telebit/mplexer/packer.go

20 lines
454 B
Go

package telebit
import (
"fmt"
)
// Encode creates an MPLEXY V1 header for the given addresses and payload
func Encode(payload []byte, id, tun Addr) ([]byte, []byte, error) {
n := len(payload)
domain := tun.addr
header := []byte(fmt.Sprintf(
"%s,%s,%d,%d,%s,%d,%s,\n",
id.family, id.addr, id.port,
n, tun.scheme, tun.port, domain,
))
raw := []byte{255 - 1, byte(len(header))}
header = append(raw, header...)
return header, payload, nil
}