mirror of https://github.com/Dreamacro/clash.git
39 lines
635 B
Go
39 lines
635 B
Go
package redir
|
|
|
|
import (
|
|
"net"
|
|
|
|
"github.com/Dreamacro/clash/common/pool"
|
|
)
|
|
|
|
type packet struct {
|
|
lAddr *net.UDPAddr
|
|
buf []byte
|
|
}
|
|
|
|
func (c *packet) Data() []byte {
|
|
return c.buf
|
|
}
|
|
|
|
// WriteBack opens a new socket binding `addr` to wirte UDP packet back
|
|
func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
|
|
tc, err := dialUDP("udp", addr.(*net.UDPAddr), c.lAddr)
|
|
if err != nil {
|
|
n = 0
|
|
return
|
|
}
|
|
n, err = tc.Write(b)
|
|
tc.Close()
|
|
return
|
|
}
|
|
|
|
// LocalAddr returns the source IP/Port of UDP Packet
|
|
func (c *packet) LocalAddr() net.Addr {
|
|
return c.lAddr
|
|
}
|
|
|
|
func (c *packet) Drop() {
|
|
pool.Put(c.buf)
|
|
return
|
|
}
|