Thanks for the hint. I've setup a TURN server and openmeetings seems to use it.
The log of the TURN server show the following entries:

...
session 002000000000000002: realm <myrealm> user <someuser>: incoming packet CREATE_PERMISSION processed, success session 001000000000000001: realm <myrealm> user <>: incoming packet message processed, error 401: Unauthorized
...
check_stun_auth: Cannot find credentials of user <1588346030:someuser>
...

What i've done so far is:
- set the Environment Variables TURN_URL, TURN_USER, TURN_PASS
- configured turnURL in /etc/kurento/modules/kurento/WebRtcEndpoint.conf.ini

Is there some other place i have to conigure something? I'm wondering about the empty user und the user the numbers in front.

Kinds Regards
Fabian

Am 01.05.2020 um 14:11 schrieb Maxim Solodovnik:
You need to setup TURN server

On Fri, May 1, 2020, 18:54 Fabian Kopatschek <[email protected] <mailto:[email protected]>> wrote:

    Hi everybody,

    i'm facing a reconnection loop in my meeting rooms. On the lower
    right
    corner of the broweser the following message pops up:
    "Media server connection for user xy is failed, will try to reconnect"

    I have this setup:
    Openmeetings 5.0.0-M4 as Docker Container and nginx as reverse
    proxy. As
    browsers i've tried Chrome, Firefox and Edge.

    So the communication chain is like this:
    browser <=https=> nginx <=https=> openmeetings

    This is the logoutput from the docker logs of the openmeetings
    container
    when the reconnection happens:

    DEBUG 05-01 11:47:42.478 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"broadcastStarted","uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","sdpOffer":"v=0\r\no=-

    6125256671074174141 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0
    0\r\na=group:BUNDLE
    0 1\r\na=msid-semantic: WMS
    kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu\r\nm=audio 9
    UDP/TLS/RTP/SAVPF 111
    103 104 9 0 8 106 105 13 110 112 113 126\r\nc=IN IP4
    0.0.0.0\r\na=rtcp:9
    IN IP4
    
0.0.0.0\r\na=ice-ufrag:Xy3a\r\na=ice-pwd:rL+/Ze66uQfpKtww7wQyh2EV\r\na=ice-options:trickle\r\na=fingerprint:sha-256

    
53:61:34:03:07:37:9A:48:28:DB:95:5C:BA:21:F2:26:AB:79:B6:D9:A8:FB:1F:48:53:0F:29:60:EB:13:40:36\r\na=setup:actpass\r\na=mid:0\r\na=extmap:1

    urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\na=extmap:2
    http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:3
    
<http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time%5Cr%5Cna=extmap:3>

    
http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=extmap:4
    
<http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01%5Cr%5Cna=extmap:4>

    urn:ietf:params:rtp-hdrext:sdes:mid\r\na=extmap:5
    urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\na=extmap:6
    
urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\na=sendrecv\r\na=msid:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu

    706e78f6-ddee-4b5b-8043-7a5da49f9f9d\r\na=rtcp-mux\r\na=rtpmap:111
    opus/48000/2\r\na=rtcp-fb:111 transport-cc\r\na=fmtp:111
    minptime=10;useinbandfec=1\r\na=rtpmap:103 ISAC/16000\r\na=rtpmap:104
    ISAC/32000\r\na=rtpmap:9 G722/8000\r\na=rtpmap:0
    PCMU/8000\r\na=rtpmap:8
    PCMA/8000\r\na=rtpmap:106 CN/32000\r\na=rtpmap:105
    CN/16000\r\na=rtpmap:13 CN/8000\r\na=rtpmap:110
    telephone-event/48000\r\na=rtpmap:112
    telephone-event/32000\r\na=rtpmap:113
    telephone-event/16000\r\na=rtpmap:126
    telephone-event/8000\r\na=ssrc:219987797
    cname:o0Zi7givYp+YopVE\r\na=ssrc:219987797
    msid:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu
    706e78f6-ddee-4b5b-8043-7a5da49f9f9d\r\na=ssrc:219987797
    mslabel:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu\r\na=ssrc:219987797
    label:706e78f6-ddee-4b5b-8043-7a5da49f9f9d\r\nm=video 9
    UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 102 122 127 121 125 107 108 109
    124 120 123 119 114 115 116\r\nc=IN IP4 0.0.0.0\r\na=rtcp:9 IN IP4
    
