Willy Tarreau 7f4bcc312d MINOR: protocol: improve the proto->drain() API
It was not possible to know if the drain() function had hit an
EAGAIN, so now we change the API of this function to return :
  < 0 if EAGAIN was met
  = 0 if some data remain
  > 0 if a shutdown was received
2014-01-20 22:27:16 +01:00
..
2013-12-16 02:23:51 +01:00