First steps with WebRTC

jjacquesmuller · November 5, 2021, 8:44pm

Hello,
I’m trying to set up my first WebRTC client (sipml5).
I followed the instructions, my Asterisk test lab is working with PJSIP and softphone on my local network.
So there is my config :

http.conf :

[general]
enabled=yes
bindaddr=0.0.0.0
bindport=8088
tlsenable=yes
tlsbindaddr=0.0.0.0:8089
tlscertfile=/etc/asterisk/keys/asterisk.crt
tlsprivatekey=/etc/asterisk/keys/asterisk.key

pjsip.conf :

[transport-wss]
type=transport
protocol=wss
bind=0.0.0.0:8089
local_net = 192.168.1.1/32
external_media_address = 82.65.147.120
external_signaling_address = 82.65.147.120
allow_reload=yes

endpoint / auth / aor :

; Declaration
[1067]

type=auth
auth_type=userpass
; Mot de passe
password=xxxxxxxxxxxxx
; User declaration
username=1067

; Affectation
[1067]

type=endpoint
trust_id_inbound=yes
rtp_keepalive=1
webrtc=yes
transport=transport-wss
dtls_auto_generate_cer=yes
; Authentification
auth=1067
; aors
aors=1067
; Contexte
context=Streamer
message_context = instant-message
disallow=all
allow=g722
allow=ulaw
allow=alaw
call_group=1
pickup_group=1
rewrite_contact = yes
direct_media = no
force_rport = yes
rtp_symmetric = yes
; CallerID
callerid=0033743358246


; Assignation
[1067]

type=aor
max_contacts=10

I generated a self-signed certificate for my local IP with :

contrib/scripts/ast_tls_cert -C 192.168.1.60 -O "test" -b 2048 -d /etc/asterisk/keys

I installed sipml5 on the server , and when I try to follow the tutorial :
https://wiki.asterisk.org/wiki/display/AST/WebRTC+tutorial+using+SIPML5
I get this error in the CLI :

[Nov  5 21:43:51] ERROR[4256]: iostream.c:647 ast_iostream_start_tls: Problem setting up ssl connection: error:00000001:lib(0):func(0):reason(1), Internal SSL error
[Nov  5 21:43:51] ERROR[4256]: tcptls.c:179 handle_tcptls_connection: Unable to set up ssl connection with peer '192.168.1.50:64498'
[Nov  5 21:43:51] ERROR[4256]: iostream.c:552 ast_iostream_close: SSL_shutdown() failed: error:00000001:lib(0):func(0):reason(1), Internal SSL error

Am I doing something wrong ?
Thanks

david551 · November 5, 2021, 9:40pm

That’s obviously wrong, although, unless you are accessing something on the real local net, probably doesn’t matter. Oops you are!

On the other hand, I thought the whole of the directly attached networks were inferred as local.

jjacquesmuller · November 5, 2021, 9:52pm

Yes I am working only on my local network with a debian VM for the webRTC test lab.
But I don’t think it’s a network problem, the error message is about SSL

jjacquesmuller · November 6, 2021, 11:31am

So I decided to use a subdomain and a DigiCert certificate.
But I have another issue now. Calls are working well, but with horrible quality and a delay of 1 minute on the call initiation.

Here is what I get in the CLI :

[Nov  6 12:21:19] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:20] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:20] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:20] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:20] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:20] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:20] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:20] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:21] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:21] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:21] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:21] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:21] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream
[Nov  6 12:21:21] ERROR[6197][C-00000001]: codec_opus.c:503 opus_samples_count: Opus: Unable to parse packet for number of samples: corrupted stream

I use asterisk 16.22.0 and codec_opus.

There are my files again (i followed the tutorial step by step) :

endpoint :

[1067]
type=aor
max_contacts=5
remove_existing=yes
  
[1067]
type=auth
auth_type=userpass
username=1067
password=xxxxxxx
 
[1067]
type=endpoint
aors=1067
auth=1067
dtls_auto_generate_cert=yes
webrtc=yes
context=Streamer
disallow=all
allow=opus,ulaw
callerid=0033674114870

transport :

[transport-wss]
type=transport
protocol=wss
bind=0.0.0.0

david551 · November 6, 2021, 11:48am

I’m going to leave this for someone who is current and experienced on WebRTC. However, from what I’ve heard, that tutorial may be doing you a disservice by suggesting that you can succeed by just using three year old step by step guides.

jjacquesmuller · November 6, 2021, 12:03pm

Thanks for trying to help me
Will search for other guides. Anyone have idea about the error ?

jjacquesmuller · November 6, 2021, 4:10pm

Tried another webRTC phone and it works. But the audio is not exploitable on the phone, we hear “pppppppppp”. On the browser it’s working. If I call another extension (g722 codecà, it works perfectly.

