<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;}
@page Section1
{size:612.0pt 792.0pt;
margin:70.85pt 2.0cm 2.0cm 2.0cm;}
div.Section1
{page:Section1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang=IT link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><span lang=EN-US>Hi Ross,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> we have an issue
regarding a RTSP server behind a router.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>The client is able to access the streaming
but it displays the first frame <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>after more than 12 seconds from the start
time, <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>then usually playback stops after about 40
seconds.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>If we access the streaming using
testRTSPClient, no video/audio packet is logged.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>We found a work around for the issue by
removing 'destination=%s;source=%s;' from SETUP command response for <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>UDP RTP in the file RTSPServer.cpp at line
1731 as follows:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>snprintf((char*)ourClientConnection->fResponseBuffer,
sizeof ourClientConnection->fResponseBuffer,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "RTSP/1.0
200 OK\r\n"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "CSeq:
%s\r\n"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "%s"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "Transport:
RTP/AVP;unicast;destination=%s;source=%s;client_port=%d-%d;server_port=%d-%d\r\n"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "Session:
%08X%s\r\n\r\n",<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> ourClientConnection->fCurrentCSeq,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> dateHeader(),<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> destAddrStr.val(),
sourceAddrStr.val(), ntohs(clientRTPPort.num()), ntohs(clientRTCPPort.num()),
ntohs(serverRTPPort.num()), ntohs(serverRTCPPort.num()),<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> fOurSessionId,
timeoutParameterString);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>becames<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>snprintf((char*)ourClientConnection->fResponseBuffer,
sizeof ourClientConnection->fResponseBuffer,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "RTSP/1.0
200 OK\r\n"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "CSeq:
%s\r\n"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "%s"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "Transport:
RTP/AVP;unicast;client_port=%d-%d;server_port=%d-%d\r\n"<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> "Session:
%08X%s\r\n\r\n",<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> ourClientConnection->fCurrentCSeq,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> dateHeader(),<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> ntohs(clientRTPPort.num()),
ntohs(clientRTCPPort.num()), ntohs(serverRTPPort.num()),
ntohs(serverRTCPPort.num()),<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> fOurSessionId,
timeoutParameterString);<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>With the modified version of the streaming
server, the client displays the first frame <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>in 2 sec, the playback never stops and also
testRTSPClient shows video/audio packet.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Do you have any idea about this behavior?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks for your help<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><b><span lang=EN-US style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#339966'>________________________________________________________________</span></b><span
lang=EN-US style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><b><span lang=EN-US style='font-size:8.0pt;font-family:"Tahoma","sans-serif";
color:#339966'>Ing. Giovanni Iamonte<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif";
color:#339966'>Area Tecnologie e sviluppi<o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif";
color:#339966'>Quintetto Srl – Pont Saint Martin (AO)<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:Wingdings;
color:#339966'>(</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#339966'> </span><b><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif";
color:#339966'>mobile: +39 393 9196310<o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:Wingdings;
color:#339966'>(</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#339966'> </span><b><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif";
color:#339966'>tel: +39 0165 1845290</span></b><span style='font-size:8.0pt;
font-family:"Arial","sans-serif";color:#339966'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:Wingdings;
color:#339966'>+</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#339966'> </span><b><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif";
color:#339966'>e-mail: <a href="mailto:iamonte@quintetto.it"><span
style='color:blue'>iamonte@quintetto.it</span></a></span></b><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:Wingdings;
color:#339966'>[</span><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#339966'> </span><b><span style='font-size:8.0pt;font-family:"Tahoma","sans-serif";
color:#339966'>web: <a href="http://www.quintetto.it/"
title="http://www.quintetto.it/"><span style='color:blue'>www.quintetto.it</span></a></span></b><span
lang=EN-US style='color:navy'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</body>
</html>