Keepalive and Keepaliveprovider

Keepalive will use a timeout to periodically wake, broadcast a Keepalive event on the root scope, and optionally make an $http request. By default, the Idle service will stop and start Keepalive when a user becomes idle or returns from idle, respectively. It is also started automatically when Idle.watch() is called. This can be disabled by configuring the IdleProvider.

KeepaliveProvider

The following methods can be used to configure the Keepalive service:

• http(value) (string or object, default is null): If configured, these options will be used to issue a request using $http. If the value is null, no HTTP request will be issued. You can specify a string, which it will assume to be a URL to a simple GET request. Otherwise, you can use the same options $http takes. However, cache will always be false.
• interval(seconds) (integer, default is 10 minutes): Must be greater than 0. This specifies how often the Keepalive event is triggered and the HTTP request is issued.

Keepalive

• start(): Starts pinging periodically until stop() is called.
• stop(): Stops pinging.
• ping(): Performs one ping only.
• setInterval(seconds): Changes the interval value at runtime. You will need to restart the pinging process by calling start() manually for the changes to be reflected.

Events

The following events are issued on the root scope:

• Keepalive (no arguments): Each time a ping is to be made.
• KeepaliveResponse (event, data, status): Each time an HTTP request has completed or failed when pinging.