CURLINFO_LOCAL_IP(3) Library Functions Manual CURLINFO_LOCAL_IP(3)
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)
libcurl 2025-02-05 CURLINFO_LOCAL_IP(3)
curl 8.12.0 - Generated Fri Feb 7 12:51:19 CST 2025