Алгоритми маршрутизації в мережах

int on;

#define MIN_SOCKBUF (4*1024)

static int rbuf;

if (fcntl(sock, F_SETFL, O_NONBLOCK) == -1)

logbad(1, "fcntl(%s) O_NONBLOCK: %s",

name, strerror(errno));

on = 1;

if (setsockopt(sock, SOL_SOCKET,SO_BROADCAST, &on,sizeof(on)) < 0)

msglog("setsockopt(%s,SO_BROADCAST): %s",

name, strerror(errno));

#ifdef USE_PASSIFNAME

on = 1;

if (setsockopt(sock, SOL_SOCKET, SO_PASSIFNAME, &on,sizeof(on)) < 0)

msglog("setsockopt(%s,SO_PASSIFNAME): %s",

name, strerror(errno));

#endif

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) {