topic Re: mDNS issue in MQX Software Solutions

mDNS issue

dz — Thu, 16 Aug 2012 07:02:42 GMT

Hey guys,

I am not able to send mDNS packet out. The address is "224.0.0.251". But if I send the same packet by using 255.255.255.255, then it works.

Can anyone help me on this? Thanks.

I am using MQX3.7.

Dan

Re: mDNS issue

BrianMoon — Tue, 22 Jan 2013 19:10:40 GMT

Hi Daniel,

I am working on a seemingly similar project. Have you been able to get your system to catch and interpret incoming multicast DNS probes? I'm listening on the mDNS multicast address, but something still isn't right because, so far, my system cannot hear any mDNS traffic.

-Brian

Re: mDNS issue

Luis_Garabo — Thu, 31 Jan 2013 03:38:37 GMT

Hi Daniel,

From the RTCS user's guide I can see that you will need to join a multicast group. Here is the example from the user's guide:

uint_32 sock;

struct ip_mreq group;

group.imr_multiaddr = multicast_ip_address;

group.imr_interface = local_ip_address;

error = setsockopt(sock, SOL_IGMP, RTCS_SO_IGMP_ADD_MEMBERSHIP, &group, sizeof(group));

I hope this helps.

Regards,

-Garabo