first commit

internal/packet/request.go

@@ -0,0 +1,25 @@
+package packet
+
+import "fmt"
+
+type Request struct {
+	magic    []byte
+	password string
+}
+
+func NewRequest(password string) Request {
+	return Request{
+		magic:    []byte{'\xff', '\xff', '\xff', '\xff'},
+		password: password,
+	}
+}
+
+func (r Request) Header() []byte {
+	return append(r.magic, []byte("rcon")...)
+}
+
+func (r Request) Encode(cmd string) []byte {
+	datagram := r.Header()
+	datagram = append(datagram, fmt.Sprintf(" %s %s", r.password, cmd)...)
+	return datagram
+}

internal/packet/response.go

@@ -0,0 +1,13 @@
+package packet
+
+type Response struct {
+	magic []byte
+}
+
+func NewResponse() Response {
+	return Response{magic: []byte{'\xff', '\xff', '\xff', '\xff'}}
+}
+
+func (r Response) Header() []byte {
+	return append(r.magic, []byte("print\n")...)
+}