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<p>Hello,</p>
<p>you can create a feature request if you like about this functionality.</p>
<p>Cheers,</p>
<p>Henning<br>
</p>
<div class="moz-cite-prefix">Am 23.04.19 um 01:01 schrieb David Dean:<br>
</div>
<blockquote type="cite" cite="mid:1438988077.2403920.1555974071168@mail.yahoo.com">
<div class="ydpc7c5274dyahoo-style-wrap" style="font-family:
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<div>Digging into this a bit deeper, I now understand the exact problem.</div>
<div><br>
</div>
<div>The issue is the difference in newlines between sdp_get output and the JSON format.</div>
<div><br>
</div>
<div><span>sdp_get returns the SDP with unix newline characters i.e. <span><span style="color: rgb(34, 34, 34);
font-family: monospace, monospace; font-size: 14px;">\r\n.</span></span></span><br>
</div>
<div><span><br>
</span></div>
<div><span>However JSON won't accept unix newlines and requires a single line output with literal \r\n instead (i.e. escaped).</span></div>
<div><span><br>
</span></div>
<div><span>So now I'm having to write the SDP into an external file using exec_msg, manipulate it with
<span>awk -v RS='\r?\n' -v ORS='\\r\\n' '1' </span>and then bring it back into Kamailio. Not nice and also not yet working correctly yet.</span></div>
<div><span><br>
</span></div>
<div><span>If there was a function within the JANSSON module to take a multi-line input (like the SDP) and convert it into a single line with literal \r\n characters ready for posting in a JSON message then that would make life much easier.</span></div>
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<div id="yahoo_quoted_6215081544" class="yahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial,
sans-serif;font-size:13px;color:#26282a;">
<div>On Sunday, 21 April 2019, 19:15:22 BST, David Dean <a class="moz-txt-link-rfc2396E" href="mailto:just_bytesize@yahoo.co.uk">
<just_bytesize@yahoo.co.uk></a> wrote: </div>
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<div id="yiv3769503626">
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<div class="yiv3769503626yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:13px;">
<div>I'm trying to send an SDP from a SIP client to Janus using JSON over HTTP.</div>
<div><br>
</div>
<div>The problem is that Janus is erroring on the SDP content with the following error:</div>
<div><br>
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<blockquote style="margin:0 0 0
40px;border:none;padding:0px;">
<div><span>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</span></div>
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<div><span>I tried using <span>{s.escape.common} to escape any quotations, commas etc but it doesn't appear to replace the control characters with newlines.</span></span></div>
<div><span><span><br>
Any suggestions on how best to remove these control characters so that Janus will accept the SDP over JSON?</span></span></div>
<div><span><span><br>
</span></span></div>
<div><span><span>Here is the relevant section of kamailio.cfg:</span></span></div>
<div><span><span><br>
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<blockquote style="margin:0 0 0
40px;border:none;padding:0px;">
<div><span><span><span>
<div># HTTP: Request SDP for echo test plugin</div>
</span></span></span></div>
<div><span><span><span>
<div> sdp_get("$avp(sdp)");</div>
</span></span></span></div>
<div><span><span><span>
<div><br>
</div>
</span></span></span></div>
<div><span><span><span>
<div> $var(res) = http_connect("janus", "/janus/$var(JANUS-ID)/$var(ECHO-ID)", "application/json", "{</div>
</span></span></span></div>
<div><span><span><span>
<div> \"janus\" : \"message\",</div>
</span></span></span></div>
<div><span><span><span>
<div> \"transaction\" : \"testtesttest99\",</div>
</span></span></span></div>
<div><span><span><span>
<div> \"body\" : {</div>
</span></span></span></div>
<div><span><span><span>
<div> \"audio\" : true</div>
</span></span></span></div>
<div><span><span><span>
<div> },</div>
</span></span></span></div>
<div><span><span><span>
<div> \"jsep\" : {</div>
</span></span></span></div>
<div><span><span><span>
<div> \"type\" : \"offer\",</div>
</span></span></span></div>
<div><span><span><span>
<div> \"sdp\" : \"$(avp(sdp){s.escape.common})\"</div>
</span></span></span></div>
<div><span><span><span>
<div> }</div>
</span></span></span></div>
<div><span><span><span>
<div>}", "$avp(janus-pluginsession)");</div>
</span></span></span></div>
<div><span><span><span>
<div> xlog("L_INFO", "JANUS HTTP: Get SDP for echo plugin: $avp(janus-pluginsession) Result code $var(res)\n");</div>
</span></span></span></div>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Henning Westerholt - <a class="moz-txt-link-freetext" href="https://skalatan.de/blog/">https://skalatan.de/blog/</a>
Kamailio services - <a class="moz-txt-link-freetext" href="https://skalatan.de/services">https://skalatan.de/services</a></pre>
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