Connecting two computers together using an intermediate server.

I'm trying to write a program that allows users to connect to a server and then pairs off users to chat. I setup the connections between the two clients and that works fine, but as soon as the server disconnects from the two clients the connection between the two is lost. The server is always runnning, it sets up sockets that are global to the clients, what am I missing?

I am not very sure how are you trying to do the job. Is it
client1 <-----> server <----> client2
i.e. all message from client1 is send to server which passes them on to client2 and vice versa. If yes, you will loose connectivity when server goes down. Instead, try a an connection client1 directlyt to client2. for this you might need to run a socket server on client2
the pseudo code might look like this
1. client1 connect to server.
2. client1 check client2 is logged in and convays interest to connect to client2
3. client1 gets IP address and port of client2 from server. This info has been convayed to sever when client 2 logged in.
4. client1 opens socket connection to client2
5. client2 has ServerSocket with establishes recieves connection, opens socket and starts chat seesion.
Note that after step 5, client1 and client2 are directly connected and server no longer comes into picture. It only acts as repository for IP address and port of client2.
hope it helps
Amitabh

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Cannot connect two computers to the same game server HELP!

I have a Linksys WRT54G Router. I have two computers and I want to be able to use them on the same gaming server. Unfortunately, the game only have one port, so I can only port forward one of my computers. How can I configure my router to have two external IP addresses to the server so it won't kick one of my computers out. Thanks!

Hi,
I am in a gaming community and many members have a Linksys at home (but I don't know which kind exactly). Many of us try to connect two computers to the same server (many have a family). It seems it is a common problem that no one can connect two computers to the same game server.
I have a BEFSR41 V3 Firmware version 1.04.8
I use fixed IP address and no connectivity problem on Internet.
I have win XP SP2 on both computer.
I am using a DSL modem
I can connect the two computers to two different game servers at same time, but not the same server. Default port for this game is the same for all servers I use. I tried with both port forwarding enabled (in that case one PCs can connect the other not) or not (in the second case, whenever the second PC connects, the first one lose his connection to the server, no mater the order I try to connect my PCs).
Now the weird thing is that one member in my community just decided to throw away his Linksys router and he bought another brand (which I won't name to remains politically correct). Now, without changing anything in his PCs or his connection type, he can now play with two PC on the same server.
I am seriously thinking doing the same move. Since more and more game are now using Internet (and servers that controls piracy, $$) and family want to play together, not being able to connect two PCs on the same game server makes Linksys in bad situation from marketing point of view.
For example, in my gaming communtity, we now all know that Linksys can't handle two PC on same server, but other brand can...
Thank you in advance for your help.

To save my life I can't connect two computers together.

I have a G5 and an iBook G45.
They both connect to the Internet easily using my cable connection. There is a DLink router that allows both Macs to use the Internet at the same time.
But these two computers can't see each other. I've turned on file sharing and done everything else under the sun I can think of. Sometimes the IBook can see the G5 but today it has decided that the G5 server is running on the Ibook and I should access files locally.
The G5 can't see the Ibook ever.
I can use Firewire to connect easily.

Hi Stu,
Can you connect from one using the ip address of the other? The Finder command cmd-k brings up a dialog for you to enter the URI of the other machine. The first part is the protocol (e.g. http, ftp, afp) the next two parts are so unused I forget what they are. The third part is the host name or address and the last part is the filesystem or file.
So if the machine you wanted to connect to was 192.168.1.10, and it had appletalk filing protocol turned on (personal file sharing) and you wanted to mount Applications, you'd enter
afp://192.168.1.10/Applications
You can leave the filesystem off. If that works, then you can connect. That means you only have the problem of seeing. Each computer is supposed to announce its services using Bonjour. There's a great utility called Bonjour Browser (free on versiontracker) which will show you what's being advertised. I have noticed that it sometimes takes a very long time before file sharing is advertised.

Connecting two computers, wirelessly, using Airport?

