<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Which in turn goes back to rfc822 - ARPA Internet Text Messages<div><br></div><div><a href="http://www.w3.org/Protocols/rfc822/#z35">http://www.w3.org/Protocols/rfc822/#z35</a></div><div><br></div><div>section 4.7.4</div><div><br></div><div>:-)</div><div><a href="http://www.w3.org/Protocols/rfc822/#z35"></a><br><div><div>On Aug 2, 2011, at 8:10 AM, Anthony Minessale wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>I think the standard for X- is inherited from it's daddy: HTTP and in<br>turn from it's daddy: SMTP<br><br><br><br>On Mon, Aug 1, 2011 at 8:55 PM, Ken Rice <<a href="mailto:krice@freeswitch.org">krice@freeswitch.org</a>> wrote:<br><blockquote type="cite">X- is not covered in any RFCs for SIP, however P- is covered...<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">X- is as you said kinda along for the ride<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">On 8/1/11 8:07 PM, "Andy Spitzer" <<a href="mailto:woof@iwoof.org">woof@iwoof.org</a>> wrote:<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><blockquote type="cite">Woof!<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">On Aug 1, 2011, at 18:12 , Anthony Minessale wrote:<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">maybe you should tell Cisco that they are supposed to start<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><blockquote type="cite">nonstandard headers with X-<br></blockquote></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">That's always been the convention, but there has been some noise about<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">deprecating the use of the X- prefex in general (see<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://tools.ietf.org/html//draft-saintandre-xdash-03">http://tools.ietf.org/html//draft-saintandre-xdash-03</a>).<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">For SIP, I believe the convention was never codified into any standard, and it<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">just came along for the ride with the other RFCS that it "inherited" from<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">(such as HTTP). So much as I like to rag on Cisco for non-standard SIP<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">implementations, this is not one of them.<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">--Woof!<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">_______________________________________________<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">Join us at ClueCon 2011, Aug 9-11, Chicago<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://www.cluecon.com">http://www.cluecon.com</a> 877-7-4ACLUE<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">FreeSWITCH-users mailing list<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a><br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite">UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<br></blockquote></blockquote><blockquote type="cite"><blockquote type="cite"><a href="http://www.freeswitch.org">http://www.freeswitch.org</a><br></blockquote></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">_______________________________________________<br></blockquote><blockquote type="cite">Join us at ClueCon 2011, Aug 9-11, Chicago<br></blockquote><blockquote type="cite"><a href="http://www.cluecon.com">http://www.cluecon.com</a> 877-7-4ACLUE<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">FreeSWITCH-users mailing list<br></blockquote><blockquote type="cite"><a href="mailto:FreeSWITCH-users@lists.freeswitch.org">FreeSWITCH-users@lists.freeswitch.org</a><br></blockquote><blockquote type="cite"><a href="http://lists.freeswitch.org/mailman/listinfo/freeswitch-users">http://lists.freeswitch.org/mailman/listinfo/freeswitch-users</a><br></blockquote><blockquote type="cite">UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<br></blockquote><blockquote type="cite"><a href="http://www.freeswitch.org">http://www.freeswitch.org</a><br></blockquote><blockquote type="cite"><br></blockquote><br><br><br>-- <br>Anthony Minessale II<br><br>FreeSWITCH <a href="http://www.freeswitch.org/">http://www.freeswitch.org/</a><br>ClueCon <a href="http://www.cluecon.com/">http://www.cluecon.com/</a><br>Twitter: <a href="http://twitter.com/FreeSWITCH_wire">http://twitter.com/FreeSWITCH_wire</a><br><br>AIM: anthm<br>MSN:anthony_minessale@hotmail.com<br>GTALK/JABBER/PAYPAL:anthony.minessale@gmail.com<br>IRC: <a href="http://irc.freenode.net">irc.freenode.net</a> #freeswitch<br><br>FreeSWITCH Developer Conference<br><a href="sip:888@conference.freeswitch.org">sip:888@conference.freeswitch.org</a><br>googletalk:conf+888@conference.freeswitch.org<br>pstn:+19193869900<br><br>_______________________________________________<br>Join us at ClueCon 2011, Aug 9-11, Chicago<br>http://www.cluecon.com 877-7-4ACLUE<br><br>FreeSWITCH-users mailing list<br>FreeSWITCH-users@lists.freeswitch.org<br>http://lists.freeswitch.org/mailman/listinfo/freeswitch-users<br>UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users<br>http://www.freeswitch.org<br></div></blockquote></div><br></div></body></html>