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43 lines
832 B
Go
43 lines
832 B
Go
package tproxy
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import (
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"net"
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"net/netip"
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"github.com/Dreamacro/clash/common/pool"
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)
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type packet struct {
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pc net.PacketConn
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lAddr netip.AddrPort
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buf []byte
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}
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func (c *packet) Data() []byte {
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return c.buf
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}
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// WriteBack opens a new socket binding `addr` to write UDP packet back
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func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) {
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tc, err := dialUDP("udp", addr.(*net.UDPAddr).AddrPort(), c.lAddr)
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if err != nil {
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n = 0
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return
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}
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n, err = tc.Write(b)
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tc.Close()
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return
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}
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// LocalAddr returns the source IP/Port of UDP Packet
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func (c *packet) LocalAddr() net.Addr {
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return &net.UDPAddr{IP: c.lAddr.Addr().AsSlice(), Port: int(c.lAddr.Port()), Zone: c.lAddr.Addr().Zone()}
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}
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func (c *packet) Drop() {
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pool.Put(c.buf)
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}
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func (c *packet) InAddr() net.Addr {
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return c.pc.LocalAddr()
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}
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