ClearTextHttp2ServerUpgradeHandler can be merged with inner PriorKnowledgeHandler (#10008)
Motivation: ClearTextHttp2ServerUpgradeHandler is currently more complex then needed. We can simplify it by directly implement the prior-knowledge logic as part of the handler. Modifications: Merge inner PriorKnowledgeHandler logic into ClearTextHttp2ServerUpgradeHandler by extending ByteToMessageDecoder directly Result: Cleaner code and less pipeline operations
This commit is contained in:
parent
2a5118f824
commit
e7f291629b
@ -18,7 +18,6 @@ package io.netty.handler.codec.http2;
|
||||
import io.netty.buffer.ByteBuf;
|
||||
import io.netty.buffer.ByteBufUtil;
|
||||
import io.netty.channel.ChannelHandler;
|
||||
import io.netty.channel.ChannelHandlerAdapter;
|
||||
import io.netty.channel.ChannelHandlerContext;
|
||||
import io.netty.handler.codec.ByteToMessageDecoder;
|
||||
import io.netty.handler.codec.http.HttpServerCodec;
|
||||
@ -39,7 +38,7 @@ import static io.netty.util.internal.ObjectUtil.checkNotNull;
|
||||
* prior knowledge or not.
|
||||
*/
|
||||
@UnstableApi
|
||||
public final class CleartextHttp2ServerUpgradeHandler extends ChannelHandlerAdapter {
|
||||
public final class CleartextHttp2ServerUpgradeHandler extends ByteToMessageDecoder {
|
||||
private static final ByteBuf CONNECTION_PREFACE = unreleasableBuffer(connectionPrefaceBuf());
|
||||
|
||||
private final HttpServerCodec httpServerCodec;
|
||||
@ -66,16 +65,14 @@ public final class CleartextHttp2ServerUpgradeHandler extends ChannelHandlerAdap
|
||||
@Override
|
||||
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
|
||||
ctx.pipeline()
|
||||
.addBefore(ctx.name(), null, new PriorKnowledgeHandler())
|
||||
.addBefore(ctx.name(), null, httpServerCodec)
|
||||
.replace(this, null, httpServerUpgradeHandler);
|
||||
.addAfter(ctx.name(), null, httpServerUpgradeHandler)
|
||||
.addAfter(ctx.name(), null, httpServerCodec);
|
||||
}
|
||||
|
||||
/**
|
||||
* Peek inbound message to determine current connection wants to start HTTP/2
|
||||
* by HTTP upgrade or prior knowledge
|
||||
*/
|
||||
private final class PriorKnowledgeHandler extends ByteToMessageDecoder {
|
||||
@Override
|
||||
protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Exception {
|
||||
int prefaceLength = CONNECTION_PREFACE.readableBytes();
|
||||
@ -97,7 +94,6 @@ public final class CleartextHttp2ServerUpgradeHandler extends ChannelHandlerAdap
|
||||
ctx.fireUserEventTriggered(PriorKnowledgeUpgradeEvent.INSTANCE);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* User event that is fired to notify about HTTP/2 protocol is started.
|
||||
|
Loading…
Reference in New Issue
Block a user