sing-box/transport/clashssr/protocol/packet.go

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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
}