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authorJay Satiro <raysatiro@yahoo.com>2017-11-07 00:46:59 -0500
committerJay Satiro <raysatiro@yahoo.com>2017-11-09 01:36:50 -0500
commitfa64b0fc4bb8e25fd831db8b9328eeec5cc209c1 (patch)
treeaaeb3ccabd84d3f43f5bf1a98add42e4c2b7389e /docs/TheArtOfHttpScripting
parent19e66e53629de4e320a0ceafef687a861ec22fab (diff)
content_encoding: fix inflate_stream for no bytes available
- Don't call zlib's inflate() when avail_in stream bytes is 0. This is a follow up to the parent commit 19e66e5. Prior to that change libcurl's inflate_stream could call zlib's inflate even when no bytes were available, causing inflate to return Z_BUF_ERROR, and then inflate_stream would treat that as a hard error and return CURLE_BAD_CONTENT_ENCODING. According to the zlib FAQ, Z_BUF_ERROR is not fatal. This bug would happen randomly since packet sizes are arbitrary. A test of 10,000 transfers had 55 fail (ie 0.55%). Ref: https://zlib.net/zlib_faq.html#faq05 Closes https://github.com/curl/curl/pull/2060
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