fix(http/file_server): Redirect non-canonical URL to canonical URL #3362
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part of #3361
This PR changes the
serveDir()
's behavior so that URLs are canonicalized.The current behavior and the behavior after the change are as follows.
/path/to/directory
🟢200 OK
🟡301
redirect to/path/to/directory/
/path/////to/////directory///////
🟢200 OK
🟡301
redirect to/path/to/directory/
/path/////to/////file.txt
🟢200 OK
🟡301
redirect to/path/to/file.txt
/path/to/file.txt/
🔴500 Internal Server Error
🟡301
redirect to/path/to/file.txt
/path/////to/////file.txt/
🔴500 Internal Server Error
🟡301
redirect to/path/to/file.txt
/path/////to/////file.txt/////
🔴500 Internal Server Error
🟡301
redirect to/path/to/file.txt
Also
serveDir()
currently has 7 nestings (function-try-if-if-try-if-if
). I cut this part out into a separate function.