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| author | Daniel Stenberg <daniel@haxx.se> | 2019-05-03 15:44:49 +0200 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2019-05-03 23:21:07 +0200 |
| commit | 139202bb68dcccd01eab031db5b331db1f999d3b (patch) | |
| tree | a770e61fdf8477d6053b09d8b4e5da163aa0ff3d | |
| parent | 28f38da5063d88fd8fc503cb56a8b6bafa1d953d (diff) | |
CURLMOPT_TIMERFUNCTION.3: warn about the recursive risk [ci skip]
Reported-by: Ricardo Gomes
Bug: #3537
Closes #3836
| -rw-r--r-- | docs/libcurl/opts/CURLMOPT_TIMERFUNCTION.3 | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/libcurl/opts/CURLMOPT_TIMERFUNCTION.3 b/docs/libcurl/opts/CURLMOPT_TIMERFUNCTION.3 index d926d811d..344813fe8 100644 --- a/docs/libcurl/opts/CURLMOPT_TIMERFUNCTION.3 +++ b/docs/libcurl/opts/CURLMOPT_TIMERFUNCTION.3 @@ -54,6 +54,11 @@ The \fBuserp\fP pointer is set with \fICURLMOPT_TIMERDATA(3)\fP. The timer callback should return 0 on success, and -1 on error. This callback can be used instead of, or in addition to, \fIcurl_multi_timeout(3)\fP. + +\fBWARNING:\fP even if it feels tempting, avoid calling libcurl directly from +within the callback itself when the \fBtimeout_ms\fP value is zero, since it +risks triggering an unpleasant recursive behavior that immediately calls +another call to the callback with a zero timeout... .SH DEFAULT NULL .SH PROTOCOLS |