Connection reset by peer

Hi, for a web server the error "Connection reset by peer" could really happen when the website is experiencing a high traffic. If your client code sends many concurrent requests then it could be a problem since it's multiplied by active concurrent users, there's a limit to the number of the concurrent requests that a website can handle.

If you haven't the chance to setup multiple servers in load balancing then you could mitigate it for example by managing a queue for the concurrent requests that you have in your code with a small trick inside a coroutine, something like for example here is a sample coroutine to load all pages of a leaderboard in sequence:

IEnumerator LoadAllScores()
{
    int resultsPerPage = 10;
    int page = 1;
    Leaderboard leaderboard = new Leaderboard
    {
        code = "L123",
        timeScope = UnityEngine.SocialPlatforms.TimeScope.AllTime,
        range = new UnityEngine.SocialPlatforms.Range
        {
            from = page,
            count = resultsPerPage
        }
    };
    bool downloading;
    while (page > 0)
    {
        downloading = true;
        leaderboard.LoadScores((bool success) =>
        {
            if (success)
            {
                foreach (Score score in leaderboard.scores)
                {
                    Debug.Log(string.Format("{0}. {1} {2}", score.rank, score.user.userName, score.formattedValue));
                }
            }
            if (page < leaderboard.maxRange)
            {
                leaderboard.range = new UnityEngine.SocialPlatforms.Range
                {
                    from = ++page,
                    count = resultsPerPage
                };
            }
            else
            {
                page = 0;
            }
            downloading = false;
        });
        while (downloading)
            yield return new WaitForEndOfFrame();
    }
}

@skaredcreations Yea, this is for sure something I should implement. It's just strange, since the game isn't released yet. It's just a few testers not playing concurrently. So, the server isn't getting overloaded. I don't even see anything in my server logs. I did see that you have a call to cancel a web request. Since my game only displays one leaderboard at a time, I am trying canceling any previous leaderboard calls if the user selects a new leaderboard before the data returns. So far, it seems to help but I am not certain if I am just masking the issue. Is there a way to get an event when the connection is closed? Maybe then, I just reconnect the user? 

Appreciate your help btw! I'm just not very versed in PHP/MySql coding/debugging. 

-Steve

There isn’t a permanent connection established, the system is built upon calls to web services over HTTP so basically it’s connectionless. That’s why there isn’t any event for closing connection, since there isn’t an “opened connection”.

@skaredcreations OK, so all i need is for the initial handshake to complete, then there is no need to reauth for the game session since the token exists, correct? So maybe my code is over complicated causing unnecessary problems for me.

Yes, that's correct. Once that the initial handshake is completed (the phase when the client sends the encryption key to the server to decrypt the next requests), the client is able to make the calls to the web services even if one of them fails for any reason like the one that we're discussing here. In fact you could also implement the code in the callback so that it would retry the LoadScores again if not success in the callback.

Thanks, after some more debugging, I've pinpointed it to ILeaderboard.Loadscores .

below is a stripped down version of my load leaderboard call. 

"board.LoadScores((bool loaded) =>"  gets called and sometimes  fails to return with either success or fail.

public static void LoadLeaderboardScores(string leaderboardID,TimeScope timeScope,Action<List<BBScore>,TimeScope> LeaderboardCallback = null)
        {
            ILeaderboard board = CombuManager.platform.CreateLeaderboard();
            board.id = leaderboardID;
            board.timeScope = timeScope;
            board.range = new Range(1, 25);
            board.LoadScores((bool loaded) => {
            	if (loaded)
            	{
                
            	}
            	else
            	{
               		Debug.LogError("Failed to Load Top Scores ");
            	}
               
            });
        }

So, maybe I just need to write my own timeout to capture this case?