Fix socket reset errors when counting

[ondrejnedoma]

When trying to count the number of documents in several collections at once, an error is thrown for all the collections:

MongoService.getRecordCount: error for collection=xxx -> MongoDB ConnectionException: connection closed: The socket connection has been reset by peer.
I/flutter (22421): Possible causes:
I/flutter (22421): - Trying to connect to an ssl/tls encrypted database without specifiyng
I/flutter (22421): either the query parm tls=true or the secure=true parameter in db.open()
I/flutter (22421): - The server requires a key certificate from the client, but no certificate has been sent
I/flutter (22421): - Others

But it's actually none of those possible causes - perhaps this is only some DOS protection of mongodb.com and is not present on self-hosted databases, either way, the count requests being sent sequentially eliminates this issue 👍

[ondrejnedoma]

[vedfi]

Thank you so much for your contribution! I really appreciate that you not only found the bug but also fixed it. Great work! I’ll try to release the new version as soon as possible.