0.0.0.0\r\na=ice-ufrag:Xy3a\r\na=ice-pwd:rL+/Ze66uQfpKtww7wQyh2EV\r\na=ice-options:trickle\r\na=fingerprint:sha-256

    
53:61:34:03:07:37:9A:48:28:DB:95:5C:BA:21:F2:26:AB:79:B6:D9:A8:FB:1F:48:53:0F:29:60:EB:13:40:36\r\na=setup:actpass\r\na=mid:1\r\na=extmap:14

    urn:ietf:params:rtp-hdrext:toffset\r\na=extmap:2
    http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\na=extmap:13
    
<http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time%5Cr%5Cna=extmap:13>

    urn:3gpp:video-orientation\r\na=extmap:3
    
http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01\r\na=extmap:12
    
<http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01%5Cr%5Cna=extmap:12>

    http://www.webrtc.org/experiments/rtp-hdrext/playout-delay\r\na=extmap:11
    
<http://www.webrtc.org/experiments/rtp-hdrext/playout-delay%5Cr%5Cna=extmap:11>

    
http://www.webrtc.org/experiments/rtp-hdrext/video-content-type\r\na=extmap:7
    
<http://www.webrtc.org/experiments/rtp-hdrext/video-content-type%5Cr%5Cna=extmap:7>

    http://www.webrtc.org/experiments/rtp-hdrext/video-timing\r\na=extmap:8
    
<http://www.webrtc.org/experiments/rtp-hdrext/video-timing%5Cr%5Cna=extmap:8>

    http://tools.ietf.org/html/draft-ietf-avtext-framemarking-07\r\na=extmap:9
    
<http://tools.ietf.org/html/draft-ietf-avtext-framemarking-07%5Cr%5Cna=extmap:9>

    http://www.webrtc.org/experiments/rtp-hdrext/color-space\r\na=extmap:4
    <http://www.webrtc.org/experiments/rtp-hdrext/color-space%5Cr%5Cna=extmap:4>

    urn:ietf:params:rtp-hdrext:sdes:mid\r\na=extmap:5
    urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id\r\na=extmap:6
    
urn:ietf:params:rtp-hdrext:sdes:repaired-rtp-stream-id\r\na=sendrecv\r\na=msid:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu

    
22eb096a-30a8-452e-a822-7c41c9442c39\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: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:102 H264/90000\r\na=rtcp-fb:102
    goog-remb\r\na=rtcp-fb:102 transport-cc\r\na=rtcp-fb:102 ccm
    fir\r\na=rtcp-fb:102 nack\r\na=rtcp-fb:102 nack pli\r\na=fmtp:102
    
level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\na=rtpmap:122

    rtx/90000\r\na=fmtp:122 apt=102\r\na=rtpmap:127
    H264/90000\r\na=rtcp-fb:127 goog-remb\r\na=rtcp-fb:127
    transport-cc\r\na=rtcp-fb:127 ccm fir\r\na=rtcp-fb:127
    nack\r\na=rtcp-fb:127 nack pli\r\na=fmtp:127
    
level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42001f\r\na=rtpmap:121

    rtx/90000\r\na=fmtp:121 apt=127\r\na=rtpmap:125
    H264/90000\r\na=rtcp-fb:125 goog-remb\r\na=rtcp-fb:125
    transport-cc\r\na=rtcp-fb:125 ccm fir\r\na=rtcp-fb:125
    nack\r\na=rtcp-fb:125 nack pli\r\na=fmtp:125
    
level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\na=rtpmap:107

    rtx/90000\r\na=fmtp:107 apt=125\r\na=rtpmap:108
    H264/90000\r\na=rtcp-fb:108 goog-remb\r\na=rtcp-fb:108
    transport-cc\r\na=rtcp-fb:108 ccm fir\r\na=rtcp-fb:108
    nack\r\na=rtcp-fb:108 nack pli\r\na=fmtp:108
    
