NDDS_DISCOVERY_PEERS Environment Variable Format

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14.2.2 NDDS_DISCOVERY_PEERS Environment Variable Format

You can set the default value for the initial peers list in an environment variable named NDDS_DISCOVERY_PEERS. Multiple peer descriptor entries must be separated by commas. Table 14.1 NDDS_DISCOVERY_PEERS Environment Variable Examples shows some examples. The examples use an implied maximum participant ID of 4 unless otherwise noted. (If you need instructions on how to set environment variables, see the RTI Connext DDS Core Libraries Getting Started Guide).

Table 14.1 NDDS_DISCOVERY_PEERS Environment Variable Examples
NDDS_DISCOVERY_PEERS	Description of Host(s)
239.255.0.1	multicast
localhost	localhost
192.168.1.1	10.10.30.232 (IPv4)
FAA0::1	FAA0::0 (IPv6)
himalaya,gangotri	himalaya and gangotri
1@himalaya,1@gangotri	himalaya and gangotri (with a maximum participant ID of 1 on each host)
FAA0::0#localhost	FAA0::0#localhost (could be a UDPv4 transport plug-in registered at network address of FAA0::0) (IPv6)
udpv4://himalaya	himalaya accessed using the "udpv4" transport plug-in (IPv4)
udpv4://FAA0::0#localhost	localhost using the "udpv4" transport plug-in registered at network address FAA0::0
0/0/R #0/0/R	0/0/R (StarFabric)
starfabric://0/0/R starfabric://#0/0/R	0/0/R (StarFabric) using the "starfabric" (StarFabric) transport plug-ins
starfabric://FBB0::0#0/0/R	0/0/R (StarFabric) using the "starfabric" (StarFabric) transport plug-ins registered at network address FAA0::0
starfabric://	all unicast addresses accessed via the "starfabric" (StarFabric) transport plug-ins
shmem://FCC0::0	all unicast addresses accessed via the "shmem" (shared memory) transport plug-ins registered at network address FCC0::0