Android Question webscocket and sending/receiving binary data

[Mr.Coder]

Hi,

I have android app and i want to send custom type to the b4j server, I use B4XSerializator to convert the custom type to bytes and then i use the following websocket method :

WebSocket1.SendBinary(data)

to send it to the b4j server and for receiving the binary data from the b4j server side i use the following event :

Sub WebSocket1_BinaryMessage (Data() As Byte)
 Log("Binary message received.")
 'work with Data.
End Sub

the question here how can i receive the binary data in the b4j server side and how can i send back the binary data from the b4j sever to the android app.

Note: I want to mention that i use AddWebSocket method and WebSocket class in the b4j server.

Thank you.

 

[Erel]

B4J jServer WebSocket only works with text and it expects it in a specific format. You need to use WebSocketHandler class on the client: https://www.b4x.com/android/forum/threads/websocket-client-library.40221/#content

You can convert the binary data to text with StringUtils.EncodeBase64.

 

[Mr.Coder]

Thank you Erel, I know what you mentioned but I was wondering why there is a byte type parameter in the reception event if we send a text message from the server.