Inside Macintosh: Open Transport /

Chapter 5 - Option Management / Option Management Reference

Constants and Data Types

The Keepalive Structure

The keepalive structure specifies the value of the OPT_KEEPALIVE option, described in "Generic Options" (page 5-27).

The keepalive structure is defined by the t_kpalive data type.

struct t_kpalive
   {
      long kp_onoff;    /* option on/off */
      long kp_timeout;  /* timeout in minutes */
   };

Field Description

kp_onoff

A constant specifying whether the option is turned on ( T_ON) or off (T_OFF).

kp_timeout

A positive integer specifying for how many minutes
Open Transport can maintain a connection in the absence of traffic.