73 lines
1.3 KiB
Go
73 lines
1.3 KiB
Go
// Usage: go run examples/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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"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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"github.com/google/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 := getAddr()
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fmt.Printf("MCPING (%s):\n", addr)
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resp, delay, err := bot.PingAndList(addr)
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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 {
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const usage = "Usage: mcping <hostname>[:port]"
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if len(os.Args) < 2 {
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fmt.Println("no host name.", usage)
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os.Exit(1)
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}
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return os.Args[1]
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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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