Android Question ServerSocket and Port

[Firpas]

Hi to everybody:

I'm Trying to initialize a ServerSocket

Sub Process_Globals
...
Private SvrSocket1 As ServerSocket
...

Sub Service_Create
   
    SvrSocket1.Initialize(2025, "SvrSocket1")

but ....
How do I can know if the port is in use by another application or service?

Thanks in advance

 

[giga]

I think this one may be hard as applications/services can use many different ports, based on how the are written. If the said application/service is not running at the time you "checked" the port you would not know that is the one it uses.

Ports open and close so catching them may be the biggest challenge.

 

[Erel]

You can add a Try / Catch block. If it fails switch to an alternative port. The problem is that you will need to also switch to the alternative port in the client.

This is how the designer works for example. The IDE tries to connect to one port and if it fails it tries to connect to the second port.

 

[Firpas]

Hi

Thanks for yours replay.

I had resolved with the following code:

        Dim MyPort as int = 2020
        Dim Sw As Boolean = False
        Do While Sw = False
            Try
                SvrSocket1.Initialize(MyPort, "SvrSocket1")
                Sw = True
            Catch
                MyPort = MyPort + 1
            End Try
        Loop

Thanks