Manpages - CURLOPT_CLOSESOCKETDATA.3

CURLOPT_CLOSESOCKETDATA - pointer passed to the socket close callback

#include <curl/curl.h>

CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CLOSESOCKETDATA, void *pointer);

Pass a pointer that will be untouched by libcurl and passed as the first argument in the closesocket callback set with CURLOPT_CLOSESOCKETFUNCTION(3).

The default value of this parameter is NULL.

All except file:

  static int closesocket(void *clientp, curl_socket_t item)
  {
    printf("libcurl wants to close %d now\n", (int)item);
    return 0;
  }

  /* 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.

*CURLOPT_CLOSESOCKETFUNCTION*(3), *CURLOPT_OPENSOCKETFUNCTION*(3),