common

func NewAddrConn(c net.Conn, addr []byte, random bool) net.Conn

func NewBlockCrypt(key, salt []byte, method string) kcp.BlockCrypt

func NewHMAC(key, salt []byte) hash.Hash

func NewHdrConn(c net.Conn, hdr []byte) net.Conn

func NewPktConn(conn net.Conn) net.Conn

func NewTimeoutConn(c net.Conn, d time.Duration) net.Conn

func Pipe(p1, p2 net.Conn, b1, b2 []byte)