Android Question Detect string from astream input buffer

[Meigionel TS]

I am having a socket client which sends both text data as well as media (audio bytes) to my B4A app. The only text buffer the client sends is a string "200". Now based on the incoming data I am trying to trigger events. So if it is audio bytes then Audio Streamer would play the bytes however if my app's socket server receives "200" then it would show a Toastmessage.

I couldn't understand how to implement this using AsyncStreamsText so I used the non-prefixed mode of Async to get the incoming byte and then converting it to string.

The code I thought would work.

Sub astreammedia_NewData (Buffer() As Byte)
    If sendingAudio = False Then
       
        Dim msg As String

        msg = BytesToString(Buffer, 0, Buffer.Length, "UTF-8")
        
        If msg <> "200" Then
            audioStream.Write(Buffer)
        Else
            ToastMessageShow("Worked",False)
        End If
    End If
End Sub

It checks if the byte is not "200" then it plays using audioStream but if it is 200 then a toast. Although it works to some extent but most of the time after playing the audio for a few seconds, it starts distorting and finally giving out noise and no actual audio.

I realize that there may be a better or "right way" to approach this problem, but I could not find it. Any help is appreciated.

 

[Erel]

Why aren't you using prefix mode? You cannot assume that messages will not be split or merged.

 

[Meigionel TS]

Because the Client is not using the prefix protocol. Anything that can be done?

 

[Erel]

In that case you should use BytesBuilder to collect the incoming data and use IndexOf to search for "200".GetBytes("ASCII").

 

[Meigionel TS]

Thanks this solved the problem.