diff options
Diffstat (limited to 'nuttx/net/udp/udp_input.c')
| -rw-r--r-- | nuttx/net/udp/udp_input.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/nuttx/net/udp/udp_input.c b/nuttx/net/udp/udp_input.c index 5a78baa1f..99b16761f 100644 --- a/nuttx/net/udp/udp_input.c +++ b/nuttx/net/udp/udp_input.c @@ -127,7 +127,21 @@ int udp_input(FAR struct net_driver_s *dev) else #endif { - /* Demultiplex this UDP packet between the UDP "connections". */ + /* Demultiplex this UDP packet between the UDP "connections". + * + * REVISIT: The logic here expects either a single receive socket or + * none at all. However, multiple sockets should be capable of + * receiving a UDP datagram (multicast reception). This could be + * handled easily by something like: + * + * for (conn = NULL; conn = udp_active (pbuf, conn); ) + * + * If the callback logic that receives a packet responds with an + * outgoing packet, then it will over-write the received buffer, + * however. recvfrom() will not do that, however. We would have to + * make that the rule: Recipients of a UDP packet must treat the + * packet as read-only. + */ conn = udp_active(pbuf); if (conn) |