1 % ipc-protocol

2

3 \begin{verbatim}

4

5 +---+ connect +---+ 0 +---+ send +---+ 0 +---+ send +---+ 0 +---+

6 | B |--------->| W |---->| |------>| W |---->| |------>| W |---->| S |

7 +---+ attempt +---+ +---+ hdr +---+ +---+ data +---+ +---+

8 | | |

9 | 1 | 1 | 1

10 V V V

11 +---+ +---+ +---+

12 | E | | E | | E |

13 +---+ +---+ +---+

14

15 B: begin

16 W: wait

17 E: error

18 S: success

19 \end{verbatim}