sing-box/transport/vless/constant.go

35 lines
838 B
Go

package vless
import (
"bytes"
"github.com/sagernet/sing/common/buf"
)
var (
tls13SupportedVersions = []byte{0x00, 0x2b, 0x00, 0x02, 0x03, 0x04}
tlsClientHandShakeStart = []byte{0x16, 0x03}
tlsServerHandShakeStart = []byte{0x16, 0x03, 0x03}
tlsApplicationDataStart = []byte{0x17, 0x03, 0x03}
)
var tls13CipherSuiteDic = map[uint16]string{
0x1301: "TLS_AES_128_GCM_SHA256",
0x1302: "TLS_AES_256_GCM_SHA384",
0x1303: "TLS_CHACHA20_POLY1305_SHA256",
0x1304: "TLS_AES_128_CCM_SHA256",
0x1305: "TLS_AES_128_CCM_8_SHA256",
}
func reshapeBuffer(b []byte) []*buf.Buffer {
const bufferLimit = 8192 - 21
if len(b) < bufferLimit {
return []*buf.Buffer{buf.As(b)}
}
index := int32(bytes.LastIndex(b, tlsApplicationDataStart))
if index <= 0 {
index = 8192 / 2
}
return []*buf.Buffer{buf.As(b[:index]), buf.As(b[index:])}
}