B4J Library jWebSocketClient library

Note: this library depends on jetty_b4j.jar, which is included in jServer3.zip: https://www.b4x.com/android/forum/threads/jserver3.141323/#content

With this library you can implement WebSocket clients. The API is identical to the B4A library: http://www.b4x.com/android/forum/threads/websocket-client-library.40221/#content (except of the object name which is WebSocketClient).

It is based on Jetty WebSocket client implementation.

The push client example was ported to B4J: http://www.b4x.com/android/forum/threads/custom-websocket-based-push-framework.40272/

This means that you can now implement an (almost) always connected solution with bi-directional communication running on Androids, desktops and browsers.

This is an internal library.

Updates:
v1.13 - New SendTextAsync and SendBinaryAsync methods. Do not use SendText / SendBinary. By mistake they are sending the messages on the main thread which can lead to bad things. The old methods are kept for backward compatibility.

 

[wl]

Hi Erel,

As far as I know the library already existed for a few weeks: is there anything new in this library that made you create this post about an hour ago ?
Or has the B4J client library been added ?

Thanks

 

[Erel]

This is the B4J additional libraries forum => This is a B4J library.

 

[billzhan]

Great. Works fine on b4j 2.2beta1.

 

[wl]

This is the B4J additional libraries forum => This is a B4J library.

Stupid me...

 

[Silv]

Hi Erel can you give me the code of your server in the samples? ws://basic4ppc.com:51042/push/b4a_ws2 this one

 

[Erel]

All of the online examples code is available here: http://www.b4x.com/android/forum/threads/webapp-web-apps-overview.39811/

 

[KY Leng]

Hi Erel,

I am not sure whether the server can be implemented on android device or not?
Secondly, do we need static IP for the server or only hosting is enough ?

Best regards,

 

[Erel]

No. The server is implemented in B4J. Which means that it can run on Windows, Linux (including arm boards) or Macs.

You do not need a static ip address. However you will need to use a dynamic dns service.

See this tutorial: https://www.b4x.com/android/forum/t...r-b4j-server-over-the-internet.37201/#content

 

[victormedranop]

Is there a way to stop the server and free the tcp port used?

Regards,

Victor

 

[Erel]

This thread is about the WebSocket client library. Please start a new thread for your question.

 

[Erel]

v1.13 - New SendTextAsync and SendBinaryAsync methods. Do not use SendText / SendBinary. By mistake they are sending the messages on the main thread which can lead to bad things. The old methods are kept for backward compatibility.

 

[xulihang]

Does the library work with B4J v9.8? I can't get it to connect to a websocket jServer.

Edit:

It turns out to be the new filter I added which causes the problem.

Public Sub Filter(req As ServletRequest, resp As ServletResponse) As Boolean
    resp.SetHeader("Access-Control-Allow-Private-Network","true")
    Return False
End Sub

 

[Erel]

Does the library work with B4J v9.8?

Yes.