Алгоритми маршрутизації в мережах, Детальна інформація

if (rbuf >= MIN_SOCKBUF) {

if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF,

&rbuf, sizeof(rbuf)) < 0)

msglog("setsockopt(%s,SO_RCVBUF=%d): %s",

name, rbuf, strerror(errno));

} else {

for (rbuf = 60*1024; ; rbuf -= 4096) {

if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF,

&rbuf, sizeof(rbuf)) == 0) {

trace_act("RCVBUF=%d", rbuf);

break;

}

if (rbuf < MIN_SOCKBUF) {

msglog("setsockopt(%s,SO_RCVBUF = %d): %s",

name, rbuf, strerror(errno));

break;

}

}

}

}

/* get a rip socket

*/

static int /* <0 or file descriptor */

get_rip_sock(naddr addr,

int serious) /* 1=failure to bind is serious */

{

struct sockaddr_in sin;

unsigned char ttl;

int s;

if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0)