ws_send_binary - send binary control-frame

_Bool ws_send_binary(struct websockets *ws, struct ws_info *info, const char msg[], size_t msglen)

Send a binary message of given size.

Binary messages do not need to include the null terminator (\0), they will be read up to msglen.

Parameters:

• ws – the WebSockets handle created with ws_init()

• info – get information on how this transfer went

• msg – the pointer to memory (linear) to send.

• msglen – the length in bytes of msg.

Returns:

true if sent, false on errors.

Example

void on_connect(void *data,
                struct websockets *ws,
                struct ws_info *info,
                const char *ws_protocols)
{
  char text[] = "Hello from the other side";

  ws_send_binary(ws, NULL, text, sizeof(text));
}

int main(void)
{
  struct ws_callbacks cbs = { .on_connect = &on_connect };
  CURLM *mhandle = curl_multi_init();
  struct websockets *ws = ws_init(&cbs, mhandle, NULL);
  ws_set_url(ws, "wss://example.com", NULL);

  /* run the event-loop */
  ws_start(ws);

  uint64_t tstamp;
  bool is_running;
  do {
    is_running = ws_easy_run(ws, 5, &tstamp);
  } while (is_running);

  ws_end(ws);

  ws_cleanup(ws);
  curl_multi_cleanup(mhandle);
}