icodening commented on issue #13375:
URL: https://github.com/apache/dubbo/issues/13375#issuecomment-1813907122
看代码后发现问题所在。
````java
handlers.add(new ChannelHandlerPretender(new Http2MultiplexHandler(new
ChannelDuplexHandler())));
handlers.add(new ChannelHandlerPretender(new
TripleGoAwayHandler()));//此handler没有将PingAck传递给TriplePingPongHandler导致连接被关闭
handlers.add(new ChannelHandlerPretender(new
TriplePingPongHandler(UrlUtils.getCloseTimeout(url))));
handlers.add(new ChannelHandlerPretender(new TripleTailHandler()));
````
以下是`TripleGoAwayHandler`的源码，并没有将Ping Ack传递给后续handler处理
````java
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) throws
Exception {
if (msg instanceof Http2GoAwayFrame) {
final ConnectionHandler connectionHandler = (ConnectionHandler)
ctx.pipeline().get(Constants.CONNECTION_HANDLER_NAME);
if (logger.isInfoEnabled()) {
logger.info("Receive go away frame of " +
ctx.channel().localAddress() + " -> " + ctx.channel().remoteAddress() + " and
will reconnect later.");
}
connectionHandler.onGoAway(ctx.channel());
}
ReferenceCountUtil.release(msg);
}
````
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