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