Reinventing the cat

What this POSIX networking sequencing question tests

This is an easy networking question that checks whether you understand the correct lifecycle of a socket-based HTTP client. It's the kind of question that screens for basic competence with low-level socket APIs before moving into more complex protocol or performance work.

To answer it, you need to know the proper order of POSIX socket function calls: from socket creation through connection establishment, request transmission, response reading, and cleanup. The question rewards familiarity with how socket(), connect(), send(), recv(), and close() fit together in a real workflow.

• Socket creation and address families
• TCP handshake and connection semantics
• Blocking I/O and the send/receive cycle
• Resource cleanup and file descriptor management