Most Web pages consist of a base HTML file and several referenced objects.
HTTP client first initiates a TCP connection with the server. So, client gives its request message into its socket interface, and receives HTTP response messages from its socket interface. Similarly, the server receives request messages from its socket interface and sends response messages into the socket interface. Once the message is delivered to the socket interface, the details of the exchange are out of the hands of the application layer. Suppose a user clicks on a page with a base HTML file and 10 JPEG images.