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const Gio = imports.gi.Gio;
// Performs a connection test by first looking for an available connection, and
// performing a ping test with address parameters specified by hostname, scheme,
// and port. The test is performed asynchronously.
// successCallback, failureCallback, and errorCallback are optional parameters
// and are called in their relevent outcome cases. If the ping test completed,
// the userData will be passed to the callbacks. Additionally, the errorCallback
// will recieve the error as the first argument.
function doConnectionTestAsync(hostname, scheme, port, connectionSuccessCallback,
connectionFailureCallback,
errorCallback) {
let network_monitor = Gio.NetworkMonitor.get_default();
let network_address = new Gio.NetworkAddress({
'hostname': hostname,
'scheme': scheme,
'port': port
});
if (network_monitor.get_network_available()) {
network_monitor.can_reach_async(network_address, null,
function(userData, asyncResult) {
try {
let ping_success = network_monitor.
can_reach_finish(asyncResult, null);
if (ping_success && connectionSuccessCallback) {
connectionSuccessCallback(userData);
} else if (!ping_success && connectionFailureCallback) {
connectionFailureCallback(userData);
}
} catch (err) {
if (err instanceof Gio.ResolverError) {
connectionFailureCallback(userData);
} else if (errorCallback) {
errorCallback(err, userData);
}
}
});
} else if (connectionFailureCallback) {
connectionFailureCallback();
}
}
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