Apparatus and methods for requesting an event notification over a network

A notification server configured for providing a notification of an occurrence of an event, the notification server comprising:

• a network interface;
• and
• an executable resource, wherein:
• the network interface is configured to receive an event notification string comprising event information that identifies at least one feature of the event, identification information that identifies an executable resource capable of processing the event information, and at least one of an event type, an event value, an application session identifier, and a parameter;
• the executable resource is configured to determine notification information that identifies a device to be notified of the occurrence of the event based on the event notification string and to provide through the network interface an event notification to the device based on the notification information, and wherein the executable resource accesses an application-state data record based on the application session identifier;
• the network interface provides an event identifier generated by the executable resource based on the event notification string and the notification information;
• the network interface receives a query request based on the event identifier that requests a status of the event notification;
• and
• the executable resource provides through the network interface a response to the query request that indicates the status of the event notification.