[MacPorts] #61315: Distfile fetch for python39 hangs on 10.5

[MacPorts]

#61315: Distfile fetch for python39 hangs on 10.5
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  Reporter:  fhgwright  |      Owner:  (none)
      Type:  defect     |     Status:  new
  Priority:  Normal     |  Milestone:
 Component:  base       |    Version:  2.6.3
Resolution:             |   Keywords:
      Port:  python39   |
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Comment (by ryandesign):

 Replying to [comment:2 fhgwright]:
 > But it tries the upstream source first, and if that hangs rather than
 failing, it never gets the chance to move on to try the mirror.

 MacPorts pings all available sites and tries them in an order that is
 supposed to result in the closest server being tried first. For you, the
 nearest server is apparently www.python.org.

 You can add www.python.org to host_blacklist in macports.conf to tell
 MacPorts that you never want it to try to use that host.

 > There are actually at least two bugs here - the hang, and the lack of a
 timeout.

 MacPorts has a fetch timeouts. See https://github.com/macports/macports-
 base/blob/master/src/pextlib1.0/curl.c#L57-L60

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Ticket URL: <https://trac.macports.org/ticket/61315#comment:4>
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