Wait 11 minutes before deciding a machine is down (same as ruptime).
[unix-history] / usr / src / usr.bin / talk / get_addrs.c
#ifndef lint
static char sccsid[] = "@(#)get_addrs.c 1.2 (Berkeley) %G%";
#endif
#include "talk_ctl.h"
struct hostent *gethostbyname();
struct servent *getservbyname();
get_addrs(my_machine_name, his_machine_name)
char *my_machine_name;
char *his_machine_name;
{
struct hostent *hp;
struct servent *sp;
msg.pid = getpid();
/* look up the address of the local host */
hp = gethostbyname(my_machine_name);
if (hp == (struct hostent *) 0) {
printf("This machine doesn't exist. Boy, am I confused!\n");
exit(-1);
}
bcopy(hp->h_addr, (char *)&my_machine_addr, hp->h_length);
/* if he is on the same machine, then simply copy */
if (bcmp((char *)&his_machine_name, (char *)&my_machine_name,
sizeof(his_machine_name)) == 0)
bcopy((char *)&my_machine_addr, (char *)&his_machine_addr,
sizeof(his_machine_name));
else {
/* look up the address of the recipient's machine */
hp = gethostbyname(his_machine_name);
if (hp == (struct hostent *) 0 ) {
printf("%s is an unknown host\n", his_machine_name);
exit(-1);
}
bcopy(hp->h_addr, (char *) &his_machine_addr, hp->h_length);
}
/* find the daemon portal */
sp = getservbyname("talk", "udp");
if (sp == 0) {
p_error("This machine doesn't support talk");
exit(-1);
}
daemon_port = sp->s_port;
}