dubbo QosHTTP1Detector 源码
dubbo QosHTTP1Detector 代码
文件路径:/dubbo-plugin/dubbo-qos/src/main/java/org/apache/dubbo/qos/pu/QosHTTP1Detector.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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 org.apache.dubbo.qos.pu;
import org.apache.dubbo.remoting.api.ProtocolDetector;
import org.apache.dubbo.remoting.buffer.ChannelBuffer;
public class QosHTTP1Detector implements ProtocolDetector {
private static boolean isHttp(int magic) {
return magic == 'G' || magic == 'P';
}
@Override
public Result detect(ChannelBuffer in) {
if (in.readableBytes() < 2) {
return Result.NEED_MORE_DATA;
}
final int magic = in.getByte(in.readerIndex());
// h2 starts with "PR"
if (isHttp(magic) && in.getByte(in.readerIndex()+1) != 'R' ){
return Result.RECOGNIZED;
}
return Result.UNRECOGNIZED;
}
}
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