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Date: Fri, 08 Mar 2013 07:14:34 -0500
From: "Peter C. Chapin" <PChapin@vtc.vsc.edu>
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Subject: Re: UDP networking with Ada
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Date: 2013-03-08T07:14:34-05:00
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On 03/08/2013 01:47 AM, anon@att.net wrote:
> Now, most of GNAT's add-on packages like Florist uses TCP. But
> GNAT.Sockets does supports both TCP and UDP protocols. And I do
> have a few examples that uses UDP.
>
>    -- Create an UDP socket and I/O channel
>    Create_Socket ( Server_Socket, Family_Inet, Socket_Datagram ) ;
>    Server_Address := ...
>    Server_Channel := Stream ( Server_Socket, Server_Address ) ;
>
>    --  For data transfer use the attribute "Input" and "Output"
>    Data := Character ' Input ( Server_Channel ) ;
>    Unsigned_32 ' Output ( Server_Channel, Response ) ;
>
>    --  Normal termination
>    Close_Socket ( Server_Socket ) ;

Good to know! I read these comments in the specification:

    type Socket_Type is private;
    --  Sockets are used to implement a reliable bi-directional 
point-to-point,
    --  stream-based connections between hosts.

and just assumed datagram sockets were not supported. That's what I get 
for reading comments, I guess! But now I also see:

    type Mode_Type is (Socket_Stream, Socket_Datagram);
    --  Stream sockets provide connection-oriented byte streams. Datagram
    --  sockets support unreliable connectionless message based 
communication.

So I think I'm good to go.

Thanks.

Peter