Decouple the handshake part ServerWebSocket API #5387
Merged
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Motivation:
The server WebSocket API can control handshake implicitly (e.g. sending a message) or explicitly (accept or any WebSocket interaction). This result in a more complex implementation than it should be for such API.
Changes:
Extract the handshake API of the ServerWebSocket API in a new ServerWebSocketHandshake API for which an handler can be set when WebSocket handshake needs to be controlled.
This is a backport of Vert.x 5 server WebSocket handshake handler.
The current API is maintained but deprecated.