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<p class="MsoNormal">Hello Ross,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Good day! <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I read your <a href="http://lists.live555.com/pipermail/live-devel/2019-December/021409.html">
comment</a> on the live555 mailing list on 7<sup>th</sup> Dec 2019, regarding the TLS support to “RTSPClient” for connecting to the server via TLS (encrypted TCP). Also, I’ve read thru a lot of comments/change-logs/release-notes of Live555, but couldn’t get
clarifications, hence posting these question to you. We’ll be thankful, if you can provide your valuable suggestions.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>My requirement:</b> Implement a client that connects to an IP camera via that protocol stack (i.e. on an encrypted channel using TLS) with the latest Live555 libraries (i.e.
<span style="font-family:"Times New Roman",serif"><a href="http://www.live555.com/liveMedia/public/">live.2021.02.11</a>).</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Background: </b>As per your <a href="http://lists.live555.com/pipermail/live-devel/2019-December/021409.html">
comment</a>, I’ve modified the <b><i>testRTSPClient</i></b> to call the function “useTLS()” on “RTSPClient” before sending the first RTSP command, but unfortunately I was getting a “Bad Request” error response from IP camera for the OPTIONS command (as shown
in the below screenshot). <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Just for your reference, the sample code used in the testRTSPClient program:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">RTSPClient</span><span style="font-size:9.5pt;font-family:Consolas;color:black">* rtspClient =
</span><span style="font-size:9.5pt;font-family:Consolas;color:#2B91AF">ourRTSPClient</span><span style="font-size:9.5pt;font-family:Consolas;color:black">::createNew(</span><span style="font-size:9.5pt;font-family:Consolas;color:gray">env</span><span style="font-size:9.5pt;font-family:Consolas;color:black">,
</span><span style="font-size:9.5pt;font-family:Consolas;color:gray">rtspURL</span><span style="font-size:9.5pt;font-family:Consolas;color:black">,
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A">RTSP_CLIENT_VERBOSITY_LEVEL</span><span style="font-size:9.5pt;font-family:Consolas;color:black">,
</span><span style="font-size:9.5pt;font-family:Consolas;color:gray">progName</span><span style="font-size:9.5pt;font-family:Consolas;color:black">,
</span><span style="font-size:9.5pt;font-family:Consolas;color:gray">443</span><span style="font-size:9.5pt;font-family:Consolas;color:black">);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue">if</span><span style="font-size:9.5pt;font-family:Consolas;color:black"> (rtspClient ==
</span><span style="font-size:9.5pt;font-family:Consolas;color:#6F008A">NULL</span><span style="font-size:9.5pt;font-family:Consolas;color:black">) {<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:gray">env</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:teal"><<</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#A31515">"Failed to create a RTSP client for URL \""</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:teal"><<</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:gray">rtspURL</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:teal"><<</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#A31515">"\": "</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:teal"><<</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:gray">env</span><span style="font-size:9.5pt;font-family:Consolas;color:black">.getResultMsg()
</span><span style="font-size:9.5pt;font-family:Consolas;color:teal"><<</span><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:#A31515">"\n"</span><span style="font-size:9.5pt;font-family:Consolas;color:black">;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue">return</span><span style="font-size:9.5pt;font-family:Consolas;color:black">;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black"> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black"> ++rtspClientCount;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black">
<span style="background:yellow;mso-highlight:yellow">rtspClient->useTLS();</span><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-indent:.5in;text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:green">// Next, send a RTSP "DESCRIBE" command, to get a SDP description for the stream.</span><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:green">// Note that this command - like all RTSP commands - is sent asynchronously; we do not block, waiting for a response.</span><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:black">
</span><span style="font-size:9.5pt;font-family:Consolas;color:green">// Instead, the following function call returns immediately, and we handle the RTSP response later, from within the event loop:</span><span style="font-size:9.5pt;font-family:Consolas;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas;color:black"> rtspClient->sendOptionsCommand(continueAfterOptions, _authenticator);</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b>Questions:<o:p></o:p></b></p>
<ol style="margin-top:0in" start="1" type="1">
<li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Is there a dependency on the specific version of OpenSSL? We have used with Openssl1.1.1d and Openssl1.1.1g, but same issue observed.<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Do you see any issues in the way we’ve tried to enable TLS in the test client?<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Does the Live555 library also handle the server root-certificate check/validation at the client side? Or Is it something that should be implemented out of the Live555 library?<o:p></o:p></li><li class="MsoListParagraph" style="margin-left:0in;mso-list:l0 level1 lfo1">Do you have any test client to check/test RTSP over TLS to connect to an IP camera using Live555 libraries? If so, it will of great help if you can share. Thanks!<o:p></o:p></li></ol>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><img border="0" width="1897" height="953" style="width:19.7604in;height:9.927in" id="Picture_x0020_1" src="cid:image001.png@01D7175A.B0B079D0"><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Raja Sekhar<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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