private Task EstablishConnection()
{
if (disposed)
{
return(new CompletedTask());
}
var requestParams = new CreateHttpJsonRequestParams(null, url + "/changes/events?id=" + id, "GET", credentials, conventions)
{
AvoidCachingRequest = true
};
return(jsonRequestFactory.CreateHttpJsonRequest(requestParams)
.ServerPullAsync()
.ContinueWith(task =>
{
if (task.IsFaulted && reconnectAttemptsRemaining > 0)
{
logger.WarnException("Could not connect to server, will retry", task.Exception);
Connected = false;
ConnectionStatusCahnged(this, EventArgs.Empty);
reconnectAttemptsRemaining--;
return Time.Delay(TimeSpan.FromSeconds(15))
.ContinueWith(_ => EstablishConnection())
.Unwrap();
}
Connected = true;
ConnectionStatusCahnged(this, EventArgs.Empty);
reconnectAttemptsRemaining = 3; // after the first successful try, we will retry 3 times before giving up
connection = (IDisposable)task.Result;
task.Result.Subscribe(this);
Task prev = watchAllDocs ? Send("watch-docs", null) : new CompletedTask();
if (watchAllIndexes)
{
prev = prev.ContinueWith(_ => Send("watch-indexes", null));
}
prev = watchedDocs.Aggregate(prev, (cur, docId) => cur.ContinueWith(task1 => Send("watch-doc", docId)));
prev = watchedPrefixes.Aggregate(prev, (cur, prefix) => cur.ContinueWith(task1 => Send("watch-prefix", prefix)));
prev = watchedIndexes.Aggregate(prev, (cur, index) => cur.ContinueWith(task1 => Send("watch-indexes", index)));
return prev;
})
.Unwrap());
}
private Task EstablishConnection()
{
if (disposed)
{
return(new CompletedTask());
}
var requestParams = new CreateHttpJsonRequestParams(null, url + "/changes/events?id=" + id, "GET", credentials, conventions)
{
AvoidCachingRequest = true
};
return(jsonRequestFactory.CreateHttpJsonRequest(requestParams)
.ServerPullAsync()
.ContinueWith(task =>
{
if (disposed)
{
throw new ObjectDisposedException("RemoteDatabaseChanges");
}
if (task.IsFaulted)
{
logger.WarnException("Could not connect to server, will retry", task.Exception);
Connected = false;
ConnectionStatusChanged(this, EventArgs.Empty);
if (disposed)
{
return task;
}
if (replicationInformer.IsServerDown(task.Exception) == false)
{
return task;
}
if (replicationInformer.IsHttpStatus(task.Exception,
HttpStatusCode.NotFound,
HttpStatusCode.Forbidden))
{
return task;
}
return Time.Delay(TimeSpan.FromSeconds(15))
.ContinueWith(_ => EstablishConnection())
.Unwrap();
}
Connected = true;
ConnectionStatusChanged(this, EventArgs.Empty);
connection = (IDisposable)task.Result;
task.Result.Subscribe(this);
Task prev = watchAllDocs ? Send("watch-docs", null) : new CompletedTask();
if (watchAllIndexes)
{
prev = prev.ContinueWith(_ => Send("watch-indexes", null));
}
prev = watchedDocs.Aggregate(prev, (cur, docId) => cur.ContinueWith(task1 => Send("watch-doc", docId)));
prev = watchedPrefixes.Aggregate(prev, (cur, prefix) => cur.ContinueWith(task1 => Send("watch-prefix", prefix)));
prev = watchedIndexes.Aggregate(prev, (cur, index) => cur.ContinueWith(task1 => Send("watch-indexes", index)));
return prev;
})
.Unwrap());
}