authenticate

Emitted when the proxy requires authentication.

If credentials are available, set the 'username' and 'password' properties on proxy and return true from the callback. This will cause the signal emission to stop, and librest will try to connect with these credentials If these credentials fail, the signal will be emitted again, with retrying set to true, which will continue until false is returned from the callback.

If you call pause on auth before returning, then you can the authentication credentials on the Proxy object asynchronously. You have to make sure that auth does not get destroyed with @ref. You can then unpause the authentication with unpause when everything is ready for it to continue.

Parameters: