Question

I am trying to make a simple server/client program pair.
On LAN they work fine, but when i try to connect from the “outside” it says connection refused. I shut down firewalls on both machines but i am still unable to connect, and i double checked the ip.

What am i doing wrong?

Thanks

Jake

Code:

import socket 
host = '' 
port = 9888 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.bind((host,port))     
s.listen(1) 
conn, adrr = s.accept() 
conn.send("Hello, world!") 
s.close() 

Client: 
import socket 
host = '68.x.x.x'
port = 9888
s = socket.socket(socket.AF_INET, socket_SOCK_STREAM)
s.connect((host,port)) 
print s.recv(200) 
s.close() 

Answer 1

You have one of two possible issues.

1. Erroneous network configuration
2. Bug(s) in code

The way to debug this is to try and rule one out. If we can get rid of the Code issue then we know it is a network issue.

Get a Socket Server and client that you know works and then try them as standalone programs. inside and outside of the firewall.
Go to this site and download the examples. Change the ports in both the client and the server, compile and run them. First on same machine within network, second from two machines on same network and then server from within and client from outside of network.