About RemotingCommand.decode parse header is a repeated calculation

[liweiyuan]

in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation

[jasonjavaYY]

in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation

This is not a repeated operation. This operation is to solve the problem of java coding. You can search for "the meaning of doing 0xFFFFF & operation" with the browser~

[The-Gamer-01]

in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation

This is not a repeated operation. This operation is to solve the problem of java coding. You can search for "the meaning of doing 0xFFFFF & operation" with the browser~

Can you tell me the meaning of doing 0xFFFFFF & operation？I tried to search the browser but didn't find the relevant results.please.

[ShadowySpirits]

in org.apache.rocketmq.remoting.protocol.RemotingCommand.decode method，Through ByteBuf calculate command header is a repeated operation

This is not a repeated operation. This operation is to solve the problem of java coding. You can search for "the meaning of doing 0xFFFFF & operation" with the browser~

Can you tell me the meaning of doing 0xFFFFFF & operation？I tried to search the browser but didn't find the relevant results.please.

We use byte(0-255) to transfer data via network. But java doesn't support unsigned int, so we should use 0xFFFFFF & operation to get unsigned int. See this blog (Chinese ver) for more info about how could we do this.