Create core package

2 files changed, 53 insertions, 0 deletions

diff --git a/core/data.go b/core/data.go
new file mode 100644
index 0000000..a617f17
--- /dev/null
+++ b/core/data.go
@@ -0,0 +1,30 @@
+package core
+
+type Marshaler interface {
+	Marshal() []any
+}
+
+type DataType uint8
+
+const (
+	TypeHandshake DataType = 0x01
+	TypePing               = 0x02
+	TypePong               = 0x03
+	TypeTest               = 0xFF
+)
+
+type Handshake struct {
+	Version uint8
+}
+
+func (h Handshake) Marshal() []any {
+	return []any{h.Version}
+}
+
+type Test struct {
+	Message string
+}
+
+func (h Test) Marshal() []any {
+	return []any{[]byte(h.Message)}
+}
diff --git a/core/network.go b/core/network.go
new file mode 100644
index 0000000..3065f19
--- /dev/null
+++ b/core/network.go
@@ -0,0 +1,23 @@
+package core
+
+import (
+	"encoding/binary"
+	"fmt"
+	"net"
+)
+
+func Send(conn net.Conn, dataType DataType, data Marshaler) error {
+	packet := []any{uint8(dataType)}
+	packet = append(packet, data.Marshal()...)
+
+	fmt.Println(packet)
+
+	for _, v := range packet {
+		err := binary.Write(conn, binary.BigEndian, v)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}