CURLOPT_DNS_USE_GLOBAL_CACHE.3 2.4 KB

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  23. .TH CURLOPT_DNS_USE_GLOBAL_CACHE 3 "17 Jun 2014" "libcurl 7.37.0" "curl_easy_setopt options"
  24. .SH NAME
  25. CURLOPT_DNS_USE_GLOBAL_CACHE \- global DNS cache
  26. .SH SYNOPSIS
  27. .nf
  28. #include <curl/curl.h>
  29. CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DNS_USE_GLOBAL_CACHE,
  30. long enable);
  31. .fi
  32. .SH DESCRIPTION
  33. Has no function since 7.62.0. Do not use!
  34. Pass a long. If the \fIenable\fP value is 1, it tells curl to use a global DNS
  35. cache that will survive between easy handle creations and deletions. This is
  36. not thread-safe and this will use a global variable.
  37. \fBWARNING:\fP this option is considered obsolete. Stop using it. Switch over
  38. to using the share interface instead! See \fICURLOPT_SHARE(3)\fP and
  39. \fIcurl_share_init(3)\fP.
  40. .SH DEFAULT
  41. 0
  42. .SH PROTOCOLS
  43. All
  44. .SH EXAMPLE
  45. .nf
  46. CURL *curl = curl_easy_init();
  47. if(curl) {
  48. CURLcode ret;
  49. curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
  50. /* switch off the use of a global, thread unsafe, cache */
  51. curl_easy_setopt(curl, CURLOPT_DNS_USE_GLOBAL_CACHE, 0L);
  52. ret = curl_easy_perform(curl);
  53. curl_easy_cleanup(curl);
  54. }
  55. .fi
  56. .SH AVAILABILITY
  57. Deprecated since 7.62.0. Has no function.
  58. .SH RETURN VALUE
  59. Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
  60. .SH "SEE ALSO"
  61. .BR CURLOPT_SHARE "(3), " CURLOPT_DNS_CACHE_TIMEOUT "(3), "