func (codecType stringCodecType) NewCodec(r io.Reader, w io.Writer) Codec {
return stringCodec{
codecType.Spliter,
binary.NewReader(r),
binary.NewWriter(w),
}
}
// Do DH64 key exchange and return a RC4 reader.
func conn_init(conn net.Conn) (*binary.Writer, *binary.Reader, error) {
var (
writer = binary.NewWriter(conn)
reader = binary.NewReader(conn)
)
rand.Seed(time.Now().UnixNano())
privateKey, publicKey := dh64.KeyPair()
log.Print("server public key: ", publicKey)
writer.WriteUint64LE(publicKey)
if writer.Error() != nil {
return nil, nil, writer.Error()
}
clientPublicKey := reader.ReadUint64LE()
if reader.Error() != nil {
return nil, nil, reader.Error()
}
log.Print("client public key: ", clientPublicKey)
secert := dh64.Secret(privateKey, clientPublicKey)
log.Print("secert: ", secert)
key := make([]byte, 8)
binary.PutUint64LE(key, secert)
rc4stream, err := rc4.NewCipher(key)
if err != nil {
return nil, nil, err
}
log.Print("key: ", hex.EncodeToString(key))
reader = binary.NewReader(cipher.StreamReader{
R: conn,
S: rc4stream,
})
return writer, reader, nil
}
func (codecType stringCodecType) NewDecoder(r io.Reader) Decoder {
return stringDecoder{
codecType.Spliter,
binary.NewReader(r),
}
}
func (_ selfCodecType) NewDecoder(r io.Reader) Decoder {
return selfDecoder{
binary.NewReader(r),
}
}
func (codecType bytesCodecType) NewDecoder(r io.Reader) link.Decoder {
return bytesDecoder{
codecType.Spliter,
binary.NewReader(r),
}
}
func (_ selfCodecType) NewCodec(r io.Reader, w io.Writer) Codec {
return selfCodec{
binary.NewReader(r),
binary.NewWriter(w),
}
}
func (_ selfCodecType) NewStreamCodec(r *bufio.Reader, w *bufio.Writer) StreamCodec {
return selfStreamCodec{
binary.NewReader(r),
binary.NewWriter(w),
}
}
func (_ selfCodecType) NewPacketCodec() PacketCodec {
codec := &selfPacketCodec{}
codec.r = binary.NewReader(&codec.rbuf)
codec.w = binary.NewWriter(&codec.wbuf)
return codec
}