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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-ter- minated 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 2025-06-03 CURLINFO_LOCAL_IP(3)
NAME | SYNOPSIS | DESCRIPTION | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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