[lwip-users] dhcp and mdns responder

[Manu Abraham]

Greetings,

Trying to get mdns from lwip/apps working.

I have the following code running:

void netpnp_thread(void *arg)
{
    struct netif *netif = arg;

    xSemaphoreTake(sem_mdns, portMAX_DELAY);
    osDelay(1000);

    igmp_report_groups(netif);
    mdns_example_init();

    while (1);
}


With that mdns works with the mdns_example_init() shamelessly copied
from mdns_example.c, DHCP client has already created a multicast group
with address 224.0.0.1

This is verified from the igmp debug log.

My question is thus; How and when should an announcement be done ?
Does the browser application request the announcement request ?
If so, how should that be handled ?


Thanks,

Manu


 (292) StartThread:
igmp_init: initializing
 (257) Netif_Config: Configuring Network
igmp_start: starting IGMP processing on if 24000234
igmp_lookup_group: allocated a new group with address 224.0.0.1 on if 24000234
 (342) dhcp_thread:
 DHCP state       : 132
 DHCP state       : SELECTING
 DHCP state       : CHECKING
igmp_report_groups: sending IGMP reports on if 24000234
 DHCP state       : BOUND

 IPv4 Address     : 192.168.1.33
 IPv4 Subnet mask : 255.255.255.0
 IPv4 Gateway     : 192.168.1.1

 Lease period: 86400s, Renew in: 43200s, Rebind in: 75600s

 (330) print_dhcp_state: DHCP Bound
igmp_report_groups: sending IGMP reports on if 24000234
igmp_lookup_group: allocated a new group with address 224.0.0.251 on if 24000234
igmp_joingroup_netif: join to new group: 224.0.0.251
igmp_timeout: report membership for group with address 224.0.0.251 on
if 24000234
MDNS: Responding with A record
MDNS: Responding with SRV record
MDNS: Responding with TXT record
MDNS: Sending packet, len=106, unicast=0
MDNS: Responding with A record
MDNS: Responding with SRV record
MDNS: Responding with TXT record
MDNS: Sending packet, len=106, unicast=0
MDNS: Responding with A record
MDNS: Responding with SRV record
MDNS: Responding with TXT record
MDNS: Sending packet, len=106, unicast=0
MDNS: Responding with A record
MDNS: Responding with v4 PTR record
MDNS: Responding with service type PTR record
MDNS: Responding with service name PTR record
MDNS: Responding with SRV record
MDNS: Responding with TXT record
MDNS: Sending packet, len=184, unicast=0
mdns status[netif 0]: 1