On Mon, 5 Sep 2011, Yamin Zhou wrote:

>> If you're using a recent libcurl I'm not aware of any such flaws or
>> limitations.
> I'm using 7.20.0.

A bit old by now but it is probably fine.

>> I trust you're doing curl_global_init() before all threads start and if
>> you're using HTTPS you use the SSL library's mutex callbacks.

> But besides curl worker threads, there are some other threads using SSL, and
> in those threads curl_easy_escape, only this curl API, is called. Problem in
> there?

Let me repeat: use the SSL library's mutex callbacks. It seems to me that
you're not using them:

    http://curl.haxx.se/docs/faq.html#Is_libcurl_thread_safe

Inspiration to the actual implementations can be found in this example:

    http://curl.haxx.se/libcurl/c/threaded-ssl.html

-- 
  / daniel.haxx.se
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