-orientation\r\na=extmap:4 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=extmap:5 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\r\na=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type\r\na=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing\r\na=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/color-space\r\na=extmap:9 urn:ietf:params:rtp-hdrext:sdes:mid\r\na=extmap:10 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\na=extmap:11 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\na=sendrecv\r\na=msid:f033c2ce-7773-43d3-a028-7ae3152ad2d0 5b2a3948-531d-4bfa-a237-dd548d201297\r\na=rtcp-mux\r\na=rtcp-rsize\r\na=rtpmap:96 VP8/90000\r\na=rtcp-fb:96 goog-remb\r\na=rtcp-fb:96 transport-cc\r\na=rtcp-fb:96 ccm fir\r\na=rtcp-fb:96 nack\r\na=rtcp-fb:96 nack pli\r\na=rtpmap:97 rtx/90000\r\na=fmtp:97 apt=96\r\na=rtpmap:103 H264/90000\r\na=rtcp-fb:103 goog-remb\r\na=rtcp-fb:103 transport-cc\r\na=rtcp-fb:103 ccm fir\r\na=rtcp-fb:103 nack\r\na=rtcp-fb:103 nack pli\r\na=fmtp:103 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\na=rtpmap:104 rtx/90000\r\na=fmtp:104 apt=103\r\na=rtpmap:107 H264/90000\r\na=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=rtcp-fb:107 ccm fir\r\na=rtcp-fb:107 nack\r\na=rtcp-fb:107 nack pli\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f\r\na=rtpmap:108 rtx/90000\r\na=fmtp:108 apt=107\r\na=rtpmap:109 H264/90000\r\na=rtcp-fb:109 goog-remb\r\na=rtcp-fb:109 transport-cc\r\na=rtcp-fb:109 ccm fir\r\na=rtcp-fb:109 nack\r\na=rtcp-fb:109 nack pli\r\na=fmtp:109 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\na=rtpmap:114 rtx/90000\r\na=fmtp:114 apt=109\r\na=rtpmap:115 H264/90000\r\na=rtcp-fb:115 goog-remb\r\na=rtcp-fb:115 transport-cc\r\na=rtcp-fb:115 ccm fir\r\na=rtcp-fb:115 nack\r\na=rtcp-fb:115 nack pli\r\na=fmtp:115 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f\r\na=rtpmap:116 rtx/90000\r\na=fmtp:116 apt=115\r\na=rtpmap:117 H264/90000\r\na=rtcp-fb:117 goog-remb\r\na=rtcp-fb:117 transport-cc\r\na=rtcp-fb:117 ccm fir\r\na=rtcp-fb:117 nack\r\na=rtcp-fb:117 nack pli\r\na=fmtp:117 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d001f\r\na=rtpmap:118 rtx/90000\r\na=fmtp:118 apt=117\r\na=rtpmap:39 H264/90000\r\na=rtcp-fb:39 goog-remb\r\na=rtcp-fb:39 transport-cc\r\na=rtcp-fb:39 ccm fir\r\na=rtcp-fb:39 nack\r\na=rtcp-fb:39 nack pli\r\na=fmtp:39 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=4d001f\r\na=rtpmap:40 rtx/90000\r\na=fmtp:40 apt=39\r\na=rtpmap:45 AV1/90000\r\na=rtcp-fb:45 goog-remb\r\na=rtcp-fb:45 transport-cc\r\na=rtcp-fb:45 ccm fir\r\na=rtcp-fb:45 nack\r\na=rtcp-fb:45 nack pli\r\na=fmtp:45 level-idx=5;profile=0;tier=0\r\na=rtpmap:46 rtx/90000\r\na=fmtp:46 apt=45\r\na=rtpmap:98 VP9/90000\r\na=rtcp-fb:98 goog-remb\r\na=rtcp-fb:98 transport-cc\r\na=rtcp-fb:98 ccm fir\r\na=rtcp-fb:98 nack\r\na=rtcp-fb:98 nack pli\r\na=fmtp:98 profile-id=0\r\na=rtpmap:99 rtx/90000\r\na=fmtp:99 apt=98\r\na=rtpmap:100 VP9/90000\r\na=rtcp-fb:100 goog-remb\r\na=rtcp-fb:100 transport-cc\r\na=rtcp-fb:100 ccm fir\r\na=rtcp-fb:100 nack\r\na=rtcp-fb:100 nack pli\r\na=fmtp:100 profile-id=2\r\na=rtpmap:101 rtx/90000\r\na=fmtp:101 apt=100\r\na=rtpmap:119 red/90000\r\na=rtpmap:120 rtx/90000\r\na=fmtp:120 apt=119\r\na=rtpmap:121 ulpfec/90000\r\na=ssrc-group:FID 200499550 2356542529\r\na=ssrc:200499550 cname:/nFdqDrTMspxZ59k\r\na=ssrc:200499550 msid:f033c2ce-7773-43d3-a028-7ae3152ad2d0 5b2a3948-531d-4bfa-a237-dd548d201297\r\na=ssrc:2356542529 cname:/nFdqDrTMspxZ59k\r\na=ssrc:2356542529 msid:f033c2ce-7773-43d3-a028-7ae3152ad2d0 5b2a3948-531d-4bfa-a237-dd548d201297\r\n","type":"offer"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Receive