func (mm *MemberMaker) SessionSetup(proposedVersion uint32) (
cnx *xt.TcpConnection, decidedVersion uint32, err error) {
var (
ciphertext1 []byte
ciphertext2 []byte
)
// Set up connection to server. ---------------------------------
ctor := mm.RegPeer.GetConnector(0)
// DEBUG
fmt.Printf(" SessionSetup: ctor is %s\n", ctor.String())
// END
var conn xt.ConnectionI
//conn, err = ctor.Connect(xt.ANY_TCP_END_POINT) // 2016-11-14
conn, err = ctor.Connect(nil)
if err == nil {
cnx = conn.(*xt.TcpConnection)
// DEBUG
fmt.Printf(" SessionSetup: cnx is %s\n", cnx.String())
// END
var cnxHandler *CnxHandler
if err == nil {
cnxHandler, err = NewCnxHandler(cnx, nil, nil)
if err == nil {
cnxHandler.State = MEMBER_START
mm.CnxHandler = *cnxHandler
}
}
}
if err == nil {
var cOneShot, cSession *xa.AesSession
// Send HELLO -----------------------------------------------
mm.Cnx = cnx
ck := mm.RegPeer.GetCommsPublicKey()
rng := xr.MakeSystemRNG()
cOneShot, ciphertext1, err = xa.ClientEncryptHello(
proposedVersion, ck, rng)
if err == nil {
err = mm.WriteData(ciphertext1)
// Process HELLO REPLY ----------------------------------
if err == nil {
ciphertext2, err = mm.ReadData()
if len(ciphertext2) == 0 {
if err == nil {
err = io.EOF
}
}
if err == nil {
cSession, decidedVersion,
err = xa.ClientDecryptHelloReply(cOneShot, ciphertext2)
if err == nil {
mm.AesSession = *cSession
}
}
}
}
}
return
}
func (upc *UpaxClient) SessionSetup(proposedVersion uint32) (
upcx *xt.TcpConnection, decidedVersion uint32, err error) {
var (
ciphertext1, ciphertext2 []byte
cOneShot, cSession *xa.AesSession
)
rng := xr.MakeSystemRNG()
// Set up connection to server. -----------------------------
ctor, err := xt.NewTcpConnector(upc.serverEnd)
if err == nil {
var conn xt.ConnectionI
conn, err = ctor.Connect(nil)
if err == nil {
upcx = conn.(*xt.TcpConnection)
}
}
// Send HELLO -----------------------------------------------
if err == nil {
upc.Cnx = upcx
cOneShot, ciphertext1, err = xa.ClientEncryptHello(
proposedVersion, upc.serverCK, rng)
}
if err == nil {
err = upc.WriteData(ciphertext1)
}
// Process HELLO REPLY --------------------------------------
if err == nil {
ciphertext2, err = upc.ReadData()
}
if err == nil {
cSession, decidedVersion, err = xa.ClientDecryptHelloReply(
cOneShot, ciphertext2)
}
// Set up AES engines ---------------------------------------
if err == nil {
upc.AesSession = *cSession
upc.Version = xu.DecimalVersion(decidedVersion)
}
return
}