private async Task <long> GetMyTweets_Backfill()
{
long smallestid = 0;
long largestid = 0;
int backfillQuota = 50;
int backofftimer = 30;
do
{
var hometl = await UserSession.GetUserTimeline(userId : UserSession.TwitterCredentials.UserID, count : _pagingSize, maxId : smallestid);
if (hometl.OK)
{
smallestid = long.MaxValue;
if (hometl.Count < backfillQuota)
{
backfillQuota = hometl.Count;
}
foreach (var tweet in hometl)
{
_mytweets.OnNext(tweet);
if (tweet.Id < smallestid)
{
smallestid = tweet.Id;
}
if (tweet.Id > largestid)
{
largestid = tweet.Id;
}
backfillQuota--;
}
await Task.Delay(_multiFetchBackoffTimer);
}
else
{
// The Backoff will trigger 7 times before just giving up
// once at 30s, 60s, 1m, 2m, 4m, 8m and then 16m
// note that the last call into this will be 1m above the 15 "rate limit reset" window
await Task.Delay(TimeSpan.FromSeconds(backofftimer));
if (backofftimer > _maxbackoff)
{
break;
}
backofftimer = backofftimer * 2;
}
} while (backfillQuota > 0);
return(largestid);
}
