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package main
import (
"io/ioutil"
"net"
"os"
)
func readFile(file string) (result []byte) {
result, err := ioutil.ReadFile(file)
if err != nil {
fatal(err)
}
return
}
// Be careful: if you let either of the return values get garbage
// collected by Go they will be closed automatically.
func createSocket(addr string) (net.Listener, *os.File) {
l, err := net.Listen("tcp", addr)
if err != nil {
fatal(err)
}
return l, fileForListener(l)
}
// Be careful: if you let either of the return values get garbage
// collected by Go they will be closed automatically.
func createUnixSocket(addr string) (net.Listener, *os.File) {
if err := os.Remove(addr); err != nil && !os.IsNotExist(err) {
fatal(err)
}
l, err := net.Listen("unix", addr)
if err != nil {
fatal(err)
}
return l, fileForListener(l)
}
func fileForListener(l net.Listener) *os.File {
type filer interface {
File() (*os.File, error)
}
f, err := l.(filer).File()
if err != nil {
fatal(err)
}
return f
}
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