[Bug 18243] New: wine iexplore.exe http://www.some.file.com/foobar.exe fails

http://bugs.winehq.org/show_bug.cgi?id=18243

Summary: wine iexplore.exe http://www.some.file.com/foobar.exe
                    fails
           Product: Wine
           Version: 1.1.20
          Platform: PC
               URL: ftp://ftp.gnupg.org/gcrypt/binary/sha1sum.exe
        OS/Version: Linux
            Status: NEW
          Keywords: download, source
          Severity: minor
          Priority: P2
         Component: programs
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=20753)
 --> (http://bugs.winehq.org/attachment.cgi?id=20753)
terminal output

While trying out various means of downloading files for my SoC project, I found
that UrlDownloadToFile doesn't support ftp protocol, only http.

No problem, I figured, we've got an IE implementation, I can use that!

but alas:

$ wine iexplore.exe ftp://ftp.gnupg.org/gcrypt/binary/sha1sum.exe
fails. The key line appears to be:
err:mshtml:before_async_open GetWineURL returned NULL

The same occurs for http protocol downloads.

Works fine on Windows. Full terminal output attached.