A great job has been done ba Warfley with LazWebsockets. I hope this solves my problem. Unfortunately there is hardly any description beyond the chat example. so my question is whether anybody in this forum has experiences with LazWebsockets. My current question is: When I start and connect a html client several times, how can I differnetiate betwenn the various connections, e.g. to send different messages to each of them? IP-Adress, Port is not the answer if the connections are launched from the same browser. Maybe I should ask this in a separate post..