package internet import ( "net" "v2ray.com/core/features/stats" ) type Connection interface { net.Conn } type StatCouterConnection struct { Connection ReadCounter stats.Counter WriteCounter stats.Counter } func (c *StatCouterConnection) Read(b []byte) (int, error) { nBytes, err := c.Connection.Read(b) if c.ReadCounter != nil { c.ReadCounter.Add(int64(nBytes)) } return nBytes, err } func (c *StatCouterConnection) Write(b []byte) (int, error) { nBytes, err := c.Connection.Write(b) if c.WriteCounter != nil { c.WriteCounter.Add(int64(nBytes)) } return nBytes, err }