package shadowsocks import ( "bytes" "errors" "net" "net/url" "github.com/Dreamacro/clash/transport/socks5" ) type packet struct { pc net.PacketConn rAddr net.Addr payload []byte put func() } func (c *packet) Data() []byte { return c.payload } // WriteBack wirtes UDP packet with source(ip, port) = `addr` func (c *packet) WriteBack(b []byte, addr net.Addr) (n int, err error) { if addr == nil { err = errors.New("address is invalid") return } packet := bytes.Join([][]byte{socks5.ParseAddrToSocksAddr(addr), b}, []byte{}) return c.pc.WriteTo(packet, c.rAddr) } // LocalAddr returns the source IP/Port of UDP Packet func (c *packet) LocalAddr() net.Addr { return c.rAddr } func (c *packet) Drop() { if c.put != nil { c.put() } } func (c *packet) InAddr() net.Addr { return c.pc.LocalAddr() } func ParseSSURL(s string) (addr, cipher, password string, err error) { u, err := url.Parse(s) if err != nil { return } addr = u.Host if u.User != nil { cipher = u.User.Username() password, _ = u.User.Password() } return }