Unanswered question

How to resolve webSocket connection error in an iso8583 scenario?

I have an iso 8583 scenario.
The connection with server is done, but the issue is when i send a message i get this error "Socket connection needs to be done before null".
I checked the history of the server, I found only the connection and disconnection history, that's mean that the message is not sent to the server.
How can i fix this problem?

manal C.
manal C.

manal C.

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