# Client (The Waiting Waiter) The Elephant is standing by the table, pen in hand, waiting for *you* to tell him what to do next. ![[ClientRead]] ![[ClientWrite]] ![[GSSOpenServer]] ![[LibPQWalReceiverConnect]] ![[LibPQWalReceiverReceive]] ![[SSLOpenServer]] ![[WalSenderWaitForWAL]] ![[WalSenderWriteData]]