WebRTC connection failed due to DTLS error
Vladimir Tyutin
vladimir.tyutin at gmail.com
Sun Dec 20 05:56:22 UTC 2020
Hi Sean,
Thanks for your reply. Could you please advise how better to collect DTLS
pcaps?
I can activate log for DTLS element like this:
export GST_DEBUG=2,dtls*:7
Is it enough?
By the way I'm trying to get webrtc working between Lindenis V536 camera
and iOS app.
They have already worked before together. On iOS side nothing is changed.
in camera side I have migrated from gstreamer version 1.16.0 to version
1.18.2.
So is there any changes in dtls side between these versions.
Any suggesting how better to debug this issue I would appreciate.
Thanks,
Vladimir
PS. I will share DTLS element logs once I collect it.
On Sun, Dec 20, 2020 at 1:19 AM Sean DuBois <sean at siobud.com> wrote:
> Hey Vladimir,
>
> Would you mind getting a pcap of your DTLS traffic? I assume you are
> getting a Close because the clients are incompatible. These are the big
> ones I have seen with DTLS.
>
> * One side doesn't have use_srtp
> * DTLS v1.0 and v1.2 mismatch
> * One side requiring Extended Master Secret, other side not supporting
> * .... lots of other crazy stuff :)
>
> thanks
>
> On Sat, Dec 19, 2020 at 04:54:58PM +0300, Vladimir Tyutin wrote:
> > Please assist me to solve the issue below.
> > I observe WebRTC peer connection can't be established.
> > In log I see some errors related to dtls. Please help me understand the
> log
> > below and get the issue resolved:
> >
> > 0:01:21.644288173 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1073:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1ab0f08 DTLS state: 0x0
> > 0:01:21.644405214 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1086:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1ab0f08 ICE state: 0x1
> > 0:01:21.644569089 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1073:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1bed050 DTLS state: 0x3
> > 0:01:21.644678631 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1086:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1bed050 ICE state: 0x2
> > 0:01:21.644764381 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1131:_collate_peer_connection_states:<webrtc>
> > ICE connection state: 0x6. DTLS connection state: 0x9
> > 0:01:21.644837673 1090 0x1b401b0 FIXME webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1189:_collate_peer_connection_states:<webrtc>
> > Undefined situation detected, returning old state
> > 0:01:21.762102246 1090 0x1f1b7b0 WARN dtlssrtpdemux
> >
> gst-plugins-bad-1.18.2/ext/dtls/gstdtlssrtpdemux.c:134:sink_chain:<dtlssrtpdemux2>
> > received invalid buffer: 1
> > 0:01:21.769914036 1090 0x1f1b7b0 ERROR dtlsconnection
> >
> gst-plugins-bad-1.18.2/ext/dtls/gstdtlsconnection.c:985:handle_error:<GstDtlsConnection at 0x1da56f0
> >
> > Fatal SSL error
> > 0:01:21.770157620 1090 0x1f1b7b0 ERROR dtlsconnection
> >
> gst-plugins-bad-1.18.2/ext/dtls/gstdtlsconnection.c:968:ssl_err_cb:<GstDtlsConnection at 0x1da56f0
> >
> > ssl error:
> > 2947169560:error:14102410:lib(20):func(258):reason(1040):NA:0:SSL alert
> > number 40
> >
> > 0:01:21.770551453 1090 0x1f1b7b0 ERROR dtlsdec
> >
> gst-plugins-bad-1.18.2/ext/dtls/gstdtlsdec.c:502:process_buffer:<dtlsdec2>
> > Error processing buffer: Fatal SSL error
> > 0:01:21.770553453 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1073:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1ab0f08 DTLS state: 0x0
> > 0:01:21.770745245 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1086:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1ab0f08 ICE state: 0x1
> > 0:01:21.770861286 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1073:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1bed050 DTLS state: 0x2
> > 0:01:21.770951120 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1086:_collate_peer_connection_states:<webrtc>
> > transceiver 0x1bed050 ICE state: 0x2
> > 0:01:21.771039203 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1131:_collate_peer_connection_states:<webrtc>
> > ICE connection state: 0x6. DTLS connection state: 0x5
> > 0:01:21.771119036 1090 0x1b401b0 TRACE webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1145:_collate_peer_connection_states:<webrtc>
> > returning failed
> > 0:01:21.771230036 1090 0x1b401b0 INFO webrtcbin
> >
> gst-plugins-bad-1.18.2/ext/webrtc/gstwebrtcbin.c:1295:_update_peer_connection_state_task:<webrtc>
> > Peer connection state change from connecting(1) to failed(4)
> > [CAMERA_DEBUG] Peer connection state: failed
> > 0:01:21.770664245 1090 0x1f1b7b0 WARN dtlsdec
> >
> gst-plugins-bad-1.18.2/ext/dtls/gstdtlsdec.c:503:process_buffer:<dtlsdec2>
> > error: Fatal SSL error
> > 0:01:21.772238245 1090 0x1f1b7b0 ERROR dtlsdec
> > gst-plugins-bad-1.18.2/ext/dtls/gstdtlsdec.c:618:sink_chain:<dtlsdec2>
> > Failed to process buffer: error
> > 0:01:21.808121366 1090 0x1f1ba90 WARN basesrc
> >
> gstreamer-1.18.2/libs/gst/base/gstbasesrc.c:3127:gst_base_src_loop:<nicesrc2>
> > error: Internal data stream error.
> > 0:01:21.808266866 1090 0x1f1ba90 WARN basesrc
> >
> gstreamer-1.18.2/libs/gst/base/gstbasesrc.c:3127:gst_base_src_loop:<nicesrc2>
> > error: streaming stopped, reason error (-5)
> > 0:01:21.809681158 1090 0x1f1ba90 WARN queue
> >
> gstreamer-1.18.2/plugins/elements/gstqueue.c:990:gst_queue_handle_sink_event:<queue8>
> > error: Internal data stream error.
> > 0:01:21.809811158 1090 0x1f1ba90 WARN queue
> >
> gstreamer-1.18.2/plugins/elements/gstqueue.c:990:gst_queue_handle_sink_event:<queue8>
> > error: streaming stopped, reason error (-5)
>
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