package protocol import ( "net" "github.com/Dreamacro/clash/common/pool" ) type PacketConn struct { net.PacketConn Protocol } func (c *PacketConn) WriteTo(b []byte, addr net.Addr) (int, error) { buf := pool.GetBuffer() defer pool.PutBuffer(buf) err := c.EncodePacket(buf, b) if err != nil { return 0, err } _, err = c.PacketConn.WriteTo(buf.Bytes(), addr) return len(b), err } func (c *PacketConn) ReadFrom(b []byte) (int, net.Addr, error) { n, addr, err := c.PacketConn.ReadFrom(b) if err != nil { return n, addr, err } decoded, err := c.DecodePacket(b[:n]) if err != nil { return n, addr, err } copy(b, decoded) return len(decoded), addr, nil }