Connection problem with sockets in java

Question

i tried this code: http://programming-guides.com/java/tcp-client-server-chat (full example)

and it's working but when i switch the "host" int the client side to an external IP (insted of localhost) it give me this error: "Cannot get IO for connection to.."

i treid to switch the port but it didnt work..

This might sound stupid but do you actually have a deployed chat server at the external ip address? — Erik
– Erik, Commented May 6, 2011 at 9:29

Kaj · Accepted Answer · 2011-05-06 09:29:49Z

1

Is the server running on that remote machine? Is the port open in the firewall?

answered May 6, 2011 at 9:29

Kaj

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1 Comment

fonet Over a year ago

yes, the server running on this remote machine, and yes the port is open in the firewall

PeterMmm · Accepted Answer · 2011-05-06 09:32:11Z

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Try to netcat to the remote host. If you get an connection the example maybe wrong. If not, you cannot connect to that host: host not exists, not listen on that port, port is filtered, etc, etc.

answered May 6, 2011 at 9:32

PeterMmm

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