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Cross-platform, Easy-to-Use Local LAN Chat?

Ars-Gonzo asks: "I was at a conference last week, and had a surprising number of people connected to a peer-to-peer wireless LAN during the lectures. I saw several Mac users typing away during the lectures, and I found out later that they were using iChat's Rendezvous-based local chat to talk to each other. iChat's local subnet chatting functionality is supposedly based on Jabber, but I can't get a Jabber client (on Windows or Linux) to connect to iChat, locally. Has anyone seen any iChat compatible LAN-chat apps for a platform other than Mac?"

39 comments

  1. IRC? by Vaevictis666 · · Score: 2, Redundant
    Provided you all agree on an IP to host the server at any rate :P

    Either that, or depending on how many people are involved, you could always use MSN or Yahoo IM and invite people into one big happy conversation.

  2. ichat uses jabber?? by Anonymous Coward · · Score: 0

    that's news to me. I thought it just sent serialized Cocoa objects over the wire (Like Hydra^H^H^H^H^HSubEthaEdit).

    I *wish* iChat supported Jabber natively. Why should all my conversations go through AOL??

  3. Windows Messenger and/or Net Send by Nomihn0 · · Score: 1, Funny

    What about the built in Windows Messenger service? All you have to do is hand out a list of computer names and you're good to go.

    if that is not your style, then write a frontend for Net Send using VB and just "net send ' Response with your computer name" That's worked wonders for me on school networks in the past.

    1. Re:Windows Messenger and/or Net Send by gazoombo · · Score: 2, Funny

      speaking of net send on school networks... be careful with the *. I sent 'Happy Mole Day!' to my entire school one day in the computer lab and not they have completely disabled net send. :(

      --
      John Hancock
    2. Re:Windows Messenger and/or Net Send by afidel · · Score: 1

      Not even necessary in a domain environment, the network will find a user name and send the message to them. Not sure exactly how it handles multiple logins but I've never failed to contact someone I knew was online.

      --
      There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
    3. Re:Windows Messenger and/or Net Send by Anonymous Coward · · Score: 0

      u should mod the parent UNDERATED.

    4. Re:Windows Messenger and/or Net Send by doofsmack · · Score: 1

      I have seen high school students almost expelled for using net send *. Be VERY careful.

    5. Re:Windows Messenger and/or Net Send by chendo · · Score: 1

      Dude, that's exactly what I did back in Grade 8.

      VB program for messaging around the school network? I was -selling- this program! Had some registration key thingy for it, sold the keys for 50c each, and they are locked per user, so they can't share keys.

      It was all good until I was experimenting with net send one day, and accidently sent it to the domain. Simultaneously, every computer on the school network went "ping!". I logged off and slowly walked out of the computer room...

      Needless to say, it got banned. And I wasn't punished or anything.... woohoo!

      --
      Founder of Mirror Moon - Tsukihime Game Trans
    6. Re:Windows Messenger and/or Net Send by bhtooefr · · Score: 1

      Except it's slightly limited shareware...

      http://www.rjlsoftware.com/software/utility/nets en d/

      You'll have to create a text file with a list of everything you want to send to, though.

    7. Re:Windows Messenger and/or Net Send by fyonn · · Score: 1

      when I was at university (UND in south africa) one of the lab tech's used a net send (or novell's equiv, it was a while ago) to send a message to everyone in the lan about a broken printer I think. As I vaguely knew the lan admin I replied and we spent the next hour chatting via net sends.

      at that point I was using 3 computers at once. one with windows 3.11 loaded and netscape 2 running from disk, one in dos running several ncsa telnet sessions to the CS student unix box (beastie for anyone who remembers) and a third machine just running net sends.

      actually, that lan admin was incredibly cute.. *sigh* happy days...

      dave

  4. Probably not Jabber-based by mrpuffypants · · Score: 4, Informative

    I'm going to argue that iChat's LAN chatting mechanism probably isn't based upon Jabber at all. Jabber is a server that clients all connect to, whereas Rendezvous is a true P2P technology, where everybody connects to everybody else.

    And good luck on getting 3rd-party support for other protocols in iChat. Apple's got that bolted down to AIM and Local LAN chatting.

