How can I get the clients IP address from HTTP headers?

by

In addition to REMOTE_ADDR and HTTP_X_FORWARDED_FOR there are some other headers that can be set such as:

  • HTTP_CLIENT_IP
  • HTTP_X_FORWARDED_FOR can be comma delimited list of IPs
  • HTTP_X_FORWARDED
  • HTTP_X_CLUSTER_CLIENT_IP
  • HTTP_FORWARDED_FOR
  • HTTP_FORWARDED

I found the code on the following site useful:
http://www.grantburton.com/?p=97

More Related Contents:

  1. Are HTTP headers case-sensitive?
  2. Maximum on HTTP header values?
  3. Custom HTTP headers : naming conventions
  4. What’s the difference between Cache-Control: max-age=0 and no-cache?
  5. Uses of content-disposition in an HTTP response header
  6. ‘Refresh’ HTTP header
  7. Difference between Pragma and Cache-Control headers?
  8. What are all the possible values for HTTP “Content-Type” header?
  9. Ideal HTTP cache control headers for different types of resources
  10. Remove http referer
  11. Content-Length header with HEAD requests?
  12. Why is Cache-Control attribute sent in request header (client to server)?
  13. How to forward headers on HTTP redirect
  14. Correct way of getting Client’s IP Addresses from http.Request
  15. How does “304 Not Modified” work exactly?
  16. What is q=0.5 in Accept* HTTP headers?
  17. How big can a user agent string get?
  18. What is Cache-Control: private?
  19. Standard for adding multiple values of a single HTTP Header to a request or response
  20. What is a full specification of X-Forwarded-Proto HTTP header?
  21. Setting HTTP headers
  22. What HTTP response headers are required
  23. what characters are allowed in HTTP header values?
  24. What is HTTP “Host” header?
  25. Get client’s real IP address on Heroku
  26. How to evaluate http response codes from bash/shell script?
  27. What does HTTP/1.1 302 mean exactly?
  28. HTTP Cache Control max-age, must-revalidate
  29. Avoid caching of the http responses
  30. Keep-alive header clarification

Leave a Comment