fa246bf7f2
itzTanos29
2026-07-12
Subject
CURLOPT_HEADERFUNCTION.md: document folded header unfolding
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docs/libcurl/opts/CURLOPT_HEADERFUNCTION.md+5 -4
| @@ -92,10 +92,11 @@ curl_easy_header(3). | |
| # LIMITATIONS | |
| - | libcurl does not unfold HTTP "folded headers" (deprecated since RFC 7230). A |
| - | folded header is a header that continues on a subsequent line and starts with |
| - | a whitespace. Such folds are passed to the header callback as separate ones, |
| - | although strictly they are continuations of the previous lines. |
| + | For legacy HTTP/1 "folded headers" (deprecated since RFC 7230), libcurl |
| + | unfolds the lines before calling the header callback. A folded header is a |
| + | header that continues on a subsequent line and starts with whitespace. The |
| + | callback gets the full single header with one whitespace between the lines. |
| + | This unfolding is done since 8.18.0. |
| # DEFAULT | |