URI starting with two slashes … how do they behave?

by

The resource you’re looking for is the RFC 3986.

See Section 4.2 and Section 5.4. Quoting from the latter:

Reference Resolution Examples

Within a representation with a well defined base URI of:

    http://a/b/c/d;p?q

a relative reference is transformed to its target URI as follows:

  "g:h"           =  "g:h"
  "g"             =  "http://a/b/c/g"
  "./g"           =  "http://a/b/c/g"
  "g/"            =  "http://a/b/c/g/"
  "/g"            =  "http://a/g"
  "//g"           =  "http://g"
  "?y"            =  "http://a/b/c/d;p?y"
  "g?y"           =  "http://a/b/c/g?y"
  "#s"            =  "http://a/b/c/d;p?q#s"
  "g#s"           =  "http://a/b/c/g#s"
  "g?y#s"         =  "http://a/b/c/g?y#s"
  ";x"            =  "http://a/b/c/;x"
  "g;x"           =  "http://a/b/c/g;x"
  "g;x?y#s"       =  "http://a/b/c/g;x?y#s"
  ""              =  "http://a/b/c/d;p?q"
  "."             =  "http://a/b/c/"
  "./"            =  "http://a/b/c/"
  ".."            =  "http://a/b/"
  "../"           =  "http://a/b/"
  "../g"          =  "http://a/b/g"
  "../.."         =  "http://a/"
  "../../"        =  "http://a/"
  "../../g"       =  "http://a/g"

This means that when the base URI is http://a/b/c/d;p?q and you use //g, the relative reference is transformed to http://g.

More Related Contents:

  1. Is it valid to replace http:// with // in a ?
  2. Absolute URLs omitting the protocol (scheme) in order to preserve the one of the current page
  3. Max parallel HTTP connections in a browser?
  4. What is the boundary in multipart/form-data?
  5. Is either GET or POST more secure than the other?
  6. Using PUT method in HTML form
  7. How to allow http content within an iframe on a https site [duplicate]
  8. How to escape hash character in URL
  9. Why is form enctype=multipart/form-data required when uploading a file?
  10. Cross Domain Form POSTing
  11. Two forward slashes in a url/src/href attribute [duplicate]
  12. WCF service to accept a post encoded multipart/form-data
  13. Example of multipart/form-data
  14. HTML5 download attribute not working when downloading from another server, even when Access-Control-Allow-Origin is set to all (*)
  15. Browser Caching of CSS files
  16. Network-Path Reference URI / Scheme relative URLs
  17. Why use protocol-relative URLs at all?
  18. Do HTTP POST methods send data as a QueryString?
  19. How do I do awesome refreshless page changes like GitHub do?
  20. How should I choose between GET and POST methods in HTML forms?
  21. How to avoid sending input fields which are hidden by display:none to a server?
  22. Large file upload though html form (more than 2 GB)
  23. What characters must be escaped in an HTTP query string?
  24. Valid content-type for XML, HTML and XHTML documents
  25. How to download HTTP directory with all files and sub-directories as they appear on the online files/folders list?
  26. Can’t show some websites in iframe tag
  27. Adding http request header to a a href link [duplicate]
  28. create a domain name pointing to an IP of port different than 80
  29. How to send mail with a Subject using a Mailto URL?
  30. WebSocket server implementations for Delphi [closed]

Leave a Comment