Here are the RTP logs :

Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000230, ts 036800, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003309, ts 2450018680, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001502, ts 948686872, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001502, ts 948686872, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033481, ts 066112, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033482, ts 066112, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001503, ts 948687032, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001503, ts 948687032, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033483, ts 066272, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033484, ts 066272, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000231, ts 036960, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003310, ts 2450018840, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000232, ts 037120, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003311, ts 2450019000, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001504, ts 948687192, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001504, ts 948687192, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033485, ts 066432, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033486, ts 066432, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001505, ts 948687352, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001505, ts 948687352, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033487, ts 066592, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033488, ts 066592, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000233, ts 037280, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003312, ts 2450019160, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000234, ts 037440, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003313, ts 2450019320, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001506, ts 948687512, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001506, ts 948687512, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033489, ts 066752, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033490, ts 066752, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001507, ts 948687672, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001507, ts 948687672, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033491, ts 066912, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033492, ts 066912, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000235, ts 037600, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003314, ts 2450019480, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000236, ts 037760, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003315, ts 2450019640, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001508, ts 948687832, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001508, ts 948687832, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033493, ts 067072, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033494, ts 067072, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001509, ts 948687992, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001509, ts 948687992, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033495, ts 067232, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033496, ts 067232, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000237, ts 037920, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003316, ts 2450019800, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000238, ts 038080, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003317, ts 2450019960, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001510, ts 948688152, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001510, ts 948688152, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033497, ts 067392, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033498, ts 067392, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001511, ts 948688312, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001511, ts 948688312, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033499, ts 067552, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033500, ts 067552, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000239, ts 038240, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003318, ts 2450020120, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000240, ts 038400, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003319, ts 2450020280, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001512, ts 948688472, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001512, ts 948688472, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033501, ts 067712, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033502, ts 067712, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001513, ts 948688632, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001513, ts 948688632, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033503, ts 067872, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033504, ts 067872, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000241, ts 038560, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003320, ts 2450020440, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000242, ts 038720, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003321, ts 2450020600, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001514, ts 948688792, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001514, ts 948688792, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033505, ts 068032, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033506, ts 068032, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000243, ts 038880, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003322, ts 2450020760, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001515, ts 948688952, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001515, ts 948688952, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033507, ts 068192, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033508, ts 068192, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001516, ts 948689112, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001516, ts 948689112, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033509, ts 068352, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033510, ts 068352, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000244, ts 039040, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003323, ts 2450020920, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000245, ts 039200, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003324, ts 2450021080, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001517, ts 948689272, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001517, ts 948689272, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033511, ts 068512, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033512, ts 068512, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001518, ts 948689432, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001518, ts 948689432, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033513, ts 068672, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033514, ts 068672, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000246, ts 039360, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003325, ts 2450021240, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000247, ts 039520, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003326, ts 2450021400, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001519, ts 948689592, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001519, ts 948689592, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033515, ts 068832, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033516, ts 068832, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001520, ts 948689752, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001520, ts 948689752, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033517, ts 068992, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033518, ts 068992, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000248, ts 039680, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003327, ts 2450021560, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000249, ts 039840, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003328, ts 2450021720, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001521, ts 948689912, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001521, ts 948689912, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033519, ts 069152, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033520, ts 069152, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001522, ts 948690072, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001522, ts 948690072, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033521, ts 069312, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033522, ts 069312, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000250, ts 040000, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003329, ts 2450021880, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001523, ts 948690232, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001523, ts 948690232, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033523, ts 069472, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033524, ts 069472, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000251, ts 040160, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003330, ts 2450022040, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001524, ts 948690392, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001524, ts 948690392, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033525, ts 069632, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033526, ts 069632, len 000170)
Got  RTP packet from    208.100.60.34:19062 (type 00, seq 000252, ts 040320, len 000160)
Sent RTP packet to      192.168.1.50:58314 (via ICE) (type 09, seq 003331, ts 2450022200, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001525, ts 948690552, len 000170)
Got  RTP packet from    192.168.1.50:58314 (type 09, seq 001525, ts 948690552, len 000170)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033527, ts 069792, len 000160)
Sent RTP packet to      208.100.60.34:19062 (type 00, seq 033528, ts 069792, len 000170)

bkervaski · November 9, 2021, 4:00pm

Are you using your own STUN/TURN server? Have you tried TURN?

We built a pretty great WebRTC solution last year and ICE was the #1 thing that got in our way. Implementing our own STUN/TURN servers solved a lot of problems.

Also we’re running Asterisk 18 and using JsSip.

jjacquesmuller · November 10, 2021, 4:36pm

Thanks for your reply.
I installed ctxSIP , it works fine but it takes a lot of time to answer in Chrome/Brave browser.
The app is out to date too, i’m looking for a SIP client right now.

oliv2831 · November 17, 2021, 6:54am

@bkervaski
How did you install your STUN/TURN server ? On a VPS over the Internet, right ?
Did you use coturn or something different ?

system · December 17, 2021, 6:55am

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