Man Pages

curl_multi_assign(3) - phpMan curl_multi_assign(3) - phpMan

Command: man perldoc info search(apropos)  


curl_multi_assign(3)            libcurl Manual            curl_multi_assign(3)



NAME
       curl_multi_assign - set data to association with an internal socket

SYNOPSIS
       #include <curl/curl.h>

       CURLMcode curl_multi_assign(CURLM *multi_handle, curl_socket_t sockfd,
                                   void *sockptr);

DESCRIPTION
       This  function assigns an association in the multi handle between the given socket and a private pointer of the
       application. This is (only) useful for curl_multi_socket(3) uses.

       When set, the sockptr pointer will be passed to all future socket callbacks for the specific sockfd socket.

       If the given sockfd isn't already in use by libcurl, this function will return an error.

       libcurl only keeps one single pointer associated with a socket, so calling this function several times for  the
       same socket will make the last set pointer get used.

       The idea here being that this association (socket to private pointer) is something that just about every appli-
       cation that uses this API will need and then libcurl can just as well do it since it already  has  an  internal
       hash table lookup for this.

RETURN VALUE
       The standard CURLMcode for multi interface error codes.

TYPICAL USAGE
       In  a  typical application you allocate a struct or at least use some kind of semi-dynamic data for each socket
       that we must wait for action on when using the curl_multi_socket(3) approach.

       When our socket-callback gets called by libcurl and we get to know about yet another socket to wait for, we can
       use  curl_multi_assign(3)  to  point out the particular data so that when we get updates about this same socket
       again, we don't have to find the struct associated with this socket by ourselves.

AVAILABILITY
       This function was added in libcurl 7.15.5, although not deemed stable yet.

SEE ALSO
       curl_multi_setopt(3), curl_multi_socket(3)



libcurl 7.16.0                    9 Jul 2006              curl_multi_assign(3)