Lesson 8.3

headersSent decides the error action

Catch an unhandled dispatch failure in App.handle, write a generic response before emission, and destroy the affected socket after emission.

32 minsrc/app.js
What you will build
  • Explain what res.headersSent proves and why a second response is invalid.
  • Make App.handle resolve after every application-level handler failure.
  • Map an exposed HttpError to a generic status phrase without leaking its message or stack.
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