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Based on Erel's MQTT ConnctAndReconnet Sub: - This sub will attenpt to maintain a constant websockets connection. Set working=True and call the sub ONCE in your program: Sub ws_ConnectAndReconnect ws.Initialize("ws") Do While working If ws.Connected Then ws.Close ws.Conne

This is not the use case that is solved by "reconnecting WebSocket". You need to disconnect the client without stopping the server. When you stop the server you are clearing the sessions so each reconnection will be treated as a new connection.
link: Thanks, Erel. I understand it now. I have a few questions about WebSockets, which I will post as separate posts. All the best for 2021
link: Hello All, I am using Automatic reconnecting websocket. When the server is stopped and started, the client connects to the server, like the way the n

When working with WebSocket handlers the client maintains an online connection. The connection is expected to be kept alive for as long as needed. However there are cases where the connection can be temporary broken. Especially when the client is a mobile browser. Using the Reconnecting-WebSocket
link: Note: Just for the ABMaterial users. ABMaterial does already use the reconnecting-websocket.js and has a modified version of b4j_ws.js needed for ABM
link: Hello, Erel! Is this applicable to Custom WebSocket Framework? I ask you because I see that you refer only to browser connections and not to device co
link: It is only relevant for browsers. The client in the "custom websocket framework" already implement a similar feature where a timer is used to reconnec

Hi Everyone, is it possible that a reconnecting websocket (reconnecting-websocket.js) should try to reconnect without that server application hasn't catch a disconnection and without the server could have close the websocket connection? Could exist some kind of connection interruption that is not ca
link: It is possible. The server will probably disconnect the previous connection quite quickly. If this is an issue for you then you will need to close th

Even though WebSockets are persistent, they are not super-persistent. Network drops/disruptions should disconnect a WebSocket connection. Since you are using ABMaterial, ABMaterial compensates for this disconnection and will re-establish an previously connected session (via cookies, using something
link: I am running into a small problem with Jetty's Websockets. (which in my case, is a LARGE problem) If I close the browser window, the websocket_discon
link: And this is in my ABMApplication websocket connected code: If ABMShared.NeedsAuthorization Then If session.GetAttribute2("IsAuthorized",
link: That situation does not apply here for this application. Its a control interface to a device that if more than one person is in it, could wreak havok

B4X WebSocket Websockets Client Connect and Reconnect Websockets Client Connect and Reconnect https://www.b4x.com/android/forum/threads/b4x-websockets-client-connect-and-reconnect.143855/ B4A Bluetooth OBD2 Bluetooth App uses OBD2 Bluetooth plug, it has ELM327 V2.1 IC that connects to all OBDII
link: What's New Since Last Week (28 Nov 2022 to 04 Dec 2022) B4J Charts Hansolo Charts Some very nice looking charts https://www.b4x.-charts.143959/ B

Hi @teddybear, I have also tested the loading of my webapp and doing some debugging and yes apparently websockets work with webview, and when the connection is killed either by android or because of bad signal, the webscoket is automatically reconnected, but the variables and maps are lost, so what
link: Hi! Currently I'm trying to load on a webview a webapp deveolped with B4j and everything is working fine, but when you have the page opened for a whil
link: hi @teddybear thank you for your answer, reading again my question I see that I forgot to mention that I'm loading one of the pages of my webapp (made

I kind of remember this was indeed needed back in the day with an older version of Jetty and Safari, but checking the code of our WebApps we currently don't seem to do it any more either. We do get in our logs also occasionally such a message (java.lang.RuntimeException: Object should first be init
link: No, all the connections ws connections so the servlet code is not relevant. This is where the error occurs. Private Sub WebSocket_Connected (WebSoc

Hi Don Manfred, It was false alarm. It works. I was getting in the logs a onWebsocketError: null and I though it was a mistake. It is not the case as it works perfectly and it reconnects successfully. Obviously it is the detection.
link: Is this thread valid today after the upgrade of the jetty server? https://www.b4x.-automatic-reconnecting-websocket.62054/
link: Do you have any problem with the code? Where is the full stacktrace if so?

Thanks, but I could not create a 100% failsafe solution. Instead I poll the server now every few minutes and launch a websocket each time in between. So if the websocket drops, a new one will be reconnected after this interval.
link: Hello, I'm trying to implement websockets between a B4J client and a B4J server. this goes well, but I need some heartbeat mechanism so a connection
link: Check this example: https://www.b4x.-websocket-based-push-framework.40272/#content

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