.\" generated by cd2nroff 0.1 from CURLINFO_PRIMARY_IP.md
.TH CURLINFO_PRIMARY_IP 3 "2026-06-24" libcurl
.SH NAME
CURLINFO_PRIMARY_IP \- IP address of last connection
.SH SYNOPSIS
.nf
#include <curl/curl.h>

CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRIMARY_IP, char **ip);
.fi
.SH DESCRIPTION
Pass a pointer to a char pointer to receive the pointer to a null\-terminated
string holding the IP address of the most recent connection done with this
\fBcurl\fP 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 \fBip\fP pointer is NULL or points to private memory. You \fBmust not\fP free
it. The memory gets freed automatically when you call \fIcurl_easy_cleanup(3)\fP on
the corresponding curl handle.
.SH PROTOCOLS
This functionality affects all supported protocols
.SH EXAMPLE
.nf
int main(void)
{
  char *ip;
  CURLcode result;
  CURL *curl = curl_easy_init();

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

  /* Perform the transfer */
  result = curl_easy_perform(curl);
  /* Check for errors */
  if((result == CURLE_OK) &&
     !curl_easy_getinfo(curl, CURLINFO_PRIMARY_IP, &ip) && ip) {
    printf("IP: %s\\n", ip);
  }

  /* always cleanup */
  curl_easy_cleanup(curl);
}
.fi
.SH AVAILABILITY
Added in curl 7.19.0
.SH RETURN VALUE
\fIcurl_easy_getinfo(3)\fP returns a CURLcode indicating success or error.

CURLE_OK (0) means everything was OK, non\-zero means an error occurred, see
\fIlibcurl\-errors(3)\fP.
.SH SEE ALSO
.BR CURLINFO_LOCAL_IP (3),
.BR CURLINFO_LOCAL_PORT (3),
.BR CURLINFO_PRIMARY_PORT (3),
.BR curl_easy_getinfo (3),
.BR curl_easy_setopt (3)