func (v *ClientSession) EncodeRequestHeader(header *protocol.RequestHeader, writer io.Writer) {
timestamp := protocol.NewTimestampGenerator(protocol.NowTime(), 30)()
account, err := header.User.GetTypedAccount()
if err != nil {
log.Error("VMess: Failed to get user account: ", err)
return
}
idHash := v.idHash(account.(*vmess.InternalAccount).AnyValidID().Bytes())
idHash.Write(timestamp.Bytes(nil))
writer.Write(idHash.Sum(nil))
buffer := make([]byte, 0, 512)
buffer = append(buffer, Version)
buffer = append(buffer, v.requestBodyIV...)
buffer = append(buffer, v.requestBodyKey...)
buffer = append(buffer, v.responseHeader, byte(header.Option))
padingLen := dice.Roll(16)
if header.Security.Is(protocol.SecurityType_LEGACY) {
// Disable padding in legacy mode for a smooth transition.
padingLen = 0
}
security := byte(padingLen<<4) | byte(header.Security)
buffer = append(buffer, security, byte(0), byte(header.Command))
buffer = header.Port.Bytes(buffer)
switch header.Address.Family() {
case v2net.AddressFamilyIPv4:
buffer = append(buffer, AddrTypeIPv4)
buffer = append(buffer, header.Address.IP()...)
case v2net.AddressFamilyIPv6:
buffer = append(buffer, AddrTypeIPv6)
buffer = append(buffer, header.Address.IP()...)
case v2net.AddressFamilyDomain:
buffer = append(buffer, AddrTypeDomain, byte(len(header.Address.Domain())))
buffer = append(buffer, header.Address.Domain()...)
}
if padingLen > 0 {
pading := make([]byte, padingLen)
rand.Read(pading)
buffer = append(buffer, pading...)
}
fnv1a := fnv.New32a()
fnv1a.Write(buffer)
buffer = fnv1a.Sum(buffer)
timestampHash := md5.New()
timestampHash.Write(hashTimestamp(timestamp))
iv := timestampHash.Sum(nil)
aesStream := crypto.NewAesEncryptionStream(account.(*vmess.InternalAccount).ID.CmdKey(), iv)
aesStream.XORKeyStream(buffer, buffer)
writer.Write(buffer)
return
}
func (this *ClientSession) EncodeRequestHeader(header *protocol.RequestHeader, writer io.Writer) {
timestamp := protocol.NewTimestampGenerator(protocol.NowTime(), 30)()
account, err := header.User.GetTypedAccount()
if err != nil {
log.Error("VMess: Failed to get user account: ", err)
return
}
idHash := this.idHash(account.(*vmess.InternalAccount).AnyValidID().Bytes())
idHash.Write(timestamp.Bytes(nil))
writer.Write(idHash.Sum(nil))
buffer := make([]byte, 0, 512)
buffer = append(buffer, Version)
buffer = append(buffer, this.requestBodyIV...)
buffer = append(buffer, this.requestBodyKey...)
buffer = append(buffer, this.responseHeader, byte(header.Option), byte(0), byte(0), byte(header.Command))
buffer = header.Port.Bytes(buffer)
switch header.Address.Family() {
case v2net.AddressFamilyIPv4:
buffer = append(buffer, AddrTypeIPv4)
buffer = append(buffer, header.Address.IP()...)
case v2net.AddressFamilyIPv6:
buffer = append(buffer, AddrTypeIPv6)
buffer = append(buffer, header.Address.IP()...)
case v2net.AddressFamilyDomain:
buffer = append(buffer, AddrTypeDomain, byte(len(header.Address.Domain())))
buffer = append(buffer, header.Address.Domain()...)
}
fnv1a := fnv.New32a()
fnv1a.Write(buffer)
buffer = fnv1a.Sum(buffer)
timestampHash := md5.New()
timestampHash.Write(hashTimestamp(timestamp))
iv := timestampHash.Sum(nil)
aesStream := crypto.NewAesEncryptionStream(account.(*vmess.InternalAccount).ID.CmdKey(), iv)
aesStream.XORKeyStream(buffer, buffer)
writer.Write(buffer)
return
}