gafik.txt

   1                       (left the host)
   2               +------ acked_byte        +---sent_bytes
   3               |                         |
   4               v                         v
   5 +++++++++++++++++++++++++++++++++++++++++
   6 |p1-----|p2------|p3-----|p4------|-----|
   7        ^                ^
   8        |                |
   9        |                +-----p3.ack.last_byte
  10        |
  11        +--- p1.ack.last_byte
  12
  13
  14
  15
  16 break req | break req | create reply | write reply | break req | close reply
  17