Initializer
init(maxFrameSize:shouldUpgrade:onUpgrade:)
@preconcurrency init(maxFrameSize: WebSocketMaxFrameSize, shouldUpgrade: @escaping (@Sendable () -> EventLoopFuture<HTTPHeaders?>), onUpgrade: @Sendable @escaping (WebSocket) -> ())Initializer
@preconcurrency init(maxFrameSize: WebSocketMaxFrameSize, shouldUpgrade: @escaping (@Sendable () -> EventLoopFuture<HTTPHeaders?>), onUpgrade: @Sendable @escaping (WebSocket) -> ())