there went 6 hours of debugging why my applications are getting out of memory errors when trying to connect to my inside-docker-running kafka. they were getting an actual answer from antigravity but because of the first 4 bytes of the message, the clients were thinking a huuuuge message is coming and tried to allocate byte array memory for that. such an unthoughtful decision to actually use one of the most common used ports for a developer when developing an actual IDE for DEVELOPERS.