Ever since 2025, there has been an increasing number of in-depth problems involved in the seemingly resolvable coding interviews, which used to be very uncommon. It’s worthwhile noting that being unprepared for such topics but merely showing a problem-solving mindset may not always lead to a desirable passing-level result, given the extremely-competitive job market, while it’s also not recommended to learn by rote - memorizing the answer without thorough understanding could be easily recognized as imposter by the interviewers.

Discord Screen Challenge - Chat Server

Problem Statement

Original Problem Statement

Functional Requirements:

• The chat server should be capable of handling multiple clients connecting at the same time.
• Disconnection should be handled in a clean way.
• Should be able to receive and forward messages among clients (message is not echoed back to sender).

• DNS cannot mapping to subfolders

  DNS can only map to an host/IP address, but not path / port.

  What you ask for requires URL forwarding/redirecting, and is not about DNS records.

  You will need a web server to redirect by HTTP 301.