krb5_sendauth vs NAGLE vs DelayedAck

John Hascall john at iastate.edu
Wed Jan 14 17:38:09 EST 2009


> On Wed, Jan 14, 2009 at 04:52:34PM -0500, Ken Raeburn wrote:
> > On Jan 14, 2009, at 15:22, John Hascall wrote:
> > > My solution was just to do:
> > >  int on = 1;
> > >  setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on));
> > > before calling krb5_sendauth() but a "better" approach might
> > > be for krb5_write_message to end up calling writev so it
> > > does one write instead of two, I think.
> > 
> > Yes, I think that's probably best -- maybe via a helper function to  
> > run a loop and manage the bookkeeping in case of short writes.

> Or setsockopt() TCP_CORK around krb5_sendauth().

I'm not sure this is portable enough yet.

John



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