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Code Issues Releases Wiki Activity

Accept client_no_context_takeover in websockets

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Doesn't fix #695, but Good Enough(TM).
This commit is contained in:
Jonathan Coates 2021-07-25 16:40:27 +01:00
parent d50db8a6f3
commit 227b444d81
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2 changed files with 39 additions and 2 deletions
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3
src/main/java/dan200/computercraft/core/apis/http/websocket/Websocket.java
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@ -28,7 +28,6 @@ import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker;
import io.netty.handler.codec.http.websocketx.WebSocketClientHandshakerFactory;
import io.netty.handler.codec.http.websocketx.WebSocketVersion;
import io.netty.handler.codec.http.websocketx.extensions.compression.WebSocketClientCompressionHandler;
import io.netty.handler.ssl.SslContext;
import java.lang.ref.WeakReference;
@ -160,7 +159,7 @@ public class Websocket extends Resource<Websocket>
p.addLast(
new HttpClientCodec(),
new HttpObjectAggregator( 8192 ),
WebSocketClientCompressionHandler.INSTANCE,
WebsocketCompressionHandler.INSTANCE,
new WebsocketHandler( Websocket.this, handshaker, options )
);
}

38
src/main/java/dan200/computercraft/core/apis/http/websocket/WebsocketCompressionHandler.java Normal file
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@ -0,0 +1,38 @@
/*
* This file is part of ComputerCraft - http://www.computercraft.info
* Copyright Daniel Ratcliffe, 2011-2021. Do not distribute without permission.
* Send enquiries to dratcliffe@gmail.com
*/
package dan200.computercraft.core.apis.http.websocket;
import io.netty.channel.ChannelHandler;
import io.netty.handler.codec.compression.ZlibCodecFactory;
import io.netty.handler.codec.http.websocketx.extensions.WebSocketClientExtensionHandler;
import io.netty.handler.codec.http.websocketx.extensions.compression.DeflateFrameClientExtensionHandshaker;
import io.netty.handler.codec.http.websocketx.extensions.compression.PerMessageDeflateClientExtensionHandshaker;
import io.netty.handler.codec.http.websocketx.extensions.compression.WebSocketClientCompressionHandler;
import static io.netty.handler.codec.http.websocketx.extensions.compression.PerMessageDeflateServerExtensionHandshaker.MAX_WINDOW_SIZE;
/**
* An alternative to {@link WebSocketClientCompressionHandler} which supports the {@literal client_no_context_takeover}
* extension. Makes CC <em>slightly</em> more flexible.
*/
@ChannelHandler.Sharable
final class WebsocketCompressionHandler extends WebSocketClientExtensionHandler
{
public static final WebsocketCompressionHandler INSTANCE = new WebsocketCompressionHandler();
private WebsocketCompressionHandler()
{
super(
new PerMessageDeflateClientExtensionHandshaker(
6, ZlibCodecFactory.isSupportingWindowSizeAndMemLevel(), MAX_WINDOW_SIZE,
true, false
),
new DeflateFrameClientExtensionHandshaker( false ),
new DeflateFrameClientExtensionHandshaker( true )
);
}
}