90 lines
1.6 KiB
Go
90 lines
1.6 KiB
Go
// Useage: go run cmd/ping/ping.go localhost
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package main
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import (
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"encoding/json"
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"fmt"
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"os"
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"strconv"
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"strings"
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"github.com/Tnze/go-mc/bot"
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"github.com/Tnze/go-mc/chat"
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uuid "github.com/satori/go.uuid"
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)
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type status struct {
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Description chat.Message
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Players struct {
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Max int
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Online int
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Sample []struct {
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ID uuid.UUID
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Name string
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}
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}
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Version struct {
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Name string
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Protocol int
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}
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//favicon ignored
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}
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func main() {
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addr, port := getAddr()
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fmt.Printf("MCPING (%s:%d):\n", addr, port)
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resp, delay, err := bot.PingAndList(addr, port)
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if err != nil {
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fmt.Printf("ping and list server fail: %v", err)
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os.Exit(1)
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}
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var s status
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err = json.Unmarshal(resp, &s)
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if err != nil {
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fmt.Print("unmarshal resp fail:", err)
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os.Exit(1)
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}
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fmt.Print(s)
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fmt.Println("Delay:", delay)
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}
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func getAddr() (string, int) {
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const useage = "Useage: mcping <hostname>[:port]"
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if len(os.Args) < 2 {
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fmt.Println("no host name.", useage)
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os.Exit(1)
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}
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addr := strings.Split(os.Args[1], ":")
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var port int
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switch len(addr) {
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case 1:
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port = 25565
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case 2:
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var err error
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port, err = strconv.Atoi(addr[1])
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if err != nil {
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fmt.Println(err, useage)
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os.Exit(1)
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}
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}
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return addr[0], port
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}
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func (s status) String() string {
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var sb strings.Builder
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fmt.Fprintln(&sb, "Server:", s.Version.Name)
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fmt.Fprintln(&sb, "Protocol:", s.Version.Protocol)
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fmt.Fprintln(&sb, "Description:", s.Description)
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fmt.Fprintf(&sb, "Players: %d/%d\n", s.Players.Online, s.Players.Max)
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for _, v := range s.Players.Sample {
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fmt.Fprintf(&sb, "- [%s] %v\n", v.Name, v.ID)
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}
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return sb.String()
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}
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