Sockets on Localhost
Tiny socket demos bound to 127.0.0.1 only.
1. TCP Mental Model
Connect vs listen.
15 min
+20 XP
2. Bind to Loopback
Never 0.0.0.0 for beginner labs.
15 min
+20 XP
3. Error Handling
Connection refused is normal.
15 min
+20 XP
4. Lab: Localhost Port Check
connect_ex to 127.0.0.1 ports.
25 min
+20 XP
5. Quiz — Sockets Scope
Localhost-only ethics check.
10 min
+20 XP