NAME: DDS_DomainParticipantResourceLimitsQosPolicy::max_receive_ports

DESCRIPTION

RTI Connext DDS Micro listens for discovery data and user data on different transports as specified by the user. The DDS_DomainParticipantResourceLimitsQosPolicy::max_receive_ports resource-limit sets the maximum number of addresses that can be listened on. As a rule of thumb, this resource limit can be determined as follows:

A user-traffic unicast port counts as 1.
A meta-traffic unicast port counts as 1.
A user-traffic multicast address counts as 1.
A meta-traffic multicast address counts as 1.

EXAMPLES

Consider the typical case with the UDP transport, using unicast and multicast for discovery data and unicast for user data:

Discovery data needs two ports.
User data needs one port.

: Thus, this requires 3 resources.

Consider a case with the UDP transport, using unicast and multicast for discovery data and user data:

Discovery data needs two ports.
User data needs two ports.

: Thus, this requires 4 resources.

Consider a case with the UDP transport, using unicast and 2 multicast addresses each for discovery data and user data:

Discovery data needs three ports.
User data needs three ports.

: Thus, this requires 6 resources.

NOTES: The default value has been set to cover most cases. This resource-limit should only be changed if a lot of interfaces are supported (increase it) or if memory is extremely limited (decrease it).