Consider adding property like supportsKeepAliveReconnectTimeout on client, when it is true then on client KeepAlive can stop to reconnect once reconnect timestamp great than the timeout, and stop the connection.

[Xiaohongt]

Currently when the network become disconnected, the client KeepAlive will try to reconnect again again forever, but on server side when the connection timeout, server close the connection, but the client still try to reconnect until the network get connected then client disconnect the connection.

If we add property like supportsKeepAliveReconnectTimeout on client, by default we can set it to false, so client still have the same old behavior.
When supportsKeepAliveReconnectTimeout set to true, then client KeepAlive can stop to reconnect once reconnect timestamp great than the timeout, and the timeout by default we can set the value same as the server connection timeout or bigger.

[DamianEdwards]

This can be achieved by app devs already by handling the reconnect event and calling connection.stop() themselves.