CURLMOPT_SOCKETDATA(3) curl_multi_setopt options CURLMOPT_SOCKETDATA(3)
NAME
CURLMOPT_SOCKETDATA - custom pointer passed to the socket callback
SYNOPSIS
#include <curl/curl.h>
CURLMcode curl_multi_setopt(CURLM *handle, CURLMOPT_SOCKETDATA, void *pointer);
DESCRIPTION
A data pointer to pass to the socket callback set with the CURL-
MOPT_SOCKETFUNCTION(3) option.
This pointer will not be touched by libcurl but will only be passed in
to the socket callbacks's userp argument.
DEFAULT
NULL
PROTOCOLS
All
EXAMPLE
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);
}
AVAILABILITY
Added in 7.15.4
RETURN VALUE
Returns CURLM_OK.
SEE ALSO
CURLMOPT_SOCKETFUNCTION(3), curl_multi_socket_action(3), CURL-
MOPT_TIMERFUNCTION(3)
libcurl 7.81.0 November 04, 2020 CURLMOPT_SOCKETDATA(3)
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