PlainSocketImpl.java 文件源码

@Override
public Object getOption(int optID) throws SocketException {
    if (optID == SocketOptions.SO_TIMEOUT) {
        return Integer.valueOf(receiveTimeout);
    } else if (optID == SocketOptions.IP_TOS) {
        return Integer.valueOf(trafficClass);
    } else {
        // Call the native first so there will be
        // an exception if the socket if closed.
        Object result = netImpl.getSocketOption(fd, optID);
        if (optID == SocketOptions.TCP_NODELAY
                && (netImpl.getSocketFlags() & TCP_NODELAY) != 0) {
            return Boolean.valueOf(tcpNoDelay);
        }
        return result;
    }
}