adsb-tools/adsbus/socket.c

#include <assert.h>
#include <errno.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <sys/types.h>
#include <sys/socket.h>

#include "socket.h"

void socket_pre_bind_init(int fd) {
	int optval = 1;
	assert(!setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &optval, sizeof(optval)));
}

void socket_bound_init(int fd) {
	int qlen = 5;
	assert(!setsockopt(fd, SOL_TCP, TCP_FASTOPEN, &qlen, sizeof(qlen)));
}

void socket_connected_init(int fd) {
	int optval = 1;
	assert(!setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)));
	optval = 30;
	assert(!setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &optval, sizeof(optval)));
	optval = 10;
	assert(!setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL, &optval, sizeof(optval)));
	optval = 3;
	assert(!setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT, &optval, sizeof(optval)));
}