def receivePictureFile(client):
    filetodown = open("pic2.jpg", "wb")
    while True:
        data = client.recv(1024)
        if data == b"DONE":
            break
        filetodown.write(data)
    filetodown.close()

## hàm nhận ảnh ở client

def takeScreenShot(connection):
    myscreenshot = pyautogui.screenshot()
    myscreenshot.save("pic1.jpg")

    filetosend = open("pic1.jpg", "rb")
    data = filetosend.read(1024)
    while data:
        connection.send(data)       
        data = filetosend.read(1024)

    filetosend.close()
    #"Send DONE."
    time.sleep(0.5)
    connection.send(b"DONE")  #to break while

    os.remove("pic1.jpg") #delete picture in sever

#hàm gửi ảnh ở sever