On Sat, Jan 27, 2018 at 12:12 PM, Kris Thielemans < kris.f.thielem...@gmail.com> wrote:
> Dear all > > > > I have had no response to this. The problem continues with CMake 3.10.2. I > have no idea what causes this or how to fix it. Any help would be much > appreciated. > > > > Kris > > > > *From:* Kris Thielemans > > *Sent:* 19 December 2017 08:15 > *To:* cmake@cmake.org > *Subject:* downloading ftp URL problems > > > > Hi > > > > I’m try to get a file via ftp in EXTERNAL_PROJECT_ADD by specifying the > URL. This takes a long time on my Windows machine using CMake 3.10.1 (and > previous versions of CMake) as it needs multiple retries: > > > > 2> -- Using src='ftp://ftp.fftw.org/pub/fftw/fftw-3.3.5-dll64.zip' > > 2> -- Retrying... > > 2> -- Using src='ftp://ftp.fftw.org/pub/fftw/fftw-3.3.5-dll64.zip' > > 2> -- Retry after 5 seconds (attempt #2) ... > > 2> -- Using src='ftp://ftp.fftw.org/pub/fftw/fftw-3.3.5-dll64.zip' > > 2> -- Retry after 5 seconds (attempt #3) ... > > 2> -- Using src='ftp://ftp.fftw.org/pub/fftw/fftw-3.3.5-dll64.zip' > > 2> -- Retry after 15 seconds (attempt #4) ... > > 2> -- Using src='ftp://ftp.fftw.org/pub/fftw/fftw-3.3.5-dll64.zip' > > 2> -- Retry after 60 seconds (attempt #5) ... > > 2> -- Using src='ftp://ftp.fftw.org/pub/fftw/fftw-3.3.5-dll64.zip' > > -- [download 0% complete] > > ... > > > > When using on https link, the download starts immediately. > > > > Any suggestions why this happens, what I can do about it, or how I could > specify an initial sleep period to skip the first retries (but I’m not sure > if that’d help)? > > > > Some more detail: > > I’m using Windows 10 home with latest CMake installed via the msi. > > > > Using the URL in a browser (firefox) works fine but does need a ~5s wait > before I get the “save” dialog box. > > > > Checking the created download.cmake, it is just a loop with different > sleep_seconds doing the following > > > > Set(url “ftp://ftp.fftw.org/pub/fftw/fftw-3.3.5-dll64.zip”) > > execute_process(COMMAND "${CMAKE_COMMAND}" -E sleep "${sleep_seconds}") > > > > file( > > DOWNLOAD > > "${url}" "C:/Users/krisf/Documents/devel/fftw-3.3.5-dll64.zip" > > SHOW_PROGRESS > > # no TIMEOUT > > STATUS status > > LOG log > > ) > > > > Thanks for your help > > > CMake, as far as I know, uses libcurl to handle network transfers. You should compare cmake downloading with a curl build <https://curl.haxx.se/download.html>not with Firefox. Rumor has it that curl is part of Windows now. If the https link works instantly, why not use it also with cmake? Cheers, Cristian.
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