/* net.h — socket setup (the kernel-facing seam, part 1).
 *
 * All socket option choices that matter for 10 GbE live here: SO_REUSEPORT so
 * each reactor owns a listen queue and the kernel shards inbound peers across
 * cores, TCP_NODELAY (BitTorrent is latency-sensitive on small control msgs),
 * and large socket buffers so the BDP fits.
 */
#ifndef NAUT_NET_H
#define NAUT_NET_H

#include "naut/common.h"
#include <netinet/in.h>

/* Create a TCP listener bound to `port`. With reuseport=true, multiple reactors
 * may each create one on the same port and the kernel load-balances accepts. */
int naut_net_listen(uint16_t port, int backlog, bool reuseport);

/* Tune an accepted/connected peer socket for throughput. */
void naut_net_tune_peer(int fd);

/* Set send/recv socket buffer sizes (bytes); 0 leaves the kernel default. */
void naut_net_set_bufsizes(int fd, int sndbuf, int rcvbuf);

int naut_net_set_nonblock(int fd, bool on);

#endif /* NAUT_NET_H */