bionic (3) CURLINFO_LOCAL_IP.3.gz

NAME

       CURLINFO_LOCAL_IP - get local IP address of last connection

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LOCAL_IP, char **ip);

DESCRIPTION

       Pass  a  pointer  to  a  char  pointer  to receive the pointer to a zero-terminated string holding the IP
       address of the local end of most recent connection done with this curl handle. This string  may  be  IPv6
       when  that  is enabled. Note that you get a pointer to a memory area that will be re-used at next request
       so you need to copy the string if you want to keep the information.

       The ip pointer will be NULL or pointing to private memory you MUST NOT free - it gets freed when you call
       curl_easy_cleanup(3) on the corresponding CURL handle.

PROTOCOLS

       All

EXAMPLE

       {
         char *ip;

         curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");

         /* Perform the request, res will get the return code */
         res = curl_easy_perform(curl);
         /* Check for errors */
         if((res == CURLE_OK) &&
            !curl_easy_getinfo(curl, CURLINFO_LOCAL_IP, &ip) && ip) {
           printf("Local IP: %s\n", ip);
         }

         /* always cleanup */
         curl_easy_cleanup(curl);
       }

AVAILABILITY

       Added in 7.21.0

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       curl_easy_getinfo(3), curl_easy_setopt(3), CURLINFO_PRIMARY_IP(3),