re PR ada/6717 (Race condition in GNAT.Sockets.Create_Selector)

re PR ada/6717 (Race condition in GNAT.Sockets.Create_Selector)

2005-06-14  Thomas Quinot  <quinot@adacore.com>

	PR ada/6717

	* g-socket.ads, g-socket.adb (Inet_Addr): Special case the all-ones
	broadcast address.
	(Create_Selector): Bind listening socket used to create the signalling
	socket pair to 127.0.0.1 to limit the scope for 'theft' of connection.
	Set listen backlog to 1 to ensure that we detect socket theft by a
	failure of our own connect(2) call.
	(Check_Selector): Improve documentation of the selector mechanism.
	(Broadcast_Inet_Addr): New constant.

From-SVN: r101043