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[ecf-dev] service priority and weight
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Hi,
what are the semantics behind priority and weight? I'm trying to map
them to SLP and improve the Javadoc in the process. [1] defines them as:
Priority: The priority of this target host. A client MUST attempt to
contact the target host with the lowest-numbered priority it can reach;
target hosts with the same priority SHOULD be tried in an order defined
by the weight field. The range is 0-65535. This is a 16 bit unsigned
integer in network byte
Weight: A server selection mechanism. The weight field specifies a
relative weight for entries with the same priority. Larger weights
SHOULD be given a proportionately higher probability of being selected.
The range of this number is 0-65535. This is a 16 bit unsigned integer
in network byte order. Domain administrators SHOULD use Weight 0 when
there isn't any server selection to do, to make the RR easier to read
for humans (less noisy). In the presence of records containing weights
greater than 0, records with weight 0 should have a very small chance of
being selected.
Do we want to keep the same meaning? SLP does not define such properties
but we could work around the protocol limitation by moving them into ECF
service properties which are read from the generic SLP properties.
Cheers
Markus
[1] http://www.ietf.org/rfc/rfc2782.txt
