/**
* get a socket option
*
* @param socket socket descriptor
* @param level Socket.SOL_SOCKET, etc.
* @param option_name
* @return socket option value
* @throws IOException on error
*/
public int getSockOpt(int socket, int level, int option_name) throws IOException {
IntByReference value = new IntByReference(0);
IntByReference opt_len = new IntByReference(4);
if (DEBUG) {
System.out.println("getsockopt(" + socket + ", " + level + ", " + option_name + ")");
}
int err = sockets.getsockopt(socket, level, option_name, value, opt_len);
if (DEBUG) {
System.out.println(
" returned value: " + value.getValue() + ", size: " + opt_len.getValue());
}
int result = value.getValue();
value.free();
if (false) Assert.that(opt_len.getValue() == 4);
opt_len.free();
LibCUtil.errCheckNeg(err);
return result;
}