level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f\r\na=rtpmap:109

    rtx/90000\r\na=fmtp:109 apt=108\r\na=rtpmap:124
    H264/90000\r\na=rtcp-fb:124 goog-remb\r\na=rtcp-fb:124
    transport-cc\r\na=rtcp-fb:124 ccm fir\r\na=rtcp-fb:124
    nack\r\na=rtcp-fb:124 nack pli\r\na=fmtp:124
    
level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=4d0032\r\na=rtpmap:120

    rtx/90000\r\na=fmtp:120 apt=124\r\na=rtpmap:123
    H264/90000\r\na=rtcp-fb:123 goog-remb\r\na=rtcp-fb:123
    transport-cc\r\na=rtcp-fb:123 ccm fir\r\na=rtcp-fb:123
    nack\r\na=rtcp-fb:123 nack pli\r\na=fmtp:123
    
level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=640032\r\na=rtpmap:119

    rtx/90000\r\na=fmtp:119 apt=123\r\na=rtpmap:114
    red/90000\r\na=rtpmap:115 rtx/90000\r\na=fmtp:115
    apt=114\r\na=rtpmap:116 ulpfec/90000\r\na=ssrc-group:FID 3590827837
    1664219504\r\na=ssrc:3590827837
    cname:o0Zi7givYp+YopVE\r\na=ssrc:3590827837
    msid:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu
    22eb096a-30a8-452e-a822-7c41c9442c39\r\na=ssrc:3590827837
    mslabel:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu\r\na=ssrc:3590827837
    label:22eb096a-30a8-452e-a822-7c41c9442c39\r\na=ssrc:1664219504
    cname:o0Zi7givYp+YopVE\r\na=ssrc:1664219504
    msid:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu
    22eb096a-30a8-452e-a822-7c41c9442c39\r\na=ssrc:1664219504
    mslabel:kvm52h4aFVcmL8xnOqOfn36E0fmJ17XLYRhu\r\na=ssrc:1664219504
    label:22eb096a-30a8-452e-a822-7c41c9442c39\r\n"}
    DEBUG 05-01 11:47:42.479 o.a.o.c.r.KStream:291 [nio-5443-exec-1] -
    PARTICIPANT 7e406ec6-a8f3-44e5-aa1e-a07865aa75c6: Releasing listeners
    DEBUG 05-01 11:47:42.485 o.a.o.c.r.KurentoHandler:397
    [ventExec-e2-t37]
    - Kurento::ObjectCreated -> [RemoteObject: type=WebRtcEndpoint
    
remoteRef=81d16937-b765-470e-90c8-b0adf831e8ac_kurento.MediaPipeline/68443640-b4df-44a6-aa25-ef740483507e_kurento.WebRtcEndpoint]
    INFO  05-01 11:47:42.532 o.a.o.c.r.KStream:162 [nio-5443-exec-1] -
    USER
    7e406ec6-a8f3-44e5-aa1e-a07865aa75c6: have started broadcasting in
    room 3
    DEBUG 05-01 11:47:42.533 o.a.o.c.r.KStream:183 [nio-5443-exec-1] -
    PARTICIPANT 7e406ec6-a8f3-44e5-aa1e-a07865aa75c6: configuring loopback
    DEBUG 05-01 11:47:42.548 o.a.o.c.r.KStream:172 [nio-5443-exec-1] -
    gather candidates
    DEBUG 05-01 11:47:42.571 o.a.o.w.c.OmWebSocketPanel:88
    [io-5443-exec-13]
    - Sending WebSocket PING
    DEBUG 05-01 11:47:42.587 o.a.o.c.r.KurentoHandler:222 [Thread-238] -
    Searching for room 3
    DEBUG 05-01 11:47:42.587 o.a.o.c.r.KurentoHandler:236 [Thread-238] -
    Room 3 found!
    DEBUG 05-01 11:47:42.588 o.a.o.d.d.r.PollDao:104 [Thread-238] -  ::
    hasPoll :: 3
    DEBUG 05-01 11:47:42.589 o.a.o.d.d.r.PollDao:98 [Thread-238] -  ::
    getArchived :: 3
    DEBUG 05-01 11:47:42.590 o.a.o.c.r.KurentoHandler:222 [Thread-238] -
    Searching for room 3
    DEBUG 05-01 11:47:42.590 o.a.o.c.r.KurentoHandler:236 [Thread-238] -
    Room 3 found!
    DEBUG 05-01 11:47:42.590 o.a.o.c.r.KurentoHandler:222 [Thread-238] -
    Searching for room 3
    DEBUG 05-01 11:47:42.591 o.a.o.c.r.KurentoHandler:236 [Thread-238] -
    Room 3 found!
    DEBUG 05-01 11:47:42.606 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:3931815194

