curl_multi_fdset(3)

NAME

       curl_multi_fdset  -  extracts  file descriptor information from a multi
       handle

SYNOPSIS

       #include <curl/curl.h>

       CURLMcode curl_multi_fdset(CURLM *multi_handle,
                                  fd_set *read_fd_set,
                                  fd_set *write_fd_set,
                                  fd_set *exc_fd_set,
                                  int *max_fd);

DESCRIPTION

       This  function  extracts  file  descriptor  information  from  a  given
       multi_handle.  libcurl returns its fd_set sets. The application can use
       these to select() on.  The  curl_multi_perform(3)  function  should  be
       called  as soon as one of them are ready to be read from or written to.

       You should also be aware that when doing select(), you should  consider
       using  a rather small (single-digit number of seconds) timeout and call
       curl_multi_perform regularly - even if no activity has been seen on the
       fd_sets  -  as  otherwise libcurl-internal retries and timeouts may not
       work as you'd think.

RETURN VALUE

       CURLMcode  type,  general  libcurl  multi  interface  error  code.  See
       libcurl-errors(3)

SEE ALSO

       curl_multi_cleanup(3),curl_multi_init(3)

libcurl 7.9.5                     15 Apr 2004              curl_multi_fdset(3)