diff --git a/src/sslip.io-dns-server/main.go b/src/sslip.io-dns-server/main.go index 192034e..2236d3f 100644 --- a/src/sslip.io-dns-server/main.go +++ b/src/sslip.io-dns-server/main.go @@ -40,18 +40,18 @@ func main() { log.Println(logmessage) } - conn, err := net.ListenUDP("udp", &net.UDPAddr{Port: *bindPort}) + connUdp, err := net.ListenUDP("udp", &net.UDPAddr{Port: *bindPort}) // common err hierarchy: net.OpError → os.SyscallError → syscall.Errno switch { case err == nil: - log.Printf("Successfully bound to all IPs, port %d.\n", *bindPort) + log.Printf("Successfully bound via UDP to all IPs, port %d.\n", *bindPort) wg.Add(1) - go readFrom(conn, &wg, x, *quiet) + go readFrom(connUdp, &wg, x, *quiet) case isErrorPermissionsError(err): log.Printf("Try invoking me with `sudo` because I don't have permission to bind to port %d.\n", *bindPort) log.Fatal(err.Error()) case isErrorAddressAlreadyInUse(err): - log.Printf("I couldn't bind to \"0.0.0.0:%d\" (INADDR_ANY, all interfaces), so I'll try to bind to each address individually.\n", *bindPort) + log.Printf("I couldn't bind via UDP to \"0.0.0.0:%d\" (INADDR_ANY, all interfaces), so I'll try to bind to each address individually.\n", *bindPort) ipCIDRs := listLocalIPCIDRs() var boundIPsPorts, unboundIPs []string for _, ipCIDR := range ipCIDRs { @@ -60,7 +60,7 @@ func main() { log.Printf(`I couldn't parse the local interface "%s".`, ipCIDR) continue } - conn, err = net.ListenUDP("udp", &net.UDPAddr{ + connUdp, err = net.ListenUDP("udp", &net.UDPAddr{ IP: ip, Port: *bindPort, Zone: "", @@ -69,16 +69,16 @@ func main() { unboundIPs = append(unboundIPs, ip.String()) } else { wg.Add(1) - boundIPsPorts = append(boundIPsPorts, conn.LocalAddr().String()) - go readFrom(conn, &wg, x, *quiet) + boundIPsPorts = append(boundIPsPorts, connUdp.LocalAddr().String()) + go readFrom(connUdp, &wg, x, *quiet) } } if len(boundIPsPorts) == 0 { - log.Fatalf("I couldn't bind to any IPs on port %d, so I'm exiting", *bindPort) + log.Fatalf("I couldn't bind via UDP to any IPs on port %d, so I'm exiting", *bindPort) } - log.Printf(`I bound to the following IPs: "%s"`, strings.Join(boundIPsPorts, `", "`)) + log.Printf(`I bound via UDP to the following IPs: "%s"`, strings.Join(boundIPsPorts, `", "`)) if len(unboundIPs) > 0 { - log.Printf(`I couldn't bind to the following IPs: "%s"`, strings.Join(unboundIPs, `", "`)) + log.Printf(`I couldn't bind via UDP to the following IPs: "%s"`, strings.Join(unboundIPs, `", "`)) } default: log.Fatal(err.Error())