event=*ws.HostICE id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:1421437942 1 udp 2113937151 d0bd92f5-0033-42ac-aaf1-23d3dfae2e06.local 39185 typ host generation 0 ufrag U7N2 network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"U7N2"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=hostice id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:1421437942 1 udp 2113937151 d0bd92f5-0033-42ac-aaf1-23d3dfae2e06.local 39185 typ host generation 0 ufrag U7N2 network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"U7N2"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Receive event=*ws.ClientAnswer id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"sid":"d19hhg1on2ajqasosc60","value":{"sdp":"v=0\r\no=- 1090887452706864706 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE 0\r\na=extmap-allow-mixed\r\na=msid-semantic: WMS\r\nm=video 9 UDP/TLS/RTP/SAVPF 96 97 103 104 107 108 109 114 115 116 117 118 39 40 45 46 98 99 100 101 119 120 121\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:m6WQ\r\na=ice-pwd:sz/iqJ/DS2gTEM9axVGGCy6u\r\na=ice-options:trickle\r\na=fingerprint:sha-256 88:BE:F6:08:B0:C1:14:C1:19:67:C6:E0:90:D4:56:FB:02:FE:42:B7:C1:84:08:B0:FF:16:2F:06:26:94:45:14\r\na=setup:active\r\na=mid:0\r\na=extmap:1 urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:3 urn:3gpp:video-orientation\r\na=extmap:4 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=extmap:5 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\r\na=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type\r\na=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing\r\na=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/color-space\r\na=extmap:9 urn:ietf:params:rtp-hdrext:sdes:mid\r\na=extmap:10 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\na=extmap:11 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\na=recvonly\r\na=rtcp-mux\r\na=rtcp-rsize\r\na=rtpmap:96 VP8/90000\r\na=rtcp-fb:96 goog-remb\r\na=rtcp-fb:96 transport-cc\r\na=rtcp-fb:96 ccm fir\r\na=rtcp-fb:96 nack\r\na=rtcp-fb:96 nack pli\r\na=rtpmap:97 rtx/90000\r\na=fmtp:97 apt=96\r\na=rtpmap:103 H264/90000\r\na=rtcp-fb:103 goog-remb\r\na=rtcp-fb:103 transport-cc\r\na=rtcp-fb:103 ccm fir\r\na=rtcp-fb:103 nack\r\na=rtcp-fb:103 nack pli\r\na=fmtp:103 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\na=rtpmap:104 rtx/90000\r\na=fmtp:104 apt=103\r\na=rtpmap:107 H264/90000\r\na=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=rtcp-fb:107 ccm fir\r\na=rtcp-fb:107 nack\r\na=rtcp-fb:107 nack pli\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f\r\na=rtpmap:108 rtx/90000\r\na=fmtp:108 apt=107\r\na=rtpmap:109 H264/90000\r\na=rtcp-fb:109 goog-remb\r\na=rtcp-fb:109 transport-cc\r\na=rtcp-fb:109 ccm fir\r\na=rtcp-fb:109 nack\r\na=rtcp-fb:109 nack pli\r\na=fmtp:109 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\na=rtpmap:114 rtx/90000\r\na=fmtp:114 apt=109\r\na=rtpmap:115 H264/90000\r\na=rtcp-fb:115 goog-remb\r\na=rtcp-fb:115 transport-cc\r\na=rtcp-fb:115 ccm fir\r\na=rtcp-fb:115 nack\r\na=rtcp-fb:115 nack pli\r\na=fmtp:115 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f\r\na=rtpmap:116 rtx/90000\r\na=fmtp:116 apt=115\r\na=rtpmap:117 H264/90000\r\na=rtcp-fb:117 goog-remb\r\na=rtcp-fb:117 transport-cc\r\na=rtcp-fb:117 ccm fir\r\na=rtcp-fb:117 nack\r\na=rtcp-fb:117 nack pli\r\na=fmtp:117 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d001f\r\na=rtpmap:118 rtx/90000\r\na=fmtp:118 apt=117\r\na=rtpmap:39 H264/90000\r\na=rtcp-fb:39 goog-remb\r\na=rtcp-fb:39 transport-cc\r\na=rtcp-fb:39 ccm fir\r\na=rtcp-fb:39 nack\r\na=rtcp-fb:39 nack pli\r\na=fmtp:39 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=4d001f\r\na=rtpmap:40 