Android Question websocket error

nicolino33 · Mar 1, 2023

Hello all, I have one problem:

B4X:

Dim ws As WebSocket
ws.Initialize("ws")
Dim url As String = "wss://stream.binance.com:9443/ws/bnbusdt@miniTicker"
ws.Connect(url)

Error: java.lang.Exception: Sub ws_connected signature does not match expected signature.
public static anywheresoftware.b4a.pc.RemoteObject b4a.example.b4xmainpage_subs_0._ws_connected(anywheresoftware.b4a.pc.RemoteObject,anywheresoftware.b4a.pc.RemoteObject) throws java.lang.Exception

Could you help me?

DonManfred · Mar 1, 2023

nicolino33 said:
Sub ws_connected signature does not match expected signature.

how does the sub signature look like?

nicolino33 · Mar 1, 2023

DonManfred said:
how does the sub signature look like?

The only thing I see is just the error I reported, there are no other indications

DonManfred · Mar 1, 2023

HOW does the sub signature look like?
Noone can help if you do not post it!

nicolino33 · Mar 1, 2023

This is all I see in the error report, and the code that runs is just what I wrote earlier, where can I find the signature?

class anywheresoftware.b4a.pc.RemoteObject,
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create (first time) **
Call B4XPages.GetManager.LogEvents = True to enable logging B4XPages events.
** Activity (main) Resume **
** Activity (main) Pause event (activity is not paused). **
** Activity (main) Resume **
Error occurred on line: 0 (Main)
java.lang.Exception: Sub ws_connected signature does not match expected signature.
public static anywheresoftware.b4a.pc.RemoteObject b4a.example.b4xmainpage_subs_0._ws_connected(anywheresoftware.b4a.pc.RemoteObject,anywheresoftware.b4a.pc.RemoteObject) throws java.lang.Exception

class anywheresoftware.b4a.pc.RemoteObject,

DonManfred · Mar 1, 2023

Last try:

Post the complete sub ws_connected

nicolino33 · Mar 1, 2023

B4X:

Sub ConnectToBinanceWebSocket()
    Public rp As RuntimePermissions
    rp.CheckAndRequest("INTERNET")
    
    Dim ws As WebSocket
    ws.Initialize("ws")
    Dim url As String = "wss://stream.binance.com:9443/ws/bnbusdt@miniTicker"
    ws.Connect(url)
End Sub

nicolino33 · Mar 1, 2023

DonManfred said:
Last try:

Post the complete sub ws_connected

B4X:

Sub ws_Connected (WebSocket1 As WebSocket)
    Log("Connessione WebSocket stabilita")
End Sub

DonManfred · Mar 1, 2023

I give up....

I asked you to post the sub ws_connected and you posted sub ConnectToBinanceWebSocket?

I´m out here

B4X:

Sub ws_Connected
    Log("Connessione WebSocket stabilita")
End Sub

DonManfred · Mar 1, 2023

B4A - WebSocket

See the events listed there...

nicolino33 · Mar 1, 2023

DonManfred said:
I give up....

I asked you to post the sub ws_connected and you posted sub ConnectToBinanceWebSocket?

I´m out here

B4X:

Sub ws_Connected Log("Connessione WebSocket stabilita") End Sub

I posted both!

LucaMs · Mar 1, 2023

To get always the correct sub signatures, you should:

(pressing TAB)

nicolino33 · Mar 1, 2023

DonManfred said:
B4A - WebSocket
See the events listed there...

i don't understand.... the event is "connected" and the websocket is ws, the sub ws_Connected should be right, right?

DonManfred · Mar 1, 2023

nicolino33 said:
ws_Connected should be right, right?

without any parameters, yes.

nicolino33 · Mar 1, 2023

DonManfred said:
without any parameters, yes.

ok i removed the sub..... now it works! Thank you!

LucaMs · Mar 1, 2023

nicolino33 said:
i don't understand.... the event is "connected" and the websocket is ws, the sub ws_Connected should be right, right?

Did you "watch" my previous post? ? ?

(Ok, I wrote "Websocket1", instead of "ws", ma it's the same, you must enter the event name associated to the object, websocket object in this case)

nicolino33 · Mar 1, 2023

LucaMs said:
Did you "watch" my previous post? ? ?

(Ok, I wrote "Websocket1", instead of "ws", ma it's the same, you must enter the event name associated to the object, websocket object in this case)

Yes, thanks!

DonManfred · Mar 1, 2023

LucaMs said:
Did you "watch" my previous post?

you used websocket_connected there. But it will not work this way as he used ws as prefix. So the subname should be ws_connected

LucaMs · Mar 1, 2023

nicolino33 said:
Yes, thanks!

So you wouldn't have needed to ask for confirmation that the sub should be without parameters, the editor itself "tells" you.

LucaMs · Mar 1, 2023

DonManfred said:
you used websocket_connected there. But it will not work this way as he used ws as prefix. So the subname should be ws_connected

Yes, this is why a few moments ago I added:

LucaMs said:
(Ok, I wrote "Websocket1", instead of "ws", ma it's the same, you must enter the event name associated to the object, websocket object in this case)

Android Question websocket error

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