Disabling algorithms 2004-09-24 - By Brian T. Brunner
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Nagle Algorithm disable:
setsockopt(fd,IPPROTO_TCP,TCP_NODELAY,&x,sizeof(x));
For other opt(s),
man 7 tcp
man 7 ip
man 7 socket
man setsockopt
To make setting options fairly painless (once I figured out what they were and
what values I wanted for them)
I wrote a macro
#define MAYBEDO(a,b,c,d,e,f,g) { if ((a) == 0) {(a) |= setsockopt(c,d,e,f,g); b
++;}}
and used it thus:
int val = 1;
int step = 0;
int errval = 0;
struct linger myLinger = {1,1};
errno=0;
MAYBEDO(errval,step,fd,SOL_SOCKET,SO_LINGER,&myLinger,sizeof(myLinger));
MAYBEDO(errval,step,fd,SOL_SOCKET,SO_REUSEADDR,&val,sizeof(val));
MAYBEDO(errval,step,fd,SOL_SOCKET,SO_KEEPALIVE,&val,sizeof(val));
val = 4;
MAYBEDO(errval,step,fd,SOL_TCP,TCP_KEEPINTVL,&val,sizeof(val));
MAYBEDO(errval,step,fd,SOL_TCP,TCP_KEEPIDLE,&val,sizeof(val));
MAYBEDO(errval,step,fd,SOL_TCP,TCP_KEEPCNT,&val,sizeof(val));
MAYBEDO(errval,step,fd,IPPROTO_TCP, TCP_NODELAY,&val,sizeof(val));
Then I check errval, step, and errno.
Brian Brunner
brian.t.brunner@(protected)
(610)796-5838
>>> smeag0l@(protected) 09/23/04 10:18PM >>>
Hello, does anyone know how to disable the "Nagle Algorithm " and the
"Delayed Acknowledgement algorithm" in RedHat 9?
Thanks
Ryan
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