[Ada] Fix PR ada/6717

[Arnaud Charlet <charlet at adacore dot com>]

Tested on i686-linux, committed on mainline.

Fix PR ada/6717

Also, Inet_Addr is a binding for the C library function inet_addr(3). This
function uses INADDR_NONE (which is (in_addr_t)-1) to indicate failure,
and which also corresponds to the all-ones broadcast address
255.255.255.255. In order for function Inet_Addr to process this dotted
quad correctly and in conformance with the spec, it needs to be
special-cased.

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.

Attachment: difs.32
Description: Text document