curl_multi_fdset

curl_multi_fdset(3)		libcurl Manual		  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.

       NOTE that once this call is made, you must not  remove  the  sets  you
       point  to, as libcurl will need to be able to read them. It needs them
       after select() calls, to know  if  certain  sockets  are	 readable  or
       writable.

       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)