Re: TCP/IP Sockets with GNAT.Sockets

[Eric Jacoboni <jaco@neottia.net>]

In article <42765108$0$22419$ba620e4c@news.skynet.be>, Adrien Plisson
<aplisson-news@stochastique.net> wrote:


> > S : String := "Hello";
> > SEA : Stream_Element_Array(1..S'Length);
> > for SEA'Address use S(S'First)'Address;
> > Last : Stream_Element_Offset;
> > Send_Socket( Socket, SEA, Last );
> 
> (i'm sorry i'm gonna be a bit rude) beuark !

Agree. It's not the sort of things i expected to write with Ada... But,
that's the only code that fits my needs.

> this is implementation dependant:
> - what if Character'Size /= Stream_Element'Size ?
> - what if the memory organization of Stream_Element_Array does not 
> match the one for a String ?

For the second point, Stream_Element_Array is defined as an array of
Stream_Element, so i suppose it match the memory organization of a
String, isn't it ?

> you'd better write this:
> 
> declare
>      Socket : Socket_Type;
>      Channel : Stream_Access;
> begin
>      -- open your socket here, then...
>      Channel := Stream( Socket );
> 
>      String'Write( Channel, "Hello" );
>      -- close your socket here...
> end;

Have you tried this code with a server not Ada aware? Have you tried to
exchange messages with, say, a POP3 server? (to send and to read) I've
tried to use Streams for that, but i never succeeded to make it work...
If a cleaner solution exists, why the hell cannot we find _any_
example?

-- 
jaco