$ ./streaming-app
Connecting to server...
> GET  HTTP/1.1
> Soup-Debug-Timestamp: 1560953771
> Soup-Debug: SoupSession 1 (0x5592f555f220), SoupMessage 1 (0x5592f557b0e0), SoupSocket 1 (0x5592f53273f0)
> Host: localhost:8443
> Upgrade: websocket
> Connection: Upgrade
> Sec-WebSocket-Key: TuUpF3PWXS/P0bhf9MPwfg==
> Sec-WebSocket-Version: 13
> Accept-Encoding: gzip, deflate

< HTTP/1.1 101 Switching Protocols
< Soup-Debug-Timestamp: 1560953771
< Soup-Debug: SoupMessage 1 (0x5592f557b0e0)
< Upgrade: websocket
< Connection: Upgrade
< Sec-WebSocket-Accept: 53nLP0XJ98rQyqP3VI29g+Mjduo=
< Date: Wed, 19 Jun 2019 14:16:11 GMT
< Server: Python/3.7 websockets/7.0

Connected to signalling server
Registering with signalling server
Registered with server
0: direction = 2

** (streaming-app:2564): CRITICAL **: 15:16:31.987: gst_webrtc_bin_create_data_channel: assertion 'webrtc->priv->is_closed != TRUE' failed
WARNING: Could not create data channel, is usrsctp available?

(streaming-app:2564): GStreamer-CRITICAL **: 15:16:32.275: gst_mini_object_make_writable: assertion 'mini_object != NULL' failed

(streaming-app:2564): GStreamer-CRITICAL **: 15:16:32.276: gst_caps_get_size: assertion 'GST_IS_CAPS (caps)' failed
Sending offer:
v=0
o=- 5522197089501912856 0 IN IP4 0.0.0.0
s=-
t=0 0
a=ice-options:trickle
a=group:BUNDLE video0
m=video 9 UDP/TLS/RTP/SAVPF 96
c=IN IP4 0.0.0.0
a=setup:actpass
a=ice-ufrag:8u3BwT9gmhLHeynNC60hXzcWG9/qLlGq
a=ice-pwd:vuvTNUi197hQyojytSWqy1OmKAYVVwdA
a=rtcp-mux
a=rtcp-rsize
a=sendonly
a=rtpmap:96 H264/90000
a=rtcp-fb:96 nack pli
a=mid:video0
a=fingerprint:sha-256 91:DC:59:0D:07:06:1D:01:9B:F8:03:CD:A9:6A:A6:87:34:CE:BF:0E:9D:97:12:F7:CF:1D:6C:67:7D:D4:A4:DA

Received SDP answer:
v=0
o=- 1903850310278669914 2 IN IP4 127.0.0.1
s=-
t=0 0
a=group:BUNDLE video0
a=msid-semantic: WMS
m=video 36384 UDP/TLS/RTP/SAVPF 96
c=IN IP4 192.168.122.136
a=rtcp:9 IN IP4 0.0.0.0
a=candidate:2459060896 1 udp 2113937151 192.168.122.136 36384 typ host generation 0 network-cost 999
a=ice-ufrag:AYuV
a=ice-pwd:4TLsV48olBeyg01lPFxVKr4g
a=ice-options:trickle
a=fingerprint:sha-256 56:6F:31:97:92:D1:37:B4:A4:78:69:68:DB:5C:1F:68:8A:C0:F5:F9:82:A3:81:4F:DD:FC:58:A9:09:6D:DC:5C
a=setup:active
a=mid:video0
a=recvonly
a=rtcp-mux
a=rtcp-rsize
a=rtpmap:96 H264/90000
a=rtcp-fb:96 nack pli
a=fmtp:96 level-asymmetry-allowed=1;packetization-mode=0;profile-level-id=42e01f


(streaming-app:2564): GStreamer-CRITICAL **: 15:16:32.399: gst_mini_object_make_writable: assertion 'mini_object != NULL' failed

(streaming-app:2564): GStreamer-CRITICAL **: 15:16:32.399: gst_caps_get_size: assertion 'GST_IS_CAPS (caps)' failed
Sending offer:
v=0
o=- 3999019977982026598 0 IN IP4 0.0.0.0
s=-
t=0 0
a=ice-options:trickle
a=group:BUNDLE video1
m=video 9 UDP/TLS/RTP/SAVPF 96
c=IN IP4 0.0.0.0
a=setup:actpass
a=ice-ufrag:7oTiqnbYkLq8lgKMWHTjMXfEPOfnaFnx
a=ice-pwd:i5iU6X8Ylk4tm/TGaULm+cJ//EgfgJ8j
a=rtcp-mux
a=rtcp-rsize
a=sendonly
a=rtpmap:96 H264/90000
a=rtcp-fb:96 nack pli
a=mid:video1
a=fingerprint:sha-256 91:DC:59:0D:07:06:1D:01:9B:F8:03:CD:A9:6A:A6:87:34:CE:BF:0E:9D:97:12:F7:CF:1D:6C:67:7D:D4:A4:DA