Every time I join a realm I would be fine for a good 5 minutes, but then It'll stop and say "Internal Exception: java.net.SocketException: Connection reset"

Every time I join a realm I would be fine for a good 5 minutes, but then It'll stop and say "Internal Exception: java.net.SocketException: Connection reset". I've tried everything to get this to stop, but I don't understand what I'm supposed to do about this.