Sockets h process sends/receives serve servei messages to/from its socket controlled by app developer socket analogous to door process process sending process shoves socket cket message out door TCP with TCP with sending process relies on buffers, Internet buffe variables variable transport infrastructure on other side of door which brings message to socket controlled by os at receiving process API: 1)choice of transport protocol; (2)ability to fix a few parameters lots more on this later uct by Weiteng Sun chapter 2-application layer 11/73Introduct by Weifeng Sun chapter2- application layer 11/73 Sockets • process sends/receives messages to/from its socket • socket analogous to door – sending process shoves message out door – sending process relies on transport infrastructure on other side of door which brings message to socket at receiving process process TCP with buffers, variables socket host or server process TCP with buffers, variables socket host or server Internet controlled by OS controlled by app developer • API: (1) choice of transport protocol; (2) ability to fix a few parameters (lots more on this later)