src/main/java/com/alipay/remoting/ProcessorManager.java
public RemotingProcessor<?> getProcessor(CommandCode cmdCode) {
        RemotingProcessor<?> processor = this.cmd2processors.get(cmdCode);
        if (processor != null) {
            return processor;
        }
        return this.defaultProcessor;
    }
public RemotingProcessor<?> getProcessor(CommandCode cmdCode) {
        RemotingProcessor<?> processor = this.cmd2processors.get(cmdCode);
        if (processor != null) {
            return processor;
        }
        return this.defaultProcessor;
    }
Get the specific processor with command code of cmdCode if registered, otherwise the default processor is returned.

@param cmdCode
@return