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Votes

1

Found in

2020.3.47f1

2021.3.24f1

2022.2.17f1

2023.1.0b14

2023.2.0a12

Issue ID

UUM-34301

Regression

No

"HTTP/1.1 404 Not Found" error is thrown when trying to copy a file using UnityWebRequest with a "#" symbol in the URL

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Reproduction steps:
1. Open the attached “My project (14).zip“ project
2. Open the “SampleScene” scene
3. Enter Play mode and observe the Console

Expected result: No errors are thrown
Actual result: “HTTP/1.1 404 Not Found UnityEngine.Debug:LogError (object)” error is thrown

Reproducible with: 2020.3.47f1, 2021.3.24f1, 2022.2.17f1, 2023.1.0b14, 2023.2.0a12

Reproduced on: Windows 11
Not reproduced on: macOS Monterey 12.6 (Intel)

Note: Also reproducible in Build 

  1. Resolution Note:

    The '#' symbol has a special meaning in URL - a fragment. It denotes that section in file the client should "scroll to", like in this URL:
    https://developer.android.com/reference/android/app/NotificationManager#IMPORTANCE_LOW

    So UnityWebRequest is actually trying to download a file pointed by URI up to the '#', we can't possibly have any scroll support as we don't handle presentation.

    The ASCII code for '#' is 23, so replacing '#' with '%23' should work.
    You may also try passing the full file path to System.Uri, hopefully it escapes it correctly. UWR does support Uri as an alternative to string.



    file:// not necessarily means local file, it can be a file on a network share, at least on Windows we should support that.
    As long as passing System.Uri works, we don't intend any more complex support for URIs passed as string. It is advised to use Uri class, as there are many corner cases and often made mistakes with string, for example the mentioned "file:///" is wrong, it is the correct thing to prepend on Windows, but not on other OSes.

Comments (1)

  1. EP-Toushirou

    Apr 27, 2023 09:29

    how about add support for 'file:///', because it's an obviously local file.
    or explain on script api document of 'UnityWebRequest.Get', let more developer know.
    Thanks.

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