rtx/90000\r\na=fmtp:40 apt=39\r\na=rtpmap:45 AV1/90000\r\na=rtcp-fb:45 goog-remb\r\na=rtcp-fb:45 transport-cc\r\na=rtcp-fb:45 ccm fir\r\na=rtcp-fb:45 nack\r\na=rtcp-fb:45 nack pli\r\na=rtpmap:46 rtx/90000\r\na=fmtp:46 apt=45\r\na=rtpmap:98 VP9/90000\r\na=rtcp-fb:98 goog-remb\r\na=rtcp-fb:98 transport-cc\r\na=rtcp-fb:98 ccm fir\r\na=rtcp-fb:98 nack\r\na=rtcp-fb:98 nack pli\r\na=fmtp:98 profile-id=0\r\na=rtpmap:99 rtx/90000\r\na=fmtp:99 apt=98\r\na=rtpmap:100 VP9/90000\r\na=rtcp-fb:100 goog-remb\r\na=rtcp-fb:100 transport-cc\r\na=rtcp-fb:100 ccm fir\r\na=rtcp-fb:100 nack\r\na=rtcp-fb:100 nack pli\r\na=fmtp:100 profile-id=2\r\na=rtpmap:101 rtx/90000\r\na=fmtp:101 apt=100\r\na=rtpmap:119 red/90000\r\na=rtpmap:120 rtx/90000\r\na=fmtp:120 apt=119\r\na=rtpmap:121 ulpfec/90000\r\n","type":"answer"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=clientanswer id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"sid":"d19hhg1on2ajqasosc60","value":{"sdp":"v=0\r\no=- 1090887452706864706 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\na=group:BUNDLE 0\r\na=extmap-allow-mixed\r\na=msid-semantic: WMS\r\nm=video 9 UDP/TLS/RTP/SAVPF 96 97 103 104 107 108 109 114 115 116 117 118 39 40 45 46 98 99 100 101 119 120 121\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4 0.0.0.0\r\na=ice-ufrag:m6WQ\r\na=ice-pwd:sz/iqJ/DS2gTEM9axVGGCy6u\r\na=ice-options:trickle\r\na=fingerprint:sha-256 88:BE:F6:08:B0:C1:14:C1:19:67:C6:E0:90:D4:56:FB:02:FE:42:B7:C1:84:08:B0:FF:16:2F:06:26:94:45:14\r\na=setup:active\r\na=mid:0\r\na=extmap:1 urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:3 urn:3gpp:video-orientation\r\na=extmap:4 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=extmap:5 http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\r\na=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/video-content-type\r\na=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timing\r\na=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/color-space\r\na=extmap:9 urn:ietf:params:rtp-hdrext:sdes:mid\r\na=extmap:10 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\na=extmap:11 urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\na=recvonly\r\na=rtcp-mux\r\na=rtcp-rsize\r\na=rtpmap:96 VP8/90000\r\na=rtcp-fb:96 goog-remb\r\na=rtcp-fb:96 transport-cc\r\na=rtcp-fb:96 ccm fir\r\na=rtcp-fb:96 nack\r\na=rtcp-fb:96 nack pli\r\na=rtpmap:97 rtx/90000\r\na=fmtp:97 apt=96\r\na=rtpmap:103 H264/90000\r\na=rtcp-fb:103 goog-remb\r\na=rtcp-fb:103 transport-cc\r\na=rtcp-fb:103 ccm fir\r\na=rtcp-fb:103 nack\r\na=rtcp-fb:103 nack pli\r\na=fmtp:103 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\na=rtpmap:104 rtx/90000\r\na=fmtp:104 apt=103\r\na=rtpmap:107 H264/90000\r\na=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=rtcp-fb:107 ccm fir\r\na=rtcp-fb:107 nack\r\na=rtcp-fb:107 nack pli\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f\r\na=rtpmap:108 rtx/90000\r\na=fmtp:108 apt=107\r\na=rtpmap:109 H264/90000\r\na=rtcp-fb:109 goog-remb\r\na=rtcp-fb:109 transport-cc\r\na=rtcp-fb:109 ccm fir\r\na=rtcp-fb:109 nack\r\na=rtcp-fb:109 nack pli\r\na=fmtp:109 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\na=rtpmap:114 rtx/90000\r\na=fmtp:114 apt=109\r\na=rtpmap:115 H264/90000\r\na=rtcp-fb:115 goog-remb\r\na=rtcp-fb:115 transport-cc\r\na=rtcp-fb:115 ccm fir\r\na=rtcp-fb:115 nack\r\na=rtcp-fb:115 nack pli\r\na=fmtp:115 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f\r\na=rtpmap:116 rtx/90000\r\na=fmtp:116 apt=115\r\na=rtpmap:117 H264/90000\r\na=rtcp-fb:117 goog-remb\r\na=rtcp-fb:117 transport-cc\r\na=rtcp-fb:117 ccm fir\r\na=rtcp-fb:117 nack\r\na=rtcp-fb:117 nack pli\r\na=fmtp:117 