ws_timestamp - get WebSockets current timestamp¶
-
uint64_t ws_timestamp(struct websockets *ws)¶
The WebSockets event-loop concept of “now”.
Note
the timestamp is updated at the start of each event-loop iteration
- Parameters
ws – the WebSockets handle created with ws_init()
- Returns
the timestamp in milliseconds from when ws_timestamp_update() was last called
Example¶
uint64_t time_start, time_end;
void on_connect(void *data,
struct websockets *ws,
struct ws_info *info,
const char *ws_protocols)
{
/* get timestamp of when connection began */
time_start = ws_timestamp(ws);
}
void on_close(void *data,
struct websockets *ws,
struct ws_info *info,
enum ws_close_reason wscode,
const char *reason,
size_t len)
{
/* get timestamp of when connection ended */
time_end = ws_timestamp(ws);
}
int main(void)
{
struct ws_callbacks cbs = { .on_connect = &on_connect,
.on_close = &on_close };
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);
printf("Connection lasted %ld milliseconds\n", (long)(time_end - time_start));
ws_end(ws);
ws_cleanup(ws);
curl_multi_cleanup(mhandle);
}