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v2fly/transport/internet/authenticators/srtp/srtp.go
2016-10-16 14:22:21 +02:00

44 lines
760 B
Go

package srtp
import (
"math/rand"
"v2ray.com/core/common/alloc"
"v2ray.com/core/common/loader"
"v2ray.com/core/transport/internet"
)
type SRTP struct {
header uint16
number uint16
}
func (this *SRTP) Overhead() int {
return 4
}
func (this *SRTP) Open(payload *alloc.Buffer) bool {
payload.SliceFrom(this.Overhead())
return true
}
func (this *SRTP) Seal(payload *alloc.Buffer) {
this.number++
payload.PrependUint16(this.number)
payload.PrependUint16(this.header)
}
type SRTPFactory struct {
}
func (this SRTPFactory) Create(rawSettings interface{}) internet.Authenticator {
return &SRTP{
header: 0xB5E8,
number: uint16(rand.Intn(65536)),
}
}
func init() {
internet.RegisterAuthenticator(loader.GetType(new(Config)), SRTPFactory{})
}