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Fix downloads with chunked responses if cURL is not installed #397

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commented Mar 6, 2019

Reported here:

This happens when GitHub sends a Transfer-Encoding: chunked response for an upgrade zip, which it sometimes does and sometimes doesn't, and when the PHP cURL extension is not present on the site's server.

In this case, the fsockopen transport of the underlying Requests library is used. This transport does not support chunked responses, which is a known issue: rmccue/Requests#189

This PR is a workaround which drops the HTTP protocol version back down to 1.0 in this case, from

@nylen nylen added this to the v1.1.0 milestone Jun 27, 2019


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commented Jun 27, 2019

Moving to 1.1.0 milestone. Before merging, evaluate impact of this change on existing sites (how many are currently experiencing this error?)


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commented Jul 3, 2019

Slack discussion about this:


  • This is a hack
  • Should be very few users affected
  • The same issue may re-appear in v2 when we add our plugin directory which also serves downloads from GitHub

An alternative would be to require the curl transport in ClassicPress v2. This would fix this issue, while also allowing for some nice code simplifications and the ability to implement a custom CA for our plugin directory.

Labeling as "postponed until v2" so we can revisit this then.

@nylen nylen removed this from the v1.1.0 milestone Jul 3, 2019

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