I tried using s.replace to replace the control characters, but I don't think
it recognises them:
$avp(sdp) = $(avp(sdp){s.replace,#015#012,\r\n});
It's the "#015#012" which is coming from sdp_get("$avp(sdp)"); that is the
problem.
On Sunday, 21 April 2019, 20:40:34 BST, David Dean
<[email protected]> wrote:
Agreed. Unfortunately Janus doesn't accept base64 at this time.
I'll ask Lorenzo whether he can add base64 support, but in the interim I need
to find a way in Kamailio of parsing $avp(sdp) as shell escaped plain text with
the control characters replaced.
Thanks.
On Sunday, 21 April 2019, 19:21:13 BST, Alex Balashov
<[email protected]> wrote:
A common solution to these problems is to base64-encode SIP data, so as
to avoid any part of SIP grammar violating JSON encoding specs or
conflicting with a JSON delimiter.
However, I'm not sure if whatever Janus is will accept that.
On Sun, Apr 21, 2019 at 06:15:22PM +0000, David Dean wrote:
> I'm trying to send an SDP from a SIP client to Janus using JSON over HTTP.
> The problem is that Janus is erroring on the SDP content with the following
> error:
>
> JANUS HTTP: Get SDP for echo plugin: {#012 "janus": "error",#012 "error":
> {#012 "code": 454,#012 "reason": "JSON error: on line 9: control
> character 0xd near '\"v=0'"#012 }#012} Result code 200
>
> I tried using {s.escape.common} to escape any quotations, commas etc but it
> doesn't appear to replace the control characters with newlines.
> Any suggestions on how best to remove these control characters so that Janus
> will accept the SDP over JSON?
> Here is the relevant section of kamailio.cfg:
>
> # HTTP: Request SDP for echo test plugin sdp_get("$avp(sdp)");
> $var(res) = http_connect("janus",
> "/janus/$var(JANUS-ID)/$var(ECHO-ID)", "application/json", "{
> \"janus\" : \"message\", \"transaction\" : \"testtesttest99\",
> \"body\" : { \"audio\" : true }, \"jsep\" : {
> \"type\" : \"offer\", \"sdp\" :
> \"$(avp(sdp){s.escape.common})\" }}", "$avp(janus-pluginsession)");
> xlog("L_INFO", "JANUS HTTP: Get SDP for echo plugin:
> $avp(janus-pluginsession) Result code $var(res)\n");
>
>
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--
Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
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