Go server not hearing remote requests - go

Question

I've written a Go server that works perfectly as long as you send it requests from localhost (and addressed to localhost), but it doesn't work when you try to access it from a browser (from a different computer) or even just directed at the external IP address. I want to be able to access it as an external server, not just locally. Why can't it?
The (pared down) source code:
package main
import (
"fmt"
"net"
"os"
)
func main() {
// Listen for incoming connections.
l, err := net.Listen("tcp", "localhost:2082")
if err != nil {
fmt.Println("Error listening:", err.Error())
os.Exit(1)
}
// Close the listener when the application closes.
defer l.Close()
for {
// Listen for an incoming connection.
_, err := l.Accept()
if err != nil {
fmt.Println("Error accepting: ", err.Error())
os.Exit(1)
}
fmt.Println("Incoming connection")
}
}
When you curl localhost:2082, it says "Incoming connection".
When you curl mydomain.com:2082, it does nothing.
The port is forwarded. I'm sure of this because I ran a (node.js) web server from that port, and it worked fine. If it's related, I'm running on Ubuntu 12.04 on an Amazon EC2 instance.
I'd appreciate any help. Thanks!

Answer 1

One way to listen to any incoming IP (not just localhost, mapped by default to 127.0.0.1) would be:
net.Listen("tcp", ":2082")
You also have the function net/http/#ListenAndServe, which allows you to trigger listen on multiple specific ip if you want.
go http.ListenAndServe("10.0.0.1:80", nil)
http.ListenAndServe("10.0.0.2:80", nil)
A good example can be seen in "A Recap of Request Handling in Go".