#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
int main() {
	int n;
	unsigned int m = sizeof(n);
	int fdsocket = socket(AF_INET, SOCK_STREAM, 0);
	getsockopt(fdsocket,SOL_SOCKET,SO_SNDBUF,(void *)&n, &m);
	printf("Send buffer: %d\n", n);
	getsockopt(fdsocket,SOL_SOCKET,SO_RCVBUF,(void *)&n, &m);
	printf("Receive buffer: %d\n", n);
}