nats-io / gnatsd / 1751

91%

Pull #606

travis-ci

[CHANGED] Server notifies clients when server rejoins cluster

When the option Cluster.NoAdvertise is false, a server will send
an INFO protocol message to its client when a server has joined
the cluster.

Previously, the protocol would be sent only if the
joining server's "client URLs" (the addresses where clients connect
to) were new. It will now be sent regardless if the server joins
(for the first time) or rejoins the cluster.

Clients are still by default invoking the DiscoveredServersCB callback
only if they themselves detect that new URLs were added. A separate
PR may be filled to client libraries repo to be able to invoke
the callback anytime an async INFO protocol is received.

Based on @madgrenadier PR #597.

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