B4J Question concurrent users/clients that can be handle with b4j websocket ?

[devpialkt]

hi erel..

based on tutorial b4j about "[WebApp] Web Apps Overview" in PushB4A's class ( https://www.b4x.com/android/forum/threads/webapp-web-apps-overview.39811/ )

• how many concurrent clients/users of android (b4a) that can be handle wirth b4j websocket ?
• is possible using this method to broadcast messages (push Notif) as a subtitute for GCM or APNS ?
• is possible to send private message to specific user ?

Thanks in advance.

Best regards

 

[Erel]

It depends on many parameters.

There are several developers who use this framework: Custom WebSocket Based Push Framework with several hundreds of connected clients.
The link above is a possible alternative to GCM. It is not possible to implement a similar "background" solution on iOS.

• is possible to send private message to specific user ?

Yes.

 

[devpialkt]

thanks for your quick response



i have modified the code as shown below :

Sub Timer1_Tick
     ws.RunFunction("ServerPing", Array As Object(DateTime.Time(DateTime.Now),"Broadcast"))
     ws.Flush
End Sub

Sub Device_Message(  Params As Map)
    Dim id As String = Params.Get("id")
    Dim method As String =Params.Get("method")
    ws.RunFunction("ServerPing", Array As Object(DateTime.Time(DateTime.Now),id & TAB & "Request received") )
    ws.Flush
End Sub

conclusions :

• when i used function (ws.RunFunction) in sub Timer1_Tick -> it will broadcasst to all connected users
• when i used function ( ws.RunFunction) in event that raised by users, it's only sent to that client

true ???

then, how to know the number of users that connected in websocket's server (b4j) ??

 

[Erel]

You need to learn the code in PushShared. It allows sending messages to a single client and it also tracks the active connections.