NNTP-Posting-Date: Sat, 21 Jan 2012 04:17:56 -0600 From: "Chris Uppal" Newsgroups: comp.programming References: <0v9hh79skhp65mev9cbgeqbetvvcorkb3p@4ax.com> <4ugih75ema5t34iqa9epb791kf0j0euig7@4ax.com> Subject: Re: Ideas on solving the file transfer problem Date: Sat, 21 Jan 2012 10:21:12 -0000 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2900.5512 X-RFC2646: Format=Flowed; Original X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5512 Message-ID: Lines: 21 X-Usenet-Provider: http://www.giganews.com X-AuthenticatedUsername: NoAuthUser X-Trace: sv3-3p6vUymcsHtCrDJU2Sv3XR/YYPY9eXqtZRV+L19bEFQS4gdfhUzDOIjQvmPH2RxfLoehY4IJbwKdwb1!q2tkjo4mkcZTa9TcWu5CATUP9qxcAct6JQNjydoykS8YmptAbh7hdJogAyRt4Wne9krc6OWlKMsB X-Complaints-To: abuse@btinternet.com X-DMCA-Complaints-To: abuse@btinternet.com X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 2215 Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.stben.net!border3.nntp.ams.giganews.com!Xl.tags.giganews.com!border1.nntp.ams.giganews.com!nntp.giganews.com!local2.nntp.ams.giganews.com!nntp.bt.com!news.bt.com.POSTED!not-for-mail Xref: x330-a1.tempe.blueboxinc.net comp.programming:1268 Geoff wrote: > It's only a middleman for establishing the connection between two > clients. Once the clients have negotiated a session they operate > peer-to-peer and the server never sees the streams. This is also true > for Windows Live Messenger, ICQ, AIM, and other messaging clients. Might be worth mentioning SIP at this point. RFC 3261. Doesn't solve Rui's original challenge, but is a standardised, potentially third-party-free (or at worst with an independent choice for each user between third-parties), way to do the "discovery" part of any protocol which does do so. (Please don't get the idea that I /like/ the SIP protocol, I merely note that it exists ;-) -- chris