package main import ( "io" "log" "net" "protohackers/pkg/conn" ) func main() { err := conn.StartSimple(smoketest) if err != nil { log.Fatalln(err) } } func smoketest(c net.Conn) { defer c.Close() if _, err := io.Copy(c, c); err != nil { log.Fatalln(err) } }