<div><font color="#222222" face="arial, sans-serif"><br></font></div><div><font color="#222222" face="arial, sans-serif">How to let freeswitch send late packets? I tried in following way, but the call is missing ACK in freeswitch end when the client sent 200 OK back.</font></div>
<div><br></div><div><font color="#222222" face="arial, sans-serif">Any suggestions?</font></div><div><font color="#222222" face="arial, sans-serif"><br></font></div><div><font color="#222222" face="arial, sans-serif">The changed code is: (I simply go to sleep 1ms and then try to read again)</font></div>
<div><font color="#222222" face="arial, sans-serif"><br></font></div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)"><br>
</span></div> if (check || (bytes && !switch_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER))) {</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">if (!bytes && switch_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER)) {</span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">/* We're late! We're Late! */</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">if (!switch_test_flag(rtp_</span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">session, SWITCH_RTP_FLAG_NOBLOCK) && status == SWITCH_STATUS_BREAK) {</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">switch_cond_next();</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">continue;</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">}</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="background-color:rgb(255,255,255)"><font color="#222222" face="arial, sans-serif"><span style="white-space:pre-wrap"> </span></font><br></span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> //</span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">return_cng_frame(); <------- comment this lane and directly go to sleep and read again</span><div>
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;white-space:pre-wrap;background-color:rgb(255,255,255)">goto do_continue;</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">}</span><br style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">
<span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255);white-space:pre-wrap"> </span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)">}</span><br>
<br><div class="gmail_quote">On Wed, Feb 6, 2013 at 12:52 AM, Bing LI <span dir="ltr"><<a href="mailto:enst.bupt@gmail.com" target="_blank">enst.bupt@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr"><div>In my experience <span style="font-size:13px;font-family:arial,sans-serif">suppress_cng did work but only prevented sending CNG packet.</span><br></div><div><span style="font-family:arial,sans-serif;font-size:13px">freeswitch would ignore the late packets because it thought the cng packet had been sent out. it makes a hole in the seq number in B-leg.</span></div>
<div><font face="arial, sans-serif"><br></font></div><div><font face="arial, sans-serif">So later I modified the switch_rtp.c to change this mechanism. <br></font><div><br></div></div></div><div class="HOEnZb"><div class="h5">
<div class="gmail_extra"><br><br>
<div class="gmail_quote">On Tue, Feb 5, 2013 at 11:32 AM, Xijing Dai <span dir="ltr"><<a href="mailto:dxj19831029@gmail.com" target="_blank">dxj19831029@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">I see.</span><div><span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><br>
</span></div><div><span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"> </span><div><span style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">I did set it suppress_cng=true, and it did not help. No difference at all.</span><div>
<font color="#222222" face="arial, sans-serif"><br></font></div><div><font color="#222222" face="arial, sans-serif">This happens inside LAN.</font></div><div><br></div><div><font color="#222222" face="arial, sans-serif">When talking about the jitter buffer, we want to enable it on client, and disable it inside freeswitch. </font></div>
<div><font color="#222222" face="arial, sans-serif">Therefore, in this case, should freeswitch do nothing?</font></div><div><font color="#222222" face="arial, sans-serif"><br></font></div><div><font color="#222222" face="arial, sans-serif"><br>
</font></div><div><font color="#222222" face="arial, sans-serif">Cheers</font></div><div><div><div><font color="#222222" face="arial, sans-serif"><br></font></div><div><font color="#222222" face="arial, sans-serif"><br>
</font></div>
<div><font color="#222222" face="arial, sans-serif"><br></font><br><div class="gmail_quote">On Tue, Feb 5, 2013 at 11:35 PM, Anthony Minessale <span dir="ltr"><<a href="mailto:anthony.minessale@gmail.com" target="_blank">anthony.minessale@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Don't negotiate CNG in the SDP and it won't use it or disable it with suppress_cng=true in your channel or global vars.<div>
<br></div></div><div class="gmail_extra"><div><div><br><br><div class="gmail_quote">On Tue, Feb 5, 2013 at 4:32 AM, Steven Ayre <span dir="ltr"><<a href="mailto:steveayre@gmail.com" target="_blank">steveayre@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Because if a RTP packet is due and hasn't arrived yet you need something to play. Audio isn't like TCP where you dropped packets can be retransmitted, if it hasn't arrived by the time you want to play it it's too late and you have to play silence to handle it.<div>
<br></div><div>Your audio problems are more likely due to packet loss or jitter which is why the RTP packet is overdue, not the CNG itself.</div><div><br></div><div>It jitter's the problem enabling the jitterbuffer might help (at the expense of increased lag). If loss is the problem there's no way to handle that except as silence for the missing interval, you need to fix whatever is causing the loss.</div>
<div><br></div><div>-Steve</div><div><br></div><div><br><div class="gmail_quote"><div><div>On 5 February 2013 10:23, Xijing Dai <span dir="ltr"><<a href="mailto:dxj19831029@gmail.com" target="_blank">dxj19831029@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div>Hey all,<div><br></div><div><br></div><div>Inside code</div><div><br></div><div>switch_rtp.c file:</div>
<div><br></div>
<blockquote> static int rtp_common_read(switch_rtp_t *rtp_session, switch_payload_t *payload_type, switch_frame_flag_t *flags, switch_io_flag_t io_flags)<br>
................<br> if (check || (bytes && !switch_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER))) {<br><span style="white-space:pre-wrap"> </span>if (!bytes && switch_test_flag(rtp_session, SWITCH_RTP_FLAG_USE_TIMER)) {<span style="white-space:pre-wrap"> </span>/* We're late! We're Late! */<br>
<span style="white-space:pre-wrap"> </span>if (!switch_test_flag(rtp_session, SWITCH_RTP_FLAG_NOBLOCK) && status == SWITCH_STATUS_BREAK) {<br><span style="white-space:pre-wrap"> </span>switch_cond_next();<br>
<span style="white-space:pre-wrap"> </span>continue;<br><span style="white-space:pre-wrap"> </span>}<br><span style="white-space:pre-wrap"> <br></span><span style="white-space:pre-wrap"> </span>return_cng_frame(); <------- this lane to return cng frame if late.<br>
<span style="white-space:pre-wrap"> </span>}<br><span style="white-space:pre-wrap"> </span>}<br><br><br></blockquote>Could someone explain why we want to return cng frame when package is late? this is caused for me to hear very bad noise audio.<div>
<br></div><div>Can I disable return CNG frame?<br><div><br></div><div><br></div><div>Cheers<br><blockquote><br><br><br><br></blockquote></div></div>
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