socket buffer size

To find the current socket buffer size:

getsockopt(fdsocket,SOL_SOCKET,SO_RCVBUF,(void *)&n, &m);

getsockopt(fdsocket,SOL_SOCKET,SO_SNDBUF,(void *)&n, &m);

To find out more, do "man getsockopt"

To find the current bytes in the socket's buffer:

ioctl(fd,FIONREAD,&bytes_available)

ioctl(fd,FIONWRITE,&bytes_available)

To find out more, do "man ioctl"