    1. Re:Probably not Jabber-based by 2nd+Post! · · Score: 1

      If nothing else, the discovery mechanism is Rendezvous, so if you've got an open source AIM client that's willing to implement Rendezvous discovery, I bet it would be simple enough to 'sniff' the LAN and figure out how to chat with the iChat clients.

      No harder than figuring out any other chat protocol.

    2. Re:Probably not Jabber-based by jahndm · · Score: 1

      iChat Rendezvous uses ports 5297 and 5298. Or at least those are the ports that are opened up if you enable iChat Rendezvous in Mac OS X's firewall setup.

  5. winpopup by chocolatetrumpet · · Score: 1

    easy
    winpopup

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    Spoon not. Fork, or fork not. There is no spoon.
    1. Re:winpopup by bhtooefr · · Score: 1

      It works totally differently on NT/2000/XP/2003. Fire up a command line, and type "net send ", then the computer or user name you wish to send to (and a space), then the message you wish to send. You do not need WinPopup running on the client if it is one of the OSes mentioned above, but Windows Messenger Service must be enabled (it is by default, but it is often disabled for security reasons).

  6. irc, of course by jleq · · Score: 2, Informative

    just set up an irc server, give out the IP address, and let the conversations begin! i've had some good experiences with bircd (http://www.xs4all.nl/~beware3/irc/), it's quite lightweight, and works well

    1. Re:irc, of course by cgranade · · Score: 2, Informative

      I agree. IRC may not be fully P2P, but it is very reliable and complete. There's a client for every known OS, and its name is X-Chat. Only one big problem: seizure of the server can reveal who connected, which isn't good for sharing files. For chatting, though... it works wonders.

      --

      #define DRM chmod 000

  7. old school by buttahead · · Score: 0, Redundant

    phone over rj11, said like "forge-eleven"

  8. alpha code is out there by Anonymous Coward · · Score: 1, Informative

    about a year old, not much has changed...
    Jchat

  9. Gaim by Anonymous Coward · · Score: 0

    Doesn't Gaim support Jabber?

  10. iTunes chat by Dixie_Flatline · · Score: 5, Funny

    My sister got involved in this one day while she was sitting around in an office at her university.

    She and her friend were both working on their laptops, and they both had iTunes opened. They were sharing their playlists, and came across a playlist with some good music (belonging to someone that I'll name GuybrushT). Clever person that she is, she changed the name of HER playlist to say 'GuybrushT is cool!'. He noticed, and she and her friend and GuybrushT had a conversation, all in their shared playlist names!

    Your other alternative is, of course, to buy yourself an iBook and just give in to Apple and OS X. It's a pretty cheap way to buy an addition to your social life.

    1. Re:iTunes chat by VisorGuy · · Score: 2, Informative

      ...how geeks meet other geeks.

      --
      This user account is inactive account replaced by the PDA
  11. Searched - Eimp by Cyberop5 · · Score: 2, Informative

    I searched the web for about an hour and I wasn't able to find much. The UPNP vulnerabilities in Windows XP seemed to have scared many people away.

    I was able to find this http://eimp.sourceforge.net/, but rendezvous support isn't fully integrated. The feature status is at 50% now and the developer hasn't posted anything in 4 months. There are rendezvous libraries in the latest release.

    I'm in the process of trying out Eimp. Its not a very robust program, but it does seem to offer rendezvous support. I'm testing it now, I'll reply with results.

    There is also JXTA - a jabber/rendezvous/zeroconf chat protocal being developed by sun.

    --
    Urgo: "I want to live. I want to experience the universe and I want to eat pie!"
    Jack: "Who doesn't??"
    1. Re:Searched - Eimp by Cyberop5 · · Score: 3, Informative

      it only seems to support Rendezvous discovery. I can see my other system online, but I cannot chat with it. This is very buggy software. I can't remove persons on my contact list either, even if i create them. I can however, see their status. IOW, Eimp has a ways to go.

