if (ret >= 0 && ret <= 4096) { return null; }
SocketDescriptor ret_hu_conv = new SocketDescriptor(null, ret);
ret_hu_conv.ptrs_to.add(this);
if (ret >= 0 && ret <= 4096) { return null; }
SocketDescriptor ret_hu_conv = new SocketDescriptor(null, ret);
ret_hu_conv.ptrs_to.add(this);