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Calling javascript synchronously by Enver Haase, 3 weeks ago
Recent Posts
Vaadin Forum3. Vaadin 6, 7, 8

How to use WebSockets as event transport.

Victor Tarasov
6 years ago Oct 28, 2016 8:45am

Can I use WebSockets not only for server -> client conversetions?
I have button in my UI and click listener attached to it. When i click on the button new http request will be sent. I want to use WebSocket fot this purpose instead http requests. 

Enver Haase
6 years ago Nov 04, 2016 3:19pm

Hi Victor,

did you use the @Push annotation in your UI to set up Vaadin Push (using websockets)?
Did you check that both your browser and server support Web Sockets natively?

https://github.com/vaadin/vaadin/blob/master/server/src/main/java/com/vaadin/server/communication/PushConnection.java
mentions the Web Sockets are being used in a bidirectional fashion - however I have not analysed in which way this is taken advantage of.

Also, in HTTP/1.1 usually re-uses open TCP connections, so there shouldn't be any overhead anyway.

Would you elaborate more on your plans and/or share your code?

Best,
--Enver
 

Best,
--Enver