WebRTC connection failed due to DTLS error

Tue Dec 29 17:29:53 UTC 2020

When I set log level 7 my app can’t even successfully start it’s crashed in some time even before I start webrtc. 

It’s too much for arm processor. 

As for client version. I’m not sure. I use google webrtc frameworks for Android and iOS. 
And web JS app I run in Chrome (not sure how to match Chrome version to webrtc version):
Version 87.0.4280.88 (Official Build) (x86_64)

> On 29 Dec 2020, at 20:05, Anton Pryima <zingfrid at gmail.com> wrote:
> 
> BTW, Vladimir, what gstreamer version do you have at your cleints end?
> 
> On Tue, Dec 29, 2020, 18:14 Vladimir Tyutin <vladimir.tyutin at gmail.com <mailto:vladimir.tyutin at gmail.com>> wrote:
> I could not collect log with GST_DEBUG=7 because it's too much for my camera device. 
> So I collected logs for these plugins:
> export GST_DEBUG=2,webrtc*:7,*rtp*:7,*dtls*:7
> 
> Log started from moment I ask webrtc to create SDP offer. 
> Please give me any idea what might be wrong and how to solve it. 
> 
> Thanks,
> Vladimir
> 
> On Tue, Dec 29, 2020 at 4:06 PM Vladimir Tyutin <vladimir.tyutin at gmail.com <mailto:vladimir.tyutin at gmail.com>> wrote:
> I can collect it from the moment when webrtc offer is generating. 
> 
> My architecture is:
> 1. Remote client (iOS, Android, Web) send MQTT request to camera device to generate SDP offer
> 2. Offer is generating on camera and sent to client. 
> 3. Client responds with SDP answer and webrtc session starts
> 
> I can collect log at the moment offer is generating on camera device.
> 
>> On 29 Dec 2020, at 15:56, Anton Pryima <zingfrid at gmail.com <mailto:zingfrid at gmail.com>> wrote:
>> 
>> if it is possible, it will be better to have GST_DEBUG=*:7, but cut only the connection state (you know, when it will be.... :)
>> 
>> Best regards,
>> Anton
>> 
>> On Tue, Dec 29, 2020 at 2:52 PM Vladimir Tyutin <vladimir.tyutin at gmail.com <mailto:vladimir.tyutin at gmail.com>> wrote:
>> Sure Anton,
>> I will collect it once again and attach it to the next email. 
>> 
>> I use the following command to activate logging:
>> “export GST_DEBUG=2,webrtc*:6,*dtls*:7”
>> 
>> Let me know if I need to include any other plugins to logging that might assist to analyse the issue. 
>> 
>> Thanks,
>> Vladimir 
>> 
>>> On 29 Dec 2020, at 15:22, Anton Pryima <zingfrid at gmail.com <mailto:zingfrid at gmail.com>> wrote:
>>> 
>>> Hello Vladimir,
>>> 
>>> I've tried to google your errors and it looks like that dtls is not the reason. Can you please attach the full connection log from the beginning?
>>> 
>>> Best regards,
>>> Anton.
>>> 
>>> On Tue, Dec 29, 2020 at 10:02 AM Vladimir Tyutin <vladimir.tyutin at gmail.com <mailto:vladimir.tyutin at gmail.com>> wrote:
>>> Anton, 
>>> It's difficult to do on opponent side because there I have:
>>> 1. iOS application with webrtc
>>> 2. Android application with webrtc
>>> 3. JS application with webrtc
>>> 
>>> Can you advise how to check openssl there?
>>> But all three applications worked well when I used gstreamer version 1.16.0 on my Linux camera device. 
>>> Once I updated gstreamer version to 1.18.2 on camera device something broke. 
>>> So I'm pretty sure issue on camera side but I have no idea how to understand this log with dtls error and what should I fix.
>>> 
>>> Moreover on my linux camera device I have gnutls and openssl. What is used by dtls plugin? Is it openssl or gnutls?
>>> 
>>> Thanks,
>>> Vladimir  
>>> 
>>> 
>>> 
>>> On Tue, Dec 29, 2020 at 10:49 AM Anton Pryima <zingfrid at gmail.com <mailto:zingfrid at gmail.com>> wrote:
>>> Hello Vladimir.
>>> 
>>> Try to execute 'openssl version' at the both sides and provide output.
>>> 
>>> Best regards,
>>> Anton.
>>> 
>>> On Mon, Dec 28, 2020, 22:03 Vladimir Tyutin <vladimir.tyutin at gmail.com <mailto:vladimir.tyutin at gmail.com>> wrote:
>>> I still can't resolve the issue. 
>>> Can someone with dtls plugin experience analyze the log attached and tell me what is wrong and how to fix it?
>>> 
>>> DTLS plugin exists. Openssl is available on my camera device:
>>> root at tina:~# openssl version
>>> OpenSSL 1.1.0i  14 Aug 2018
>>> 
>>> So why webrtc can't connect due to dtls issue?
>>> 
>>> Same code was working on gstreamer version 1.16.0. The issue appeared when I migrated to gstreamer version 1.18.2.
>>> 
>>> I have also updated libnice to the latest version. 
>>> 
>>> Please help me.
>>> 
>>> Thanks,
>>> Vladimir
>>> 
>>> On Thu, Dec 24, 2020 at 10:48 AM Vladimir Tyutin <vladimir.tyutin at gmail.com <mailto:vladimir.tyutin at gmail.com>> wrote:
>>> 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 <mailto: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 <mailto: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 <mailto: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 <mailto: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 <mailto: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 <mailto:gstreamer-devel at lists.freedesktop.org>
>>>>> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>>>> 
>>>>> _______________________________________________
>>>>> gstreamer-devel mailing list
>>>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>>>> <log_v536.txt>
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>>> _______________________________________________
>>>> gstreamer-devel mailing list
>>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>>> _______________________________________________
>>> gstreamer-devel mailing list
>>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>> 
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
> 
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org <mailto:gstreamer-devel at lists.freedesktop.org>
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel <https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20201229/c6bfde69/attachment-0001.htm>