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add section on registration lifetime

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vyzo
2018-04-12 10:06:28 +03:00
parent 6dbbd4b36b
commit 219dc409c1
1 changed files with 15 additions and 2 deletions
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17
rendezvous/README.md
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@@ -53,8 +53,7 @@ clients.
The rendezvous protocol provides facilities for real-time peer
discovery within application specific namespaces. Peers connect to the
rendezvous point and register their presence in one or more
namespaces. Registrations persist until the peer disconnects or
explicitly unregisters.
namespaces.
Peers registered with the rendezvous point can be discovered by other
nodes by querying the rendezvous point. The query specifies the
@@ -62,6 +61,19 @@ namespace for limiting application scope and optionally a maximum
number of peers to return. The namespace can be omitted in the query,
which asks for all peers registered to the rendezvous point.
### Registration Lifetime
Registration lifetime is controlled by an optional TTL parameter in
the `REGISTER` message. If a TTL is specified, then the registration
persists until the TTL expires. If no TTL was specified, then the
registration persists while the issuing peer is still connected to the
rendezvous point.
Peers can refresh their registrations at any time with a new
`REGISTER` message; the TTL of the new message supersedes previous
registrations. Peers can also cancel existing registrations at any
time with an explicit `UNREGISTER` message.
### Interaction
Clients `A` and `B` connect to the rendezvous point `R` and register for namespace
@@ -113,6 +125,7 @@ message Message {
message Register {
optional string ns = 1;
optional PeerInfo peer = 2;
optional uint ttl = 3;
}
message Unregister {