I have a IMac intel and a PowerBook G4 - 400 Ti. They both have Airport cards. I understand that they will "talk" to each other with out benefit of a router. I would like to know how I can set this up. I have gone through the setup procedures endlessly and, although I did manage to get the IMac to see the PB once, and I don't know how it happened, I have not been able to do it again. There was an icon on my IMac desktop that I could drag stuff to and it would transfer. I'm quite confident its a simple procedure that I, in my stupidity, cannot fathom. When I try to set up a network I get an error message saying : "There was an error joining the Airport Network". Could it be a "slave/master" relationship between the two computers? With a proper setup will the flow of info be two way or one way? Are the two computers or systems incompatible? You help will be deeply appreciated!
John Callahan

To my knowledge the information you heard is not
correct.
http://docs.info.apple.com/article.html?path=Mac/10.4/
en/mh914.html
Any computer that has an Airport Card, or Wireless
Card (PC) will recognise any network that they are in
range of by and with the use of a ROUTER, thus
completeing the 2 way communication.
There are several different ways to connect and
confiqure a network, these different ways can be and
can get confusing without the paperwork on the step
by step set-up.
http://compnetworking.about.com/cs/basicnetworking/f/w
hatsnetworking.htm
Cheers Don
Actually none of the Airport cards require a Wireless base station (acting as a router/access point) to work. Airport supports ad-hoc wireless mode (computer-to-computer mode, in Apple lingo), which allows two or more wireless-enabled computers to be connected to each other WITHOUT the use of base station. Search for "computer-to-computer" in the support knowledge base.

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How do i connect two computers to transfer my iphoto library using ethernet? How do I know how long it will run?

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In a very near future:
LivingRoom - Macmini (2011, to be delivered in a couple of days... hopefully) will have access to internet via wifi. A 55" TV, a LaCie Minimus 2tb drive (a clone of the other one in the bedroom) and a DAC will be connected to the new mini.
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How can I connect the two minis together using wifi so that I can have easy acces to all the files in the drive connected to the Mac mini in the other room?
I have looked at the "File sharing preferences" in the system preferences but I am not that sure how to do it.
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"File sharing preferences" is indeed how to do it. Connect both minis to your router (one by ethernet cable, one by wifi, it doesn't matter.)
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Can I connect two computers to one device?

Can I connect two computers to one device? I am trying to have them control different aspects of the experiment that I'm running.

That depends upon the device. If it's GPIB, you could
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[email protected]

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What are the possbile ways to connect two PC's using minimum hardware ?

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Double Post. See:
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Hi
I have two cisco ASA routers & wish to connect them together so that traffic between is permitted with out going outside interface.
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configure one of the interface on each ASA with some IP adddress.
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Sorry if I was not clear
I have two separate ISPs connecting two two separate ASAs.. Two asa are now connecting separate LANs.
Now I want to communicate between LANs.
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vpn-tunnel-protocol ikev1 ikev2
class-map inspection_default
match default-inspection-traffic

How do I connect two lines together.

I have two lines at an angle but where the corner of the angle is supposed to be there is a little triangle missing. I tried joining the two lines together but when I hit join one line goes past the other.
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There is no need to lock one of the paths, because you do not have to tediously select endpoints just to join paths. Doing so was necessary in Illustrator for most of its history, but it finally (decades behind other drawing programs) gained the ability to join paths at their nearest endpoints by just selecting the paths.
Undo (or cut) the unwanted join.
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JET

Connecting two computers with two routes?

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Here are my educated guess(es) :
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If you are the original poster (OP) and your issue is solved, please remember to click the "Solution?" button so that others can more easily find it. If anyone has been helpful to you, please show your appreciation by clicking the "Kudos" button.

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As gv has already requested, please post the output of "ipconfig /all" on each of the two computers.
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Message Edited by arayq2 on 10-18-2008 08:32 AM

Connect two computers behind one router

Hi,
We have two computers at home. (One with iChat 3, and one with iChat 4)
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We cannot make video chats outside with our AIM/Jabber accounts.
How should we configure our router to use iChat video in both computers?
Thanks,
Yoav

You should access the Netgear with a web Browser and confirm it is using UPnP
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Connecting two computers together using an intermediate server.

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