WebRTC connection failed due to DTLS error

Thu Dec 24 07:48:04 UTC 2020

Thanks Anton,
Do you know if there any command in Linux to verify OpenSSL exists and running well?
In my build for openwrt Linux OpenSSL is included. 

> On 24 Dec 2020, at 10:25, Anton Pryima <zingfrid at gmail.com> wrote:
> 
> 
> Hello Vladimir.
> 
> According to both logs provided, I see an issue with OpenSSL. Please ensure that both ends have correct and working versions of OpenSSL.
> 
> Best regards,
> Anton
> 
>> On Thu, Dec 24, 2020, 08:40 Vladimir Tyutin <vladimir.tyutin at gmail.com> wrote:
>> Hello everyone,
>> Can someone help me with issue below?
>> Please review the log from previous mail and suggest what is the issue with dtls and how to fix it. 
>> 
>> Thanks,
>> Vladimir 
>> 
>>>> On 20 Dec 2020, at 09:53, Vladimir Tyutin <vladimir.tyutin at gmail.com> wrote:
>>>> 
>>> 
>>> Please find the log attached with dtls log level set to 7. 
>>> Please help me to understand what is wrong and why peer connection is failing. 
>>> 
>>> Thanks,
>>> Vladimir
>>> 
>>>> On Sun, Dec 20, 2020 at 8:56 AM Vladimir Tyutin <vladimir.tyutin at gmail.com> wrote:
>>>> 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)
>>>>> 
>>>>> > _______________________________________________
>>>>> > gstreamer-devel mailing list
>>>>> > gstreamer-devel at lists.freedesktop.org
>>>>> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>>>> 
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.freedesktop.org
>>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>>> 
>>> <log_v536.txt>
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