NAME

       socket_quickack - turn TCP Quick ACK mode on or off

SYNTAX

       #include <socket.h>

       int socket_quickack(int s,int value);

DESCRIPTION

       socket_quickack  switches  TCP  Quick  ACK  mode  on  (value=1)  or off (value=0).  If the
       platform does not support this functionality, returns -1 and sets errno to ENOPROTOOPT (or
       ENOSYS if the platform does not define ENOPROTOOPT).

       TCP  Quick  ACK  mode  is on by default because the operating system has to assume it's an
       interactive connection.  In that case, an ACK will be sent quickly after data came in.  If
       your  code  handles  non-interactive server connections, it may make sense to switch Quick
       ACK mode off, telling the kernel to delay sending ACKs because  the  server  is  going  to
       respond  to  incoming  requests anyway, so the ACK can be piggy-backed onto that response,
       saving useless network traffic.

       Normally socket_quickack returns 0. If anything goes wrong,  socket_quickack  returns  -1,
       setting errno appropriately.

EXAMPLE

         #include <socket.h>

         int s;
         char ip[4];
         uint16 p;

         s = socket_tcp4b();
         socket_quickack(s);
         socket_bind4_reuse(s,ip,p);
         socket_listen(16);

SEE ALSO

       socket_fastopen(3)

                                                                               socket_quickack(3)