Refactor platform command api

experimental/libbox/command_status.go

@@ -0,0 +1,61 @@
+//go:build darwin
+
+package libbox
+
+import (
+	"encoding/binary"
+	"net"
+	"runtime"
+	"time"
+
+	E "github.com/sagernet/sing/common/exceptions"
+)
+
+type StatusMessage struct {
+	Memory     int64
+	Goroutines int32
+}
+
+func readStatus() StatusMessage {
+	var memStats runtime.MemStats
+	runtime.ReadMemStats(&memStats)
+	var message StatusMessage
+	message.Memory = int64(memStats.HeapInuse + memStats.StackInuse + memStats.MSpanInuse)
+	message.Goroutines = int32(runtime.NumGoroutine())
+	return message
+}
+
+func (s *CommandServer) handleStatusConn(conn net.Conn) error {
+	var interval int64
+	err := binary.Read(conn, binary.BigEndian, &interval)
+	if err != nil {
+		return E.Cause(err, "read interval")
+	}
+	ticker := time.NewTicker(time.Duration(interval))
+	defer ticker.Stop()
+	ctx := connKeepAlive(conn)
+	for {
+		err = binary.Write(conn, binary.BigEndian, readStatus())
+		if err != nil {
+			return err
+		}
+		select {
+		case <-ctx.Done():
+			return nil
+		case <-ticker.C:
+		}
+	}
+}
+
+func (c *CommandClient) handleStatusConn(conn net.Conn) {
+	c.handler.Connected()
+	for {
+		var message StatusMessage
+		err := binary.Read(conn, binary.BigEndian, &message)
+		if err != nil {
+			c.handler.Disconnected(err.Error())
+			return
+		}
+		c.handler.WriteStatus(&message)
+	}
+}