diff options
| -rw-r--r-- | gst/udp/gstudpsrc.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/gst/udp/gstudpsrc.c b/gst/udp/gstudpsrc.c index ec644af00..dce2c9981 100644 --- a/gst/udp/gstudpsrc.c +++ b/gst/udp/gstudpsrc.c @@ -483,12 +483,20 @@ retry: IOCTL_SOCKET (udpsrc->sock.fd, FIONREAD, &readsize)) < 0)) goto ioctl_failed; - /* if we get here and there is nothing to read from the socket, the select got - * woken up by activity on the socket but it was not a read. We know someone - * will also do something with the socket so that we don't go into an infinite - * loop in the select(). */ + /* If we get here and the readsize is zero, then either select was woken up + * by activity that is not a read, or a poll error occurred, or a UDP packet + * was received that has no data. Since we cannot identify which case it is, + * we handle all of them. This could possibly lead to a UDP packet getting + * lost, but since UDP is not reliable, we can accept this. */ if (G_UNLIKELY (!readsize)) { + /* try to read a packet (and it will be ignored), + * in case a packet with no data arrived */ + recvfrom (udpsrc->sock.fd, (char *)&slen, 0, 0, &sa.sa, &slen); + + /* clear any error, in case a poll error occurred */ clear_error (udpsrc); + + /* poll again */ goto retry; } |