/*
* Copyright (c) 2015-2016, Christoph Engelbert (aka noctarius) and
* contributors. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.noctarius.tengi.server.impl.transport.http;
import com.noctarius.tengi.server.impl.ConnectionManager;
import com.noctarius.tengi.server.impl.transport.NettyNegotiator;
import com.noctarius.tengi.server.spi.negotiation.NegotiationContext;
import com.noctarius.tengi.server.spi.negotiation.NegotiationResult;
import com.noctarius.tengi.spi.serialization.Serializer;
import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelPipeline;
class Http2ProtocolNegotiator
implements NettyNegotiator {
@Override
public NegotiationResult handleProtocol(NegotiationContext context, ChannelHandlerContext ctx, ByteBuf buffer) {
if (buffer.readableBytes() < 5) {
// Not enough data to negotiate the protocol's magic header
return NegotiationResult.InsufficientBuffer;
}
// Read the magic header
int magic0 = buffer.getUnsignedByte(buffer.readerIndex());
int magic1 = buffer.getUnsignedByte(buffer.readerIndex() + 1);
int magic2 = buffer.getUnsignedByte(buffer.readerIndex() + 2);
int magic3 = buffer.getUnsignedByte(buffer.readerIndex() + 3);
if (magic0 == 'P' && magic1 == 'R' && magic2 == 'I' && magic3 == ' ') {
Serializer serializer = context.getSerializer();
ConnectionManager connectionManager = context.getConnectionManager();
ChannelPipeline pipeline = ctx.pipeline();
pipeline.addLast("http2-connection-processor", new Http2ConnectionProcessor(connectionManager, serializer));
return NegotiationResult.Successful;
}
return NegotiationResult.Continue;
}
}