Annotation of embedaddon/curl/docs/libcurl/opts/CURLOPT_DNS_LOCAL_IP4.3, revision 1.1.1.1
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23: .TH CURLOPT_DNS_LOCAL_IP4 3 "December 10, 2017" "libcurl 7.70.0" "curl_easy_setopt options"
24:
25: .SH NAME
26: CURLOPT_DNS_LOCAL_IP4 \- IPv4 address to bind DNS resolves to
27: .SH SYNOPSIS
28: #include <curl/curl.h>
29:
30: CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_LOCAL_IP4, char *address);
31: .SH DESCRIPTION
32: Set the local IPv4 \fIaddress\fP that the resolver should bind to. The
33: argument should be of type char * and contain a single numerical IPv4 address
34: as a string. Set this option to NULL to use the default setting (don't bind
35: to a specific IP address).
36:
37: The application does not have to keep the string around after setting this
38: option.
39: .SH DEFAULT
40: NULL
41: .SH PROTOCOLS
42: All
43: .SH EXAMPLE
44: .nf
45: CURL *curl = curl_easy_init();
46: if(curl) {
47: curl_easy_setopt(curl, CURLOPT_URL, "http://example.com/foo.bin");
48: curl_easy_setopt(curl, CURLOPT_DNS_LOCAL_IP4, "192.168.0.14");
49: ret = curl_easy_perform(curl);
50: curl_easy_cleanup(curl);
51: }
52: .fi
53: .SH AVAILABILITY
54: This option requires that libcurl was built with a resolver backend that
55: supports this operation. The c-ares backend is the only such one.
56:
57: Added in 7.33.0
58: .SH RETURN VALUE
59: Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not,
60: CURLE_NOT_BUILT_IN if support was disabled at compile-time, or
61: CURLE_BAD_FUNCTION_ARGUMENT when given a bad address.
62: .SH "SEE ALSO"
63: .BR CURLOPT_DNS_INTERFACE "(3), " CURLOPT_DNS_LOCAL_IP6 "(3), "
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