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54 lines
1.6 KiB
Groff
54 lines
1.6 KiB
Groff
.\" generated by cd2nroff 0.1 from CURLINFO_LOCAL_IP.md
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.TH CURLINFO_LOCAL_IP 3 "2024-07-29" libcurl
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.SH NAME
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CURLINFO_LOCAL_IP \- get local IP address of last connection
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LOCAL_IP, char **ip);
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.fi
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.SH DESCRIPTION
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Pass a pointer to a char pointer to receive the pointer to a null\-terminated
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string holding the IP address of the local end of most recent connection done
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with this \fBcurl\fP handle. This string may be IPv6 when that is
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enabled. Note that you get a pointer to a memory area that is reused at next
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request so you need to copy the string if you want to keep the information.
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The \fBip\fP pointer is NULL or points to private memory. You MUST NOT free \-
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it gets freed when you call \fIcurl_easy_cleanup(3)\fP on the corresponding
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CURL handle.
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.SH PROTOCOLS
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This functionality affects all supported protocols
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.SH EXAMPLE
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.nf
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int main(void)
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{
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char *ip;
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CURLcode res;
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CURL *curl = curl_easy_init();
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
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/* Perform the transfer */
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res = curl_easy_perform(curl);
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/* Check for errors */
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if((res == CURLE_OK) &&
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!curl_easy_getinfo(curl, CURLINFO_LOCAL_IP, &ip) && ip) {
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printf("Local IP: %s\\n", ip);
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}
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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.fi
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.SH AVAILABILITY
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Added in curl 7.21.0
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.SH RETURN VALUE
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Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
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.SH SEE ALSO
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.BR CURLINFO_LOCAL_PORT (3),
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.BR CURLINFO_PRIMARY_IP (3),
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.BR curl_easy_getinfo (3),
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.BR curl_easy_setopt (3)
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