Method close

core/network/WebSocket.cpp:449–485

* @brief Closes the connection to server synchronously. * @note It's a synchronous method, it will not return until websocket thread exits. */

 *  @note It's a synchronous method, it will not return until websocket thread exits.
 */
void WebSocket::close(uint16_t code, std::string_view reason)
{
    if (_state < State::CLOSING)
    {
        _closeCode   = code;
        _closeReason = reason;
        
        if (_service->is_open(0))
        {
            _state = State::CLOSING;
            
            yasio::obstream obs(sizeof(code, reason.size()));
            obs.write(_closeCode);
            obs.write_bytes(reason);
            
            WebSocketProtocol::sendFrame(*this, obs.data(), obs.length(), ws::detail::opcode::close);
            
            _service->close(0);

            if (_transport)
            {
                _syncCloseState = std::make_shared<std::promise<int>>();
                int status      = _syncCloseState->get_future().get();
                _syncCloseState.reset();
                AXLOGD("WebSocket close with status: {}", status);
            }
            else
            {
                _service->stop();  // stop internal service for sync close
                _state = State::CLOSED;
                AXLOGW("WebSocket::close: connection not ready!");
            }
        }
        else
            _state = State::CLOSED;
    }
}

/**
 *  @brief Closes the connection to server asynchronously.