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d001f\r\na=rtpmap:118 rtx/90000\r\na=fmtp:118 apt=117\r\na=rtpmap:39 H264/90000\r\na=rtcp-fb:39 goog-remb\r\na=rtcp-fb:39 transport-cc\r\na=rtcp-fb:39 ccm fir\r\na=rtcp-fb:39 nack\r\na=rtcp-fb:39 nack pli\r\na=fmtp:39 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=4d001f\r\na=rtpmap:40 rtx/90000\r\na=fmtp:40 apt=39\r\na=rtpmap:45 AV1/90000\r\na=rtcp-fb:45 goog-remb\r\na=rtcp-fb:45 transport-cc\r\na=rtcp-fb:45 ccm fir\r\na=rtcp-fb:45 nack\r\na=rtcp-fb:45 nack pli\r\na=rtpmap:46 rtx/90000\r\na=fmtp:46 apt=45\r\na=rtpmap:98 VP9/90000\r\na=rtcp-fb:98 goog-remb\r\na=rtcp-fb:98 transport-cc\r\na=rtcp-fb:98 ccm fir\r\na=rtcp-fb:98 nack\r\na=rtcp-fb:98 nack pli\r\na=fmtp:98 profile-id=0\r\na=rtpmap:99 rtx/90000\r\na=fmtp:99 apt=98\r\na=rtpmap:100 VP9/90000\r\na=rtcp-fb:100 goog-remb\r\na=rtcp-fb:100 transport-cc\r\na=rtcp-fb:100 ccm fir\r\na=rtcp-fb:100 nack\r\na=rtcp-fb:100 nack pli\r\na=fmtp:100 profile-id=2\r\na=rtpmap:101 rtx/90000\r\na=fmtp:101 apt=100\r\na=rtpmap:119 red/90000\r\na=rtpmap:120 rtx/90000\r\na=fmtp:120 apt=119\r\na=rtpmap:121 ulpfec/90000\r\n","type":"answer"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Receive event=*ws.ClientICE id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:2800588145 1 udp 2113937151 a265c017-7bfc-415e-ab8b-4c333522691d.local 42794 typ host generation 0 ufrag m6WQ network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"m6WQ"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=clientice id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:2800588145 1 udp 2113937151 a265c017-7bfc-415e-ab8b-4c333522691d.local 42794 typ host generation 0 ufrag m6WQ network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"m6WQ"}}
screego-1  | 2025-06-18T19:51:28Z DBG TURN authenticated addr=my-home-ip:36364 realm=screego
screego-1  | 2025-06-18T19:51:28Z DBG TURN allocated addr=[::]:50153 relayaddr=my-server-ip:50153
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Receive event=*ws.HostICE id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:3594545945 1 udp 16785407 my-server-ip 50153 typ relay raddr my-home-ip rport 36364 generation 0 ufrag U7N2 network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"U7N2"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=hostice id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:3594545945 1 udp 16785407 my-server-ip 50153 typ relay raddr my-home-ip rport 36364 generation 0 ufrag U7N2 network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"U7N2"}}
screego-1  | 2025-06-18T19:51:28Z DBG TURN authenticated addr=remote-pc-ip-address:32886 realm=screego
screego-1  | 2025-06-18T19:51:28Z DBG TURN allocated addr=[::]:50106 relayaddr=my-server-ip:50106
screego-1  | 2025-06-18T19:51:28Z DBG TURN authenticated addr=remote-pc-ip-address:32886 realm=screego
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Receive event=*ws.ClientICE id=d19hhe1on2ajqasosc5g ip=remote-pc-ip-address payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:1500689902 1 udp 16785407 my-server-ip 50106 typ relay raddr remote-pc-ip-address rport 32886 generation 0 ufrag m6WQ network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"m6WQ"}}
screego-1  | 2025-06-18T19:51:28Z DBG WebSocket Send event=clientice id=d19hhcpon2ajqasosc50 ip=my-home-ip payload={"sid":"d19hhg1on2ajqasosc60","value":{"candidate":"candidate:1500689902 1 udp 16785407 my-server-ip 50106 typ relay raddr remote-pc-ip-address rport 32886 generation 0 ufrag m6WQ network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"m6WQ"}}
screego-1  | 2025-06-18T19:51:28Z DBG TURN authenticated addr=my-home-ip:36364 realm=screego

