)]}'
{
  "commit": "dee6b63a95577214d94d4b70ff6f77a55135511b",
  "tree": "89ced1f3ff8283bc70f825c48083e1055cdc9135",
  "parents": [
    "d327f04d09be7af7c492357849dcd36d9bd10515"
  ],
  "author": {
    "name": "Maxim Dounin",
    "email": "mdounin@mdounin.ru",
    "time": "Thu Oct 17 16:02:19 2019 +0300"
  },
  "committer": {
    "name": "Maxim Dounin",
    "email": "mdounin@mdounin.ru",
    "time": "Thu Oct 17 16:02:19 2019 +0300"
  },
  "message": "Events: available bytes calculation via ioctl(FIONREAD).\n\nThis makes it possible to avoid looping for a long time while working\nwith a fast enough peer when data are added to the socket buffer faster\nthan we are able to read and process them (ticket #1431).  This is\nbasically what we already do on FreeBSD with kqueue, where information\nabout the number of bytes in the socket buffer is returned by\nthe kevent() call.\n\nWith other event methods rev-\u003eavailable is now set to -1 when the socket\nis ready for reading.  Later in ngx_recv() and ngx_recv_chain(), if\nfull buffer is received, real number of bytes in the socket buffer is\nretrieved using ioctl(FIONREAD).  Reading more than this number of bytes\nensures that even with edge-triggered event methods the event will be\ntriggered again, so it is safe to stop processing of the socket and\nswitch to other connections.\n\nUsing ioctl(FIONREAD) only after reading a full buffer is an optimization.\nWith this approach we only call ioctl(FIONREAD) when there are at least\ntwo recv()/readv() calls.\n",
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