val elapsedUntilPong3 = System.nanoTime() - startNanos
    assertThat(TimeUnit.NANOSECONDS.toMillis(elapsedUntilPong3).toDouble())
      .isCloseTo(1500.0, 250.0)

    // The client pinged the server 3 times, and it has ponged back 3 times.
    assertThat(webSocket.sentPingCount()).isEqualTo(3)
    assertThat(server.receivedPingCount()).isEqualTo(3)
    assertThat(webSocket.receivedPongCount()).isEqualTo(3)

sha3 import ( "crypto/internal/fips140" "crypto/internal/fips140/subtle" "errors" ) // spongeDirection indicates the direction bytes are flowing through the sponge. type spongeDirection int const ( // spongeAbsorbing indicates that the sponge is absorbing input. spongeAbsorbing spongeDirection = iota // spongeSqueezing indicates that the sponge is being squeezed. spongeSqueezing ) type Digest struct { a [1600 / 8]byte // main state of the hash // a[n:rate] is the buffer. If absorbing, it's the remaining...