| CURLMOPT_SOCKETDATA(3) | curl_multi_setopt options | CURLMOPT_SOCKETDATA(3) |
CURLMOPT_SOCKETDATA - custom pointer passed to the socket callback
#include <curl/curl.h> CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_SOCKETDATA, void *pointer);
A data pointer to pass to the socket callback set with the CURLMOPT_SOCKETFUNCTION(3) option.
This pointer will not be touched by libcurl but will only be passed in to the socket callbacks's clientp argument.
NULL
All
static int sock_cb(CURL *e, curl_socket_t s, int what, void *cbp, void *sockp)
{
GlobalInfo *g = (GlobalInfo*) cbp;
SockInfo *fdp = (SockInfo*) sockp;
if(what == CURL_POLL_REMOVE) {
remsock(fdp);
}
else {
if(!fdp) {
addsock(s, e, what, g);
}
else {
setsock(fdp, s, e, what, g);
}
}
return 0;
}
main()
{
GlobalInfo setup;
/* ... use socket callback and custom pointer */
curl_multi_setopt(multi, CURLMOPT_SOCKETFUNCTION, sock_cb);
curl_multi_setopt(multi, CURLMOPT_SOCKETDATA, &setup);
}
Added in 7.15.4
Returns CURLM_OK.
CURLMOPT_SOCKETFUNCTION(3), curl_multi_socket_action(3), CURLMOPT_TIMERFUNCTION(3)
| February 7, 2023 | libcurl 7.88.1 |