On Wed, 14 Dec 2016, Fan Zhang wrote:

> In my case, I have a customized TLS library which basically provides a
> read/write interface. Can you shed some more light on how libcurl interact
> with TLS interface?

You then create a new TLS backend (or modify an existing). See curl/lib/vtls/
for the existing backends and especially their header files for how they
define the "curlssl_*" functions.

The generic libcurl code only calls the SSL functions and the API that are
offered in the vtls/vtls.c file.

-- 
  / daniel.haxx.se
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