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From what I saw, URI

  • Lowercases the scheme.
  • Lowercases the domain name. (1)
  • Removes the port if it's the default. (2)
  • Removes port fields consisting of just ':'. (3)
  • Adds trailing '/' if no path or query is specified. (6, partial)

  • Doesn't do (4), (5), (7) and (8), but easy to do.
  • Doesn't do (9) and (10), but might not be possible.
  • Doesn't set the path to '/' if no path is specified and a query is specified. (6, partial)
  • Doesn't normalize IP addresses in to dotted form.
  • Doesn't remove the trailing '.' from domain names, if any.
  • Doesn't touch the query.

In reply to Re^2: Normalizing URLs by ikegami
in thread Normalizing URLs by Anonymous Monk

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