B4J Question Messenger Server (like XMPP)

[narek adonts]

Hi,

I am trying to develop a messenging server with B4J.
few questions.

for each connected user I am creating a new class and handle the socket and the Async in this class.
1. Each class is a separate Thread?

2. How many simultaneous users can handle with the server socket?

thank you

Narek

 

[Erel]

Don't use server socket for this. Create a real server with jServer library.

See this example: Custom WebSocket Based Push Framework

 

[narek adonts]

JServer is using http or tcp ?
How about the latency and scalability?

 

[Erel]

See this tutorial: https://www.b4x.com/android/forum/threads/server-building-web-servers-with-b4j.37172/#content
The push framework is based on web sockets.

The latency is low in local networks. Over the internet the latency is of course higher.

The performance of well written servers is excellent: https://www.b4x.com/android/forum/threads/server-performance-measures.37502/#content

 

[narek adonts]

I had a look on the sources that you advised.
I think that.

1. I dont want to use websockets for the server
2. Jetty was a bit complicated for me.
3. I am planning to use AsyncStreams

Thus, I would like to know for example if I am using each connected socket in a spereate class, will it be multithreaded?

How do you think, can I achive to create a server with ServerSocket which can handle 100,000 active connections?

Narek

 

[Erel]

Thus, I would like to know for example if I am using each connected socket in a spereate class, will it be multithreaded?

AsyncStreams uses background threads to manage the communication. The events are raised on the main thread. It doesn't matter whether you use a separate class.

How do you think, can I achive to create a server with ServerSocket which can handle 100,000 active connections?

You will not be able to handle this number of connections with ServerSocket.

A well written server based on jServer will also not be able to support 100,00 active connections. Though it will still support about 100 times more connections than ServerSocket.