Success path for fake tls is implemented

tlstypes/handshake.go

@@ -0,0 +1,37 @@
+package tlstypes
+
+import (
+	"bytes"
+
+	"github.com/9seconds/mtg/utils"
+)
+
+type Handshake struct {
+	Type      HandshakeType
+	Version   Version
+	Random    [32]byte
+	SessionID []byte
+	Tail      Byter
+}
+
+func (h *Handshake) Bytes() []byte {
+	buf := bytes.Buffer{}
+	packetBuf := bytes.Buffer{}
+
+	buf.WriteByte(byte(h.Type))
+
+	packetBuf.Write(h.Version.Bytes())
+	packetBuf.Write(h.Random[:])
+	packetBuf.WriteByte(byte(len(h.SessionID)))
+	packetBuf.Write(h.SessionID)
+	packetBuf.Write(h.Tail.Bytes())
+
+	sizeUint24 := utils.ToUint24(uint32(packetBuf.Len()))
+	sizeUint24Bytes := sizeUint24[:]
+	sizeUint24Bytes[0], sizeUint24Bytes[2] = sizeUint24Bytes[2], sizeUint24Bytes[0]
+
+	buf.Write(sizeUint24Bytes)
+	packetBuf.WriteTo(&buf) // nolint: errcheck
+
+	return buf.Bytes()
+}