      --
      Urgo: "I want to live. I want to experience the universe and I want to eat pie!"
      Jack: "Who doesn't??"
  12. It's somewhat open by eyeball · · Score: 3, Insightful

    I'm no expert in rendezvous, but it uses open (although not too commonly used) protocols like multicast-DSN. See Apples FAQ on Rendezvous

    As for iChat LAN (which I'm pretty sure is much different than AOL's protocol). Looks like these guys reverse engineered and built a LAN iChat plugin for Proteus (the multiprotocol IM client). They have the source available for download.

    It would be possible to port the rendezvous+iChat protocol to a Jabber server plugin.

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    _______
    2B1ASK1
    1. Re:It's somewhat open by burns210 · · Score: 1

      Rendezvous is Apple's implementation of the open standard of zeroconf... Linux could just as easily have a compatable equivalent if someone coded it. Apple employees the main(or one of the main) developers/writers/originators of the standard, which is why they have adopted and used this super-awesome protocol so quickly.

  13. Message format by lovelace · · Score: 1

    The message format is exactly Jabber (just load up ethereal if you don't believe me), but the discovery mechanism is based on Rendezvous. The conversations themselves happen peer to peer (the ones I've seen are on port 5298, but since the port is specified through multicast dns that could probably be anything). Creating a client for linux would be easy, but the most difficult part would be setting up the multicast DNS. Mandrake 10.0 ships with a multicast DNS responder but afaik no other linux distros do.

  14. iChat does borrow from Jabber... by Wade+Tregaskis · · Score: 2, Informative

    ...but nothing useful for your purposes, in this case. The local messaging uses a subset of the Jabber protocol (as opposed to the AIM protocol used for peer->server->peer messaging). I think the file transfer code is also based in part on Jabber, although I do know that some of the essential specifics are proprietary and undocumented (the original developer made the note a few weeks ago that he can't even remember how it works anymore).

    So while it does borrow from Jabber, it doesn't "use" Jabber. You can't connect to a Jabber server, nor communicate directly between Jabber & iChat.

    There are some chat clients out there with similar functionality on Windows (and I believe Linux), but they're somewhat hit-and-miss affairs, from my experience. I like the suggestion to just get an iBook - I already have one :) - but a more reasonable idea is probably to look at Proteus, as someone mentioned, and think about some sort of Windows/Linux/your-poison port.

  15. Oh Yeah? by Anonymous Coward · · Score: 2, Funny

    Don't listen to this guy... Linux is a cheaper way to abandon your social life!

    Mods: I'm kidding. Please be gentle.

  16. It's called freshmeat... by Ayanami+Rei · · Score: 1


    Search #1

    Search #2

    I can't say I haven't used any of them except ntalk, but that's what I would have done first to find some choices. All of them appear to work fine for what you want to do... just make sure to get one that's java or has source code so you can build on OSX.

    --
    THIS THING CAN TURN ON A DIME, MACROSSZERO STYLE ALSO FUCK BETA, ~NYORON
  17. Vypress chat by psergiu · · Score: 2, Informative

    http://vypress.com/products/chat/
    All windowsen ...

    http://vypress.com/products/chat/unix/
    All unixen ...

    It broadcasts the messages on the local subnet, udp port 8167.

    Protocol compatible with another 2 or 3 simmilar chat programs.

    Used a lot in Romania in the residential networks.

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  18. Cheezepopper.. by Xuri · · Score: 1

    Not iChat related, nor cross-platform, but... On my neighbourhood-LAN(includes coax, tp & wireless heh..) we use Cheezepopper. It's not fancy, it's not filled with dozens of cool features - but it does list all computers on the LAN and allow you to send messages either directly to said computers or to the domain/workgroup they're on.

    A potentially hazardous (to your own health) program for big LAN-parties where lots of people have neglected to turn off their Messenger-service in Windows before booting up Counter-Strike for the compo-finals, but generally a decent program which behaves most of the time, and a great replacement for Windows' built-in messenger service in any case. ;P

    --
    -= Ho Eyo He Hum =-
  19. Fire by hsa · · Score: 1

    Forget iChat, get Fire.

  20. iChat compatible by Anonymous Coward · · Score: 0

    Check out http://www.lim.com.au/UnI - has preliminary Rendezvous Chat support on Windows.

    And has reasonably decent Rendezvous Chat support on Mac OSX. .. and also supports MSN, ICQ, Yahoo, other stuff..