If it’s necessary for you to debug HTTP server (to find a reason of some problem) and would like to watch HTTP headers, please use Firefox addon:
My name is Stefan, I'm the admin of LinuxScrew. I am a full-time Linux/Unix sysadmin, a hobby Python programmer, and a part-time blogger. I post useful guides, tips, and tutorials on common Linux and Programming issues. Feel free to reach out in the comment section.