KryoNet VS Apache PDFBox

I am not sure if ppl would like to play with each other if they have to connect their phones directly (without using Bluetooth), but you can use the kryonet (https://github.com/EsotericSoftware/kryonet) for example (or any other java tcp server like netty) - it won't matter if it's ios or android.

I've taken a look at Kryonet and Netty, but they seem to only be for client-to-server models (Correct me if I'm wrong).

You really shouldn’t be sending complete classes over in general though, the server doesn’t need to know anything about rendering and only needs a data representation of it. You could have smaller packets that hold necessary information that you can pass between client/server and a common Network class that handles registering any objects you’ll be serializing! I believe the kryonet project has examples of this

If you are concerned with having to do a lot of implementation work yourself with Netty, then look no further than Kryonet.

There is kryonet: https://github.com/EsotericSoftware/kryonet

Are you looking for a way to render PDF's or produce them? If you want to produce PDF's, I've used https://pdfbox.apache.org/ successfully as well as https://itextpdf.com/ (potentially costs money).

If you don't mind using java, you can use the open source Apache PDFBox library

https://pdfbox.apache.org/

It's relatively performant and it's a mature and supported codebase that can accomplish most pdf tasks.

Then, open the pdf_utils/pom.xml file and add a dependency to PDFBox, in the dependencies section:

There are some libraries for Java that can help you create a PDF file such as PDFBox or IText. Here there's a short exaplanation on how to use them.

So, when I started to view the documents, a lot of them simply failed to open. I had to look around for a library that could verify PDF documents. I had some experience with PDFBox in the past, so it seemed to be a good go-to solution. It had no way to verify documents by default, but it could open and parse them and that was enough to filter out the incorrect ones. It felt a little bit strange just to read the whole PDF into the memory to verify if it is correct or not, but hey I needed a simple fix for now and it worked really well.

PDFBox can do this. It’s not part of the CLI but it wouldn’t be too hard to add:

https://github.com/apache/pdfbox/blob/5b00807463279f1002e245...