    1 udp 2122262783 2a02:908:1962:14c0:83c:24df:db0:d28c 62909 typ host
    generation 0 ufrag Xy3a network-id
    
2","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.620 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:1802479505

    1 udp 2122197247 2a02:908:1962:14c0:9527:7455:576a:bf9d 62910 typ
    host
    generation 0 ufrag Xy3a network-id
    
3","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.633 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:3424214514

    1 udp 2122129151 192.168.178.127 62911 typ host generation 0 ufrag
    Xy3a
    network-id
    
1","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.646 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:817344487

    1 udp 2122063615 172.17.156.225 62912 typ host generation 0 ufrag
    Xy3a
    network-id
    
4","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.660 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:3931815194

    1 udp 2122262783 2a02:908:1962:14c0:83c:24df:db0:d28c 62913 typ host
    generation 0 ufrag Xy3a network-id
    
2","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.674 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:1802479505

    1 udp 2122197247 2a02:908:1962:14c0:9527:7455:576a:bf9d 62914 typ
    host
    generation 0 ufrag Xy3a network-id
    
3","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.691 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:3424214514

    1 udp 2122129151 192.168.178.127 62915 typ host generation 0 ufrag
    Xy3a
    network-id
    
1","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.704 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:817344487

    1 udp 2122063615 172.17.156.225 62916 typ host generation 0 ufrag
    Xy3a
    network-id
    
4","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.716 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2782073395

    1 udp 1685921535 109.91.39.51 33699 typ srflx raddr 192.168.178.127
    rport 62911 generation 0 ufrag Xy3a network-id
    
1","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.727 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2782073395

    1 udp 1685921535 109.91.39.51 33625 typ srflx raddr 192.168.178.127
    rport 62915 generation 0 ufrag Xy3a network-id
    
1","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.739 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2765701610

    1 tcp 1518283007 2a02:908:1962:14c0:83c:24df:db0:d28c 9 typ host
    tcptype
    active generation 0 ufrag Xy3a network-id
    
2","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.764 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:636246881

    1 tcp 1518217471 2a02:908:1962:14c0:9527:7455:576a:bf9d 9 typ host
    tcptype active generation 0 ufrag Xy3a network-id
    
3","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.776 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2191171842

    1 tcp 1518149375 192.168.178.127 9 typ host tcptype active
    generation 0
    ufrag Xy3a network-id
    
1","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.788 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2117358359

    1 tcp 1518083839 172.17.156.225 9 typ host tcptype active
    generation 0
    ufrag Xy3a network-id
    
4","sdpMid":"0","sdpMLineIndex":0},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.849 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2765701610

    1 tcp 1518283007 2a02:908:1962:14c0:83c:24df:db0:d28c 9 typ host
    tcptype
    active generation 0 ufrag Xy3a network-id
    
2","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.864 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:636246881

    1 tcp 1518217471 2a02:908:1962:14c0:9527:7455:576a:bf9d 9 typ host
    tcptype active generation 0 ufrag Xy3a network-id
    
3","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.875 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2191171842

    1 tcp 1518149375 192.168.178.127 9 typ host tcptype active
    generation 0
    ufrag Xy3a network-id
    
1","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}
    DEBUG 05-01 11:47:42.885 o.a.o.c.r.StreamProcessor:87
    [nio-5443-exec-1]
    - Incoming message from user with ID '2':
    
{"type":"kurento","id":"onIceCandidate","candidate":{"candidate":"candidate:2117358359

    1 tcp 1518083839 172.17.156.225 9 typ host tcptype active
    generation 0
    ufrag Xy3a network-id
    
4","sdpMid":"1","sdpMLineIndex":1},"uid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6","luid":"7e406ec6-a8f3-44e5-aa1e-a07865aa75c6"}

    If i use the same image with a local docker container (Docker
    Desktop)
    the connection is stable.

    Thanks for your help.
    Kind Regards
    Fabian


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