| Symptom | Likely Cause | Fix | |---------------------------------------------------|--------------------------------------------|------------------------------------------| | EADDRINUSE on port 11501 | Another process holds exclusive bind | Find and kill process or switch ports | | Browser loads but gets 503 or mismatched content | Two processes fighting (rare) | Only possible if exclusive not enforced | | Docker container fails to publish 11501 | Host process has exclusive lock | Stop host process or change host port | | Windows Event 15021 | HTTP.SYS exclusive reservation conflict | Delete reservation: netsh http delete urlacl |
This exclusivity nurtures craftsmanship. It’s a workshop where rough edges are celebrated because they reveal process. The port number is less about network layering and more about authorship: “I built this, I run this, come see if you know how.” localhost11501 exclusive
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