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CURLMOPT_SOCKETFUNCTION

Section: curl_multi_setopt options (3)
Updated: 3 Nov 2014
Index Return to Main Contents
 

NAME

CURLMOPT_SOCKETFUNCTION - callback informed about what to wait for  

SYNOPSIS

#include <curl/curl.h>

int socket_callback(CURL *easy,      /* easy handle */
                    curl_socket_t s, /* socket */
                    int what,        /* see above */
                    void *userp,     /* private callback pointer */
                    void *socketp);  /* private socket pointer */

CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_SOCKETFUNCTION, socket_callback);
 

DESCRIPTION

Pass a pointer to your callback function, which should match the prototype shown above.

When the curl_multi_socket_action(3) function runs, it informs the application about updates in the socket (file descriptor) status by doing none, one, or multiple calls to the socket_callback. The callback gets status updates with changes since the previous time the callback was called. If the given callback pointer is NULL, no callback will be called. Set the callback's userp argument with CURLMOPT_SOCKETDATA(3). See curl_multi_socket_action(3) for more details on how the callback is used and should work.  

DEFAULT

NULL (no callback)  

PROTOCOLS

All  

EXAMPLE

TODO  

AVAILABILITY

Added in 7.15.4  

RETURN VALUE

Returns CURLM_OK.  

SEE ALSO

CURLMOPT_SOCKETDATA(3), curl_multi_socket_action(3), CURLMOPT_TIMERFUNCTION(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
DEFAULT
PROTOCOLS
EXAMPLE
AVAILABILITY
RETURN VALUE
SEE ALSO


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