52 lines
1.2 KiB
Go
52 lines
1.2 KiB
Go
package main
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import (
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"net"
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"fmt"
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"time"
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)
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const MAGIC = "\x00\xff\xff\x00\xfe\xfe\xfe\xfe\xfd\xfd\xfd\xfd\x12\x34\x56\x78"
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func isAlive() bool {
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conn, err := net.Dial("udp", "h.woozle.org:30919")
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if err != nil {
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return false
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}
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conn.SetReadDeadline(time.Now().Add(5 * time.Second))
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pkt := "\x01" + "\x00\x00\x00\x00MERF" + MAGIC
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conn.Write([]byte(pkt))
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resp := make([]byte, 40)
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rlen, err := conn.Read(resp)
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if (err != nil) || (rlen == 0) {
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return false
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}
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return true
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}
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func main() {
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fmt.Println("Content-type: text/html")
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fmt.Println("")
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fmt.Println("<!DOCTYPE html>")
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fmt.Println("<html>")
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fmt.Println("<head>")
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fmt.Println("<meta name=\"viewport\" content=\"width=device-width\">")
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fmt.Println("<style type=\"text/css\">#a{font-size: 500%; text-align: center; background: silver;}</style>")
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fmt.Println("<title>Is Ginnie playing Minecraft PE?</title></head>")
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fmt.Println("<body>")
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fmt.Println("<h1>Is Ginnie playing Minecraft PE?</h1>")
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fmt.Println("<p id=\"a\">")
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if isAlive() {
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fmt.Println("yes")
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} else {
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fmt.Println("no")
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}
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fmt.Println("</p>")
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fmt.Println("<p>Use the external server address <code>h.woozle.org</code>, port <code>30919</code> to join in.</p>")
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fmt.Println("</body></html>")
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}
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