io.netty.handler.codec.http.websocketx.extensions.compression

Class PerMessageDeflateClientExtensionHandshaker

java.lang.Object

io.netty.handler.codec.http.websocketx.extensions.compression.PerMessageDeflateClientExtensionHandshaker

All Implemented Interfaces:

WebSocketClientExtensionHandshaker

public final class PerMessageDeflateClientExtensionHandshaker
extends Object
implements WebSocketClientExtensionHandshaker

permessage-deflate handshake implementation.

Constructor Summary

Constructors

Constructor and Description
PerMessageDeflateClientExtensionHandshaker() Constructor with default configuration.
PerMessageDeflateClientExtensionHandshaker(int compressionLevel, boolean allowClientWindowSize, int requestedServerWindowSize, boolean allowClientNoContext, boolean requestedServerNoContext) Constructor with custom configuration.

Method Summary

Modifier and Type	Method and Description
WebSocketClientExtension	handshakeExtension(WebSocketExtensionData extensionData) Handshake based on server response.
WebSocketExtensionData	newRequestData() Return extension configuration to submit to the server.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

PerMessageDeflateClientExtensionHandshaker

public PerMessageDeflateClientExtensionHandshaker()

Constructor with default configuration.

PerMessageDeflateClientExtensionHandshaker

public PerMessageDeflateClientExtensionHandshaker(int compressionLevel,
                                                  boolean allowClientWindowSize,
                                                  int requestedServerWindowSize,
                                                  boolean allowClientNoContext,
                                                  boolean requestedServerNoContext)

Constructor with custom configuration.

Parameters:

compressionLevel - Compression level between 0 and 9 (default is 6).

allowClientWindowSize - allows WebSocket server to customize the client inflater window size (default is false).

requestedServerWindowSize - indicates the requested sever window size to use if server inflater is customizable.

allowClientNoContext - allows WebSocket server to activate client_no_context_takeover (default is false).

requestedServerNoContext - indicates if client needs to activate server_no_context_takeover if server is compatible with (default is false).

Method Detail

newRequestData

public WebSocketExtensionData newRequestData()

Description copied from interface: WebSocketClientExtensionHandshaker

Return extension configuration to submit to the server.

Specified by:

newRequestData in interface WebSocketClientExtensionHandshaker

Returns:

the desired extension configuration.

handshakeExtension

public WebSocketClientExtension handshakeExtension(WebSocketExtensionData extensionData)

Description copied from interface: WebSocketClientExtensionHandshaker

Handshake based on server response. It should always succeed because server response should be a request acknowledge.

Specified by:

handshakeExtension in interface WebSocketClientExtensionHandshaker

Parameters:

extensionData - the extension configuration sent by the server.

Returns:

an initialized extension if handshake phase succeed or null if failed.