CURLOPT_CLOSESOCKETFUNCTION - callback to socket close replacement function
int closesocket_callback(void *clientp, curl_socket_t item);
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CLOSESOCKETFUNCTION,
Pass a pointer to your callback function, which should match the prototype shown
This callback function gets called by libcurl instead of the close(3)
call when sockets are closed (not for any other file
descriptors). This is pretty much the reverse to the
option. Return 0 to signal success and 1
if there was an error.
pointer is set with CURLOPT_CLOSESOCKETDATA(3)
is the socket libcurl wants to be closed.
By default libcurl uses the standard socket close function.
static int closesocket(void *clientp, curl_socket_t item)
printf("libcurl wants to close %d now0, (int)item);
/* call this function to close sockets */
curl_easy_setopt(curl, CURLOPT_CLOSESOCKETFUNCTION, closesocket);
curl_easy_setopt(curl, CURLOPT_CLOSESOCKETDATA, &sockfd);
Added in 7.21.7
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.