| Package | Description | 
|---|---|
| io.netty.handler.codec.http.websocketx.extensions | Encoder, decoder, handshakers to handle
 WebSocket Extensions. | 
| io.netty.handler.codec.http.websocketx.extensions.compression | Encoder, decoder, handshakers to handle most common WebSocket Compression Extensions. | 
| Constructor and Description | 
|---|
| WebSocketClientExtensionHandler(WebSocketClientExtensionHandshaker... extensionHandshakers)Constructor | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DeflateFrameClientExtensionHandshakerperframe-deflate
 handshake implementation. | 
| class  | PerMessageDeflateClientExtensionHandshakerpermessage-deflate
 handshake implementation. | 
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