Re: How to I force a Data to be send out at once in socket send

From: Barry Margolin (barmar_at_alum.mit.edu)
Date: 12/27/03 

Date: Sat, 27 Dec 2003 22:18:38 GMT

In article <3FEDB78E.7C4FC4F8@axelero.hu>,
 Lorinczy Zsigmond / Domonyik Mariann <lzsiga@axelero.hu> wrote:

> postbeerliu wrote:
> >
> > Hi,Every One,
> >
> > sorry to disturbing. I have truble in my application which should found
> > network failure as soon as possible. I know,normally tcp send will buffered
> > data in system send buffer and send out later. and ,the ack won't send back
> > immedealy for some function to improve tcp performace such as Neagle .How
> > can i force the send fuction to send the data to the network without
> > buffering in local buffer?
> >
> > What i want to do is when i send out a frame of data via socket,i can get
> > response like n equal to the length of the frame when remote peer received
> > the frame of the data ,or -1 when timeout without responce.
>
> Hi, I have the same/similar question: sometimes data should be flushed
> to the remote side (eg: user pressed key ENTER), but I do not see any
> function
> to force this.. (disabling Nagle-algorithm is <i>not exactly</i> the same
> thing)

TCP normally sends the data quickly -- the delay you're trying to get
rid of is on the order of a few milliseconds, not something the user
would notice.

So I think you're trying to solve a non-problem. 

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA

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