[riot-notifications] [RIOT] conn: extend API with timeout support (#3921)

[Kaspar Schleiser]

> @@ -52,11 +52,33 @@ static inline void _srcport(uint16_t *port, gnrc_pktsnip_t *hdr)
>  int gnrc_conn_recvfrom(conn_t *conn, void *data, size_t max_len, void *addr, size_t *addr_len,
>                         uint16_t *port)
>  {
> +    return gnrc_conn_recvfrom_timeout(conn, data, max_len, addr, addr_len, port, CONN_NO_TIMEOUT);

Sorry, I messed up the markdown above.

I see the need for recvfrom() with timeout, I just don't get why the function does something three times, some not-and'ing, and then peeks into the message queue, compared to ```xtimer_set_msg_timeout(); msg_recv();```.

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Reply to this email directly or view it on GitHub:
https://github.com/RIOT-OS/RIOT/pull/3921/files#r40779267
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