skylineservers.dl.sourceforge.net: invalid host

[udbraumann]

When upgrading gnuplot from 5.0.5 to 5.0.6 is noticed this trouble:

--->  Computing dependencies for gnuplot
--->  Fetching archive for gnuplot
--->  Attempting to fetch gnuplot-5.0.6_1+aquaterm+luaterm+pangocairo+wxwidgets+x11.darwin_9.ppc.tbz2 from http://nue.de.packages.macports.org/gnuplot
--->  Attempting to fetch gnuplot-5.0.6_1+aquaterm+luaterm+pangocairo+wxwidgets+x11.darwin_9.ppc.tbz2 from http://lil.fr.packages.macports.org/gnuplot
--->  Attempting to fetch gnuplot-5.0.6_1+aquaterm+luaterm+pangocairo+wxwidgets+x11.darwin_9.ppc.tbz2 from http://osl.no.packages.macports.org/gnuplot
--->  Fetching distfiles for gnuplot
--->  Attempting to fetch gnuplot-5.0.6.tar.gz from http://nue.de.distfiles.macports.org/gnuplot/5.0.6
--->  Attempting to fetch gnuplot-5.0.6.tar.gz from http://skylineservers.dl.sourceforge.net/project/gnuplot/gnuplot/5.0.6
--->  Verifying checksums for gnuplot
Error: Checksum (rmd160) mismatch for gnuplot-5.0.6.tar.gz
Error: Checksum (sha256) mismatch for gnuplot-5.0.6.tar.gz
Error: Failed to checksum gnuplot: Unable to verify file checksums

The reason for this trouble is that skylineservers.dl.sourceforge.net apparently is no longer existing, and my provider in this case returns some HTML error message, which in turn is being downloaded under the misleading name gnuplot-5.0.6.tar.gz - then of course the checksum error is being issued.

Could you please remove skylineservers.dl.sourceforge.net from the list of download sites? For the moment I manually did the following for the moment:

cd /opt/local/var/macports/distfiles/gnuplot/5.0.6/
sudo wget https://distfiles.macports.org/gnuplot/gnuplot-5.0.6.tar.gz

And then continued upgrading...

[mojca (Mojca Miklavec)]

In 1cbb015b21836548fe6cc3ce86d36f6a3c282678/macports-ports:

Update the list of SourceForge mirrors

New mirrors:

• cytranet
• pilotfiber
• superb-sea2

Removed mirrors:

• heanet - ip resolves, but no files
• internode - forwards to netcologne
• vorboss - forwards to netcologne
• nbtelecom - Unknown host
• skylineservers - Unknown host
• skylink - Unknown host
• tcpdiag - Unknown host

Problematic:

• ncu - Request timeout

Other:

• ayera, dronedata, excellmedia listed on ​https://sourceforge.net/p/forge/documentation/Mirrors/ but forward to netcologne and netix
• netassist - not listed on SF, but works

Closes: #54036