I want to run a go server at linux based system, it happened in soe cases that i found the same port is busy with another app, so i want to kill the running process at that port, and run my server instead, so I wrote the below code:
func main() {
host := "127.0.0.1"
port := "8070"
server := http.Server{
Addr: "127.0.0.1:8070",
}
http.Handle("/www/", http.StripPrefix("/www/", http.FileServer(http.Dir("./www"))))
ln, err := net.Listen("tcp", ":"+port)
if err != nil {
fmt.Fprintf(os.Stderr, "Can't listen on port %q: %s \n", port, err)
// kill the running process at this port
_, err := exec.Command("fuser", "-k", "8070/tcp").Output()
if err != nil {
fmt.Printf("Failed to kill process at Port %q\n", port)
} else {
fmt.Printf("TCP Port %q is available\n", port)
server.ListenAndServe()
}
} else {
ln.Close()
server.ListenAndServe()
}
}
I was able to get the response TCP Port 8070 is available whihc means there was another running process and it had been killed, but my app is closed directly without running my server at the same port which had been already closed!