Add gob-net exercise

gob-net/go.mod

@@ -0,0 +1,3 @@
+module gob-net
+
+go 1.22.3

gob-net/main.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"encoding/gob"
+	"fmt"
+	"log"
+	"net"
+	"os"
+)
+
+type ReceivedInformation struct {
+	Name          string
+	Age           int
+	FavouriteSong string
+	IsAdmin       bool
+}
+
+func main() {
+	if len(os.Args) != 1 {
+		fmt.Println("Start client")
+		SendGob()
+		os.Exit(0)
+	}
+	ln, err := net.Listen("tcp", ":1302")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer ln.Close()
+	log.Print("Listening on port 1302...")
+
+	for {
+		c, err := ln.Accept()
+		if err != nil {
+			log.Print(err)
+		}
+		defer c.Close()
+		handleConn(c)
+	}
+}
+
+func handleConn(c net.Conn) {
+	dec := gob.NewDecoder(c)
+	var received ReceivedInformation
+	err := dec.Decode(&received)
+	if err != nil {
+		log.Printf("Error happened decoding gob: %v\n", err)
+	}
+	if received.IsAdmin == true {
+		fmt.Println("Message received from an administrator!")
+	} else {
+		fmt.Println("This is not an admin")
+	}
+	fmt.Printf("Received information:\nName: %v\nAge: %v\nFavourite song: %v\n", received.Name, received.Age, received.FavouriteSong)
+}

gob-net/sendmessage.go

@@ -0,0 +1,34 @@
+package main
+
+import (
+	"encoding/gob"
+	"log"
+	"net"
+)
+
+type Information struct {
+	Name          string
+	Age           int
+	FavouriteSong string
+	IsAdmin       bool
+}
+
+func SendGob() {
+	info := Information{
+		Name:          "Raul",
+		Age:           19,
+		FavouriteSong: "Unknown",
+		IsAdmin:       true,
+	}
+
+	conn, err := net.Dial("tcp", "127.0.0.1:1302")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer conn.Close()
+	enc := gob.NewEncoder(conn)
+	err = enc.Encode(info)
+	if err != nil {
+		log.Fatalf("Error happened encoding data: %v\n", err)
+	}
+}