From owner-freebsd-stable  Thu Mar 29 12: 5:44 2001
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From: Nate Williams <nate@yogotech.com>
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Date: Thu, 29 Mar 2001 13:05:24 -0700 (MST)
To: "Jim King" <jim@jimking.net>
Cc: "Paul Marquis" <pmarquis@pobox.com>,
	"Nate Williams" <nate@yogotech.com>,
	"Brian Matthews" <blm@actzero.com>,
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Subject: Re: Threads vs. blocking sockets
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> None of the documented values for errno as set by send(2) indicate "only
> part of the data was sent", at least by my reading.  Which value of errno
> indicates that I need to resend part of the data?  How do I tell how many
> bytes were sent?

Again, from the manpage:

     [EMSGSIZE]    The socket requires that message be sent atomically, and
                   the size of the message to be sent made this impossible.

From reading this, you can safely imply that it is possible that part of
a message can be sent, unless a socket is specically created to force
all messages to be sent atomically.


Nate

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