Is there anything to do after ‘mg_ws_send(conn, NULL, 0, WEBSOCKET_OP_CLOSE)’?

[KMSiniline]

HI
I'm working on raising my mongoose version from 6.6 to 7.14 and I'm having trouble with the
previously used

I need to replace the
mg_send_websocket_frame(conn, WEBSOCKET_OP_TEXT, response.c_str(), response.length());
mg_send_websocket_frame(conn, WEBSOCKET_OP_CLOSE, NULL, 0);

I changed this code to the following

mg_ws_send(conn, response.c_str(), response.length(), WEBSOCKET_OP_TEXT);
mg_ws_send(conn, NULL, 0, WEBSOCKET_OP_CLOSE);

Receive an error message on the client side after the change.

What could be the problem?

WebSocket connection to ' ' failed: Close received after close

[scaprile]

Please see our documentation, and follow the guidelines in our tutorials.
https://mongoose.ws/documentation/#websocket
https://mongoose.ws/documentation/#mg_ws_send
Do not think in terms of "replacing this call with that call"; think in terms of "doing this with this new tool"

To send a message, use the proper message type as described in RFC 6455 section 5.6 for data frames. when calling mg_ws_send() or mg_ws_printf()

https://www.rfc-editor.org/rfc/rfc6455#section-5.6

https://www.rfc-editor.org/rfc/rfc6455#section-5.5.1

You are sending a CLOSE. It will CLOSE as you requested.