Edward Qiu

Computer Science Student

Hacker101 - The Web In Depth Notes

Disclaimer: These notes are not comprehensive. I only jotted down what was useful for me and I may include other research I’ve done while going through the video.

HTTP Request Structure

  • CRLF sequence is a carriage return followed by a line feed
  • Header is separated from the body by 2 CRLF sequences
  • URL Encoding for CRLF:
    • %0d = CR
    • %0a = LF
  • CRLF Injection

HTTP Common Request Headers


Takeaway Exercise



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