B4J Question Web socket client SSL can't connect

EvgenyB4A · Jul 20, 2023

I have a program that works fine with non secure link to server.
When I try to connect to wss link the connection process lasts about 1 minute and then throws following:

org.eclipse.jetty.websocket.api.UpgradeException: 0 null ....
''''''''''''''''''''
'''''''''''''''''''
WebSocket Closed: 0 null

I can succeed to connect to the same link with BrowserWebSocket Clent extension.

EvgenyB4A · Jul 24, 2023

Chris2 said:
Assuming everything was the same on each attempt, the fact you got a connection OK twice would suggest to me that your connection details & certificate are OK.

Try the suggestions from @OliverA and @Erel in posts #2 & #3 of the thread I linked to.

Updating to the latest version can't harm as well.

The suggestions you mentioned relied to server implementation as I got.
Maybe the problem in timeout?
How to increase timeout value for connection?

EvgenyB4A · Jul 25, 2023

teddybear said:
Please use Release mode to run it

Did you try by your program to connect 10-15 times consequently and every time with success?

Chris2 · Jul 26, 2023

EvgenyB4A said:
The suggestions you mentioned relied to server implementation as I got.

Yes, sorry, I didn't realise that you weren't writing the server as well.

If it does connect eventually when you retry and if you can wait for it, there's an auto-reconnect example in the Custom WebSocket Based Push Framework.

B4J Question Web socket client SSL can't connect

EvgenyB4A

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