| | Class | Description |
| | FileReference | |
| | Responder | |
| | Socket | |
| | URLLoader |
The URLLoader class downloads data from a URL as text, binary data, or URL-encoded variables. |
| | URLLoaderDataFormat |
The URLLoaderDataFormat class provides values that specify how downloaded data is received. |
| | URLRequest |
The URLRequest class captures all of the information in a single HTTP request. |
| | URLRequestDefaults |
The URLRequestDefaults class includes static properties that you can set to define default values for the properties of the URLRequest class. |
| | URLRequestHeader |
A URLRequestHeader object encapsulates a single HTTP request header and consists of a name/value pair. |
| | URLRequestMethod |
The URLRequestMethod class provides values that specify whether the URLRequest object
should use the POST method or the GET method when sending data to a server. |
| | URLStream |
The URLStream class provides low-level access to downloading URLs. |
| | URLVariables |
The URLVariables class allows you to transfer variables between an application and a server. |
