plucky (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 null-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 is reused at next request so you
       need to copy the string if you want to keep the information.

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

PROTOCOLS

       This functionality affects quic and tcp

EXAMPLE

       int main(void)
       {
         char *ip;
         CURLcode res;
         CURL *curl = curl_easy_init();

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

         /* Perform the transfer */
         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 curl 7.21.0

RETURN VALUE

       curl_easy_getinfo(3) returns a CURLcode indicating success or error.

       CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3).

SEE ALSO

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