java.net.ConnectException: Connection refused

[paul alcala]

Hello, I'm just a newbie in socket programming. I made a simple socket program which accepts clients which is a chat program. But my problem is that when i execute the applet which is in the client side, i get the error java.net.ConnectException: Connection refused. I already changed the java.policy file permissions but it still doesn't work. Can anybody hellp me with this? I really need to fix the program. Thanks.

[J Kneeland]

Are you calling accept() on your server socket?

Something like

try{
ServerSocket ss = new ServerSocket(8080);
Socket sock = ss.accept();
//do stuff with socket
}
catch(IOException ioe)
{
}
....

[paul alcala]

Yes, that's part of the code. What i tried was i just tested the chat client locally in my pc and i can connect to it. But the problem is when run the client applet in other pc and connect to this local JBoss server, i get an error: connection refused

[jeff willis]

Can your client "ping" your server (and visa versa)?

[paul alcala]

i can't ping the main IP of the Linux Server. The scenario is this == I have a client server program using sockets in java. I deployed the .war file in the Linux server. The server program opens a port to listen for connections then accepts incoming connections. When i execute the Chat server program, it works fine. But when i run the chat client program, i always get Time out on linux server. And in the Web Browser, i get this error java.security.AccessControlException: access denied (java.net.SocketPermission ip ort connect,resolve). Please help me

[jeff willis]

If you can't ping your server, then your application won't be able to get to the sever either.

Sounds to me like some sort of fire wall protection or something like that.

Maybe it's just a "hosts" file that needs updated.

[paul alcala]

You're right. It's a firewall problem. Is there a way how to make a java socket connection to a linux port that has a firewall in it? If there is, can you tell me how to do it? Thanks in advance

[Stefan Wagner]

The idea of a firewall is, to restrict access to the server.
Mostly you may set it up to deny
- specific IPs to connect
- connect on specific ports
- combination of both.

If you could bypass it, it would be useless.
You have to talk to the firewall-manager (linux-server admin), to allow access.

[paul alcala]

I solved the problem already. I just configured the firewall of our linux server. Thanks a lot for the help