Function esp_idf_svc::sys::esp_transport_ws_set_headers

pub unsafe extern "C" fn esp_transport_ws_set_headers(
    t: *mut esp_transport_item_t,
    headers: *const i8,
) -> i32

@brief Set websocket additional headers

@param t websocket transport handle @param sub_protocol additional header strings each terminated with \r\n

@return - ESP_OK on success - One of the error codes