[jmattheis]

Hmm, this looks okay'ish, the ICE responses look suspicious as the clients don't announce their ip address only some uuid.local address. There should be something like this:

2025-06-20T19:08:54+02:00 DBG WebSocket Receive event=*ws.ClientICE id=d1apb3j5ddu941gv4r90 ip=::1 payload={"sid":"d1apb9j5ddu941gv4rag","value":{"candidate":"candidate:3975234324 1 udp 1677729535 192.168.178.2 56344 typ srflx raddr 0.0.0.0 rport 0 generation 0 ufrag cOgG network-cost 999","sdpMLineIndex":0,"sdpMid":"0","usernameFragment":"cOgG"}}
                                                                                                                                                                                                     ^^^^ see this local ip

But TURN should work regardless. "TURN authenticated" does happen so both clients reach the TURN server. Which clients are you using and what kind of network are they using? (Mobile & wifi?)

Could you check

• if it works when you specify network_mode: host in your docker-compose.yml
• if there are any errors logged in the browser console on either client when the sharing fails
• Open two tabs on the same client with http://app.screego.net/?room=myname&forceTurn=true (replace the domain with your server) and check if the screensharing works. This internally forces the usage of turn.

[nware-lab]

Clients I use:
My desktop (wired)
My phone (wireless)
A chromium instance on a kasm server on a remote site a few 100Km away (wired)
when using app.screego.net these 3 work perfectly

atm network_mode: host makes my Nginx not work (I'll look further into it)

But I can add that i noticed this error in the browser console off the client that should see the video feed.
Doesnt show up all the time, and the forceTurn=true setting has no influence
Could not play main video DOMException: The play() request was interrupted because the media was removed from the document. https://goo.gl/LdLk22
after some extra testing i get the same log message on app.screego.net

So no behaviour changes when using forceTurn=true or not.

After messing around with making Nginx work with network_mode: host this seemed to have "fixed" the problem.
But for me that makes it more confusing on why it doesn't work with the normal network_mode.

[jmattheis]

So no behaviour changes when using forceTurn=true or not.

Have you checked this on devices that previously worked? I'd expect this would break.

---

I'm able to reproduce your problem when not using network_mode: host and having two browser windows open on the same device both having an url with forceTurn=true. When using the docker-compose from the server locally, it does work fine.

Without network_mode: host, docker proxies the traffic to the container traffic via a binary called docker-proxy. I'd guess this breaks something, but this requires further debugging which will take some time. In the meantime I'll add to the docs that screego may not work without network_mode: host.

[dongdigua]

forceTurn=true is not documented? it only appears once at https://github.com/screego/server/blame/f946cee83b61d9f47c2f1c2238fb31f4042b628a/ui/src/useRoom.ts#L40

[jmattheis]

@dongdigua yes, it's a internal flag for troubleshooting / testing.