Android Question How to use ServerSocket to establish communication with multiple clients?

[santook]

When I try to use the following code for TCP communication, I can connect multiple times using the TCP debugging tool, and they all show that they have been connected. But only the first connected client can send and receive data, why?

Sub Process_Globals
    'These global variables will be declared once when the application starts.
    'These variables can be accessed from all modules.
    Private xui As XUI
    Private tcps As ServerSocket
    Private a As List
   
End Sub

Sub Globals
    'These global variables will be redeclared each time the activity is created.
    Private ListView1 As ListView
End Sub

Sub Activity_Create(FirstTime As Boolean)
    Activity.LoadLayout("Layout")
    a.Initialize
    tcps.Initialize(8099,"tcps")
    tcps.Listen()
   
End Sub

Sub Activity_Resume

End Sub

Sub Activity_Pause (UserClosed As Boolean)

End Sub

Sub Button1_Click
    For i= 0 To a.Size-1
        a.Get(i).As(AsyncStreams).Write("Hello".GetBytes("ASCII"))
    Next
End Sub

Sub tcps_NewConnection (Successful As Boolean, NewSocket As Socket)
    Dim x As AsyncStreams
    x.Initialize(NewSocket.InputStream,NewSocket.OutputStream,"ass")
    a.Add(x)
End Sub

Sub ass_NewData (Buffer() As Byte)
    ListView1.AddSingleLine(BytesToString(Buffer,0,Buffer.Length,"ASCII"))
End Sub

 

[Erel]

Creating a network solution without B4XPages is a big mistake.
Specifically this code is wrong.

Examples of handling multiple clients with sockets:
[B4X] FTP Server implemented with Socket and AsyncStreams
Simpler: https://www.b4x.com/android/forum/threads/mjpeg-cctv-server.73792/#content