[Freeswitch-users] DTLS ICE and WebRTC using Freeswitch 1.6

[Michael Jerris]

Typically this happens when the traffic isn't making it back to FreeSWITCH.

On Sunday, May 31, 2015, Jon Lederman <jonlederman at gmail.com> wrote:

> Hi,
>
> We are having trouble getting WebRTC working with 1.6.  I have tracked the
> problem down to the do_dtls function in switch_rtp.c (shown partially
> below).  Two things we have noticed:
>
> 1) It appears that ice.ready and ice.ready are always 0.
> 2) DTLS negotiation never completes the handshake.
>
> Does ice have to be operative in order for dtls negotiation to proceed or
> the other way around?  What should I look for, which may prevent the ice
> setup and/or dtls handshake.
> We are running on google cloud.  Are there networking/NAT issues running
> on cloud servers that might interfere with either ICE or DTLS?
>
> Thanks in advance.
>
> -Jon
>
>
> static int do_dtls(switch_rtp_t *rtp_session, switch_dtls_t *dtls)
> {
>         int r = 0, ret = 0, len;
>         switch_size_t bytes;
>         unsigned char buf[4096] = "";
>         int ready = rtp_session->ice.ice_user ? (rtp_session->ice.rready
> && rtp_session->ice.ready) : 1;
>
>
>
>         if (!dtls->bytes && !ready) {
>
> //switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(rtp_session->session),
> SWITCH_LOG_ALERT, "Ice not ready");
>                 return 0;
>         }
>
> …
>
>
>
>
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