Android Question Socket Exception

[QtechLab]

Hello everyone,

Who knows how to fix the following crash?

java.net.SocketException
in java.net.Socket.checkOpenAndCreate​

Thanks in advance

 

[Erel]

Can you post the full stack trace?

 

[QtechLab]

I Reaqlly don't know where find it. I see these exceptions on Google Play developer panel

 

[Erel]

You can click on them. It should open a dialog.

 

[QtechLab]

This is what i find about it.

java.lang.RuntimeException: java.net.SocketException: Socket is not connected
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:206)
at anywheresoftware.b4a.BA$2.run(BA.java:328)
at android.os.Handler.handleCallback(Handler.java:746)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5443)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
Caused by: java.net.SocketException: Socket is not connected
at java.net.Socket.checkOpenAndCreate(Socket.java:671)
at java.net.Socket.getInputStream(Socket.java:361)
at anywheresoftware.b4a.objects.SocketWrapper.getInputStream(SocketWrapper.java:220)
at com.XXXXX.XXXXX.clscentrali_imx._isock_connected(clscentrali_imx.java:2066)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:169)

 

[Erel]

My guess is that you are not checking whether the Successful parameter is true before getting the input stream.

 

[QtechLab]

My guess is that you are not checking whether the Successful parameter is true before getting the input stream.

This is the function in my app

private Sub iSock_Connected (Successful As Boolean)
    If Successful = True Then
        timerData.Enabled = False
   
        If TimerConnect.IsInitialized Then
            TimerConnect.Enabled = False
        End If
       
        Dim TxBuffer() As Byte
        iStream.Initialize(iSock.InputStream, iSock.OutputStream, "iStream")

        Log("SOCKET CONNECTED")
       
        If CONNECTION_OK = False And USE_SERVER = True Then
            'REQ:ary(12) as byte
            Dim str As String = IMX.REQID & IMX.GetPasswordConnessione
            Log("Invio REQID e CheckPSW")
            Dim tmp() As Byte = str.GetBytes("ASCII")
            iStream.Write(str.GetBytes("ASCII"))
        Else
            GetXpKeys
        End If
       
    Else
        'Se errore di connessione...
        TimerConnect_Tick
        Log("iSock_Connected = " & Successful)
    End If
   
End Sub

 

[Erel]

Your code looks correct. What are you connecting to?

You can add a Try / Catch block to catch this error. It seems like the connection was broken after the event was raised.

 

[QtechLab]

I'm connecting to a simple server, i don't know why it give me back that error. Personally i never got one with my Nexus 5X. Maybe this problem comes up with other vendor custom devices (most of all in Android 6.X)