[asterisk-users] Asterisk 11; WEBRTC firefox nightly build fingeprint

[Mitja Kaučič]

I have problem with offer SDP that firefox nightly generates. It writes out the following error on asterisk:

WARNING[25424][C-00000004]: chan_sip.c:10936 process_sdp_a_dtls: Unsupported fingerprint hash type 'sha-2' received on dialog '2457893540'
SDP:
v=0
o=Mozilla-SIPUA 14911 0 IN IP4 xxx
s=SIP Call
t=0 0
a=ice-ufrag:de2f016f
a=ice-pwd:5f6c1d1e785108256c0e9e94d2a5ee78
a=fingerprint:sha-256 B4:C6:2A:9E:3E:C9:BD:92:13:D3:20:4A:07:B2:BB:9E:27:18:7F:B8:77:70:1D:76:49:A0:40:0F:66:1C:DD:96
m=audio 60273 RTP/SAVPF 109 0 8 101
c=IN IP4 xxx
a=rtpmap:109 opus/48000/2
a=ptime:20
a=rtpmap:0 PCMU/8000
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv

After inspecting the code in  Chan_sip.c, metode "process_sdp_a_dtls", looks like there is only sha-1 supported, but firefox uses sha-256:
if (!strcasecmp(hash, "sha-1"))
{
                dtls->set_fingerprint(instance, AST_RTP_DTLS_HASH_SHA1, value);
} else {
                ast_log(LOG_WARNING, "Unsupported fingerprint hash type '%s' received on dialog '%s'\n",hash, p->callid);
}

Is there a support for sha-256 in asterisk and is there a plan to be supported and when?

Regards Mitja

Posredovani dokument je namenjen izključno prejemniku (ali osebi, odgovorni za prenos tega sporočila prejemniku) ter osebam, ki so upravičene poznati v dokumentu vsebovane podatke na podlagi svojih pristojnosti. Posredovani dokument je dovoljeno uporabljati le za med pošiljateljem in prejemnikom dogovorjeni namen. Drugačno posredovanje, razmnoževanje oziroma uporaba dokumenta ni dovoljena. Dokument so vsi podatki v kakršnikoli obliki, ki jih vsebuje ta elektronska pošta. Če ste prejeli to sporočilo zaradi napake v naslovu ali pri prenosu sporočila, prosimo, da o tem obvestite pošiljatelja elektronskega sporočila.

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