zzjcool opened a new issue, #8868: URL: https://github.com/apache/rocketmq/issues/8868
### Before Creating the Bug Report - [X] I found a bug, not just asking a question, which should be created in [GitHub Discussions](https://github.com/apache/rocketmq/discussions). - [X] I have searched the [GitHub Issues](https://github.com/apache/rocketmq/issues) and [GitHub Discussions](https://github.com/apache/rocketmq/discussions) of this repository and believe that this is not a duplicate. - [X] I have confirmed that this bug belongs to the current repository, not other repositories of RocketMQ. ### Runtime platform environment Linux Fedora ### RocketMQ version Git commit id: ecb45bb90dba46bb35b51520b01890c9c47ba55c ### JDK Version _No response_ ### Describe the Bug **Description:** The following message request codes exceed the maximum value for a short integer (32767), resulting in an overflow. The original values are as follows: ```java public static final int POP_MESSAGE = 200050; public static final int ACK_MESSAGE = 200051; public static final int BATCH_ACK_MESSAGE = 200151; public static final int PEEK_MESSAGE = 200052; public static final int CHANGE_MESSAGE_INVISIBLETIME = 200053; public static final int NOTIFICATION = 200054; public static final int POLLING_INFO = 200055; ``` **Actual Values After Overflow:** Due to the overflow, the actual values of these constants are: ```java public static final int POP_MESSAGE = 3442; public static final int ACK_MESSAGE = 3443; public static final int BATCH_ACK_MESSAGE = 3543; public static final int PEEK_MESSAGE = 3444; public static final int CHANGE_MESSAGE_INVISIBLETIME = 3445; public static final int NOTIFICATION = 3446; public static final int POLLING_INFO = 3447; ``` **Proposed Solution:** To prevent overflow, we need to ensure that all message codes remain within the valid range of short integers. Consider using values less than 32767 or refactoring the code to use a larger data type (e.g., `int` or `long`) if necessary. ### Steps to Reproduce rocketMQProtocolDecode code: https://github.com/apache/rocketmq/blob/ecb45bb90dba46bb35b51520b01890c9c47ba55c/remoting/src/main/java/org/apache/rocketmq/remoting/protocol/RocketMQSerializable.java#L205C1-L209 ### What Did You Expect to See? a short int ### What Did You See Instead? <img width="373" alt="image" src="https://github.com/user-attachments/assets/010961c1-928d-46e2-b746-505165439d09";> ### Additional Context _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@rocketmq.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
