codecrafters submit [skip ci]

1 files changed, 7 insertions, 1 deletions

diff --git a/app/main.go b/app/main.go
index 46da46d..b9be1e5 100644
--- a/app/main.go
+++ b/app/main.go
@@ -31,7 +31,9 @@ func main() {
 		receivedData := string(buf[:size])
 		fmt.Printf("Received %d bytes from %s: %s\n", size, source, receivedData)
 
-		response := []byte{}
+		response := make([]byte, 12)
+		copy(response, buf[:12])
+		response[2] = flipIndicator(response[2])
 
 		_, err = udpConn.WriteToUDP(response, source)
 		if err != nil {
@@ -39,3 +41,7 @@ func main() {
 		}
 	}
 }
+
+func flipIndicator(b byte) byte {
+	return b | 0b10000000
+}