Man Linux: Main Page and Category List


       curl_global_init - Global libcurl initialisation


       #include <curl/curl.h>

       CURLcode curl_global_init(long flags);


       This  function  sets  up  the  program  environment that libcurl needs.
       Think of it as an extension of the library loader.

       This function must be called at least once within a program (a  program
       is  all  the  code that shares a memory space) before the program calls
       any other function in libcurl.  The environment it sets up is  constant
       for  the  life  of  the  program  and is the same for every program, so
       multiple calls have the same effect as one call.

       The flags option is a bit  pattern  that  tells  libcurl  exactly  what
       features to init, as described below. Set the desired bits by ORing the
       values   together.    In   normal   operation,   you    must    specify
       CURL_GLOBAL_ALL.   Don’t  use  any  other value unless you are familiar
       with it and mean to control internal operations of libcurl.

       This function is not thread safe. You must not call it when  any  other
       thread  in  the  program  (i.e.  a  thread  sharing the same memory) is
       running.  This doesn’t just mean no other thread that is using libcurl.
       Because  curl_global_init() calls functions of other libraries that are
       similarly thread unsafe, it could conflict with any other  thread  that
       uses these other libraries.

       See  the  description  in libcurl(3) of global environment requirements
       for details of how to use this function.


            Initialize everything possible. This sets all known bits.

            Initialize SSL

            Initialize the Win32 socket libraries.

            Initialise nothing extra. This sets no bit.


       If this function returns non-zero, something went wrong and you  cannot
       use the other curl functions.


       curl_global_init_mem(3),    curl_global_cleanup(3),   curl_easy_init(3)