blob: dfbc2291686b0ebf002c46f5b0d44f3015d6bb42 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
---
c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
SPDX-License-Identifier: curl
Title: CURLOPT_DNS_USE_GLOBAL_CACHE
Section: 3
Source: libcurl
See-also:
- CURLOPT_DNS_CACHE_TIMEOUT (3)
- CURLOPT_SHARE (3)
---
# NAME
CURLOPT_DNS_USE_GLOBAL_CACHE - global DNS cache
# SYNOPSIS
~~~c
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_USE_GLOBAL_CACHE,
long enable);
~~~
# DESCRIPTION
Has no function since 7.62.0. Do not use!
Pass a long. If the *enable* value is 1, it tells curl to use a global DNS
cache that survives between easy handle creations and deletions. This is not
thread-safe and this uses a global variable.
See CURLOPT_SHARE(3) and curl_share_init(3) for the correct way to
share DNS cache between transfers.
# DEFAULT
0
# PROTOCOLS
All
# EXAMPLE
~~~c
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
CURLcode ret;
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
/* switch off the use of a global, thread unsafe, cache */
curl_easy_setopt(curl, CURLOPT_DNS_USE_GLOBAL_CACHE, 0L);
ret = curl_easy_perform(curl);
curl_easy_cleanup(curl);
}
}
~~~
# AVAILABILITY
Deprecated since 7.11.1. Function removed in 7.62.0.
# RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
|
