From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gary Thomas <gthomas@redhat.com>
To: "Trenton D. Adams" <tadams@extremeeng.com>
Cc: eCos Discussion <ecos-discuss@sourceware.cygnus.com>
Subject: RE: [ECOS] TCP/IP Stack packet regrouping
Date: Mon, 16 Jul 2001 13:39:00 -0000
Message-id: <XFMail.20010716143849.gthomas@redhat.com>
References: <000201c10e36$941324f0$090110ac@TRENT>
X-SW-Source: 2001-07/msg00481.html

On 16-Jul-2001 Trenton D. Adams wrote:
>   > 
>   > > If not, in blocking mode it will most likely appear to 
>   > happen all at 
>   > > one time right?
>   > 
>   > Not necessarily. read() can return early if _some_ data is 
>   > available.
> 
> Are you saying that read () will return if ONLY some of the data is
> there, but will complete successfully if it's all there?
> 
> 
> So, to summarize what you said.
> 
> Sending generally will send it all at once, and there's no need for a
> loop for the outgoing buffer?
> Receiving I should always do the loop just in case?

Yes, these comments are accurate, but only for TCP connections.  Other
types of connections will have completely different behaviour/semantics.