Re: (Linux) GNAT socket exception - when setting No_Delay

["Alex R. Mosteo" <devnull@mailinator.com>]

Robert A Duff wrote:
> "AAFellow@hotmail.com" <AAFellow@hotmail.com> writes:
> 
> 
>>Hi Guys,
>>
>>I'm porting some Ada code from Windows to Linux and I'm getting an
>>exception that's caused by the code that tries to set the "No_Delay"
>>option.  This worked fine on windows...is there any reason it doesn't
>>seem to work on Linux?
>>
>>I'm trying to research this myself now, but any info or anything you
>>can do to point me in the right direction would really be appreciated.
>>Thanks!!
> 
> 
> I don't know about this particular case, but I have noticed different
> behavior of sockets between windows and linux.  Especially in
> error-condition cases.  I don't think that's the fault of the Ada
> sockets implementation -- I think the underlying operating systems
> just do subtly different things.  I was able to write portable code,
> but only by experimenting with both operating systems.  Reading
> documentation didn't always help, here (sigh!).

I concur here. When using non blocking sockets, be prepared to get 
different exceptions in windows and in linux. Also detecting if a socket 
connection had succeeded or was still alive was tricky. As Robert wrote, 
it was a matter of having both systems at hand.