qt - How qml WebSocket uses Sec-Websocket-Key

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https://doc.qt.io/qt-5/qml-qtwebsockets-websocket.html#errorString-prop

In this website, I did not find Sec-Websocket-Key and Sec-Websocket-Protocol and other related settings.

How can I use them in qml?

Do I need to use C++ QWebsocket ?

Thank you. I understand. As far as I know, Sec-Websocket-Protocol is in the Header , but I can modify it to the url . – Javin Yang Sep 30, 2020 at 14:58 Let me correct my previous comment: 1) Qt WebSocket does not support WebSocket Subprotocols/Sec-Websocket-Protocol, docs : QWebSocket currently does not support WebSocket Extensions and WebSocket Subprotocols. , 2) by default "Sec-Websocket-Key" is randomly generated, docs: Warning: To generate masks, this implementation of WebSockets uses the reasonably secure QRandomGenerator::global()->generate() function although it can be modified. 3) With the above you could explain what you want to do. – eyllanesc Sep 30, 2020 at 17:42

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