On Wed, 25 May 2016, Praveen Pvs wrote:

> When we are not able to connect to server and timed out while trying to
> connect to server we get CURLE_COULDNT_CONNECT

Correct. This basically means that the connect() function fails. No TCP
connection could be established.

> When we are able to connect to host but got timed out while waiting for the
> response we get CURLE_OPERATION_TIMEDOUT

This return code is returned basically when _any_ timeout limit is reached
and libcurl returns prematurely because of that.

-- 
  / daniel.haxx.se
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