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CURLINFO_PRIMARY_IP(3) Library Functions Manual CURLINFO_PRIMARY_IP(3) NAME CURLINFO_PRIMARY_IP - get IP address of last connection SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PRIMARY_IP, char **ip); DESCRIPTION Pass a pointer to a char pointer to receive the pointer to a null-ter- minated string holding the IP address of the most recent connection done with this curl handle. This string may be IPv6 when that is en- abled. 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 in- formation. 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 all supported protocols 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_PRIMARY_IP, &ip) && ip) { printf("IP: %s\n", ip); } /* always cleanup */ curl_easy_cleanup(curl); } AVAILABILITY Added in curl 7.19.0 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_IP(3), CURLINFO_LOCAL_PORT(3), CURLINFO_PRIMARY_PORT(3), curl_easy_getinfo(3), curl_easy_setopt(3) libcurl 2025-06-03 CURLINFO_PRIMARY_IP(3)
NAME | SYNOPSIS | DESCRIPTION | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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