Thanks for the reply, Dan, There are two issues with CURLOPT_OPENSOCKETFUNCTION:
(1) If it happens that an existing connection is reused, then CURLOPT_OPENSOCKETFUNCTION would not be called, would it? (2) We try to be low-level socket agnostic, so we are reluctant to call low-level socket functions directly.
Bin On Feb 22, 2011 10:38am, Dan Fandrich <[email protected]> wrote:
On Tue, Feb 22, 2011 at 10:00:45AM -0800, Bin Wang wrote:
> We use libcurl with CURLOPT_FOLLOWLOCATION option turned on. We have a need to
> obtain the IP addresses of all the servers libcurl tries to connect along the
> whole redirection process.
>
> Since libcurl currently does not provide this, I am thinking about extending
Methinks you haven't read the documentation closely enough...
> libcurl. I can think of two approaches of doing this:
>
> (1) Add a new user provided callback function. Every time when libcurl tries to
> connect to a server, the callback function is called with the server IP
> address.
The CURLOPT_OPENSOCKETFUNCTION does exactly this.
>>> Dan
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