mirror of
https://github.com/MetaCubeX/mihomo.git
synced 2024-08-26 03:42:32 +00:00
43 lines
936 B
Go
43 lines
936 B
Go
|
package protocol
|
||
|
|
||
|
import (
|
||
|
"net"
|
||
|
|
||
|
"github.com/Dreamacro/clash/common/pool"
|
||
|
)
|
||
|
|
||
|
// NewPacketConn returns a net.NewPacketConn with protocol decoding/encoding
|
||
|
func NewPacketConn(pc net.PacketConn, p Protocol) net.PacketConn {
|
||
|
return &PacketConn{PacketConn: pc, Protocol: p.initForConn(nil)}
|
||
|
}
|
||
|
|
||
|
// PacketConn represents a protocol packet connection
|
||
|
type PacketConn struct {
|
||
|
net.PacketConn
|
||
|
Protocol
|
||
|
}
|
||
|
|
||
|
func (c *PacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
|
||
|
buf := pool.Get(pool.RelayBufferSize)
|
||
|
defer pool.Put(buf)
|
||
|
buf, err := c.EncodePacket(b)
|
||
|
if err != nil {
|
||
|
return 0, err
|
||
|
}
|
||
|
_, err = c.PacketConn.WriteTo(buf, 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
|
||
|
}
|
||
|
bb, length, err := c.DecodePacket(b[:n])
|
||
|
if err != nil {
|
||
|
return n, addr, err
|
||
|
}
|
||
|
copy(b, bb)
|
||
|
return length, addr, err
|
||
|
}
|