ExtensionHandshake (Undertow Core 2.3.13.Final API)

All Known Implementing Classes:

PerMessageDeflateHandshake
```
public interface ExtensionHandshake
```
Base interface for WebSocket Extension handshake.
It is responsible of the definition and negotiation logic of a WebSocket Extension. It interacts at the handshake phase.
It creates new instances of ExtensionFunction .

Author:

Lucas Ponce

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`WebSocketExtension`	`accept(WebSocketExtension extension)`	Validate if an extension request is accepted.
`ExtensionFunction`	`create()`	Create a new instance of the `ExtensionFunction` associated to this WebSocket Extension.
`java.lang.String`	`getName()`
`boolean`	`isIncompatible(java.util.List<ExtensionHandshake> extensions)`	Validate if current extension is compatible with previously negotiated in the server side.

- Method Detail
  - getName
```
java.lang.String getName()
```
    Returns:
    
    name of the WebSocket Extension
  - accept
```
WebSocketExtension accept(WebSocketExtension extension)
```
    Validate if an extension request is accepted.
    
    Parameters:
    
    extension - the extension request representation
    
    Returns:
    
    a new WebSocketExtension instance with parameters accepted; null in case extension request is not accepted
  - isIncompatible
```
boolean isIncompatible(java.util.List<ExtensionHandshake> extensions)
```
    Validate if current extension is compatible with previously negotiated in the server side.
    
    Parameters:
    
    extensions - a list of negotiated extensions
    
    Returns:
    
    true if current extension is compatible; false if current extension is not compatible
  - create
```
ExtensionFunction create()
```
    Create a new instance of the ExtensionFunction associated to this WebSocket Extension.
    
    Returns:
    
    a new instance ExtensionFunction