Unity File Syncer Demo Based On Pun2

PunFileSyncer.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using Photon.Pun;
using Photon.Realtime;

public class PunFileSyncer : MonoBehaviour
{
    public PhotonView photonView;

    public string fileNameToSend; // local filename to send

    public string fileNameToSave; // remote filename to save

    // Start is called before the first frame update
    void Start()
    {
        Debug.LogWarning($"Local View ID: {photonView.ViewID}");
        if (fileNameToSave == null || fileNameToSend == null)
        {
            Debug.LogError("Please set fileNameToSend and fileNameToSave first");
            return;
        }
        if (PhotonNetwork.IsMasterClient)
        {
            Debug.LogError("Master Sends file.");
            SendFile(fileNameToSave, ReadFile(fileNameToSend));
        }
    }

    byte[] ReadFile(string filename)
    {
        if (System.IO.File.Exists(filename))
        {
            return File.ReadAllBytes(filename);
        }
        else
        {
            Debug.LogError($"Can't find file {filename}");
            return new byte[] { };
        }
    }

    // Update is called once per frame
    void Update()
    {
    }

    [PunRPC]
    void ChatMessage(string fileName, byte[] content)
    {
        if (!PhotonNetwork.IsMasterClient)
        {
            string path = Path.Combine(Application.persistentDataPath, fileName);
            Debug.LogWarning($"File was saved to {path}");
            File.WriteAllBytes(path, content);
        }
    }

    public void SendFile(string fileName, byte[] content)
    {
        Debug.LogError($"Content length: {content.Length}");
        photonView.RPC(nameof(ChatMessage), RpcTarget.Others, fileName, content);
    }
}