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Don't retry on "unsupported protocol" error

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When encountering an unsupported protocol, there's no need to retry.
Chances are, it won't suddenly be supported between retry attempts;
error instead. Otherwise, you see something like the following:

    $ nix-env -i -f git://git@github.com/foo/bar
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 335 ms
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 604 ms
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 1340 ms
    warning: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1); retrying in 2685 ms

With this change, you now see:

    $ nix-env -i -f git://git@github.com/foo/bar
    error: unable to download 'git://git@github.com/foo/bar': Unsupported protocol (1)

(cherry picked from commit c976cb0b8a)
Signed-off-by: Domen Kožar <domen@dev.si>
This commit is contained in:
Cole Helbling 2020-04-04 12:27:39 -07:00 • committed by Eelco Dolstra
parent e914cfb06f
commit 7fee49ef37
1 changed files with 1 additions and 0 deletions
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src/libstore/download.cc
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@ -391,6 +391,7 @@ struct CurlDownloader : public Downloader
case CURLE_SSL_CACERT_BADFILE: case CURLE_SSL_CACERT_BADFILE:
case CURLE_TOO_MANY_REDIRECTS: case CURLE_TOO_MANY_REDIRECTS:
case CURLE_WRITE_ERROR: case CURLE_WRITE_ERROR:
case CURLE_UNSUPPORTED_PROTOCOL:
err = Misc; err = Misc;
break; break;
default: // Shut up warnings default: // Shut up warnings