ntp: If the server cannot be contacted, try next one

This could happen if the network routes are not yet setup
so the sendto() could fail. In this case try next address and
hope for the best. This is a rare issue but I have seen it
couple of times.

diff --git a/src/ntp.c b/src/ntp.c
index 91a8832dc05fc9c6d5ce9f5aa436cd73ee9ba816..8c31fdb6749ccf6afc87428b633e7fc1603c36bd 100644 (file)
--- a/src/ntp.c
+++ b/src/ntp.c
@@ -100,7 +100,12 @@ static void send_packet(int fd, const char *server)
        len = sendto(fd, &msg, sizeof(msg), MSG_DONTWAIT,
                                                &addr, sizeof(addr));
        if (len < 0) {
-               connman_error("Time request for server %s failed", server);
+               connman_error("Time request for server %s failed (%d/%s)",
+                       server, errno, strerror(errno));
+
+               if (errno == ENETUNREACH)
+                       __connman_timeserver_sync_next();
+
                return;
        }