feat: Initial revision

pkg/net/client.go

@@ -0,0 +1,42 @@
+package net
+
+import (
+	"bytes"
+	"encoding/json"
+	"net"
+
+	"github.com/AdrianoKF/go-clip/pkg/model"
+)
+
+type Client struct {
+	addr    net.UDPAddr
+	handler HandlerFunc
+}
+
+func NewClient(addr net.UDPAddr, handler HandlerFunc) *Client {
+	instance := &Client{
+		addr,
+		handler,
+	}
+	return instance
+}
+
+func (c Client) SendEvent(msg model.ClipboardUpdated) error {
+	conn, err := net.DialUDP("udp4", nil, &c.addr)
+	if err != nil {
+		return err
+	}
+	defer conn.Close()
+
+	buf := make([]byte, 0)
+	w := bytes.NewBuffer(buf)
+	encoder := json.NewEncoder(w)
+	encoder.Encode(msg)
+
+	_, err = conn.Write(w.Bytes())
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

pkg/net/server.go

@@ -0,0 +1,43 @@
+package net
+
+import (
+	"net"
+
+	"github.com/AdrianoKF/go-clip/internal/util"
+)
+
+type Server struct {
+	addr    net.UDPAddr
+	Handler HandlerFunc
+}
+
+func NewServer(addr net.UDPAddr, handler HandlerFunc) *Server {
+	instance := &Server{
+		addr,
+		handler,
+	}
+	return instance
+}
+
+func (s Server) Listen() {
+	conn, err := net.ListenMulticastUDP("udp4", nil, &s.addr)
+	if err != nil {
+		util.Logger.Error("Error listening on UDP", err)
+		return
+	}
+	defer conn.Close()
+
+	buf := make([]byte, maxDatagramSize)
+	for {
+		n, addr, err := conn.ReadFromUDP(buf)
+		if err != nil {
+			util.Logger.Error("Error reading from UDP", err)
+			return
+		}
+		util.Logger.Info("Received UDP packet from ", addr, " with ", n, " bytes")
+
+		if s.Handler != nil {
+			go s.Handler(addr, n, buf)
+		}
+	}
+}

pkg/net/types.go

@@ -0,0 +1,9 @@
+package net
+
+import "net"
+
+const (
+	maxDatagramSize = 8192
+)
+
+type HandlerFunc func(*net.UDPAddr, int, []byte)