Handling multiple connections using goroutines

sockets/main.go

@@ -4,24 +4,30 @@ import (
 	"bufio"
 	"fmt"
 	"net"
+	"os"
 	"strings"
 )
 
 func main() {
 	ln, err := net.Listen("tcp", ":1302")
 	catchErr(err)
-	fmt.Println("Listening on port 1302")
-
-	conn, err := ln.Accept()
-	catchErr(err)
+	fmt.Printf("Listening on port 1302...\n")
 
 	for {
+		conn, err := ln.Accept()
+		catchErr(err)
+		go handleConn(conn)
+	}
+}
+
+func handleConn(conn net.Conn) {
+	defer conn.Close()
+
 	message, err := bufio.NewReader(conn).ReadString('\n')
 	catchErr(err)
 	fmt.Printf("Message received: %v", string(message))
 	newMsg := strings.ToUpper(message)
 	conn.Write([]byte(newMsg + "\n"))
-	}
 }
 
 func catchErr(err error) (errHappened bool) {
@@ -29,6 +35,7 @@ func catchErr(err error) (errHappened bool) {
 	if err != nil {
 		errHappened = true
 		fmt.Println(err)
+		os.Exit(2)
 	}
 	return errHappened
 }