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From: "fabio de francesco" <fmdf@tiscali.it>
Newsgroups: comp.lang.ada
Subject: Re: TCP/IP Sockets with GNAT.Sockets
Date: 2 May 2005 13:22:41 -0700
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Date: 2005-05-02T13:22:41-07:00
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Bj=F6rn wrote:
> > If you read g-socket.ads you won't find any usage example either of
> the
> > above mentioned functions or related parameters.
>
> I agree that the documentation of g-sockets could have been a bit
more
> verbose.
> Having just completed a program that uses a lot of stuff from
g-sockets
> I learned two things the hard way:
> * Using g-socket streams to send records does not guarantee that the
> whole record will be sent in one TCP frame.

TCP is a byte-stream protocol with NO record boundaries. When reading
from a TCP socket in a C program we have always to code the read() in a
loop and terminate only when no more characters are read (function
returns value 0 of type "ssize_t" that could be an Integer in Ada I
suppose).

> * UDP/Broadcast does not work well with g-sockets streams.
>
> If you are planning to do any serious work with sockets I would
> recommend to go with Send/Receive instead.

Are Send/Receive Ada functions?

> Best regards
> Bj=F6rn

Ciao,

fabio de francesco